BUD2, encoding an S-adenosylmethionine decarboxylase, is required for Arabidopsis growth and development |
| |
Authors: | Ge Chunmin Cui Xia Wang Yonghong Hu Yuxin Fu Zhiming Zhang Dongfen Cheng Zhukuan Li Jiayang |
| |
Institution: | State Key Laboratory of Plant Genomics and National Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China. |
| |
Abstract: | Polyamines are implicated in regulating various developmental processes in plants,but their exact roles and how they govern these processes still remain elusive.We report here an Arabidopsis bushy and dwarf mutant,bud2,which results from the complete deletion of one member of the small gene family that encodes S-adenosylmethionine decarboxylases (SAMDCs) necessary for the formation of the indispensable intermediate in the polyamine biosynthetic pathway.The bud2 plant has enlarged vascular systems in inflorescences,roots,and petioles,and an altered homeostasis ofpolyamines. The double mutant of bud2 and samdcl,a knockdown mutant of another SAMDC member,is embryo lethal,demonstrat- ing that SAMDCs are essential for plant embryogenesis.Our results suggest that polyamines are required for the normal growth and development of higher plants. |
| |
Keywords: | BUD2 polyamines embryogenesis plant architecture Arabidopsis |
本文献已被 CNKI 维普 PubMed 等数据库收录! |
|