西北林学院学报2026，Vol.41Issue(3)：77-88,12.DOI:10.3969/j.issn.1001-7461.2026.03.08
外源施加抑花剂影响黑沙蒿开花与生长的调控机制
Molecular Basis of Effects of the Exogenous Flowering Inhibitor on Flowering and Growth in Artemisia ordosica Krasch
摘要
Abstract
To investigate the potential regulatory mechanisms of flower suppressants on flowering and growth in Artemisia ordosica Krasch.,differentially expressed genes(DEGs)were screened using tran-scriptomic analysis.By combining metabolomic and transcriptomic analyses,we systematically elucidated the regulatory network of plant hormone signaling pathways,metabolite accumulation,and gene expression affected by the flower suppressant.The plant hormones,their associated genes and the metabolic pathways influenced by the suppressant were analyzed.Morphological observations revealed that after the application of the flower suppressant,the size and weight of floral buds were significantly reduced compared to the control group,while the length and branching degree of secondary inflorescence branches were markedly increased.Metabolomic analyses showed that in treated flowers,gibberellins(GAs),strigolactones(SLs),auxins,and jasmonic acid(JA)hormone clusters were upregulated;whereas certain auxin-and cytokinin-related hormone clusters were downregulated.In pedicels,some GA-,auxin-,and JA-related hormone clus-ters were upregulated.These findings are consistent with the transcriptomic results.Integrated analysis of differentially expressed metabolites and genes from both datasets identified the diterpenoid biosynthesis pathway as the most significant pathway influencing metabolite profiles and phenotypic characteristics.Ex-ogenous application of a flower suppressant significantly altered the phenotypic traits of A.ordosica.The primary molecular mechanism involves the regulation of gene expression that affects hormone content which macroscopically manifests as the suppression of reproductive development and promotion of vegeta-tive growth.The reduction in allergenicity is attributed to the downregulation of allergenic components and inhibition of reproductive development.关键词
黑沙蒿/植物生长调节剂/转录组/代谢组Key words
Artemisia ordosica Krasch./plant growth regulators/transcriptome/metabolome分类
农业科技引用本文复制引用
乔占国,姚剑韩,符婧萱,孙慧,罗鑫,刘生权,张婵婵,郭彩云,李梦迪..外源施加抑花剂影响黑沙蒿开花与生长的调控机制[J].西北林学院学报,2026,41(3):77-88,12.基金项目
榆林市科技计划项目"沙蒿花粉控制技术研究"(19-23). （19-23）
