成熟
生物
同源盒
转录因子
基因
乙烯
发起人
遗传学
基因表达
基因家族
生物合成
生物化学
植物
催化作用
作者
Chao Gu,Zhihua Guo,Haiyan Cheng,Yuhang Zhou,Kaijie Qi,Guoming Wang,Shaoling Zhang
出处
期刊:Plant Science
[Elsevier]
日期:2019-01-01
卷期号:278: 12-19
被引量:37
标识
DOI:10.1016/j.plantsci.2018.10.008
摘要
Homeobox transcription factors belong to a superfamily that has been widely studied in plant growth and development, but little is known regarding their role in fruit development and ripening. Using a genome-wide expression analysis of homeobox (HB) genes and quantitative real-time PCR, a HD-ZIP II member, PpHB.G7, which presented higher levels of expression in ripening fruits than in developing fruits in all of the tested cultivars, was isolated from peach. Transient transformations showed that PpHB.G7 affects ethylene production and the expression of ethylene biosynthesis genes (PpACS1 and PpACO1). Both dual-luciferase and yeast one-hybrid assays confirmed that PpHB.G7 interacts with the promoters of PpACS1 and PpACO1. Thus, PpHB.G7 mediates ethylene biosynthesis by stimulating PpACS1 and PpACO1 activities. Furthermore, we also found that the other eight HB genes were differentially expressed in the developing fruits, with seven of these genes belonging to the HD-ZIP family. These results suggest that the HB genes in the HD-ZIP family play important roles in fruit development and ripening.
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