丛枝菌根联合调节全球根-种子协调。

IF 13.6 1区 生物学 Q1 PLANT SCIENCES
Qingpei Yang, Binglin Guo, Mingzhen Lu, Yanjie Liu, Paul Kardol, Peter B. Reich, Richard D. Bardgett, Johannes H. C. Cornelissen, Nathan J. B. Kraft, Sandra Díaz, Ian J. Wright, Nianpeng He, J. Aaron Hogan, Yuxin Pei, Qinwen Han, Zhenjiang Li, Zheng Wang, Wanqin Yang, Junxiang Ding, Zhongling Yang, Huifang Wu, Carlos P. Carmona, Oscar J. Valverde-Barrantes, Dezhu Li, Jie Cai, Hui Zeng, Yue Zhang, Weizheng Ren, Yong Zhao, Xitian Yang, Guoqiang Fan, Junjian Wang, Guoyong Li, Deliang Kong
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引用次数: 0

摘要

陆生植物在形态和功能上表现出巨大的物种差异。根系资源获取与种子繁殖的协调可以促进植物种群的适应性。在我们对有史以来最大的根性状和种子质量联合全球数据集进行分析之前,根和种子性状是如何协同变化的仍然不清楚。本研究表明,丛枝菌根(AM)植物的种子质量和种子磷质量与根直径呈正相关,这取决于根皮质厚度的变化,而不是根导管大小的变化。这些发现表明AM在磷吸收和病原体抗性中具有双重作用,而不是最初预期的通过根管运输资源作为主要驱动因素。而在外生菌根植物中,根系性状与种子质量没有关系。总的来说,我们的研究揭示了AM植物根和种子之间的协调,这可能是由根-菌根共生调节的,并且可能在塑造全球植物多样性和物种分布中至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Arbuscular mycorrhizal association regulates global root–seed coordination

Arbuscular mycorrhizal association regulates global root–seed coordination

Arbuscular mycorrhizal association regulates global root–seed coordination
Terrestrial plants exhibit immense variation in their form and function among species. Coordination between resource acquisition by roots and reproduction through seeds could promote the fitness of plant populations. How root and seed traits covary has remained unclear until our analysis of the largest-ever compiled joint global dataset of root traits and seed mass. Here we demonstrate that seed mass and seed phosphorus mass scale positively with root diameter in arbuscular mycorrhizal (AM) plants, depending on variation in root cortical thickness instead of root vessel size. These findings suggest a dual role of AM association in phosphorus uptake and pathogen resistance which drives the global root–seed coordination, instead of initially expected resource transport via root vessels as the main driver. In contrast, we found no relationship between root traits and seed mass in ectomycorrhizal plants. Overall, our study reveals coordination between roots and seeds in AM plants, which is probably regulated by root–mycorrhizal symbiosis, and may be crucial in shaping global plant diversity and species distributions. In this study, Yang et al. compile a global dataset to uncover the degree to which plants coordinate root and seed traits. They report a global positive correlation between root diameter and seed size, driven by dual roles of arbuscular mycorrhiza in phosphorus uptake and pathogen defence.
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来源期刊
Nature Plants
Nature Plants PLANT SCIENCES-
CiteScore
25.30
自引率
2.20%
发文量
196
期刊介绍: Nature Plants is an online-only, monthly journal publishing the best research on plants — from their evolution, development, metabolism and environmental interactions to their societal significance.
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