Plant Diversity ›› 2017, Vol. 39 ›› Issue (03): 154-159.DOI: 10.1016/j.pld.2017.05.004

• Articles • Previous Articles    

Localization of a defensive volatile 4-hydroxy-4-methylpentan-2-one in the capitate glandular trichomes of Oenothera glazioviana

Yanyun Tana,b,c, Desen Lia,b,c, Juan Huaa,b,c, Shihong Luoa,b, Yan Liua,b, Shenghong Lia,b   

  1. a. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China;
    b. Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, PR China;
    c. University of Chinese Academy of Sciences, Beijing 100049, PR China
  • Received:2017-02-28 Revised:2017-05-10 Published:2021-11-05
  • Contact: Yan Liu, Shenghong Li
  • Supported by:
    This research was supported financially by the National Science Fund for Distinguished Young Scholars (31525005), the NSFCYunnan Joint Fund (U1202263), the National Basic Research Program of China (973 Program) on Biological Control of Key Crop Pathogenic Nematodes (2013CB127505), and the “Hundred Talents Program” of the Chinese Academy of Sciences (awarded to S.-H. Li).

Abstract: Glandular trichomes of plants produce a wide variety of secondary metabolites which are considered as major defensive chemicals. The capitate glandular trichomes of Oenothera glazioviana (Onagraceae) were collected with laser microdissection and analyzed by gas chromatography–mass spectrometry. The volatile compound 4-hydroxy-4-methylpentan-2-one (1) was identified. We found that compound 1 displays antimicrobial, insecticidal, and phytotoxic activities. These results suggest that compound 1 might function as a defensive compound in the capitate glandular trichomes of O. glazioviana against pathogens, insect herbivores, and presumably competitive plants as well.

Key words: Oenothera glazioviana, Capitate glandular trichomes, Laser microdissection, 4-Hydroxy-4-methylpentan-2-one, Defensive functions