Transcriptome and metabolome profiling provide insights into molecular mechanism of pseudostem elongation in banana

文献类型： 外文期刊

第一作者： Deng, Guiming

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

作者机构：

关键词： Auxin efflux carrier proteins; Banana Pseudostem; Dwarfism; Ethylene response factors; Gibberellins

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： 2021 年 21 卷 1 期

页码：

收录情况： SCI

摘要： BackgroundBanana plant height is an important trait for horticultural practices and semi-dwarf cultivars show better resistance to damages by wind and rain. However, the molecular mechanisms controlling the pseudostem height remain poorly understood. Herein, we studied the molecular changes in the pseudostem of a semi-dwarf banana mutant Aifen No. 1 (Musa spp. Pisang Awak sub-group ABB) as compared to its wild-type dwarf cultivar using a combined transcriptome and metabolome approach.ResultsA total of 127 differentially expressed genes and 48 differentially accumulated metabolites were detected between the mutant and its wild type. Metabolites belonging to amino acid and its derivatives, flavonoids, lignans, coumarins, organic acids, and phenolic acids were up-regulated in the mutant. The transcriptome analysis showed the differential regulation of genes related to the gibberellin pathway, auxin transport, cell elongation, and cell wall modification. Based on the regulation of gibberellin and associated pathway-related genes, we discussed the involvement of gibberellins in pseudostem elongation in the mutant banana. Genes and metabolites associated with cell wall were explored and their involvement in cell extension is discussed.ConclusionsThe results suggest that gibberellins and associated pathways are possibly developing the observed semi-dwarf pseudostem phenotype together with cell elongation and cell wall modification. The findings increase the understanding of the mechanisms underlying banana stem height and provide new clues for further dissection of specific gene functions.

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