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植物区分不同的光周期来独立控制季节性开花和生长
作者:小柯机器人 发布时间:2024/2/10 21:58:26

美国耶鲁大学Joshua M. Gendron研究小组发现,植物区分不同的光周期来独立控制季节性开花和生长。2024年2月9日出版的《科学》杂志发表了这项成果。

通过使用光周期生长缺陷突变体,研究人员发现了一种季节性生长调节途径,它在长日照下与典型的长日照光周期开花机制并行发挥作用。这是通过使用不同的机制来检测不同的光周期来实现的:开花途径以光照强度的持续时间来衡量光周期,而生长途径则以光合活动的持续时间(光合作用期)来衡量光周期。

这样,植物就能独立控制开花或生长所需基因的表达。这表明,季节性开花和生长是可以分离的,它们可以在不同季节独立协调。

据介绍,植物通过测量昼长(光周期)来调节季节性生长和开花。对光周期开花的研究已经很多,但对光周期生长的研究却较少。

附:英文原文

Title: Plants distinguish different photoperiods to independently control seasonal flowering and growth

Author: Qingqing Wang, Wei Liu, Chun Chung Leung, Daniel A. Tarté, Joshua M. Gendron

Issue&Volume: 2024-02-09

Abstract: Plants measure daylength (photoperiod) to regulate seasonal growth and flowering. Photoperiodic flowering has been well studied, but less is known about photoperiodic growth. By using a mutant with defects in photoperiodic growth, we identified a seasonal growth regulation pathway that functions in long days in parallel to the canonical long-day photoperiod flowering mechanism. This is achieved by using distinct mechanisms to detect different photoperiods: The flowering pathway measures photoperiod as the duration of light intensity, whereas the growth pathway measures photoperiod as the duration of photosynthetic activity (photosynthetic period). Plants can then independently control expression of genes required for flowering or growth. This demonstrates that seasonal flowering and growth are dissociable, allowing them to be coordinated independently across seasons.

DOI: adg9196

Source: https://www.science.org/doi/10.1126/science.adg9196

期刊信息
Science:《科学》,创刊于1880年。隶属于美国科学促进会,最新IF:63.714
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