中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Assessment of organic acid accumulation and its related genes in peach

文献类型:期刊论文

AuthorZheng, Beibei1,2; Zhao, Li1,3; Jiang, Xiaohan1,3; Cherono, Sylvia1,3; Liu, JingJing1,3; Ogutu, Collins1,4; Ntini, Charmaine1,3; Zhang, Xiujun1,2; Han, Yuepeng1,2,4
SourceFOOD CHEMISTRY
Issued Date2021
Volume334Pages:8
KeywordPeach Malate Citrate GABA Fruit Quality
ISSN0308-8146
DOI10.1016/j.foodchem.2020.127567
English AbstractFruit acidity is an important determinant of peach organoleptic quality, but its regulatory mechanism remains elusive. Measurement of organic acids in ripe fruits of seventy-five peach cultivars revealed the predominant components malate and citrate, accompanied by quinate. Organic acid accumulation increased at early stages of fruit growth, but exhibited a more dramatic reduction in low-acid cultivar during later stages of fruit development compared to high-acid cultivars. Low-acid cultivars showed citrate degradation and less transport of malate into the vacuole due to upand down-regulation of a GABA pathway gene GAD and a malate transporter gene ALMT9, respectively. The NAD-MDH1 gene might control the rate-limiting step in malate synthesis, while three genes, PDK, PK, and ADH, could affect citrate synthesis through the pyruvate-to-acetyl-CoA-to-citrate pathway. Altogether, these results suggested that malate accumulation is controlled at the level of metabolism and vacuolar storage, while metabolism is crucial for citrate accumulation in peach.
Funding ProjectNational Key R&D Program of China[2019YFD1000200] ; National Natural Science Foundation of China[31672134] ; China Agriculture Research System[CARS-30]
WOS Research AreaChemistry ; Food Science & Technology ; Nutrition & Dietetics
Language英语
WOS IDWOS:000569687200011
PublisherELSEVIER SCI LTD