江西农业学报2026，Vol.38Issue(1)：70-76,7.DOI:10.19386/j.cnki.jxnyxb.2026.01.010
不良气候条件下施用植物生长调节剂对烤烟叶片代谢物质的影响
Effects of Plant Growth Regulators on Metabolites in Flue-cured Tobacco Leaves under Adverse Climatic Conditions
摘要
Abstract
To investigate the effects of the novel plant growth regulators polyglutamic acid(PGA)and algal oligosaccharides(AOS)on metabolites in flue-cured tobacco leaves,particularly their mechanisms in enhancing stress resistance under adverse climatic conditions,we designed field experiments and employed untargeted metabolomics technology(LC-MS/MS)to detect and analyze differential metabolites between treated and control tobacco leaves.The results showed that the application of AOS and PGA significantly enhanced the stress resistance of flue-cured tobacco,resulting in superior field growth compared to the conventional control.A total of 885 metabolites were identified across all samples in both groups,with lipids and lipid-like molecules accounting for the highest proportion(312,35.25%).There were 215 differentially expressed metabolites between the two groups(P＜0.05),and 62 significantly differential metabolites were identified through further screening by the OPLS-DA model(VIP＞1),most of which showed significant upregulation in the treated group L(54 metabolites).Functional analysis revealed that 8 metabolites related to tobacco stress resistance.KEGG pathway enrichment analysis indicated that the differential metabolites were mainly involved in 5 pathways.These pathways comprehensively regulate the growth and development of treated tobacco leaves through secondary metabolite synthesis,energy metabolism,and basic metabolism,thereby improving the stress resistance of flue-cured tobacco under adverse climatic conditions.关键词
烤烟/植物生长调节剂/聚谷氨酸/海藻寡糖/代谢物质/抗逆性Key words
Flue-cured tobacco/Plant growth regulators/Polyglutamic acid(PGA)/Algal oligosaccharides(AOS)/Metabolic substances/Stress resistance分类
农业科技引用本文复制引用
杨雪,罗万麟,陈剑,王波,彭勇,殷杰,王光合,高林..不良气候条件下施用植物生长调节剂对烤烟叶片代谢物质的影响[J].江西农业学报,2026,38(1):70-76,7.基金项目
中国烟草总公司四川省公司科技项目(SCYC202402). （SCYC202402）
