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Reactive oxygen species mediate IAA-induced ethylene production in mungbean (Vigna radiata L) hypocotyls

Title
Reactive oxygen species mediate IAA-induced ethylene production in mungbean (Vigna radiata L) hypocotyls
Authors
Song, Yoon JungJoo, Jung HeeRyu, Hee YoungLee, June SeungBae, Yun SooNam, Kyoung Hee
Ewha Authors
이준승배윤수남경희주정희
SCOPUS Author ID
이준승scopusscopus; 배윤수scopus; 주정희scopusscopus
Issue Date
2007
Journal Title
JOURNAL OF PLANT BIOLOGY
ISSN
1226-9239JCR Link
Citation
vol. 50, no. 1, pp. 18 - 23
Keywords
ACC oxidaseACC synthaseauxin-induced ethylene productionROS
Publisher
BOTANICAL SOCIETY OF KOREA
Indexed
SCIE; SCOPUS; KCI WOS scopus
Abstract
We reported previously that ROS may function as a downstream component for signaling auxin, a hormone that induces the ethylene production. Here we demonstrated that ROS can act upstream to promote auxin-induced ethylene production in mungbean hypocotyls. When plants were treated with AVG, ethylene biosynthetic inhibitor, or ACC, ethylene precursor, we found that little effect on the ROS generation. Hypocotyls exposed to H2O2 showed higher ethylene accumulations compared with untreated samples. Furthermore, auxin-induced ethylene production was reduced when tissues were pre-treated with a ROS scavenger, N-acetyl-L-cystein (NAC). We attributed this stimulatory effect to the activation of ethylene biosynthetic enzymes that results from transcriptional up-regulation of VR-ACS1 and VR-ACS7 to encode ACC synthase, as well as of VR-ACO1 and VR-ACO2, which encode ACC oxidase.
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자연과학대학 > 생명과학전공 > Journal papers
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