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通过PHR1-EIN3/EIL1模块,有限的酸盐资源被有效地分配给每个器官,以协调它们的建立

Fu-Huan Yu^1,2, Cheng-Yue Gu², Yi-Bo Wang³

¹College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, Zhejiang 315100, People's Republic of China.

Science advances

|October 3, 2025

概括

植物为生存战略性地分配酸盐 (Pi). 一个PHR1-EIN3 / EIL1模块优先考虑对光的皮细胞生长,通过限制缺陷下根和皮细胞的发展来保护Pi.

科学领域:

植物生物学植物生物学
分子植物生理学分子植物生理学
营养信号传递营养信号传递

背景情况:

酸盐 (Pi) 对于植物生长至关重要,在土壤中通常是有限的,影响幼苗的早期发育.
阿拉比多普西斯幼苗中缺少Pi的原因是:延长的 hypocotyls,缩小的根,以及白的cotyledons,以增强光线食.

研究的目的:

阐明在幼苗的早期建立过程中管理植物器官之间的战略酸盐分布的监管机制.
了解植物如何优化Pi分配以在营养有限的条件下生存.

主要方法:

研究了Arabidopsis thaliana中PHR1-EIN3/EIL1调控模块的作用.
在不同的酸盐可用性下分析了幼苗的形态和生理反应.

主要成果:

确定了PHR1-EIN3/EIL1模块作为Arabidopsis幼苗中Pi分配的关键调节器.
证明该模块抑制了根的延长和节的扩张,同时在Pi缺乏下促进了绿化.
展示了在Pi-限制条件下光采集的低垂体延长的优先考虑.

结论:

PHR1-EIN3/EIL1模块可以有效地分配Pi,优先考虑轻松食的阴囊延长.
这种机制通过限制其在其他器官中的使用来保护Pi,提高了在营养压力下苗的生存率.
在足够的Pi下,模块促进了整体生长,延迟了绿化.

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