Molecular Characterization of Ethylene-Regulated Anthocyanin Biosynthesis in Plums During Fruit Ripening

文献类型： 外文期刊

第一作者： Cheng, Yudou

作者： Cheng, Yudou;Liu, Liqin;Yuan, Can;Guan, Junfeng;Cheng, Yudou;Liu, Liqin;Yuan, Can;Guan, Junfeng

作者机构：

关键词： Ethylene;Ethylene-responsive factor;Anthocyanin;Plum;Ripening

期刊名称：PLANT MOLECULAR BIOLOGY REPORTER （ 影响因子：1.595； 五年影响因子：2.042 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Anthocyanin accumulation is an important physiological process that occurs during plum fruit ripening. Currently, little is known about the molecular mechanisms of ethylene-regulated anthocyanin accumulation in plum fruit. To better understand this process, ethylene production, anthocyanin content, and the expression of genes involved in anthocyanin biosynthesis and ethylene signaling were studied in the postharvest 'Oishi-wase' plum (Prunus salicina Lindl. cv. 'Oishi-wase') fruit. Ethylene treatment significantly enhanced the anthocyanin accumulation in plum fruit peel, while 1-methylcyclopropene (1-MCP) treatment resulted in considerable reduction in anthocyanin content. Furthermore, ethylene treatment significantly enhanced the expression levels of the seven structural genes, i.e., PsPAL, PsCHS, PsCHI, PsF3H, PsDFR, PsLDOX, and PsUFGT, that were involved in the anthocyanin biosynthetic pathway, while 1-MCP treatment showed an opposite effect. Similar to the structural genes, the master transcription factor PsMYB10 messenger RNA (mRNA) was also induced by ethylene and suppressed by 1-MCP, and this was positively correlated with ethylene production, anthocyanin accumulation, and the expression profile of the structural genes. The expression patterns of the ethylene signal pathway-associated genes, including two ethylene receptors (PsERS1 and PsETR1) and seven ethylene-responsive factors (PsERFs), were also positively correlated with that of PsMYB10 and most of the structural genes involved in the anthocyanin biosynthetic pathway. Further analysis indicated that PsERS1, PsETR1, PsERF1a, PsERF1b, PsERF2a, PsERF3a, and PsERF3b might be involved in the anthocyanin biosynthetic pathway of plum fruit. These results suggest that the ethylene signaling pathway plays an important role in regulating anthocyanin biosynthesis of postharvest plum fruit.

分类号： Q94`Q7

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