Rice yellow-green leaf mutation gene YGL8, protein coded by rice yellow-green leaf mutation gene YGL8, and application of rice yellow-green leaf mutation gene YGL8

Abstract

The invention discloses a rice yellow-green leaf mutation gene YGL8, protein coded by the rice yellow-green leaf mutation gene YGL8, and application of the rice yellow-green leaf mutation gene YGL8. The nucleotide sequence of the rice yellow-green leaf mutation gene YGL8 is shown in SEQ ID No.11, and the amino acid sequence of the rice yellow-green leaf mutation gene YGL8 is shown in SEQ ID No.12. Compared with the wild type, according to the rice yellow-green leaf mutation gene YGL8, the base at the 671st position of an encoding frame is converted into T from C, and therefore the coding amino acid at the 224th position is varied to valine (Val) from alanine (Ala), by means of the rice YGL8 mutant obtained through gene mutation, all leaves are in the yellow green color during the whole growth period, it is found through genetic analysis that the character is the recessive character, field purification and seed purity authentication can be conducted with the character serving as the molecular marker, and important significance in genetics and breeding of rice is achieved.

Description

technical field [0001] The invention belongs to the field of genetics, and specifically relates to a rice yellow-green leaf mutation gene YGL8, and also relates to a protein encoded by the gene and its application. Background technique [0002] Rice (Orvza sativa L.) is the most important food crop in the world and is widely planted in 120 countries and regions. More than half of the world's population uses rice as a staple food. my country has successfully bred hybrid rice and promoted and applied it. The increased grain production has created conditions for some countries to achieve food self-sufficiency, and has made outstanding contributions to the food security of the country and the world. However, the hybrid seeds mixed due to the unstable fertility of sterile lines seriously affect the purity of hybrids and the production of hybrid rice, and even cause serious losses to farmers, restricting hybrid rice from playing a greater role. In the breeding and production prac...

AI Technical Summary

Problems solved by technology

However, due to the poor traits of most seedling markers and the decline in photosynthetic efficiency, the plant growth and development are not normal and the yield is reduced, so its application in breeding practice is limited.

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