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Acta Horticulturae Sinica ›› 2025, Vol. 52 ›› Issue (5): 1301-1316.doi: 10.16420/j.issn.0513-353x.2025-0045

• Genetic & Breeding·Germplasm Resources·Molecular Biology • Previous Articles     Next Articles

Preliminary Transcriptome Analysis of Folate Synthesis and Metabolism in Cabbage

ZHANG Yue1,2, FENG Yiliao1, WANG Bei2, REN Wenjing1, JIANG Chunyu1, ZHAO Xinyu1, WANG Caihong1, YANG Limei1, ZHUANG Mu1, LÜ Honghao1, WANG Yong1, ZHANG Yangyong1,*(), JI Jialei1,3,*()   

  1. 1 State Key Laboratory of Vegetable Biobreeding,Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing 100081,China
    2 College of Horticulture,Shenyang Agricultural University,Shenyang 110161,China
    3 China Vegetable Seed Technology Co., Ltd.(Chongqing),Chongqing 402560,China
  • Received:2025-04-13 Revised:2025-04-27 Online:2025-05-23 Published:2025-05-21
  • Contact: ZHANG Yangyong, JI Jialei

Abstract:

A targeted metabolomic analysis was conducted on the folate composition and content of 127 cabbage inbred lines. The main folate components in cabbage were identified as 5-methyl- tetrahydrofolate(60%-80% of the total)and 5-formyl-tetrahydrofolate(15%-25% of the total). Early-maturing,round-headed high-folate inbred line Q428 and low-folate inbred line Q372 were selected for further study. Comparative transcriptomic analysis of Q428 and Q372 identified 10 305 differentially expressed genes,with 5 178 genes upregulated and 5 127 genes downregulated in Q428. Gene Ontology analysis indicated that the differentially expressed genes were associated with processes such as photosynthesis,light harvesting,protein-chromophore interactions,and chlorophyll binding. KEGG pathway analysis revealed that these genes were primarily involved in carbon metabolism,amino acid biosynthesis,and starch and sucrose metabolism.Through a collinearity analysis with 24 Arabidopsis folate biosynthesis genes,a total of 57 folate-related genes were identified in cabbage,of which 12 key genes showed significant differential expression between Q428 and Q372. Compared to Q372,the expression levels of BoGCHI,genes associated with the GDC complex(BoGCSHBoGCSLBoGCSPBoGCST),BoMTHFR,and BoSHMT1a were significantly upregulated in Q428,while the expression of BoGGH was significantly downregulated. The differential expression of these genes is preliminarily hypothesized to be a key factor affecting the folate content in cabbage,and these genes could serve as molecular targets for manipulating folate content in cabbage through biotechnological breeding techniques.

Key words: cabbage, folate, transcriptome, metabolome