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Isolation and expression analysis of two rice genes encoding the major intrinsic protein

✍ Scribed by Qiang Liu; Masaaki Umeda; Hirofumi Uchimiya


Publisher
Springer
Year
1994
Tongue
English
Weight
855 KB
Volume
26
Category
Article
ISSN
0167-4412

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✦ Synopsis


We isolated two rice cDNAs (rMipl and rTipl) which are homologous to the genes encoding the major intrinsic protein (Mip) (soybean nod-26 and Arabidopsis y-Tip), respectively. Expression of rTipl in shoots and roots of rice seedlings was enhanced by water stress, salt stress and exogenous ABA. rMipl was expressed only in shoots. Although mRNA level of rMipl in shoots was induced to a small extent by exogenous ABA, it did not show any increase under water or salt stress over the course of 12 h. On the basis of the differential expression patterns and evolutional distinctions, it is suggested that the possible channel proteins encoded by rMipl and rTipl genes may function in different transport systems.


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