Rice bacterial leaf blight resistance related gene OsABA2 and application thereof

A technology related to rice bacterial blight and resistance, which is applied in the field of rice genetic engineering, can solve the problems of reports on the resistance to bacterial blight of the OsABA2 gene, and achieve enhanced rice bacterial blight resistance and identification. and a selection of simple, easy-to-apply effects
CN107475210AActive Publication Date: 2017-12-15SICHUAN AGRI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SICHUAN AGRI UNIV
Publication Date
2017-12-15

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Abstract

The invention discloses a rice bacterial leaf blight resistance related gene OsABA2 which consists of nucleotide sequences of SEQ ID No.2 as shown in the specification. The invention further discloses a rice lesion mimic gene which is capable of remarkably improving the resistance of rice to bacterial leaf blight, and a lesion mimic mutant can be acquired through gene edition on the OsABA2 gene. Novel functions of the OsABA2 gene are discovered, and the lesion mimic mutant acquired after the OsABA2 gene is knocked off through gene edition can be applied to rice bacterial leaf blight resistance breeding; meanwhile, the lesion mimic trait is controlled by a single recessive nuclear gene, and hybrid identification and selection can be relatively simple to implement in transgenosis or crossbreeding; and in addition, the lesion mimic gene is derived from nonglutinous rice and has a great promotion function on bacterial leaf blight resistant breeding of the nonglutinous rice.
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Description

technical field

[0001] The invention belongs to the field of rice genetic engineering, in particular to a rice bacterial blight resistance-related gene OsABA2, and also relates to the use of the gene in regulating rice bacterial blight resistance. Background technique

[0002] Rice bacterial blight is a bacterial disease caused by Xanthomonas oryzaepv. oryzae. The main symptoms are yellow-green spots on the leaf tips and edges, which develop into pale and yellow-brown long stripes along the veins, and finally turn grayish white and die. The disease can reduce the yield of rice by 20% to 30%, or 50% to 60% in severe cases, or even fail to harvest. It belongs to one of the three major diseases of rice. Generally, indica rice is heavier than japonica glutinous rice, and late rice is heavier than early rice. Therefore, rice bacterial blight is an urgent problem to be solved in rice production.

[0003] Breeding disease-resistant varieties is the most economical and effective m...

Claims

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