Metabolomics and transcriptomics analyses reveal the potential molecular mechanisms of flavonoids and carotenoids in guava pulp with different colors

文献类型： 外文期刊

第一作者： Bin Zheng

作者： Bin Zheng;Wu, Hongxia;Ma, Xiaowei;Xu, Wentian;Li, Li;Liang, Qingzhi;Wang, Songbiao;Zhao, Qiaoli

作者机构：

关键词： Psidium guajava L.; Pulp color; Flavonoids; Carotenoids; Transcriptome

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：4.342； 五年影响因子：4.342 ）

ISSN： 0304-4238

年卷期： 2022 年 305 卷

页码：

收录情况： SCI

摘要： To understand the forming mechanism of flavonoids and carotenoids in guava pulp with different colors. Based on our previous wide-targeted metabolome analysis, the differences of carotenoids were analyzed by targeted metabolomics, and the molecular mechanism was understood through transcriptomics analysis. The results showed that cyndin-3-O-soproposide and its possible copigments (myricetin, myricitrin, quercetin, quercitrin, etc.) were the main factors that contributed to the color difference between the pink and red guava. The accumulation of these flavonoid components was mainly due to the expression of structural genes C4H, CHS, LDOX, and transcription factors MYB and NAC. ss-cryptoxanthin myristate, ss-cryptoxanthin palmitate, and rubixanthin palmitate were the main carotenoids leading to the yellow pulp of the yellow cultivar. PDS, ZEP, CHYB, and transcription factors NAC were involved in the accumulation of these carotenoid components. This study provides primary data for further utilization and color regulation of guava.

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