| Peltate glandular trichomes of Colquhounia seguinii harbor new defensive clerodane diterpenoids | |
Li, Chun-Huan1,2; Liu, Yan1; Hua, Juan1; Luo, Shi-Hong1; Li, Sheng-Hong1 ; Li,SH (reprint author),Chinese Acad Sci,Kunming Inst Bot,State Key Lab Phytochem & Plant Resources West Ch,Kunming 650201,Peoples R China.; shli@mail.kib.ac.cn
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| 2014-09-01 | |
| 发表期刊 | JOURNAL OF INTEGRATIVE PLANT BIOLOGY
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| ISSN | 1672-9072 |
| 卷号 | 56期号:9页码:928-940 |
| 摘要 | Glandular trichomes produce a wide variety of secondary metabolites that are considered as major defensive chemicals against herbivore attack. The morphology and secondary metabolites of the peltate glandular trichomes of a lianoid Labiatae, Colquhounia seguinii Vaniot, were investigated. Three new clerodane diterpenoids, seguiniilactones A-C (1-3), were identified through precise trichome collection with laser microdissection, metabolic analysis with ultra performance liquid chromatography-tandem mass spectrometer, target compound isolation with classical phytochemical techniques, structure elucidation with spectroscopic methods. All compounds showed significant antifeedant activity against a generalist plant-feeding insect Spodoptera exigua. Seguiniilactone A (1) was approximately 17-fold more potent than the commercial neem oil. -Substituted ,-unsaturated -lactone functionality was found to be crucial for strong antifeedant activity of this class of compounds. Quantitative results indicated that the levels of these compounds in the peltate glandular trichomes and leaves were sufficiently high to deter the feeding by generalist insects. Moderate antifungal activity was observed for seguiniilactone C (3) against six predominant fungal species isolated from the diseased leaves of C. seguinii, while seguiniilactones A and B were generally inactive. These findings suggested that seguiniilactones A-C might be specialized secondary metabolites in peltate glandular trichomes for the plant defense against insect herbivores and pathogens. |
| 关键词 | Colquhounia Seguinii Vaniot Peltate Glandular Trichomes Laser Microdissection Clerodane Diterpenoids Antifeedant And Antifungal Activities |
| 学科领域 | Biochemistry & Molecular Biology ; Plant Sciences |
| DOI | 10.1111/jipb.12242 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000341915900011 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.kib.ac.cn/handle/151853/18389 |
| 专题 | 植物化学与西部植物资源持续利用国家重点实验室 |
| 通讯作者 | Li,SH (reprint author),Chinese Acad Sci,Kunming Inst Bot,State Key Lab Phytochem & Plant Resources West Ch,Kunming 650201,Peoples R China.; shli@mail.kib.ac.cn |
| 作者单位 | 1.Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Chun-Huan,Liu, Yan,Hua, Juan,et al. Peltate glandular trichomes of Colquhounia seguinii harbor new defensive clerodane diterpenoids[J]. JOURNAL OF INTEGRATIVE PLANT BIOLOGY,2014,56(9):928-940. |
| APA | Li, Chun-Huan.,Liu, Yan.,Hua, Juan.,Luo, Shi-Hong.,Li, Sheng-Hong.,...&shli@mail.kib.ac.cn.(2014).Peltate glandular trichomes of Colquhounia seguinii harbor new defensive clerodane diterpenoids.JOURNAL OF INTEGRATIVE PLANT BIOLOGY,56(9),928-940. |
| MLA | Li, Chun-Huan,et al."Peltate glandular trichomes of Colquhounia seguinii harbor new defensive clerodane diterpenoids".JOURNAL OF INTEGRATIVE PLANT BIOLOGY 56.9(2014):928-940. |
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