CcBLH6, a bell-like homeodomain-containing transcription factor, regulates the fruit lignification pattern
CcBLH6, a bell-like homeodomain-containing transcription factor, regulates the fruit lignification pattern
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CcBLH6，一种含有钟状同源结构域的转录因子，调节果实木质化模式
DOI：
10.1007/s00425-021-03610-7
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发表时间：
2021-04
期刊：
影响因子：
4.3
通讯作者：
Hengfu Yin
中科院分区：
文献类型：
--
作者：
Chao Yan;Zhikang Hu;Ziyan Nie;Jiyuan Li;Xiaohua Yao;Hengfu Yin
Main conclusionCcBLH6is a bell-like homeodomain-containing transcription factor that plays an important role of lignin biosynthesis in the control of fruit lignification pattern inCamellia chekiangoleosa.AbstractThe fruit ofCamellia chekiangoleosahas a unique lignification pattern that features with a thick pericarp containing a low level of lignification. Yet the fruit lignification pattern and the regulatory network of responsible gene transcription are poorly understood. Here, we characterized a bell-like homeodomain-containing (BLH) transcription factor fromC. chekiangoleosa,CcBLH6, in the control of fruit lignification.CcBLH6expression was highly correlated with the unique lignification pattern during fruit development. The ectopic expression ofCcBLH6promoted the lignification process of stem and root in Arabidopsis. We found that expression of genes related to lignin biosynthesis and its transcriptional regulation was altered in transgenic lines. In aCamelliacallus-transformation system, overexpression ofCcBLH6greatly enhanced the expression of genes related to lignin biosynthesis and its transcriptional regulation was altered in transgenic lines. In the callus-transformation system, overexpression ofCcBLH6greatly enhanced the lignification of parenchymal cells, and the regulation of several genes involved in lignin accumulation was largely consistent between Arabidopsis andCamellia. Our study reveals a positive role ofCcBLH6in the regulation of lignin biosynthesis during fruit lignification inCamellia.
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