Wei Juan, Liu Xiaoli, Li Chan, Yang Yuanzhao, Song Cancan, Chen Yihao, Ciren Qiongda, Jiang Chunxian, Li Qing
College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China.
Chengdu Botanical Garden (Chengdu Park Urban Plant Science Research Institute), Chengdu 610083, China.
Insects. 2024 Jun 14;15(6):454. doi: 10.3390/insects15060454.
, the city flower of Chengdu, is culturally significant and has nutritional and medicinal benefits. However, frequent infestations of have caused economic losses. This study aimed to identify insect-resistant varieties. Over two years, varieties like Jinqiusong, Zuiyun, and Zuifurong showed moderate to high resistance based on reproductive indices. Assessments of antixenosis and developmental impacts revealed that adult exhibited low selectivity toward these resistant varieties, indicating a strong repellent effect. Gas chromatography-mass spectrometry analysis identified volatile organic compounds, such as alcohols, alkanes, and terpenes. Notably, 2-ethylhexanol and 6-methylheptanol exhibited repellent properties. Using nontargeted metabolomics, this study compared the metabolite profiles of the insect-resistant variety Jinqiusong (JQS), moderately resistant Bairihuacai (BRHC), and highly susceptible Chongbanbai (CBB) post infestation. Fifteen key metabolites were linked to resistance, emphasizing the phenylpropanoid biosynthesis pathway as crucial in defense. These findings offer a theoretical foundation for breeding insect-resistant varieties and developing eco-friendly strategies against infestations.
作为成都的市花，具有重要的文化意义，且具有营养和药用价值。然而，频繁遭受虫害导致了经济损失。本研究旨在鉴定抗虫品种。在两年多的时间里，基于繁殖指标，金秋颂、醉云、醉芙蓉等品种表现出中度至高抗性。对排趋性和发育影响的评估表明，成虫对这些抗性品种的选择性较低，表明具有很强的驱避作用。气相色谱-质谱分析鉴定出挥发性有机化合物，如醇类、烷烃和萜类。值得注意的是，2-乙基己醇和6-甲基庚醇具有驱避特性。本研究采用非靶向代谢组学方法，比较了抗虫品种金秋颂（JQS）、中度抗性的白里花菜（BRHC）和高度敏感的重瓣白（CBB）在遭受虫害后的代谢物谱。15种关键代谢物与抗性相关，强调苯丙烷生物合成途径在防御中至关重要。这些发现为培育抗虫品种和制定针对虫害的生态友好策略提供了理论基础。
