当前位置: X-MOL 学术Plant Soil › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Fungal Endophyte Improves Survival of Lolium perenne in Low Fertility Soils by Increasing Root Growth, Metabolic Activity and Absorption of Nutrients
Plant and Soil ( IF 4.9 ) Pub Date : 2020-05-23 , DOI: 10.1007/s11104-020-04556-7
Zhenjiang Chen , Yuanyuan Jin , Xiang Yao , Taixiang Chen , Xuekai Wei , Chunjie Li , James F. White , Zhibiao Nan

Low nutrient soil is a major limiting factor for normal growth and high yield of plants. Epichloë endophyte infection has been shown to increase host growth, nutrient uptake and balance. This study was done to determine the impact of Epichloë endophyte on growth, survival and elemental nutrient content of perennial ryegrass (Lolium perenne) under low fertility conditions. endophyte-infected and endophyte-free plants of L. perenne were grown without fertilization in a greenhouse environment. Plant survival rate, dry weight of leaves and roots, root metabolic activity and nutrient element (C, N, P, Na, K, Ca, Mg, Cu, Fe, Zn, Mn) contents were determined after 0 d, 45 d, 90 d, 135 d and 180 d. The presence of Epichloë endophyte relieved the withering and yellowing of plants in the short term (0 to 90 d). The possible mechanisms by which E. festucae var. lolii infection enhances survival of plants includes improved root growth and metabolic activity (i.e., cellular metabolism), increased biomass production, and increased concentration of many nutrient elements in leaves and roots. The endophyte had positive direct and indirect effects on plants in multiple ways, including: increased organic carbon, total nitrogen, total phosphorus and Mn content in leaves, increased K content in leaves and roots, and improved root growth and activity. The presence of endophyte E. festucae var. lolii played a key role in improving the survival of L. perenne plants by increasing root growth and metabolic activity, promoting plant biomass and altering nutrient content.

中文翻译:

真菌内生菌通过增加根生长、代谢活性和营养吸收来提高低肥力土壤中黑麦草的存活率

低营养土壤是植物正常生长和高产的主要限制因素。Epichloë 内生菌感染已被证明可以促进宿主生长、营养吸收和平衡。本研究旨在确定 Epichloë 内生菌在低肥力条件下对多年生黑麦草 (Lolium perenne) 生长、存活和元素营养含量的影响。内生菌感染和无内生菌的多年生黑麦草植物在温室环境中无需施肥即可生长。0 d、45 d后测定植株成活率、叶根干重、根系代谢活性和营养元素(C、N、P、Na、K、Ca、Mg、Cu、Fe、Zn、Mn)含量, 90 天、135 天和 180 天。Epichloë 内生菌的存在在短期内(0 至 90 天)缓解了植物的枯萎和变黄。E. 可能的机制 羊茅变种 lolii 感染提高了植物的存活率,包括改善根系生长和代谢活动(即细胞代谢)、增加生物量产量以及增加叶和根中许多营养元素的浓度。内生菌以多种方式对植物产生直接和间接的积极影响,包括:增加叶片中的有机碳、全氮、全磷和锰含量,增加叶片和根中的钾含量,改善根系生长和活性。内生菌 E. festucae var. 的存在。lolii 通过增加根生长和代谢活动、促进植物生物量和改变营养成分,在提高多年生植物的存活率方面发挥了关键作用。增加生物量产量,增加叶和根中许多营养元素的浓度。内生菌以多种方式对植物产生直接和间接的积极影响,包括:增加叶片中的有机碳、全氮、全磷和锰含量,增加叶片和根中的钾含量,改善根的生长和活性。内生菌 E. festucae var. 的存在。lolii 通过增加根生长和代谢活动、促进植物生物量和改变营养成分,在提高多年生植物的存活率方面发挥了关键作用。增加生物量产量,增加叶和根中许多营养元素的浓度。内生菌以多种方式对植物产生直接和间接的积极影响,包括:增加叶片中的有机碳、全氮、全磷和锰含量,增加叶片和根中的钾含量,改善根系生长和活性。内生菌 E. festucae var. 的存在。lolii 通过增加根生长和代谢活动、促进植物生物量和改变营养成分,在提高多年生植物的存活率方面发挥了关键作用。增加叶和根中的钾含量,改善根的生长和活性。内生菌 E. festucae var. 的存在。lolii 通过增加根生长和代谢活动、促进植物生物量和改变营养成分,在提高多年生植物的存活率方面发挥了关键作用。增加叶和根中的钾含量,改善根的生长和活性。内生菌 E. festucae var. 的存在。lolii 通过增加根生长和代谢活动、促进植物生物量和改变营养成分,在提高多年生植物的存活率方面发挥了关键作用。
更新日期:2020-05-23
down
wechat
bug