Ectomycorrhizal fungi integrate nitrogen mobilisation and mineral weathering in boreal forest soil

IF 8.3 1区 生物学 Q1 PLANT SCIENCES
New Phytologist Pub Date : 2023-09-11 DOI:10.1111/nph.19260
Shahid Mahmood, Zaenab Fahad, Emile B. Bolou-Bi, Katharine King, Stephan J. Köhler, Kevin Bishop, Alf Ekblad, Roger D. Finlay
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引用次数: 0

Abstract

Abstract Image

外生菌根真菌将北方森林土壤中的氮动员和矿物风化结合在一起
北方森林的树木生长是由外生菌根真菌在有机和矿物层离散的土壤中动员有机氮和矿质养分驱动的。然而,目前还没有关于外生菌根矿物风化和有机氮动员过程如何在整个土壤剖面中整合的研究。利用13个CO2脉冲标记、天然稳定同位素(26 Mg和15 N)模式以及真菌扩增子的高通量DNA测序,通过改变天然有机土壤和矿质土壤的比例,研究了有机质有效性对外生菌根功能的影响。有机质减少导致氮素限制植物生长,减少矿物层光合碳分配和菌丝生长。26 Mg的分异模式表明,镁的动员和吸收主要发生在较深的矿物层,并由碳分配到外生菌根菌丝体驱动。在这个范围内,外生菌根真菌的相对丰度、碳分配和碱阳离子动员都随着有机质有效性的增加而增加。通过外生菌根真菌的碳分配整合了有机氮的动员和跨土壤层的矿物风化,提高了植物养分获取的效率。我们的研究结果对可持续森林管理和地下碳封存具有重要意义。
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来源期刊
New Phytologist
New Phytologist 生物-植物科学
自引率
5.30%
发文量
728
期刊介绍: New Phytologist is an international electronic journal published 24 times a year. It is owned by the New Phytologist Foundation, a non-profit-making charitable organization dedicated to promoting plant science. The journal publishes excellent, novel, rigorous, and timely research and scholarship in plant science and its applications. The articles cover topics in five sections: Physiology & Development, Environment, Interaction, Evolution, and Transformative Plant Biotechnology. These sections encompass intracellular processes, global environmental change, and encourage cross-disciplinary approaches. The journal recognizes the use of techniques from molecular and cell biology, functional genomics, modeling, and system-based approaches in plant science. Abstracting and Indexing Information for New Phytologist includes Academic Search, AgBiotech News & Information, Agroforestry Abstracts, Biochemistry & Biophysics Citation Index, Botanical Pesticides, CAB Abstracts®, Environment Index, Global Health, and Plant Breeding Abstracts, and others.
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