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Author Pitakrattananukool S., Kawakatsu T., Anuntalabhochai S., Takaiwa F.
Title Overexpression of <i>OsRab7B3</i>, a Small GTP-Binding Protein Gene, Enhances leaf senescence in Transgenic Rice.
Abstract:
Rab family proteins are small GTP-binding proteins involved in intracellular trafficking. They play critical roles in several plant development processes. Different expression patterns of 46 Rabs in the rice genome were examined in various rice tissues and in leaves treated with plant growth regulators and under senescence conditions. One of the OsRab genes, OsRab7B3, closely associated with senescence in expression pattern, was chosen for functional analysis. Expression of sGFP under the control of the OsRab7B3 promoter increased in leaves when ABA and NaCl were applied or when kept in dark. In transgenic rice overexpressing OsRab7B3, the senescence-related genes were upregulated and leaf senescence was significantly enhanced under dark conditions. Moreover, leaf yellowing occurred earlier in the transgenic plants than in the wild type at the ripening stage. Hence it is suggested that OsRab7B3 act as a stress-inducible gene that plays an important role in the leaf senescence process.
Journal Biosci. Biotechnol. Biochem.
Country
Volume 76(7)
Pages 1296-302
Year 2012
PubMed ID 22785493
PubMed Central ID -
DOI -
URL -
Relation
Gene GLUP4 RGP1 RGP2 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
INSD -
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain
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Stages in Each Organ
- Muant Lines (Gene)
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Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
/rice/oryzabase