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在Arabidopsis分泌体形态发生过程中,ROS抑制了微管子动力学和细胞生长异质性

Isabella Burda^1,2,3, Fridtjof Brauns⁴, Aaron Shipman^2,3

¹Genetics, Genomics, and Development Graduate Program, Cornell University, Ithaca, NY 14850, USA.

bioRxiv : the preprint server for biology

|June 4, 2025

概括

活性氧物种 (ROS) 在植物发育过程中对细胞生长产生影响. 升高的ROS稳定了微管,减少了细胞生长波动,并影响了Arabidopsis体的器官形状.

科学领域:

植物生物学植物生物学
细胞形态发生是细胞形态发生.
发育生物学是发展生物学.

背景情况:

器官发育需要精确控制细胞生长,但单个细胞生长可能是可变的.
在Arabidopsis中,均的分生长确保了花的保护,而像ftsh4-5这样的突变导致由于细胞生长平均值受损而导致变化的分大小.

研究的目的:

为了研究反应性氧物种 (ROS) 在调节细胞生长异质性和微管动力学中的作用,在Arabidopsis分泌体发育过程中.
了解ROS如何影响细胞生长波动的平均值,以获得强大的器官形态发生.

主要方法:

在野生类型和ftsh4-5突变的Arabidopsis体中分析细胞生长异质性.
皮层微管组织和动态的显微观测.
评估活性氧物种 (ROS) 含量及其对分离体发育的影响.
微管稳定性的实验操纵.

主要成果:

发现高ROS水平抑制了细胞生长异质性和平均化.
增加的ROS诱导了更"交叉"和稳定的皮质微管结构.
细胞生长平均值受损与具有稳定,交叉微管的细胞有关.
脱聚合微管不能完全恢复正常的生长波动.

结论:

反应性氧物种 (ROS) 在调节器官发育过程中的细胞生长波动和微管动力学方面发挥着关键作用.
微管稳定性的ROS诱导的变化有助于抑制细胞生长的平均化,影响分泌体形态发生.
ROS影响了植物器官生长强壮所必需的过程.

关键词:

阿拉比多普西斯塔利亚纳.形态发生形态发生形态发生在ROS中,有反应性氧物种.皮层微管是皮层的微管.坟墓的坟墓是一个坟墓.

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