Wound-induced green leaf volatiles cause the release of acetylated derivatives and a terpenoid in maize.
Green leaf volatiles (GLVs), generally occurring C6 alcohols, aldehydes and acetates from plants, play an important role in plant-plant communication. These compounds induce intact plants to produce jasmonic acid, and induce defense-related gene expression and the release of volatile compounds. Here, we address wound-induced GLVs cause the release of acetylated derivatives and a terpenoid, (E)-4,8-dimethylnona-1,3,7-triene (DMNT) in intact maize, which may be a type of plant-plant interaction mediated by airborne GLVs. Upon exposure of intact maize seedlings to wound-induced GLVs, (Z)-3-hexenyl acetate was consistently the most abundant compound released. Exogenous application of individual alcohols and aldehydes mostly resulted in the release of corresponding acetate esters. C6-alcohols with a double bond between the second and third, or the third and fourth carbon atoms, C5- or C6-aldehydes, and (Z)-3-hexenyl acetate triggered the release of DMNT. When (Z)-3-hexenyl acetate and hexyl acetate were used to treat maize seedlings, they were recovered from the plants. These data demonstrated that: (1) apart from direct adsorption and re-release of acetate esters, absorption and conversion of exogenous alcohols and aldehydes into acetate esters occurred, and (2) DMNT was induced by a range of aldehydes and unsaturated alcohols.
Yan
Zeng-Guang
ZG
State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, The Chinese Academy of Sciences, 25 Beisihuanxi Road, Haidian, Beijing 100080, China.
Wang
Chen-Zhu
CZ
D000085:Acetates / Q000737:chemistry* / Q000378:metabolism; D000438:Alcohols / Q000737:chemistry / Q000378:metabolism; D000447:Aldehydes / Q000737:chemistry / Q000378:metabolism; D000475:Alkenes / Q000737:chemistry / Q000378:metabolism; D018515:Plant Leaves / Q000737:chemistry* / Q000502:physiology; D013729:Terpenes / Q000737:chemistry* / Q000378:metabolism; D013997:Time Factors; D014835:Volatilization; D003313:Zea mays / Q000737:chemistry* / Q000378:metabolism*
C411254:4,8-dimethyl-1,3,7-nonatriene; D000085:Acetates; D000438:Alcohols; D000447:Aldehydes; D000475:Alkenes; D013729:Terpenes