Comparative transcriptome and defense hormone analyses of resistant and susceptible tea plant varieties revealed the response mechanisms of tea plants to Apolygus lucorum feeding

作者：Yuan-Hong Wan, Chun Yang, Dahe Qiao, Yuexin Li, Xiaozeng Mi, Xingyun Shi, Shuai Li, Jin-Feng Zhang, Yuhe Wan, Ze-Hong Meng · 发表于：Plant Stress · 年份：2025 · DOI：10.1016/j.stress.2025.100989 · 被引用次数：3 · 研究领域：Allelopathy and phytotoxic interactions、Tea Polyphenols and Effects、Mycotoxins in Agriculture and Food

• TX0310 exhibited stronger, sustained defense responses to Apolygus lucorum feeding stress. • The resistant variety TX0310 significantly suppressed the activity of detoxification enzymes and digestive enzymes in Apolygus lucorum . • Secondary metabolism pathways in TX0310 boosted terpene and antipest compound synthesis. • Jasmonic acid (JA) and salicylic acid (SA) levels increased significantly in TX0310. • Overexpression of CsOPR11 in tobacco resulted in significantly higher levels of MeJA (methyl jasmonate) in CsOPR11 -transgenic plants compared to wild-type (WT) controls. Apolygus lucorum represents a major insect pest affecting Camellia sinensis , with its feeding activity posing significant threats to tea plant growth and yield productivity. However, the molecular basis of tea plant resistance against A. lucorum infestation remains poorly characterized. In this study, we employed two distinct tea varieties, the resistant variety Taixuan 0310 (TX0310) and the susceptible variety Huangjinya (HJY), for comparative analysis. Phenotypic evaluation revealed consistently less severe damage symptoms in TX0310 compared to HJY under identical infestation conditions. Through transcriptome sequencing approaches and integrated phytohormone profiling, we systematically elucidated the differential defense responses to A. lucorum . The resistant variety TX0310 exhibited sustained and comprehensive activation of both jasmonic acid (JA) signaling cascades and secondary metabolic pathways...