ibclogo XVI International Botanical Congess


Abstract Number: 2635
Poster No. = 1881


Promoter analysis of the melon ethylene receptor genes, Cm-ETR1 and Cm-ERS1


Moez Torki1, Kumi Sato-Nara1, Ken-Ichi Yuhashi2 and Hiroshi Ezura1, 1 PBI-IAC, Nishiibaraki 319-0292, Japan, 2 Institute of Genetic Ecology, Tohuku University, Japan


In climacteric fruits, tissues undergo ethylene-mediated development. Ethylene response is determined through a regulation of ethylene production, its perception and the activation of ethylene-regulated genes. Previously, we described the characterization of two cDNA clones, Cm-ETR1 and Cm-ERS1, encoding ethylene receptors of melon that differentially accumulate during fruit development. It is most likely that ethylene sensitivity in melon is regulated by ethylene itself and is maintained by a concerted action of different receptors. To understand how these receptors are regulated during fruit ripening and by ethylene we isolated Cm-ETR1 and Cm-ERS1 from a genomic library and fused their promoter to a GUS reporter gene. Transient expression assay is in progress.


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