Overexpression ofMaTPD1Aimpairs fruit and pollen development by modulating some regulators inMusa itinerans

文献类型： 外文期刊

第一作者： Hu, Chunhua

作者： Hu, Chunhua;Sheng, Ou;Dong, Tao;Yang, Qiaosong;Dou, Tongxin;Li, Chunyu;He, Weidi;Gao, Huijun;Yi, Ganjun;Deng, Guiming;Bi, Fangcheng;Hu, Chunhua;Sheng, Ou;Dong, Tao;Yang, Qiaosong;Dou, Tongxin;Li, Chunyu;He, Weidi;Gao, Huijun;Yi, Ganjun;Deng, Guiming;Bi, Fangcheng;Hu, Chunhua;Sheng, Ou;Dong, Tao;Yang, Qiaosong;Dou, Tongxin;Li, Chunyu;He, Weidi;Gao, Huijun;Yi, Ganjun;Deng, Guiming;Bi, Fangcheng

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关键词： Wild banana fruits develop; TPD1; Male sterile; Musa itinerans; Overexpression

期刊名称：BMC PLANT BIOLOGY （ 影响因子：4.215； 五年影响因子：4.96 ）

ISSN： 1471-2229

年卷期： 2020 年 20 卷 1 期

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收录情况： SCI

摘要： Background Pollen formation and development is important for crop fertility and is a key factor for hybrid development. Previous reports have indicated thatArabidopsis thaliana TAPETUM DETERMINANT1(AtTPD1) and its rice (Oryza sativa) homolog,OsTPD1-like (OsTDL1A), are required for cell specialization and greatly affect pollen formation and development. Little is known about the role of the TPD1 homolog in banana pollen development. Results Here, we report the identification and characterization of TPD1 homologs in diploid banana (Musa itinerans) and examine their role in pollen development by overexpressing the closest homolog,MaTPD1A.MaTPD1Aexhibits high expression in stamen and localizes in the plasma membrane.MaTPD1A-overexpressing plants produce no pollen grains and smaller and seedless fruit compared to wild-type plants. Transcriptome analysis showed that in plant hormone, starch and sucrose metabolism, and linolenic acid metabolism-related pathways were affected by overexpression ofMaTPD1A, and the expression of several key regulators, such asPTC1andMYB80, which are known to affect anther development, is affected inMaTPD1A-overexpressing lines. Conclusions Our results indicate that MaTPD1A plays an important role in pollen formation and fruit development in diploid banana, possibly by affecting the expression of some key regulators of pollen development.

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