Transport functions and expression analysis of vacuolar membrane aquaporins in response to various stresses in rice

The vacuole, a multifunctional organelle of most plant cells, has very important roles in space filling, osmotic adjustment, storage and digestion. Previous researches suggested that aquaporins in the tonoplast were involved in vacuolar functions. The rice genome contains 33 aquaporin genes, 10 of w...

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Veröffentlicht in:Journal of plant physiology. - 1979. - 165(2008), 18 vom: 15. Dez., Seite 1879-88
1. Verfasser: Li, Guo-Wei (VerfasserIn)
Weitere Verfasser: Peng, Yan-Hui, Yu, Xin, Zhang, Min-Hua, Cai, Wei-Ming, Sun, Wei-Ning, Su, Wei-Ai
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2008
Zugriff auf das übergeordnete Werk:Journal of plant physiology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Aquaporins Membrane Proteins Plant Proteins RNA, Messenger tonoplast intrinsic protein, plant Water 059QF0KO0R Abscisic Acid mehr... 72S9A8J5GW Glycerol PDC6A3C0OX
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245 1 0 |a Transport functions and expression analysis of vacuolar membrane aquaporins in response to various stresses in rice 
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520 |a The vacuole, a multifunctional organelle of most plant cells, has very important roles in space filling, osmotic adjustment, storage and digestion. Previous researches suggested that aquaporins in the tonoplast were involved in vacuolar functions. The rice genome contains 33 aquaporin genes, 10 of which encode tonoplast intrinsic proteins (TIPs). However, the function of each individual TIP isoform and the integrated function of TIPs under various physiological conditions remain elusive. Here, five rice TIP members were characterized with water and/or glycerol transport activities using the Xenopus oocyte expression system. OsTIP1;2, OsTIP2;2, OsTIP4;1 and OsTIP5;1 possessed water transport activity. OsTIP1;2, OsTIP3;2 and OsTIP4;1 were demonstrated with glycerol transport activity. Rice TIP expression patterns under various abiotic stress conditions including dehydration, high salinity, abscisic acid (ABA) and during seed germination were investigated by real-time PCR. OsTIP1s (OsTIP1;1 and OsTIP1;2) were highly expressed during seed germination, whereas OsTIP3s (OsTIP3;1 and OsTIP3;2) were specifically expressed in mature seeds with a decrease in expression levels upon germination. The results of this research provided a functional and expression profiles of rice TIPs 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 7 |a Aquaporins  |2 NLM 
650 7 |a Membrane Proteins  |2 NLM 
650 7 |a Plant Proteins  |2 NLM 
650 7 |a RNA, Messenger  |2 NLM 
650 7 |a tonoplast intrinsic protein, plant  |2 NLM 
650 7 |a Water  |2 NLM 
650 7 |a 059QF0KO0R  |2 NLM 
650 7 |a Abscisic Acid  |2 NLM 
650 7 |a 72S9A8J5GW  |2 NLM 
650 7 |a Glycerol  |2 NLM 
650 7 |a PDC6A3C0OX  |2 NLM 
700 1 |a Peng, Yan-Hui  |e verfasserin  |4 aut 
700 1 |a Yu, Xin  |e verfasserin  |4 aut 
700 1 |a Zhang, Min-Hua  |e verfasserin  |4 aut 
700 1 |a Cai, Wei-Ming  |e verfasserin  |4 aut 
700 1 |a Sun, Wei-Ning  |e verfasserin  |4 aut 
700 1 |a Su, Wei-Ai  |e verfasserin  |4 aut 
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