التفاصيل البيبلوغرافية
| العنوان: |
CsAP3: A Cucumber Homolog to Arabidopsis APETALA3 with Novel Characteristics. |
| المؤلفون: |
Jin-Jing Sun, Feng Li, Dong-Hui Wang, Xiao-Feng Liu, Xia Li, Na Liu, Hai-Tao Gu, Cheng Zou, Jing-Chu Luo, Chao-Xing He, San-Wen Huang, Xiao-Lan Zhang, Zhi-Hong Xu, Shu-Nong Bai |
| المصدر: |
Frontiers in Plant Science; 8/4/2016, p1-15, 15p |
| مصطلحات موضوعية: |
CUCUMBER genetics, FLOWERING of plants, ARABIDOPSIS |
| مستخلص: |
In our previous efforts to understand the regulatory mechanisms of cucumber unisexual flower development, we observed a stamen-specific down-regulation of the ethylene receptor CsETR1 in stage 6 female flowers of cucumber (Cucumis sativus L.). This down-regulation is correlated with the primordial anther-specific DNA damage that characterizes inappropriate stamen development in cucumber female flowers. To understand how CsETR1 is down regulated in the stamen, we characterized a cucumber MADS box gene homologous to Arabidopsis AP3, CsAP3. We demonstrated that CsAP3 is functionally equivalent to the Arabidopsis B-class MADS gene AP3. However, three novel characteristics of CsAP3 were found. These include firstly, binding and activating CsETR1 promoter in vitro and in vivo; secondly, containing a GV repeat in its C-terminus, which is conserved in cucurbits and required for the transcription activation; and thirdly, decreased expression as the node number increases, which is similar to that found for CsETR1. These findings revealed not only the conserved function of CsAP3 as a B-class floral identity gene, but also its unique functions in regulation of female flower development in cucumber. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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