Os08g0557700

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The rice Os08g0557700 was reported as OsAHP1 in 2014 [1] by researchers from China.

Annotated Information

Figure 1. Phenotypes of OsAHP-RNAi transgenic plants.[1].

Gene Symbol

  • Os04g0459000 <=> OsAHP1,AHP1

Function

  • OsAHPs Play an Important Role in Plant Growth and Development.
  • OsAHPs Are Required for Cytokinin Responses.
  • OsAHP-RNAi Seedlings Are Tolerant to Osmotic Stress But Hypersensitive to Salt Stress
  • OsAHPs function as positive regulators of the cytokinin signaling pathway and play different roles in salt and drought tolerance in rice.

Phenotypic analysis

  • The reserachers obtained several independent transgenic OsAHP-RNAi lines and selected two of them (i10 and i11) showing representative phenotypes and severe reduction in the RNA levels of both OsAHP1 and OsAHP2 (Fig. 1A).
  • The OsAHP-RNAi plants showed pleiotropic phenotypes during growth and development. They were shorter than the wild type at the seedling and mature stages (Fig. 1, B and C) and exhibited a reduction in the length of each internode (Fig. 1, D and E).
  • In addition, early leaf senescence was observed in the OsAHP-RNAi lines from the seedling stage to the heading stage (Fig. 1, B and C), as indicated by a reduced chlorophyll content compared with wild-type plants (Fig. 1F). The tiller number in the OsAHP-RNAi plants was also reduced to nearly one-half that in wild-type plants (Fig. 1G), and the seed setting rate was also reduced (Fig. 1, H and I).
  • These phenotypes indicate an important role for OsAHPs in plant growth and development.

Evolution

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Labs working on this gene

  • Hebei Key Laboratory of Molecular and Cellular Biology, Shijiazhuang 050024, China
  • Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Shijiazhuang 050024, China
  • Hebei Collaboration Center for Cell Signaling, Shijiazhuang 050024, China
  • Hebei Normal University, Shijiazhuang 050024, China
  • Biotechnology Research Institute, Chinese Academy of Agricultural Sciences/National Key Facility for Gene Resources and Genetic Improvement, Beijing 100081, China

References

  1. 1.0 1.1 Sun L, Zhang Q, Wu J, Zhang L, Jiao X, Zhang S, Zhang Z, Sun D, Lu T, Sun Y. Two rice authentic histidine phosphotransfer proteins, OsAHP1 and OsAHP2, mediate cytokinin signaling and stress responses in rice. Plant Physiol. 2014 May;165(1):335-45. doi: 10.1104/pp.113.232629. Epub 2014 Feb 27. PubMed PMID: 24578505; PubMed Central PMCID: PMC4012592.


Structured Information