Abstract: The invention belongs to the technical field of biotechnology and botany, relating to a method for modifying cell identity and regulating root nodule symbiosis, and specifically relating to the use of a new in-vivo plant mechanism formed on the basis of SHR-SCR in modifying the division potential of cortical cells. Also provided is a novel approach for identifying the traits of plants, thereby providing a feasible method for plant identification and an effective tool for plant breeding and screening.

Abstract: Provided is a method for regulating the symbiosis of gramineous plants and arbuscular mycorrhizal fungi or regulating the inhibitory effect of high phosphorus on mycorrhizal symbiosis, the method comprising: adjusting the expression or activity of the phosphorus starvation response factor PHR2 in gramineous plants. Also provided is the use of PHR2 or an encoding gene thereof in regulating the symbiosis of gramineous plants and arbuscular mycorrhizal fungi, regulating the inhibitory effect of high phosphorus on mycorrhizal symbiosis, and as a molecular marker for the identification of the symbiosis of gramineous plants and arbuscular mycorrhizal fungi. Also provided is a method for using PHR2 to screen for substances that regulate the symbiosis of gramineous plants and arbuscular mycorrhizal fungi or regulate the inhibitory effect of high phosphorus on mycorrhizal symbiosis. Also provided is a method for using PHR2 to identify mycorrhizal-associated genes regulated by PHR2 in mycorrhizal symbiosis.

Abstract: A novel crop grain filling gene (GIF1) and the applications thereof are presented in the invention. The GIF1 gene can be applied to control grain filling, enhance crop yield or quality, or improve disease resistance or storage stability of crop grains. A method for improving crops is also presented in the invention. The GIF1 gene shows valuable potentials in controlling crop yield, quality, storage, and resistance to diseases.

Abstract: A novel crop grain filling gene (GIF1) and the applications thereof are presented in the invention. The GIF1 gene can be applied to control grain filling, enhance crop yield or quality, or improve disease resistance or storage stability of crop grains. A method for improving crops is also presented in the invention. The GIF1 gene shows valuable potentials in controlling crop yield, quality, storage, and resistance to diseases.