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
2014-09-01
发表期刊JOURNAL OF INTEGRATIVE PLANT BIOLOGY
ISSN1672-9072
卷号56期号:9页码:928-940
产权排序第一
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
资助信息NSFC-Yunnan Joint Fund [U1202263]; National Basic Research Program of China (973 Program) on Biological Control of Key Crop Pathogenic Nematodes [2013CB127505]; National Natural Science Foundation of China [31070320, 31470395, 31100222]; Chinese Academy of Sciences
学科领域Biochemistry & Molecular Biology ; Plant Sciences
DOI10.1111/jipb.12242
收录类别SCI
语种英语
WOS研究方向Biochemistry & Molecular Biology ; Plant Sciences
WOS类目Biochemistry & Molecular Biology ; Plant Sciences
WOS记录号WOS:000341915900011
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
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
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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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