Metabolomic and transcriptomic analyses reveal new insights into the role of abscisic acid in modulating mango fruit ripening
文献类型： 外文期刊
作者： Wu, Shibo 1 ; Wu, Di 1 ; Song, Juan 1 ; Zhang, Yanyu 1 ; Tan, Qing 1 ; Yang, Tianquan 3 ; Yang, Jingya 1 ; Wang, Songbiao 5 ; Xu, Jianchu 1 ; Xu, Wei 1 ; Liu, Aizhong 2 ;
作者机构： 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Econ Plants & Biotechnol, 132 Lanhei Rd, Kunming 650201, Yunnan, Peoples R China
2.Southwest Forestry Univ, Minist Educ, Key Lab Forest Resource Conservat & Utilizat Sout, Kunming 650224, Yunnan, Peoples R China
3.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming 650201, Yunnan, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Chinese Acad Trop Agr Sci, South Subtrop Crops Res Inst, Minist Agr, Key Lab Trop Fruit Biol, Zhanjiang 524091, Peoples R China
期刊名称：HORTICULTURE RESEARCH （ 影响因子：7.291； 五年影响因子：7.487 ）
ISSN： 2662-6810
年卷期： 2022 年 9 卷
页码：
收录情况： SCI
摘要： Mango (Mangifera indica L.) is a climacteric tropical fruit consumed around the world. Although ethylene and abscisic acid (ABA) have been considered to be stimulators that trigger mango fruit ripening, their regulation mechanisms in modulating mango fruit ripening remain uncertain. In this study, we performed integrative analyses of metabolome and transcriptome data combined with a series of physiological and experimental analyses in the 'Keitt' mango, and we characterized changes in accumulation of specific metabolites at different stages during fruit development and ripening, which were strongly correlated with transcriptional changes and embodied physiological changes as well as taste formation. Specifically, we found that ABA, rather than ethylene, was highly associated with mango ripening, and exogenous ABA application promoted mango fruit ripening. Transcriptomic analysis identified diverse ripening-related genes involved in sugar and carotenoid biosynthesis and softening-related metabolic processes. Furthermore, networks of ABA- and ripening-related genes (such as MiHY5, MiGBF4, MiABI5, and MibZIP9) were constructed, and the direct regulation by the key ABA-responsive transcription factor MiHY5 of ripening-related genes was experimentally confirmed by a range of evidence. Taken together, our results indicate that ABA plays a key role in directly modulating mango fruit ripening through MiHY5, suggesting the need to reconsider how we understand ABA function in modulating climacteric fruit ripening.
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