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
作者： Bin Zheng 1 ; Zhao, Qiaoli 2 ; Wu, Hongxia 1 ; Ma, Xiaowei 1 ; Xu, Wentian 1 ; Li, Li 1 ; Liang, Qingzhi 1 ; Wang, Songbiao 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, South Subtrop Crops Res Inst, Hainan Key Lab Trop Hort Postharvest Treatment &, Key Lab Trop Fruit Biol,Minist Agr & Rural Affair, Zhanjiang 524091, Peoples R China
2.Jiangnan Univ, State Key Lab Food Sci & Technol, Wuxi 214122, Jiangsu, Peoples R China
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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