Os07g0152900

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

Annotated Information

Gene Symbol

Figure 1. Phenotypes of the GLO-suppressed transgenic plants..

• 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

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