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Exploring the Metabolic Pathways of Melon (Cucumis melo L.) Yellow Leaf Mutants via Metabolomics

文献类型： 外文期刊

作者： Zhang, Fan 1 ; Chen, Kexin 1 ; Dai, Dongyang 1 ; Liu, Bing 2 ; Wu, Yaokun 2 ; Sheng, Yunyan 1 ;

作者机构： 1.Heilongjiang Bayi Agr Univ, Coll Hort & Landscape Architecture, Daqing 163000, Peoples R China

2.Heilongjiang Acad Agr Sci, Daqing Branch, Daqing 163000, Peoples R China

关键词： melon yellow leaf mutant ZT00091; carotenoid; chlorophyll; metabolomics; qRT-PCR

期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）

ISSN： 2223-7747

年卷期： 2025 年 14 卷 15 期

页码：

收录情况： SCI

摘要： A yellow leaf mutant named 'ZT00091' was discovered during the cultivation of the melon variety 'ZT091'. An analysis of the leaf ultrastructure revealed that the chloroplasts of 'ZT00091' were significantly smaller than those of 'ZT091', with irregular shapes, blurred contours, and no starch granules. Metabolomic analysis revealed 792 differentially abundant metabolites between 'ZT00091' and 'ZT091', with 273 upregulated and 519 downregulated. The Kyoto Encyclopedia of Genes and Genomes (KEGG) results indicated that the differentially abundant metabolites were enriched mainly in the carotenoid pathway. qRT-PCR was used to analyze key genes in the carotenoid pathway of melon. Compared with those in 'ZT091', the genes promoting carotenoids and lutein in 'ZT00091' were significantly upregulated, which may explain the yellow color of 'ZT00091' leaves. Significant differences in the chlorophyll contents (chlorophyll a, chlorophyll b, and total chlorophyll) and carotenoid contents were found between 'ZT00091' and 'ZT091', indicating that the yellowing of melon leaves is related to changes in the carotenoid and chlorophyll contents. This study provides a theoretical basis for research on the molecular mechanism of melon yellowing.

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