Ethylene and cold participate in the regulation of LeCBF1 gene expression in postharvest tomato fruits.
C-repeat/dehydration-responsive element binding factor (CBF) is a transcription factor regulating cold response in plants, of which little is known in fruits. We showed a double-peak expression pattern of Lycopersicon esculentum putative transcriptional activator CBF1 (LeCBF1) in mature green fruit. The peaks appeared at 2 and 16 h after subjection to cold storage (2 degrees C). The second peak was coincident with, and thus caused by a peak in endogenous ethylene production. We showed that LeCBF1 expression was regulated by exogenous ethylene and 1-methylcyclopropene, and was not expressed without cold induction. LeCBF1 expression was different in the five maturation stages of fruits, but expression peaked at 2 h at all stages.
Zhao
Danying
D
College of Food Science and Nutritional Engineering, China Agriculture University, Beijing 100083, China.
Shen
Lin
L
Fan
Bei
B
Yu
Mengmeng
M
Zheng
Yang
Y
Lv
Shengnan
S
Sheng
Jiping
J
D003080:Cold Temperature; D003521:Cyclopropanes / Q000378:metabolism; D005030:Ethylenes / Q000378:metabolism*; D005638:Fruit / Q000235:genetics / Q000378:metabolism; D018506:Gene Expression Regulation, Plant; D018551:Solanum lycopersicum / Q000235:genetics / Q000378:metabolism; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism
D003521:Cyclopropanes; D005030:Ethylenes; D010940:Plant Proteins; D014157:Transcription Factors; C036216:ethylene; C412563:1-methylcyclopropene