Os11g0690066

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The rice Os11g0690066 was reported as OsWAK1 in 2009 [1] by researchers from China.

Annotated Information

Gene Symbol

Figure 3. Subcellular localization of OsWAK1 protein.[1].
  • Os11g0690066 <=> OsWAK1,WAK1

Function

  • OsWAK1 not only has the ability of autophosphorylation but also can phosphorylate OsRFP1, a putative transcription regulator recently identified in rice. OsRFP1 strongly interacts with the kinase domain of OsWAK1. This demonstrated that OsWAK1 is a functional protein kinase.
  • Plasmolysis experiments further revealed OsWAK1 is associated with the cell wall.
  • OsWAK1 is a novel gene involved in plant defense.

Phenotypic analysis

  • Six transgenic rice lines with constitutive expression of OsWAK1 became resistant to the compatible race. However, OsWAK1 expression was undetectable in leaves, stems and flowers but very weak in roots under normal growth conditions.
  • This provides functional evidence that induction of OsWAK1 as a novel RLK plays important roles in plant disease resistance.

Expression

  • Northern blotting analysis showed that infection of the rice blast fungus, Magnaporthe oryzae significantly induced the OsWAK1 transcripts, and the accumulation of OsWAK1 mRNA occurred earlier and was more abundant in rice leaves infected with an incompatible race than with a compatible race of the blast fungus.
  • OsWAK1 was also induced after treatment by mechanical wounding, SA and MeJA, but not by ABA.

Evolution

  • The deduced amino acid sequence of OsWAK1 showed 27.6% identity to WAK2 from Arabidopsis.

Subcellular localization

  • A fusion protein of OsWAK1 with GFP was found to be localized on the cell surface.

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Labs working on this gene

  • State Key Laboratory for Agrobiotechnology and the Ministry of Agriculture Key Laboratory for Plant Pathology, China Agricultural University, Beijing 100193, China

References

  1. 1.0 1.1 Li H, Zhou SY, Zhao WS, Su SC, Peng YL. A novel wall-associated receptor-like protein kinase gene, OsWAK1, plays important roles in rice blast disease resistance. Plant Mol Biol. 2009 Feb;69(3):337-46. doi: 10.1007/s11103-008-9430-5. PubMed PMID: 19039666.

Structured Information