Nitric oxide is involved in the regulation of guard mother cell division by inhibiting the synthesis of ACC
文献类型： 外文期刊
作者： Zhou, Lijuan 1 ; Yu, Shuangshuang 1 ; Liu, Yue 1 ; Wang, Yanyan 3 ; Wen, Yuanyuan 1 ; Zhang, Zijing 1 ; Ru, Yanyu 1 ; He, Zhaorong 1 ; Chen, Xiaolan 1 ;
作者机构： 1.Yunnan Univ, Sch Life Sci, Kunming, Yunnan, Peoples R China
2.Kunming Univ, Coll Agr & Life Sci, Kunming, Yunnan, Peoples R China
3.Yunnan Acad Agr Sci, Int Agr Res Inst, Kunming, Yunnan, Peoples R China
关键词： ACS gene; GMC division; HB1; SGC; stoma
期刊名称：PLANT CELL AND ENVIRONMENT （ 影响因子：7.3； 五年影响因子：8.1 ）
ISSN： 0140-7791
年卷期： 2023 年
页码：
收录情况： SCI
摘要： A stoma forms by a series of asymmetric divisions of stomatal lineage precursor cell and the terminal division of a guard mother cell (GMC). GMC division is restricted to once through genetic regulation mechanisms. Here, we show that nitric oxide (NO) is involved in the regulation of the GMC division. NO donor treatment results in the formation of single guard cells (SGCs). SGCs are also produced in plants that accumulate high NO, whereas clustered guard cells (GCs) appear in plants with low NO accumulation. NO treatment promotes the formation of SGCs in the stomatal signalling mutants sdd1, epf1 epf2, tmm1, erl1 erl2 and er erl1 erl2, reduces the cell number per stomatal cluster in the fama-1 and flp1 myb88, but has no effect on stomatal of cdkb1;1 cyca2;234. Aminocyclopropane-1-carboxylic acid (ACC), a positive regulator of GMC division, reduces the NO-induced SGC formation. Further investigation found NO inhibits ACC synthesis by repressing the expression of several ACC SYNTHASE (ACS) genes, and in turn ACC represses NO accumulation by promoting the expression of HEMOGLOBIN 1 (HB1) encoding a NO scavenger. This work shows NO plays a role in the regulation of GMC division by modulating ACC accumulation in the Arabidopsis cotyledon.
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