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Low phosphorus impact on Moso bamboo (Phyllostachys edulis) root morphological polymorphism and expression pattern of the related genes. Tree Physiol. (IF 4.0) Pub Date : 2023-11-30 Tingting Hang,Chenjun Lin,Muhammad Asim,Muthusamy Ramakrishnan,Shixin Deng,Ping Yang,Mingbing Zhou
Moso bamboo typically grows in phosphorus (P)-deficient soil that limits the growth and development. In this study, ten Moso bamboo genotypes (Ph-1 to Ph-10) were evaluated for their responses to P deficiency during the seedling stage by growing them in both P-sufficient and P-deficient conditions. Adaptive responses to low P conditions were observed in the majority of genotypes. Under P deficiency
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Tree hugging is a shady business. Tree Physiol. (IF 4.0) Pub Date : 2023-11-13 Ronald Pierik,Chrysoula K Pantazopoulou
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Identification of microRNAs involved in ectomycorrhizal formation in Populus tomentosa. Tree Physiol. (IF 4.0) Pub Date : 2023-11-13 Yuanxun Tao,Chaofeng Li,Ying Liu,Changzheng Xu,Shin Okabe,Norihisa Matsushita,Chunlan Lian
The majority of woody plants are able to form ectomycorrhizal (ECM) symbioses with fungi. During symbiotic development, plants undergo a complex re-programming process involving a series of physiological and morphological changes. MicroRNAs (miRNAs) are important components of the regulatory network underlying symbiotic development. To elucidate the mechanisms of miRNAs and miRNA-mediated mRNA cleavage
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Novel insights into the role of leaf in the cutting process of Camellia sinensis using physiological, biochemical and transcriptome analyses. Tree Physiol. (IF 4.0) Pub Date : 2023-11-13 Hong Zhang,Binrui Chen,Xiaoyi Zhao,Jing Hu,Zhijie Dong,Hui Xiao,Yanwen Yuan,Fei Guo,Yu Wang,Dejiang Ni,Pu Wang
Cuttage is the preferred approach for rapid propagation of many species including tea plant (Camellia sinensis). Leaf serves as a key part of nodal cutting, but there is a lack of systematic research on its role in the cutting process. In this study, 24 tea cultivars were employed to prove the necessity of leaf and light during cuttage. Further leaf physiological parameters found that lower net photosynthesis
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Populus euphratica plant cadmium tolerance PePCR3 improves cadmium tolerance. Tree Physiol. (IF 4.0) Pub Date : 2023-11-13 Kun Qiao,Qinghua Shan,Haizhen Zhang,Fuling Lv,Aimin Zhou
Contamination of soils with toxic heavy metals is a major environmental problem. Growing crop plants that can promote the efflux of heavy metals is an effective strategy in contaminated soils. The plant cadmium resistance (PCR) protein is involved in the translocation of heavy metals, specifically zinc and cadmium (Cd). In this study, yeast expressing Populus euphratica PCR3 (PePCR3) showed enhanced
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Parasitic plant-host interaction between the holoparasite Cytinus hypocistis and the shrub Cistus albidus in their natural Mediterranean habitat: local and systemic hormonal effects. Tree Physiol. (IF 4.0) Pub Date : 2023-11-13 Andrea Casadesús,Sergi Munné-Bosch
Mediterranean-type ecosystems provide a unique opportunity to study parasitic plant-host interactions, such as the relationship between the dominant shrub Cistus albidus L. and the root holoparasitic plant Cytinus hypocistis L. We examined this interaction (i) locally, by measuring the hormonal profiling of the interaction zone between the holoparasitic plant and the host, and (ii) systemically, by
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Mismatch between primary and secondary growth and its consequences on wood formation in Qinghai spruce. Tree Physiol. (IF 4.0) Pub Date : 2023-11-13 Biyun Yu,Sergio Rossi,Hongxin Su,Ping Zhao,Shaokang Zhang,Baoqing Hu,Xuebin Li,Lin Chen,Hanxue Liang,Jian-Guo Huang
The connections between the primary and secondary growth of trees allows better understanding of the dynamics of carbon sequestration in forest ecosystems. The relationship between primary and secondary growth of trees could change due to the diverging responses of meristems to climate warming. In this study, the bud phenology and radial growth dynamics of Qinghai spruce (Picea crassifolia) in arid
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Effects of drought and nutrient deficiencies on the allocation of recently fixed carbon in a plant-soil-microbe system. Tree Physiol. (IF 4.0) Pub Date : 2023-11-13 Huijuan Xia,Tiantian Zhang,Xinshuai Li,Tiehu He,Xia Wang,Jiehao Zhang,Kerong Zhang
Carbon (C) allocation plays an important role in plant adaptation to water and nutrient stresses. However, the effects of drought and nutrient deficiencies on the allocation of recently fixed C in the plant-soil-microbe system remain largely unknown. Herein, we studied the response of C allocation of Sophora moorcroftiana (an indigenous pioneer shrub in Tibet) to drought, nitrogen (N) deficiency and
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PaLectinL7 enhances salt tolerance of sweet cherry by regulating lignin deposition in connection with PaCAD1. Tree Physiol. (IF 4.0) Pub Date : 2023-11-13 Fanlin Wu,Dehui Qu,Xu Zhang,Yao Sun,Jingtao Wang,Dongzi Zhu,Lina Yang,Xiao Liu,Wei Tian,Lei Wang,Qingzhong Liu,Hongyan Su
Lectin receptor-like kinases (LecRLKs), a large family of plant receptor-like kinases, play an important role in plant response to abiotic stresses. However, little information is available about the roles of LecRLKs in the salt stress response of sweet cherry (Prunus avium). Here, an L-type LecRLK gene (PaLectinL7) was characterized from sweet cherry. Subcellular localization analysis revealed that
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Genome-wide identification of late embryogenesis abundant protein family and their key regulatory network in Pinus tabuliformis cold acclimation. Tree Physiol. (IF 4.0) Pub Date : 2023-11-13 Chengcheng Zhou,Shihui Niu,Yousry A El-Kassaby,Wei Li
Cold acclimation is a crucial biological process that enables conifers to overwinter safely. The late embryogenesis abundant (LEA) protein family plays a pivotal role in enhancing freezing tolerance during this process. Despite its importance, the identification, molecular functions and regulatory networks of the LEA protein family have not been extensively studied in conifers or gymnosperms. Pinus
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β-Cyclocitric acid enhances drought tolerance in peach (Prunus persica) seedlings. Tree Physiol. (IF 4.0) Pub Date : 2023-11-13 Kaijie Zhu,Yimei Feng,Yufeng Huang,Dongmei Zhang,Muhammad Ateeq,Xiongjie Zheng,Salim Al-Babili,Guohuai Li,Junwei Liu
The β-cyclocitric acid (β-CCA) is a bioactive apocarotenoid previously shown to improve drought tolerance in annual plants. However, the underlying molecular mechanism of this process remains largely elusive. Moreover, the question about the activity of β-CCA in perennial fruit crops is still open. Here, we found that treatment of β-CCA enhances drought tolerance in peach seedlings. The application
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Carbon dynamics during long-term starving poplar trees-the importance of older carbohydrates and a shift to lipids during survival. Tree Physiol. (IF 4.0) Pub Date : 2023-11-06 Juliane Helm,Jan Muhr,Boaz Hilman,Ansgar Kahmen,Ernst-Detlef Schulze,Susan Trumbore,David Herrera-Ramírez,Henrik Hartmann
Carbon (C) assimilation can be severely impaired during periods of environmental stress like drought or defoliation, making trees heavily dependent on the use of C reserve pools for survival; yet, dynamics of reserve use during periods of reduced C supply are still poorly understood. We used stem girdling in mature poplar trees (Populus tremula L. hybrids), a lipid-storing species, to permanently interrupt
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Ability of seedlings to survive heat and drought portends future demographic challenges for five southwestern US conifers. Tree Physiol. (IF 4.0) Pub Date : 2023-11-03 Joseph L Crockett,Matthew D Hurteau
Climate change and disturbance are altering forests and the rates and locations of tree regeneration. In semi-arid forests of the southwestern United States, limitations imposed by hot and dry conditions are likely to influence seedling survival. We examined how the survival of one-year seedlings of five southwestern United States conifer species whose southwestern distributions range from warmer and
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Contrasting water use strategies revealed by species-specific transpiration dynamics in the Caatinga dry forest. Tree Physiol. (IF 4.0) Pub Date : 2023-11-03 Cynthia L Wright,Jason B West,André L A de Lima,Eduardo S Souza,Maria Medeiros,Bradford P Wilcox
In forest ecosystems, transpiration patterns are important for quantifying water and carbon fluxes and are major factors in predicting ecosystem change. Seasonal changes in rainfall and soil water content can alter the sensitivity of sap flux density to daily variations in vapor pressure deficit. This sensitivity is species-specific and is thought to be related to hydraulic strategies. The aim of this
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Transcriptome and Photosynthetic Analyses Provide New Insight into the Molecular Mechanisms Underlying Heat Stress Tolerance in Rhodo-dendron × pulchrum Sweet. Tree Physiol. (IF 4.0) Pub Date : 2023-10-31 Hefeng Cheng,Ziyun Wan,Yanxia Xu,Jianshuang Shen,Xueqin Li,Songheng Jin
Rhododendron species provide excellent ornamental use worldwide, yet heat stress (HS) is one of the major threats to their cultivation. However, the intricate mechanisms underlying the photochemical and transcriptional regulations associated with the heat stress response (HSR) in Rhododendron remain relatively unexplored. In this study, the analyses of morphological characteristics and chlorophyll
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Bark wounding triggers gradual embolism spreading in two diffuse-porous tree species. Tree Physiol. (IF 4.0) Pub Date : 2023-10-31 Radek Jupa,Kamila Pokorná
Xylem transport is essential to the growth, development, and survival of vascular plants. Bark wounding may increase the risk of xylem transport failure by tension-driven embolism. However, the consequences of bark wounding for xylem transport are poorly understood. Here, we examined the impacts of the bark wounding on embolism formation, leaf water potential, and gas exchange in terminal branches
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Respiration in light of evergreen and deciduous woody species and its links to the leaf economic spectrum. Tree Physiol. (IF 4.0) Pub Date : 2023-10-17 Xueqin Li,Xiaoping Chen,Jinlong Li,Panpan Wu,Dandan Hu,Quanlin Zhong,Dongliang Cheng
Leaf respiration in the light (Rlight) is crucial for understanding the net CO2 exchange of individual plants and entire ecosystems. However, Rlight is poorly quantified and rarely discussed in the context of the leaf economic spectrum (LES), especially among woody species differing in plant functional types (PFTs) (e.g., evergreen vs. deciduous species). To address this gap in our knowledge, Rlight
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Effects of AMF inoculation on the growth, photosynthesis, and root physiological morphology of root-pruned Robinia pseudoacacia seedlings. Tree Physiol. (IF 4.0) Pub Date : 2023-10-17 Jinhua Sun,Zheng Rong,Liu Yang,Qimeng Zhu,Yabo Yuan,Zhipei Feng,Limei Li,Nixuan Li,Lei Zhang,Shaoxin Guo
Root pruning hinders the absorption and utilization of nutrients and water by seedlings in the short term. Arbuscular mycorrhizal fungi (AMF) are an important source of nutrient and water for seedlings except for the root system. However, the mechanism by which AMF affect the physiological growth of seedlings after root pruning has rarely been studied. In this study, a pot experiment was conducted
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Leaf trait coordination and variation of blue oak across topo-environmental scales. Tree Physiol. (IF 4.0) Pub Date : 2023-10-17 Angelica Wu,Leander D L Anderegg,Todd E Dawson,Anna T Trugman
Trees are arguably the most diverse and complex macro-organisms on Earth. The equally diverse functions of trees directly impact fluxes of carbon, water, and energy from the land surface. A number of recent studies have shed light on the substantial within-species variability across plant traits including aspects of leaf morphology and plant allocation of photosynthates to leaf biomass. Yet within-tree
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Dynamic modeling of stem water content during the dormant period in walnut trees. Tree Physiol. (IF 4.0) Pub Date : 2023-10-17 Guillaume Charrier,Thierry Améglio
Water content is a key variable in plant physiology, even during the winter period. To simulate stem water content (WC) during the dormant season, a series of experiments were carried out on walnut trees under controlled conditions. In the field, WC was significantly correlated with soil temperature at 50 cm depth (R2 = 0.526). In the greenhouse, WC remained low as long as soil temperature was kept
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The adaptation of root cell wall pectin to copper toxicity in two citrus species differing in copper tolerance: remodeling and responding. Tree Physiol. (IF 4.0) Pub Date : 2023-10-08 Mei-Lan Lin,Fei Lu,Xin Zhou,Xing Xiong,Ning-Wei Lai,Chen Li-Song,Huang Zeng-Rong
Citrus species are prone to suffer from copper (Cu) toxicity because of improper application of Cu-based agrochemicals. Copper immobilization mediated by pectin methylesterase (PME) in the root cell wall (CW) is effective for Cu detoxification. However, the underlying mechanisms of the structural modification and stress responses of citrus root CW pectin to Cu toxicity have been less discussed. In
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Carbon isotope composition of respired CO2 in woody stems and leafy shoots of three tree species along the growing season: physiological drivers for respiratory fractionation. Tree Physiol. (IF 4.0) Pub Date : 2023-10-08 Roberto L Salomón,Jesús Rodríguez-Calcerrada,Linus De Roo,José Carlos Miranda,Samuel Bodé,Pascal Boeckx,Kathy Steppe
The carbon isotope composition of respired CO2 (δ13CR) and bulk organic matter (δ13CB) of various plant compartments informs about the isotopic fractionation and substrate of respiratory processes, which are crucial to advance the understanding of carbon allocation in plants. Nevertheless, the variation across organs, species and seasons remains poorly understood. Cavity Ring-Down Laser Spectroscopy
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Advancements and challenges in bamboo breeding for sustainable development. Tree Physiol. (IF 4.0) Pub Date : 2023-10-08 Huayu Sun,Jiangfei Wang,Hui Li,Tiankuo Li,Zhimin Gao
Bamboo is a highly renewable biomass resource with outstanding ecological, economic and social benefits. However, its lengthy vegetative growth stage and uncertain flowering period have hindered the application of traditional breeding methods. In recent years, significant progress has been made in bamboo breeding. While technical advances in bamboo breeding have been impressive, it is essential to
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Transcriptomic and physiological comparison of Shatangju (Citrus reticulata) and its late-maturing mutant provides insights into auxin regulation of citrus fruit maturation. Tree Physiol. (IF 4.0) Pub Date : 2023-10-08 Yuanda Lv,Shuang Ren,Bo Wu,Caizhong Jiang,Bo Jiang,Birong Zhou,Guangyan Zhong,Yun Zhong,Huaxue Yan
Previous studies have shown that abscisic acid (ABA) and ethylene are involved in pulp maturation and peel coloration in the nonclimacteric citrus fruits. There are also signs indicating that other plant hormones may play some roles in citrus fruit ripening. In this study, we compared profiles of genome-wide gene expression and changes in hormones and peel pigments between fruits of Shatangju mandarin
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Physiological and phenological adjustments in water and carbon fluxes of Aleppo pine forests under contrasting climates in the Eastern Mediterranean. Tree Physiol. (IF 4.0) Pub Date : 2023-10-03 Nikos Markos,Yakir Preisler,Kalliopi Radoglou,Eyal Rotenberg,Dan Yakir
The ability of plants to adjust to the adverse effects of climate change is important for their survival and their contribution to the global carbon cycle. This is particularly true in the Mediterranean region, which is among the regions most vulnerable to climate change. Here, we carried out a two-year comparative ecophysiological study of ecosystem function in two similar Eastern Mediterranean forests
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Determination of the water use patterns for two xerophyte shrubs by hydrogen isotope offset correction. Tree Physiol. (IF 4.0) Pub Date : 2023-09-28 Zhixue Chen,Guohui Wang,Yanhui Pan,Yuying Shen,Xianlong Yang
The stable hydrogen and oxygen isotope technique is typically used to explore plant water uptake; however, accuracy of the technique has been challenged by hydrogen isotope offsets between plant xylem water and its potential sources water. In this study, the soil hydrogen and oxygen isotope waterline was used to correct the hydrogen isotope offsets for Salix psammophila and Caragana korshinskii, two
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Structural, developmental and functional analysis of leaf salt glands of mangrove recretohalophyte Aegiceras corniculatum. Tree Physiol. (IF 4.0) Pub Date : 2023-09-28 Bing-Jie Chi,Ze-Jun Guo,Ming-Yue Wei,Shi-Wei Song,You-Hui Zhong,Jing-Wen Liu,Yu-Chen Zhang,Jing Li,Chao-Qun Xu,Xue-Yi Zhu,Hai-Lei Zheng
Salt secretion is an important strategy for mangrove plant Aegiceras corniculatum to adapt the coastal intertidal environment. However, the structural, developmental and functional analyses on the leaf salt glands, particularly the salt secretion mechanism are not well documented. In this study, we investigated the structural, developmental and degenerative characteristics, and the salt secretion mechanisms
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Effects of simulated climate change conditions of increased temperature and [CO2] on the early growth and physiology of the tropical tree crop, Theobroma cacao L. Tree Physiol. (IF 4.0) Pub Date : 2023-09-27 Julián Fernando Mateus-Rodríguez,Fiona Lahive,Paul Hadley,Andrew J Daymond
Despite multiple studies of the impact of climate change on temperate tree species, experiments on tropical and economically important tree crops such as cacao (Theobroma cacao L.) are still limited. Here, we investigated the combined effects of increased temperature and [CO2] on the growth, photosynthesis, and development of juvenile plants of two contrasting cacao genotypes: SCA 6 and PA 107. The
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Modelling the response of Norway spruce tree ring carbon and oxygen isotopes to selection harvest on a drained peatland forest. Tree Physiol. (IF 4.0) Pub Date : 2023-09-26 Olli-Pekka Tikkasalo,Kersti Leppä,Samuli Launiainen,Mikko Peltoniemi,Raisa Mäkipää,Katja T Rinne-Garmston,Elina Sahlstedt,Giles H F Young,Aleksandra Bokareva,Annalea Lohila,Mika Korkiakoski,Pauliina Schiestl-Aalto,Aleksi Lehtonen
Continuous cover forestry (CCF) has gained interest as an alternative to even-aged management particularly on drained peatland forests. However, relatively little is known about the physiological response of suppressed trees when larger trees are removed as a part of CCF practices. Consequently, studies concentrating on process-level modelling of the response of trees to selection harvesting are also
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Photosynthetic and biochemical responses of four subtropical tree seedlings to reduced dry season and increased wet season precipitation and variable N deposition. Tree Physiol. (IF 4.0) Pub Date : 2023-09-26 Ting Wu,Yuting Song,David Tissue,Wei Su,Hanyu Luo,Xu Li,Shimin Yang,Xujun Liu,Junhua Yan,Juan Huang,Juxiu Liu
Interspecific variations in phenotypic plasticity of trees affected by climate change may alter ecosystem function of forests. Seedlings of four common tree species (Castanopsis fissa, Michelia macclurei, Dalbergia odorifera and Ormosia pinnata) in subtropical plantations of southern China were grown in the field under rainout shelters and subjected to changing precipitation (48 L water every 4 days
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Exogenous chelating agents influence growth, physiological characteristics, and cell ultrastructure of Robinia pseudoacacia seedlings under lead-cadmium stress. Tree Physiol. (IF 4.0) Pub Date : 2023-09-26 Jian Zhou,Anguo Qi,Ting Wang,Songyan Zhang,Jinxiu Liu,Yabo Lu
Heavy metal pollution of soil, especially by lead (Pb) and cadmium (Cd), is a serious problem worldwide. The application of safe chelating agents, combined with the growing of tolerant trees, constitutes an approach for phytoremediation of heavy-metal-contaminated soil. This study aimed to determine whether the two safe chelators, tetrasodium glutamate diacetate (GLDA) and citric acid (CA), could improve
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Comprehensive analysis of JAZ family members in Ginkgo biloba reveals the regulatory role of the GbCOI1/GbJAZs/GbMYC2 module in ginkgolide biosynthesis. Tree Physiol. (IF 4.0) Pub Date : 2023-09-23 Jin-Fa Du,Zhen Zhao,Wen-Bo Xu,Qiao-Lei Wang,Ping Li,Xu Lu
Ginkgo biloba L., an ancient relict plant known as a 'living fossil', has a high medicinal and nutritional value in its kernels and leaves. Ginkgolides are unique diterpene lactone compounds in G. biloba, with favorable therapeutic effects on cardiovascular and cerebrovascular diseases. Thus, it is essential to study the biosynthesis and regulatory mechanism of ginkgolide, which will contribute to
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Ca2+ - and Zn2+ -dependent nucleases co-participate in nuclear DNA degradation during programmed cell death in secretory cavity development in Citrus fruits. Tree Physiol. (IF 4.0) Pub Date : 2023-09-21 Minjian Liang,Bin Huai,Junjun Lin,Xiangxiu Liang,Hanjun He,Mei Bai,Hong Wu
Ca2+- and Zn2+-dependent nucleases play pivotal roles in plant nuclear DNA degradation in programmed cell death (PCD). However, the mechanisms by which these two nucleases co-participate PCD-associated nuclear DNA degradation remain unclear. Here, the spatiotemporal expression patterns of two nucleases (CrCAN and CrENDO1) were analysed qualitatively and quantitatively during PCD in secretory cavity
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Relationships among root exudation with root morphological and architectural traits vary with growing season. Tree Physiol. (IF 4.0) Pub Date : 2023-09-21 Yuqiu Gao,Huimin Wang,Fengting Yang,Xiaoqin Dai,Shengwang Meng,Mingyuan Hu,Liang Kou,Xiaoli Fu
Plants allocate a substantial amount of carbon belowground for root exudates and for the construction and adjustment of root morphological and architectural traits. What relationships exist between root exudates and other root traits and how this relationship changes with growing season, however, remain unclear. We quantified root exudation rate, root morphological traits including total root length
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Juniperus virginiana sourced from colder climates maintain higher ratios of soluble sugars to starch during cold acclimation. Tree Physiol. (IF 4.0) Pub Date : 2023-09-21 Samuel C Harbol,Randall W Long,Juliana S Medeiros
Non-structural carbohydrates (NSCs) are carbon compounds that serve a large variety of purposes, which makes it hard to disentangle how their concentrations change in response to environmental stress. Soluble sugars can accumulate in plants as metabolic demand decreases, e.g. in response to drought or as seasonal temperatures decrease. Alternatively, actively allocating to NSCs could be beneficial
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Plasticity of wood and leaf traits related to hydraulic efficiency and safety is linked to evaporative demand and not soil moisture in rubber (Hevea brasiliensis). Tree Physiol. (IF 4.0) Pub Date : 2023-09-14 Pierre-André Waite,Christoph Leuschner,Sylvain Delzon,Triadiati Triadiati,Asmadi Saad,Bernhard Schuldt
The predicted increase of drought intensity in Southeast Asia has raised concern about the sustainability of rubber (Hevea brasiliensis) cultivation. In order to quantify the degree of phenotypic plasticity in this important tree crop species, we analysed a set of wood and leaf traits related to hydraulic safety and efficiency in PB260 clones from eight small-holder plantations in Jambi province, Indonesia
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Pushing the thermal limit for cacao-will we have chocolate also in a warmer future? Tree Physiol. (IF 4.0) Pub Date : 2023-09-11 Anna Monrad Jensen
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LcMYB106 suppresses monoterpene biosynthesis by negatively regulating LcTPS32 expression in Litsea cubeba. Tree Physiol. (IF 4.0) Pub Date : 2023-09-08 Yunxiao Zhao,Yicun Chen,Ming Gao,Liwen Wu,Yangdong Wang
Litsea cubeba, the core species of the Lauraceae family, is valuable for the production of essential oils due to its high concentration of monoterpenes (90%). The key monoterpene synthase (mono-TPS) and metabolic regulatory network of monoterpene biosynthesis has provided new insights for improving essential oil content. However, there are few studies on the regulation mechanism of monoterpenes in
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Nutrient conditions mediate mycorrhizal effects on biomass production and cell wall chemistry in poplar. Tree Physiol. (IF 4.0) Pub Date : 2023-09-06 Katie M Becklin,Bethanie M Viele,Heather D Coleman
Large-scale biofuel production from lignocellulosic feedstock is limited by the financial and environmental costs associated with growing and processing lignocellulosic material and the resilience of these plants to environmental stress. Symbiotic associations with arbuscular (AM) and ectomycorrhizal (EM) fungi represent a potential strategy for expanding feedstock production while reducing nutrient
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Effects of drought and rehydration on root gene expression in seedlings of Pinus massoniana Lamb. Tree Physiol. (IF 4.0) Pub Date : 2023-09-06 Xinhua Chen,Hu Chen,Huilan Xu,Mei Li,Qunfeng Luo,Ting Wang,Zhangqi Yang,Siming Gan
The mechanisms underlying plant response to drought involve the expression of numerous functional and regulatory genes. Transcriptome sequencing based on the second- and/or third-generation high-throughput sequencing platforms has proven to be powerful for investigating the transcriptional landscape under drought stress. However, the full-length transcriptomes related to drought responses in the important
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Brief windows with more favorable atmospheric conditions explain patterns of Polylepis reticulata tree water use in a high altitude Andean forest. Tree Physiol. (IF 4.0) Pub Date : 2023-09-06 Aldemar Carabajo-Hidalgo,Santiago Sabaté,Patricio Crespo,Heidi Asbjornsen
Polylepis trees occur throughout the Andean mountain region and is the tree genus that grows at the highest elevation world-wide. In the humid Andes where moisture is rarely limiting, Polylepis trees must adapt to extreme environmental conditions, especially rapid fluctuations in temperature, ultraviolet radiation and vapor pressure deficit (VPD). However, Polylepis' water use patterns remain largely
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Tree-ring δ 15N as an indicator of nitrogen dynamics in stands with N2-fixing Alnus rubra. Tree Physiol. (IF 4.0) Pub Date : 2023-09-06 L Nehring,J M Kranabetter,G J Harper,B J Hawkins
Tree-ring δ15N may depict site-specific, long-term patterns in nitrogen (N) dynamics under N2-fixing species, but field trials with N2-fixing tree species are lacking and the relationship of temporal patterns in tree-ring δ15N to soil N dynamics is controversial. We examined whether tree-ring δ15N of N2-fixing red alder (Alnus rubra) would mirror N accretion rates and δ15N of soils, and whether the
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Hydraulic traits and photosynthesis are coordinated with trunk sapwood capacitance in tropical tree species. Tree Physiol. (IF 4.0) Pub Date : 2023-09-06 Yang Wei,Ya-Jun Chen,Zafar Siddiq,Jiao-Lin Zhang,Shu-Bin Zhang,Steven Jansen,Kun-Fang Cao
Water stored in trunk sapwood is vital for the canopy to maintain its physiological function under high transpiration demands. Little is known regarding the anatomical properties that contribute to the hydraulic capacitance of tree trunks, and whether trunk capacitance is correlated with the hydraulic and gas-exchange traits of canopy branches. We examined sapwood capacitance, xylem anatomical characteristics
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Hydraulic segmentation explains differences in loss of branch conductance caused by fire. Tree Physiol. (IF 4.0) Pub Date : 2023-09-06 Adam G West,Shonese T Bloy,Robert P Skelton,Jeremy J Midgley
The hydraulic death hypothesis suggests fires kill trees by damaging the plant's hydraulic continuum in addition to stem cambium. A corollary to this hypothesis is that plants that survive fires possess 'pyrohydraulic' traits that prevent heat-induced embolism formation in the xylem and aid post-fire survival. We examine whether hydraulic segmentation within stem xylem may act as such a trait. To do
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Divergent role of nutrient availability in determining drought responses of sessile oak and Scots pine seedlings: evidence from 13C and 15N dual labeling. Tree Physiol. (IF 4.0) Pub Date : 2023-09-06 Sheng-Nan Ou-Yang,Lie-Hua Tie,Matthias Saurer,Arun K Bose,Hong-Lang Duan,Mai-He Li,Xing-Liang Xu,Wei-Jun Shen,Arthur Gessler
Increased soil nutrient availability can promote tree growth while drought impairs metabolic functioning and induces tree mortality. However, limited information is available about the role of nutrients for drought responses of trees. A greenhouse experiment was conducted with sessile oak (Quercus petraea) and Scots pine (Pinus sylvestris) seedlings, which were subjected to three fertilization treatments
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Do epiphytic lichens negatively impact their hosts through allelopathy? The effect of Evernia esorediosa on growth and biochemical processes of Larix gmelinii. Tree Physiol. (IF 4.0) Pub Date : 2023-09-05 Sleptsov Igor Vitalievich,Rozhina Sakhaiana Mikhailovna,Prokopiev Ilya Andreevich,Mikhailov Vladislav Vasilievich,Alekseev Kirill Vasilievich
The question of the nature of the interaction between epiphytic lichens and their host trees remains highly debatable. Some authors showed cases of allelopathy, but this needs further investigation. Our study covers the effects caused by the epiphytic lichen Evernia esorediosa on growth and biochemical processes in Larix gmelinii trees in cryolithozone boreal forests. Usnic acid (UA) is shown to migrate
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Dynamical systems for plant carbon storage: describing complex reserve dynamics from simple fluctuations in photosynthesis and carbon allocation. Tree Physiol. (IF 4.0) Pub Date : 2023-08-29 R Alex Thompson,Simon M Landhäusser,Henry D Adams
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Tropical forest lianas have greater non-structural carbohydrate concentrations in the stem xylem than trees. Tree Physiol. (IF 4.0) Pub Date : 2023-08-16 Caroline Signori-Müller,David Galbraith,Julia Valentim Tavares,Simone Matias Reis,Francisco Carvalho Diniz,Martin Gilpin,Beatriz Schwantes Marimon,Geertje M F van der Heijden,Camila Borges,Bruno Barçante Ladvocat Cintra,Sarah Mião,Paulo S Morandi,Alex Nina,Carlos A Salas Yupayccana,Manuel J Marca Zevallos,Eric G Cosio,Ben Hur Marimon Junior,Abel Monteagudo Mendoza,Oliver Phillips,Norma Salinas,Rodolfo
Lianas (woody vines) are important components of tropical forests and are known to compete with host trees for resources, decrease tree growth and increase tree mortality. Given the observed increases in liana abundance in some forests and their impacts on forest function, an integrated understanding of carbon dynamics of lianas and liana-infested host trees is critical for improved prediction of tropical
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Enhanced belowground sink activity in Populus: 'Spray and pray' meets high throughput transcriptomics and metabolomics. Tree Physiol. (IF 4.0) Pub Date : 2023-07-20 Rachel Spicer
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The optical method based on gas injection overestimates leaf vulnerability to xylem embolism in three woody species. Tree Physiol. (IF 4.0) Pub Date : 2023-10-08 Francesco Petruzzellis,Azzurra Di Bonaventura,Enrico Tordoni,Martina Tomasella,Sara Natale,Patrizia Trifilò,Giuliana Tromba,Francesca Di Lillo,Lorenzo D'Amico,Giovanni Bacaro,Andrea Nardini
Plant hydraulic traits related to leaf drought tolerance, like the water potential at turgor loss point (TLP) and the water potential inducing 50% loss of hydraulic conductance (P50), are extremely useful to predict the potential impacts of drought on plants. While novel techniques have allowed the inclusion of TLP in studies targeting a large group of species, fast and reliable protocols to measure
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Automatization of metabolite extraction for high-throughput metabolomics: case study on transgenic isoprene-emitting birch. Tree Physiol. (IF 4.0) Pub Date : 2023-10-08 Marko Bertić,Ina Zimmer,David Andrés-Montaner,Maaria Rosenkranz,Jaakko Kangasjärvi,Jörg-Peter Schnitzler,Andrea Ghirardo
Metabolomics studies are becoming increasingly common for understanding how plant metabolism responds to changes in environmental conditions, genetic manipulations and treatments. Despite the recent advances in metabolomics workflow, the sample preparation process still limits the high-throughput analysis in large-scale studies. Here, we present a highly flexible robotic system that integrates liquid
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Heritable epigenetic modification of BpPIN1 is associated with leaf shapes in Betula pendula. Tree Physiol. (IF 4.0) Pub Date : 2023-10-08 Chenrui Gu,Rui Han,Chaoyi Liu,Gonggui Fang,Qihang Yuan,Zhimin Zheng,Qibin Yu,Jing Jiang,Sanzhen Liu,Linan Xie,Hairong Wei,Qingzhu Zhang,Guifeng Liu
The new variety Betula pendula 'Dalecarlica', selected from Betula pendula, shows high ornamental value owing to its lobed leaf shape. In this study, to identify the genetic components of leaf shape formation, we performed bulked segregant analysis and molecular marker-based fine mapping to identify the causal gene responsible for lobed leaves in B. pendula 'Dalecarlica'. The most significant variations
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Elevated nutrient supply can exert worse effects on Norway spruce than drought, viewed through chemical defence against needle rust. Tree Physiol. (IF 4.0) Pub Date : 2023-10-08 Andrea Ganthaler,Andreas Guggenberger,Wolfgang Stöggl,Ilse Kranner,Stefan Mayr
Abiotic factors such as water and nutrient availability can exert a dominant influence on the susceptibility of plants to various pathogens. Effects of abiotic environmental factors on phenolic compound concentrations in the plant tissue may represent one of the major underlying mechanisms, as these compounds are known to play a substantial role in plant resistance to pests. In particular, this applies
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Moisture stress limits radial mixing of non-structural carbohydrates in sapwood of trembling aspen. Tree Physiol. (IF 4.0) Pub Date : 2023-06-30 Drew M P Peltier,Phiyen Nguyen,Chris Ebert,George Koch,Ted Schuur,Kiona Ogle
Dynamics in non-structural carbohydrate (NSC) pools may underlie observed drought legacies in tree growth. We assessed how aridity influences the dynamics of different-aged NSC pools in tree sapwood at two sites with differing climate conditions ('wet' vs. 'dry') that also experienced widespread regional drought five years earlier. We used an incubation method to measure radiocarbon (Δ14C) in CO2 respired
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Overexpression of PsAMT1.2 in poplar enhances nitrogen utilization and resistance to drought stress. Tree Physiol. (IF 4.0) Pub Date : 2023-10-08 Chunxia Zhang,Yang Li,Tianli Yang,Mengting Shi
Ammonium is an important form of inorganic nitrogen, which is essential for plant growth and development, and the uptake of ammonium is mediated by different members of ammonium transporters (AMTs). It is reported that PsAMT1.2 is specially expressed in the root of poplar, and the overexpression of PsAMT1.2 could improve plant growth and the salt tolerance of poplar. However, the role of AMTs in plant
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Artificial warming affects sugar signals and flavonoid accumulation to improve female willows' growth faster than males. Tree Physiol. (IF 4.0) Pub Date : 2023-09-06 Mingyue Fu,Jun Liao,Xuejiao Liu,Menghan Li,Sheng Zhang
Increasing global warming is severely affecting tree growth and development. However, research on the sex-specific responses of dioecious trees to warming is scarce. Here, male and female Salix paraplesia were selected for artificial warming (an increase of 4 °C relative to ambient temperature) to investigate the effects on morphological, physiological, biochemical and molecular responses. The results
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Functional response and resistance to drought in seedlings of six shrub species with contrasting leaf traits from the Mediterranean Basin and California. Tree Physiol. (IF 4.0) Pub Date : 2023-10-08 Antonio Parra,R Brandon Pratt,Anna L Jacobsen,Daniel Chamorro,Iván Torres,José M Moreno
Extreme drought events during post-fire regeneration are becoming increasingly frequent in Mediterranean-type ecosystems. Understanding how plants with different traits and origins respond to such conditions during early life stages is therefore critical for assessing the effect of climate change. Here, seedlings of three Cistus (semi-deciduous malacophylls from the Mediterranean Basin) and three Ceanothus
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Local adaptation to aridity in a widely distributed angiosperm tree species is mediated by seasonal increase of sugars and reduced growth. Tree Physiol. (IF 4.0) Pub Date : 2023-06-27 Frida I Piper,Alex Fajardo
Trees in dry climates often have higher concentrations of total non-structural carbohydrates (NSC = starch + soluble sugars) and grow less than conspecifics in more humid climates. This pattern might result from growth being more constrained by aridity than the carbon (C) gain, or reflect local adaptation to aridity, since NSC fuel metabolism and ensure adequate osmoregulation through the supply of
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Late autumn warming can both delay and advance spring budburst through contrasting effects on bud dormancy depth in Fagus sylvatica L. Tree Physiol. (IF 4.0) Pub Date : 2023-10-08 Romain Garrigues,Inge Dox,Omar Flores,Lorène J Marchand,Andrey V Malyshev,Gerrit Beemster,Hamada AbdElgawad,Ivan Janssens,Han Asard,Matteo Campioli
The current state of knowledge on bud dormancy is limited. However, expanding such knowledge is crucial in order to properly model forest responses and feedback to future climate. Recent studies have shown that warming can decrease chilling accumulation and increase dormancy depth, thereby inducing delayed budburst in European beech (Fagus sylvatica L). Whether fall warming can advance spring phenology