Abstract
We isolated two rice cDNAs (rMip1 and rTip1) which are homologous to the genes encoding the major intrinsic protein (Mip) (soybean nod-26 and Arabidopsis gamma-Tip), respectively. Expression of rTip1 in shoots and roots of rice seedlings was enhanced by water stress, salt stress and exogenous ABA. rMip1 was expressed only in shoots. Although mRNA level of rMip1 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 rMip1 and rTip1 genes may function in different transport systems.
MeSH Terms
Abscisic Acid/pharmacology
Amino Acid Sequence
Aquaporins
Conserved Sequence
Eye Proteins/genetics
Genes, Plant/genetics
Membrane Glycoproteins
Membrane Proteins/genetics
Molecular Sequence Data
Oryza/drug effects,genetics
Plant Proteins/biosynthesis,genetics
Salts/pharmacology
Sequence Homology, Amino Acid
Species Specificity
Tissue Distribution
Water/metabolism
Chemicals
Aquaporins
Eye Proteins
Membrane Glycoproteins
Membrane Proteins
Plant Proteins
Salts
aquaporin 0
nodulin
tonoplast intrinsic protein, plant
Water
Abscisic Acid
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Liu Q
Cellular Function Laboratory, Institute of Molecular and Cellular Biosciences, University of Tokyo, Japan.
Umeda M
Uchimiya H
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16 references, click to expand
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