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在大米中,OsMADS6-OsMADS32和REP1控制着白细胞异质性和形态发生

Xuelian Zhang¹, Qiang Cai², Ling Li¹

¹Joint International Research Laboratory of Metabolic & Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China.

Developmental cell

|April 9, 2024

概括

米的发育需要精确的细胞调节. 转录因子REP1,OsMADS6和OsMADS32控制细胞增殖和分化,确保适当的器官形态发生和细胞异质性.

科学领域:

植物生物学植物生物学
发育生物学是发展生物学.
遗传学遗传学是一种遗传学.

背景情况:

器官形态学依赖于精确控制细胞增殖和分化.
米白,一个分离体,具有不同的区域 (边缘区域和白体) 与异质细胞群,使其成为研究器官发育的模型.

研究的目的:

为了研究转录因子 (TFs) 在调节米形态发生过程中的细胞增殖和分化中的作用.
了解TFs如何控制发育中的器官内的细胞异质性.

主要方法:

研究了转录因子REP1,OsMADS6和OsMADS32在米发育中的功能.
分析了这些TFs对循环素依赖的激酶基因 (OsCDKB1;1和OsCDKB2;1) 的调节.
检查了这些基因在Arabidopsis中的保存,以了解异质细胞生长.

主要成果:

通过调节OsCDKB1;1.1.1,REP1促进了体 (BOP) 中的细胞增殖和分化,从而导致化细胞.
边缘区域 (MRP) 的OsMADS6和OsMADS32限制细胞分裂,并促进内核复制,通过抑制OsCDKB2;1.1.形成延长细胞.
在OsMADS6-OsMADS32复合体和REP1之间的相互抑制平衡细胞分裂和分化.

结论:

特定的转录因子在不同地区的米中协调不同的细胞行为 (增殖与分化和Endoreduplication).
这些TF建立了一个监管网络,对器官形态发生至关重要的细胞异质性进行微调.
已识别的基因和机制在Arabidopsis中功能性保存,突出了控制器官发育中的细胞异质性的基本框架.

关键词:

在 OsCDKB1;11;1 在 OsCDKB2;12;1 这就是OsMADS32的原因.在奥斯马德斯6S6 在 REP1 中, REP1 是 REP1 的代名词.细胞循环中的细胞循环.细胞异质性的细胞异质性形态发生 (morphogenesis) 是一种形态的产生.帕莱亚帕莱亚是什么意思

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