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首次接触更大重力：苔藓植物通过由AP2/ERF转录因子介导的增强光合作用进行适应。

First contact with greater gravity: Moss plants adapted via enhanced photosynthesis mediated by AP2/ERF transcription factors.

作者信息

Hanba Yuko T, Do Thi Huong, Takemura Kaori, Kitajima Sakihito, Vyacheslavova Alisa, Takata Miyu, Beier Marcel Pascal, Yokoi Maki, Shinozawa Akihisa, Maeda Ayuko, Yasui Yutaro, Sakaguchi Naoya, Kameishi Ryuji, Watanabe Rina, Okugawa Souma, Ozaki Ryota, Hirai Seika, Kamachi Hiroyuki, Kume Atsushi, Karahara Ichirou, Sakata Yoichi, Onoda Yusuke, Fujita Tomomichi

机构信息

Faculty of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.

Graduate School of Life Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo 060-0810, Japan.

出版信息

Sci Adv. 2025 Jul 18;11(29):eado8664. doi: 10.1126/sciadv.ado8664. Epub 2025 Jul 16.

DOI:10.1126/sciadv.ado8664
PMID:40668901
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12266102/
Abstract

The emergence of land plants required adaptations to altered water availability and increased effective gravity. Bryophytes underwent major changes in physiology, anatomy, and growth during their emergence onto land. However, the link between gravity, photosynthesis, and genetic control remains unclear. Here, we show that leaf carbon dioxide diffusion enhanced photosynthesis in the model moss under increased gravity (6 and 10 times Earth's gravity), driven by increases in plant (gametophore) number and chloroplast size. RNA sequencing analysis showed that 10 gravity up-regulated several species-specific APETALA2/ethylene-responsive factor (AP2/ERF) transcription factors. Overexpression of one such , (; gene ID = ), in phenocopied plants grown at 10 gravity, and the dominant repressor form of IBSH1 suppressed 10 gravity responses. These results provide evidence that the proliferation of AP2/ERF transcription factors and the establishment of a notable gene network may have been important in adaptation to the terrestrial environment during land plant evolution.

摘要

陆地植物的出现需要适应变化的水分可利用性和增加的有效重力。苔藓植物在登陆过程中经历了生理、解剖和生长方面的重大变化。然而，重力、光合作用和基因控制之间的联系仍不清楚。在这里，我们表明，在重力增加（6倍和10倍地球重力）的情况下，模型苔藓中叶片二氧化碳扩散增强了光合作用，这是由植物（配子体）数量和叶绿体大小的增加驱动的。RNA测序分析表明，10倍重力上调了几个物种特异性的APETALA2/乙烯反应因子（AP2/ERF）转录因子。在10倍重力下生长的拟南芥中过表达其中一个这样的基因（IBSH1；基因ID = ）， phenocopied植物，而IBSH1的显性抑制形式抑制了10倍重力反应。这些结果提供了证据，表明AP2/ERF转录因子的增殖和一个显著基因网络的建立在陆地植物进化过程中适应陆地环境可能很重要。 （注：原文中“phenocopied plants”和“; gene ID = ”以及“in phenocopied plants”处表述似乎不完整或有误，翻译时保留了原文表述。）

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/12266102/50a57d6512cf/sciadv.ado8664-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/12266102/fefff8591a9c/sciadv.ado8664-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/12266102/bf1f259b968a/sciadv.ado8664-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/12266102/9b9bcc909114/sciadv.ado8664-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/12266102/0bcb242a3644/sciadv.ado8664-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/12266102/50a57d6512cf/sciadv.ado8664-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/12266102/fefff8591a9c/sciadv.ado8664-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/12266102/bf1f259b968a/sciadv.ado8664-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/12266102/9b9bcc909114/sciadv.ado8664-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/12266102/0bcb242a3644/sciadv.ado8664-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f19a/12266102/50a57d6512cf/sciadv.ado8664-f5.jpg

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本文引用的文献

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