Arabidopsis histidine kinase cki1 acts upstream of histidine phosphotransfer proteins to regulate female gametophyte development and vegetative growth
文献类型：期刊论文
| 作者 | Deng, Yan1,2,3; Dong, Haili1,2,3; Mu, Jinye1,2; Ren, Bo1,2,3; Zheng, Binglian1,2,3; Ji, Zhendong1,2,3; Yang, Wei-Cai1,2; Liang, Yan1,2; Zuo, Jianru1,2 |
| 刊名 | Plant cell
 |
| 出版日期 | 2010-04-01 |
| 卷号 | 22期号:4页码:1232-1248 |
| ISSN号 | 1040-4651 |
| DOI | 10.1105/tpc.108.065128 |
| 通讯作者 | Zuo, jianru(jrzuo@genetics.ac.cn) |
| 英文摘要 | Cytokinin signaling is mediated by a multiple-step phosphorelay. key components of the phosphorelay consist of the histidine kinase (hk)-type receptors, histidine phosphotransfer proteins (hp), and response regulators (rrs). whereas overexpression of a nonreceptor-type hk gene cytokinin-independent1 (cki1) activates cytokinin signaling by an unknown mechanism, mutations in cki1 cause female gametophytic lethality. however, the function of cki1 in cytokinin signaling remains unclear. here, we characterize a mutant allele, cki1-8, that can be transmitted through female gametophytes with low frequency (similar to 0.17%). we have recovered viable homozygous cki1-8 mutant plants that grow larger than wild-type plants, show defective megagametogenesis and rarely set enlarged seeds. we found that cki1 acts upstream of ahp (arabidopsis hp) genes, independently of cytokinin receptor genes. consistently, an ahp1,2-2,3,4,5 quintuple mutant, which contains an ahp2-2 null mutant allele, exhibits severe defects in megagametogenesis, with a transmission efficiency of <3.45% through female gametophytes. rarely recovered ahp1,2-2,3,4,5 quintuple mutants are seedling lethal. finally, the female gametophytic lethal phenotype of cki1-5 (a null mutant) can be partially rescued by ipt8 or arr1 (a type-b arabidopsis rr) driven by a cki1 promoter. these results define a genetic pathway consisting of cki1, ahps, and type-b arrs in the regulation of female gametophyte development and vegetative growth. |
| WOS关键词 | CYTOKININ SIGNAL-TRANSDUCTION ; TRANSGENIC PLANTS ; CELL FATE ; RECEPTOR ; ROOT ; SHOOT ; BIOSYNTHESIS ; PERCEPTION ; THALIANA ; STRESS |
| WOS研究方向 | Biochemistry & Molecular Biology ; Plant Sciences ; Cell Biology |
| WOS类目 | Biochemistry & Molecular Biology ; Plant Sciences ; Cell Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:000278414900021 |
| 出版者 | AMER SOC PLANT BIOLOGISTS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2408273 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zuo, Jianru |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Plant Genom, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Inst Genet & Dev Biol, Natl Plant Gene Res Ctr, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Deng, Yan,Dong, Haili,Mu, Jinye,et al. Arabidopsis histidine kinase cki1 acts upstream of histidine phosphotransfer proteins to regulate female gametophyte development and vegetative growth[J]. Plant cell,2010,22(4):1232-1248. |
| APA | Deng, Yan.,Dong, Haili.,Mu, Jinye.,Ren, Bo.,Zheng, Binglian.,...&Zuo, Jianru.(2010).Arabidopsis histidine kinase cki1 acts upstream of histidine phosphotransfer proteins to regulate female gametophyte development and vegetative growth.Plant cell,22(4),1232-1248. |
| MLA | Deng, Yan,et al."Arabidopsis histidine kinase cki1 acts upstream of histidine phosphotransfer proteins to regulate female gametophyte development and vegetative growth".Plant cell 22.4(2010):1232-1248. |
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来源：中国科学院大学
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