| Categories genes  | Tags root  growth  shoot  seedling  salt  tolerance  abiotic stress  auxin  salt tolerance  salt stress  stress  architecture  biotic stress  auxin transport  lateral root  adventitious root  primary root  plant growth  root system architecture 
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  • Key message
    • Overexpression of RCc3 improves root system architecture and enhances salt tolerance in rice.
    • In this study, we investigated the biological role of the rice root-specific gene RCc3 in improving root growth and responses to abiotic stress by overexpressing RCc3 in rice plants
    • RCc3 overexpression produced pleiotropic phenotypes of improved root system architecture, including increased growth of primary root, adventitious roots and lateral roots at the seedling stage
    • Further study indicated that auxin accumulation in the root was increased through auxin local biosynthesis and polar auxin transport in RCc3 overexpression lines
    • Under osmotic and heat stress conditions, the root and shoot growth were less severely inhibited in RCc3 overexpressing transgenic plants than that in wild-type plants, and the transcript levels of abiotic stress-related genes were significantly increased
    • Taken together, the data showed that RCc3 overexpression can improve rice root system, promote plant growth, and enhance plant tolerance to salt stress
    • Moreover, overexpression of RCc3 remarkably enhanced the tolerance to salt stress, with the elevated activities of antioxidant enzymes
    • RCc3 was induced by osmotic and heat stress
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