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Characterization of a Purine Permease Family Gene OsPUP7 Involved in Growth and Development Control in Rice 被引量:15
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作者 Zhuyun Qi Lizhong Xiong 《Journal of Integrative Plant Biology》 SCIE CAS CSCD 2013年第11期1119-1135,共17页
In this study, PUP-type cytokinin transporter genes were identified in rice (Oryza sativa L.). The Oryza sativa purine permease (OsPUP) family has 12 members that show similar predicted protein sequences with AtPU... In this study, PUP-type cytokinin transporter genes were identified in rice (Oryza sativa L.). The Oryza sativa purine permease (OsPUP) family has 12 members that show similar predicted protein sequences with AtPUPs. To reveal the functions of OsPUP genes, we searched the T-DNA mutant library of rice and found one mutant for the member OsPUP7. The T-DNA insertion caused a new transcript that encodes a protein with 26 amino acids different from the native OsPUP7 at the C-terminus. The mutant showed multiple phenotypic changes including increased plant height, big seeds, and delayed flowering. The mutant also showed increased sensitivity to drought and salt stresses and treatments with kinetin and abscisic acid. OsPUP7is expressed mainly in the vascular bundle, pistil, and stamens. The measurement of cytokinins (CKs) showed that CK content in the mutant spikelets accumulated higher than that in the wild type. Moreover, uptake experiment in the yeast fcy2 mutant suggested that OsPUP7 has the ability to transport caffeine, a CK derivative. Our results indicate that the PUP transport system also exists in rice, and OsPUP7has an important role in the transport of CK, thus affecting developmental process and stress responses. 展开更多
关键词 Abiotic stress CYTOKININ purine permease TRANSPORTER rice.
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植物PUP转运蛋白研究进展
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作者 赵玥 沈晓凤 孙超 《植物生理学报》 CAS 2024年第11期1613-1619,共7页
植物PUP(purine uptake permease)转运蛋白是植物体内常见的转运蛋白之一,主要参与了植物激素和生物碱等物质的吸收转运过程,是转运系统中的关键组分,对调节生长发育和应对非生物胁迫等具有重要的作用。本文对PUP家族的发现、分类、结... 植物PUP(purine uptake permease)转运蛋白是植物体内常见的转运蛋白之一,主要参与了植物激素和生物碱等物质的吸收转运过程,是转运系统中的关键组分,对调节生长发育和应对非生物胁迫等具有重要的作用。本文对PUP家族的发现、分类、结构、功能及调控等方面研究成果进行综述,并对PUP家族蛋白的未来应用前景进行了展望。 展开更多
关键词 PUP(purine uptake permease) 结构 功能 调控
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