Effects of arbuscular mycorrhizal fungi on root architecture and ultrastructure of Hordeum jubatum under the interactive impact of nitrogen deposition and cold stress

IF 3.6 3区 生物学 Q1 PLANT SCIENCES
Plant Biology Pub Date : 2025-05-26 DOI:10.1111/plb.70048
J. Han, F. Wang, D. Dmitrii, J. Tian, P. Han, Z. Tan, J. Zhang, J. Lin, J. Wang
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Abstract

Abstract Image

氮沉降和冷胁迫交互作用下丛枝菌根真菌对大枣根构型和超微结构的影响
大黄是一种多年生草本植物,具有较高的观赏价值和较强的抗逆性。氮沉降和冷胁迫是影响东北寒区生态系统稳定性的关键环境因子。这些因素显著影响植物的生长发育。丛枝菌根真菌(AMF)是一种能提高植物抗病性和生长的共生土壤真菌。然而,氮沉降和冷胁迫对H. jubatum-AM共生体根系影响的研究还很有限。在氮沉降和冷胁迫条件下,研究了在AMF存在和不存在的情况下,jubatum根系生物量(干重和鲜重)、结构(长度、表面积、体积、分叉、四阶根数和根分形维数)和超微结构。冷胁迫抑制了根构型的所有指标,破坏了根的超微结构,且在冷胁迫下N2 (NH4 +/NO3 - = 1:1)处理的抑制作用更大,说明氮沉降增加了枣对冷胁迫的敏感性。与不接种处理相比,接种AMF显著降低了氮沉降和冷胁迫对枣根的伤害。本研究结果揭示了氮沉降和冷胁迫交互作用与单一胁迫(氮沉降或冷胁迫)对植物根系发育的不同影响,为利用菌根技术提高寒冷地区耐寒植物在胁迫条件下的抗逆性和生产力提供了科学依据。
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来源期刊
Plant Biology
Plant Biology 生物-植物科学
CiteScore
8.20
自引率
2.60%
发文量
109
审稿时长
3 months
期刊介绍: Plant Biology is an international journal of broad scope bringing together the different subdisciplines, such as physiology, molecular biology, cell biology, development, genetics, systematics, ecology, evolution, ecophysiology, plant-microbe interactions, and mycology. Plant Biology publishes original problem-oriented full-length research papers, short research papers, and review articles. Discussion of hot topics and provocative opinion articles are published under the heading Acute Views. From a multidisciplinary perspective, Plant Biology will provide a platform for publication, information and debate, encompassing all areas which fall within the scope of plant science.
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