Os07g0152900

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The rice Os07g0152900 was reported as OsGLO4 in 2013 [1] by researchers from China.

Annotated Information

Gene Symbol

Figure 1. Phenotypes of the GLO-suppressed transgenic plants.[1].
  • Os07g0152900 <=> OsGLO4,GLO4

Function

  • Glycolate oxidase (GLO) encoded by OsGLO4 is a key enzyme for photorespiration in plants.
  • suppression of GLO genes causes photosynthetic inhibition, and the accumulated glycolate with the deactivated Rubisco is likely involved in the regulation.

Phenotypic analysis

  • The researchers have generated the transgenic rice (Oryza sativa) plants with GLO being constitutively silenced, and conducted the physiological and biochemical analyses on these plants to explore the regulatory mechanism.
  • When GLO was downregulated, the net photosynthetic rate (Pn) was reduced and the plant growth was correspondingly stunted. Surprisingly, glyoxylate, as a product of the GLO catalysis, was accumulated in response to the GLO suppression, like its substrate glycolate.
  • Furthermore, the glyoxylate content was found to be inversely proportional to the Pn while the Pn is directly proportional to the Rubisco activation state in the GLO-suppressed plants.


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Labs working on this gene

  • State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, China
  • Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, China
  • Institute of Biotechnology, Cornell University, Ithaca, NY, USA

References

  1. ↑ 1.0 1.1 Lu Y, Li Y, Yang Q, Zhang Z, Chen Y, Zhang S, Peng XX. Suppression of glycolate oxidase causes glyoxylate accumulation that inhibits photosynthesis through deactivating Rubisco in rice. Physiol Plant. 2014 Mar;150(3):463-76. doi: 10.1111/ppl.12104. Epub 2013 Oct 12. PubMed PMID: 24102419

Structured Information