Enhanced Chlorophyll Degradation Triggers the Pod Degreening of "Golden Hook," a Special Ecotype in Common Bean (Phaseolus vulgarisL.)
文献类型： 外文期刊
作者： Hu, Bo 1 ; Zhu, Jinlong 1 ; Wu, Hongyan 1 ; Xu, Kun 1 ; Zhai, Hong 1 ; Guo, Ning 1 ; Gao, Yi 1 ; Yang, Jiayin 3 ; Zhu, Danhu 1 ;
作者机构： 1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Soybean Mol Design Breeding, Harbin, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Huaiyin Inst Agr Sci Xuhuai Reg, Huaian, Peoples R China
4.Zhejiang Acad Agr Sci, Hangzhou, Peoples R China
关键词： common bean (Phaseolus vulgarisL; ); degreening; pod; transcriptome; cellulose
期刊名称：FRONTIERS IN GENETICS （ 影响因子：4.599； 五年影响因子：4.888 ）
ISSN：
年卷期： 2020 年 11 卷
页码：
收录情况： SCI
摘要： To reveal genetic factors or pathways involved in the pod degreening, we performed transcriptome and metabolome analyses using a yellow pod cultivar of the common bean "golden hook" ecotype and its green pod mutants yielded via gamma radiation. Transcriptional profiling showed that expression levels of red chlorophyll catabolite reductase (RCCR,Phvul.008G280300) involved in chlorophyll degradation was strongly enhanced at an early stage (2 cm long) in wild type but not in green pod mutants. The expression levels of genes involved in cellulose synthesis was inhibited by the pod degreening. Metabolomic profiling showed that the content of most flavonoid, flavones, and isoflavonoid was decreased during pod development, but the content of afzelechin, taxifolin, dihydrokaempferol, and cyanidin 3-O-rutinoside was remarkably increased in both wild type and green pod mutant. This study revealed that the pod degreening of the golden hook resulting from chlorophyll degradation could trigger changes in cellulose and flavonoids biosynthesis pathway, offering this cultivar a special color appearance and good flavor.
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