Authors
Yiwei Peng, Jianling Lv, Jiamei Zou, Jing Meng, Xuejiao Li, Jingli Zhang, Gengyun Li, Yongfu Peng, Liang Wei, Bin Liu, Shuilian He
Published in
Genes. Volume 17. Issue 3. Feb 27, 2026. Epub Feb 27, 2026.
Abstract
The 3-ketoacyl-CoA synthase (KCS) enzyme is a key and rate-limiting component in the biosynthesis of very long-chain fatty acids (VLCFAs). Through controlling VLCFA production, KCS plays an essential role in plant cuticle formation. The necrotrophic fungus Botrytis cinerea can infect all aboveground parts of rose plants (flowers, leaves, and stems), causing severe economic losses. KCS restricts pathogen invasion by influencing cuticle formation and enhances tolerance to environmental stresses. While the KCS gene family has been well-studied in some plants, it remains unexplored in rose (Rosa × hybrida Hort.), a species of significant ornamental and economic value.
In this study, we conducted a genome-wide analysis of the RcKCS gene family in rose, identifying 18 non-redundant genes. Phylogenetic, structural, and synteny analyses were performed to investigate the evolutionary relationships, gene architecture, and duplication events. The expression patterns of RcKCS genes in rose petals during B. cinerea infection were examined, and transient overexpression and silencing of RcKCS6 were used to study its function.
RcKCS6 was found to be upregulated during gray mold infection, and transient overexpression reduced lesion size on infected petals.
Our study provides the first comprehensive analysis of the RcKCS gene family in rose and highlights RcKCS6 as a potential candidate for improving resistance to gray mold in rose through molecular breeding.
PMID:
41898820
Bibliographic data and abstract were imported from PubMed on 14 Sep 2026.
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