A knockdown mutation of YELLOW-GREEN LEAF2 blocks chlorophyll biosynthesis in rice

作者：Hong Chen • Zhijun Cheng • Xiaoding Ma • Han Wu • Yanling Liu • Kunneng Zhou • Yilin Chen • Weiwei Ma • Jingcui Bi • Xin Zhang • Xiuping Guo • Jiulin Wang • Cailin Lei • Fuqing Wu • Qibing Lin • Yuqiang Liu • Linglong Liu • Ling Jiang

影响因子：

刊物名称：Plant Cell Rep

出版年份：2013

卷：  期：32  页码：1855–1867

文章摘要：

Abstract Heme oxygenase (HO) in higher plants catalyzes the degradation of heme to synthesize phytochrome precursor and its roles conferring the photoperiodic control of flowering in rice have been revealed. However, its involvement in regulating rice chlorophyll (Chl) synthesis is not fully explored. In this study, we isolated a rice mutant named yellow-green leaf 2 (ygl2) from a 60Coirradiated population. Normal grown ygl2 seedlings showed yellow-green leaves with reduced contents of Chl and tetrapyrrole intermediates whereas an increase of Chl a/b ratio. Ultrastructural analyses demonstrated grana were poorly stacked in ygl2 mutant, resulting in underdevelopment of chloroplasts. The ygl2