期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 63, 期 45, 页码 10004-10012出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.5b04113
关键词
Paragutzlaffia henryi; capitate glandular trichomes; laser microdissetion; labdane diterpenoids; phytotoxic
资金
- National Science Fund for Distinguished Young Scholars [31525005]
- National Basic Research Program of China (973 Program) on Biological Control of Key Crop Pathogenic Nematodes [2013CB127505]
- NSFC-Yunnan Joint Fund [U1202263]
- Hundred Talents Program of the Chinese Academy of Sciences
The morphology and chemical profile of the capitate glandular trichomes (CGTs) of Paragutzlaffia henryi (Acanthaceae) were investigated. Four new labdane diterpenoids named paraguhenryisins A-D (1-4), together with the known physacoztomatin (5), were localized to the CGTs using laser microdissection coupled with cryogenic H-1 NMR and HPLC analyses and were traced and isolated from the CGT extract of inflorescences. Their structures were determined by spectroscopic methods and single-crystal X-ray diffraction. Bioassays indicated significant inhibitory effect for these diterpenoids on Arabidopsis thaliana seed germination and seedling root elongation. The most potent inhibitor, paraguhenryisin C (3), was interestingly detected in both the rhizosphere soil and water rinsed inflorescences extract of P. henryi but not the roots, with average contents in the rhizosphere soil relevant to its phytotoxic EC50 values. These results suggested that phytotoxic labdane diterpenoids in the CGTs might be released into the environment as a defensive measure for P. henryi against other competitive plants.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据