Os02g0649300

The rice Os02g0649300 was reported as OsEXPA3 in 2014 by researchers from China.

Annotated Information

Gene Symbol

• Os02g0649300 <=> OsEXPA3

Function

• OsEXPA3 is required for root system development in rice and involved in mediating root growth by mediating cell-wall loosening
• OsEXPA3 is a critical root expansin gene that is intrinsically involved in root system architecture adapted to some abiotic stresses.
• Modification of cell-wall compositions mediated by OsEXPA3 repression changed the wall mechanical properties, which elucidated the cell loosening process both biochemically and mechanically.

Expression

• Semiquantitative-PCR analysis demonstrated that OsEXPA3 expressed preferentially in the root of 1-wk- old seedlings.
• Expressing preferentially in the root throughout the whole developmental stages, OsEXPA3 displayed the expression peak in 1-wk-old seedlings but decreased drastically at the tillering stage, and the expression diminution continued with the passage of growth time.
• As to abiotic stresses and nutrient deficiency, OsEXPA3 expression in the root was significantly upregulated by NaCl stress, while repressed by N and Pi deficiency. The result implies an intrinsic function of OsEXPA3 in regulation of the root system architecture in response to abiotic stresses.

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Labs working on this gene

• Key Lab. of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing Univ., Chongqing, 400030, P. R. China.