야생벼 Oryza minuta에서 유래한 수원506호의 흰잎마름병 저항성유전자에 대한 고찰

• 영문명: Genetic Analysis on the Bacterial Blight Resistance Gene from a Wild Relative, Oryza minuta
• 발행기관: 한국작물학회
• 저자명: 정지웅(Ji Ung Jeung) 노태환(Tae Hwan Roh) 강경호(Kyung Ho Kang) 신영섭(Young Seop Shin) 김연규(Yeon Gyu Kim)
• 간행물 정보: 『한국작물학회지』제56권 제2호, 124~133쪽, 전체 10쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2011.06.30

영문 초록

Bacterial blight (BB), cuased by the vascular pathogen Xanthomonas oryzae pv. oryzae, is one of the major threats in rice fields worldwide. In Korea, two resistance genes against BB, Xa1 and Xa3 had been intensively used for developing high quality japonica rice cultivars. Those traditional resistance sources have being rapidly nullified by the adopting of BB pathogen through mutations of the corresponding avr-genes, such as K3a exhibiting high compatibility to both Xa1 and Xa3. To expanding genetic resource against BB in Korea, the Suweon506, an introgression line between a Korean japonica cultivar, Hwaseong and a wild relative, Oryza minuta, was be subjected for genetic analysis owing to the BB resistance. Through association analyses between the pathotyping and genotyping results for each F2 progenies, derived from a cross between Suweon506 and a Tongil type cultivar, Milyang23, a major resistant dominant gene is localized on the subterminal region of rice chromosome 4, where at least three BB resistancde genes, Xa1, Xa2, and Xa22, were reported previously.

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키워드

rice bacterial blight resistance wild rice intro-gression line