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The interspecific competition presents greater nutrient facilitation compared to intraspecific competition through AM fungi interacting with litter for two host plants in karst soil
Journal of Plant Ecology ( IF 2.7 ) Pub Date : 2021-09-27 , DOI: 10.1093/jpe/rtab110
Yun Guo 1 , YueJun He 1, 2 , Pan wu 2 , Bangli Wu 1 , Yan Lin 1 , Minhong He 1 , Xu Han 1 , Tingting Xia 1 , Kaiping Shen 1 , Liling Kang 1 , Qiyu Tan 1 , Wenda Ren 1 , Yan Sun 1 , Qing Li 1
Affiliation  

Abstract
Aims
Litter is the crucial carrier of soil nutrition transformation. The influence of arbuscular mycorrhizal (AM) fungi on nutrient acquisition in plants has been widely recognized. However, in nutrient-deficient karst habitat, how competitive plants utilize nutrients regulated by AM fungi via litter remains largely unknown.
Methods
The experimental treatments included the inoculation with or without Glomus etunicatum, the litter addition by the mixed leaves of Broussonetia papyrifera and Carpinus pubescens or no addition, and the competition through the intraspecific competition of B. papyrifera and C. pubescens respectively and the interspecific competition mixed both plants.
Important Findings
AM fungi differently affected plant on nutrient acquisition, increasing nutrients acquisitions of B. papyrifera in intra- and interspecific competitions while decreasing for C. pubescens. Litter presented opposite influences on N acquisitions of both plants in interspecific competition with AM fungi, being positive for C. pubescens and negative for B. papyrifera, respectively. Under the interaction of AM fungi and litter, nitrogen (N), phosphorus (P) and potassium (K) acquisitions by B. papyrifera and N acquisition by C. pubescens in interspecific competition were all greater than intraspecific competition. In the interspecific competition, the competitive ability of plants on nutrient absorption presented significant species difference, which of B. papyrifera on P and K was significantly increased, while was converse for C. pubescens on K. In conclusion, these results suggest that the interspecific competition presents greater nutrient facilitation compared to intraspecific competition through AM fungi interacting with litter for plants in karst soil.


中文翻译:

与通过 AM 真菌与凋落物相互作用的喀斯特土壤中两种寄主植物的种内竞争相比,种间竞争提供了更大的营养促进

摘要
宗旨
凋落物是土壤营养转化的重要载体。丛枝菌根 (AM) 真菌对植物营养获取的影响已得到广泛认可。然而,在营养缺乏的喀斯特栖息地,竞争性植物如何通过凋落物利用由 AM 真菌调节的营养物质仍然很大程度上未知。
方法
实验治疗包括接种具有或不具有球囊etunicatum,垫料加入由混合叶片构树鹅耳枥或不添加,并通过的种内竞争的竞争构树C.毛分别和间竞争混合两种植物。
重要发现
AM 真菌对植物养分获取的影响不同,在种内和种间竞争中增加了B. papyrifera 的养分获取,而减少了C. pubescens。在与 AM 真菌的种间竞争中,凋落物对两种植物的 N 获取具有相反的影响,分别对C. pubescensB. papyrifera呈阳性。在 AM 真菌和凋落物的相互作用下,B. papyrifera 对氮 (N)、磷 (P) 和钾 (K) 的获取和C. pubescens 对N 的获取种间竞争均大于种内竞争。在种间竞争中,植物对养分吸收的竞争能力呈现出显着的种间差异,B. papyrifera对 P 和 K的竞争能力显着增加,而C. pubescens对 K的竞争能力则相反与通过 AM 真菌与喀斯特土壤中植物的凋落物相互作用的种内竞争相比,竞争提供了更大的营养促进作用。
更新日期:2021-09-30
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