Application of rice potassium ion transporter gene oshak9 in improving seed germination ability under salt stress

Abstract

The invention belongs to the field of seed science and technology, and discloses the application of rice potassium ion transporter gene OsHAK9 in improving seed germination ability under salt stress. The nucleotide sequence of the rice potassium ion transporter gene OsHAK9 is shown in SEQ ID NO.1, and the encoded amino acid sequence is shown in SEQ ID NO.2. In the present invention, the gene OsHAK9 is cloned from rice salt-sensitive mutant gss1 by MutMap method, and functional complementation experiments prove that OsHAK9 can improve the germination ability of rice seeds under salt stress. The gene can be applied to the breeding of high-vigorous seed rice varieties and the genetic improvement of rice seed germination traits under salt stress, and is of great significance to direct-seeding rice production.

Description

technical field

[0001] The invention belongs to the field of seed science and technology, and relates to the application of the rice potassium ion transporter gene OsHAK9 in improving the germination ability of rice seeds under salt stress, and is specially used for the breeding of rice varieties with high vigor seeds and the genetic improvement of rice seed germination traits under salt stress . Background technique

[0002] Rice (Oryza sativa L.) is an important food crop in my country, and about 30% of the rice arable land in the world is affected by salt damage. With the development of the economy, direct-seeding rice and machine-transplanted rice are becoming more and more common, and it is becoming increasingly important to improve the germination ability of rice seeds under salt stress conditions.

[0003] Seed germination is a complex quantitative trait controlled by multiple genes. In the past ten years, QTL analysis has been used to locate multiple QTLs related t...

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