Os10g0402200

The rice Os10g0402200 was reported as OsORC3 in 2014 by researchers from China.

Annotated Information

Figure 1. Phenotypic characterization of the orc3 mutant..

Gene Symbol

• Os10g0402200 <=> OsORC3,ORC3

Function

• OsORC3 plays a crucial role in the emergence of lateral root primordia

Phenotypic analysis

• When grown in hydroponic solution for 7 days at 34°C, the orc3 mutant showed normal primary root growth, but, in contrast to the wild-type (WT), lacked LRs (Figure 1a–e). Interestingly, LR development in the orc3 mutant was sensitive to temperature.
• Below 26°C, plant growth and LR development were similar in the mutant and WT (Figure 1g–j); however, no LRs were visible at temperatures above 34°C, and LR number was reduced with increasing temperature when the temperature was increased from 26 to 34°C.
• Additionally, orc3 showed a significant reduction in plant stature and seed setting when grown on soil at 34°C/26°C (12 h day/12 h night) (Figure 1f,j–l).
• However, the anthers and stigma developed normally, and pollen viability was not significantly different in the orc3 mutant compared with the WT at both 34°C/26°C and 30°C/22°C.

Expression

• OsORC3 was strongly expressed in regions of active cell proliferation, including the primary root tip, stem base, lateral root primordium, emerged lateral root primordium, lateral root tip, young shoot, anther and ovary.

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Labs working on this gene

• The State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, 310058 Hangzhou, China