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
Source PublicationJOURNAL OF INTEGRATIVE PLANT BIOLOGY
ISSN1672-9072
Volume56Issue:9Pages:928-940
Contribution Rank第一
AbstractGlandular 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.
KeywordColquhounia Seguinii Vaniot Peltate Glandular Trichomes Laser Microdissection Clerodane Diterpenoids Antifeedant And Antifungal Activities
Subject AreaBiochemistry & Molecular Biology ; Plant Sciences
DOI10.1111/jipb.12242
Indexed BySCI
Language英语
WOS Research AreaBiochemistry & Molecular Biology ; Plant Sciences
WOS SubjectBiochemistry & Molecular Biology ; Plant Sciences
WOS IDWOS:000341915900011
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/18389
Collection植物化学与西部植物资源持续利用国家重点实验室
Corresponding AuthorLi,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
Affiliation1.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
Recommended Citation
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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