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Overexpression of particular MADS-box transcription factors in heat-stressed plants induces chloroplast biogenesis in petals

文献类型： 外文期刊

作者： Wang, Zhen 1 ; Shen, Yuxiao 1 ; Yang, Xiao 1 ; Pan, Qi 1 ; Ma, Guangying 1 ; Bao, Manzhu 1 ; Zheng, Bo 1 ; Duanmu, Deqian 1 ;

作者机构： 1.Huazhong Agr Univ, Key Lab Hort Plant Biol, Minist Educ, Wuhan, Hubei, Peoples R China

2.Zhejiang Acad Agr Sci, Flower Res & Dev Ctr, Hangzhou, Zhejiang, Peoples R China

3.Huazhong Agr Univ, State Key Lab Agr Microbiol, Wuhan, Hubei, Peoples R China

4.Chinese Acad Sci, Key Lab Photobiol, Inst Bot, Beijing, Peoples R China

关键词： Arabidopsis; chloroplasts biogenesis; heat stress; MADS-box transcription factors; petals; SOC1 or SOC1-like genes; tobacco

期刊名称：PLANT CELL AND ENVIRONMENT （ 影响因子：7.228； 五年影响因子：7.791 ）

ISSN： 0140-7791

年卷期： 2019 年 42 卷 5 期

页码：

收录情况： SCI

摘要： Chloroplasts convert solar energy into biologically useful forms of energy by performing photosynthesis. Although light and particular genes are known to promote chloroplast development, little is known about the mechanisms that regulate the tissue-specificity and cell-specificity of chloroplast biogenesis. Thus, the mechanisms that determine whether non-photosynthetic plastids rather than chloroplasts develop in petals remain largely unexplored. Although heat stress is known to inhibit photosynthesis, we do not know whether heat stress affects chloroplast biogenesis. Here, we report that heat stress up-regulates the expression of chlorophyll biosynthesis-related genes and promotes chloroplasts biogenesis in petals overexpressing SOC1 (suppressor of overexpression of CO) and novel SOC1-like genes. We also found that these specific MADS-box transcription factors are present in most photosynthetic eukaryotes and that the expression of more than one homolog is observed in chloroplast-containing tissues. These findings not only provide novel insights into the tissue specificity of chloroplast biogenesis and a method for producing green petals but also are consistent with heat stress influencing chloroplast biogenesis in higher plants.

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