期刊
PLANT SIGNALING & BEHAVIOR
卷 5, 期 1, 页码 61-63出版社
TAYLOR & FRANCIS INC
DOI: 10.4161/psb.5.1.10161
关键词
terpene; dioecy; kiwifruit; volatile; ecology; evolution; flower
Kiwifruit species are vigorously-growing dioecious vines that rely on bees and other insects for pollen transfer between spatially separated male and female individuals. Floral volatile terpene cues for insect pollinator attraction were characterized from flowers of the most widely grown and economically important kiwifruit cultivar Actinidia deliciosa 'Hayward' and its male pollinator 'Chieftain'. The sesquiterpenes alpha-farnesene and germacrene D dominated in all floral tissues and the emission of these compounds was detected throughout the day, with lower levels at night. Two terpene synthase (TPS) genes were isolated from A. deliciosa petals that produced (+)-germacrene D and (E, E)-afarnesene respectively. Both TPS genes were expressed in the same tissues and at the same times as their corresponding floral volatiles. Here we discuss these results with respect to plant and insect ecology and the evolution and structure of sesquiterpene synthases.
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