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Position: Home > Articles > Characteristics of Resistance to Rice Sheath Blight of Zhongda 2, a Transgenic Rice Line as Modified by Gene 'RC24' Rice Science 2004,11 (4) 177-180

Characteristics of Resistance to Rice Sheath Blight of Zhongda 2, a Transgenic Rice Line as Modified by Gene 'RC24'

作  者:
YUAN Hong-xu;Xu Xin-ping;ZHANG Jian-zhong;Guo Jian-fu;LI Bao-jian
单  位:
Zhanjiang 524088;College of Agriculture; Zhanjiang Ocean University; China
关键词:
transgenic rice;chitinase gene;rice sheath blight;resistance
摘  要:
The transgenic rice, Zhongda 2, which was genetically modified from an indica rice line Zhuxian B by rice chitinase gene (RC24), had high resistance to rice sheath blight (Rhizoctonia solani) in laboratory and a two-year field experiment. The pathogen could invade sheath of Zhongda 2 and induce symptoms of the disease. No difference was noted in time of penetration or incubation period between Zhongda 2 and non-transgenic rice control, Zhuxian B, but the hyphae lysate could be observed earlier than control. Its resistance expressed as to inhibit the growth of mycelium in host tissue. F_1s from Zhongda 2(♂ ) crossed with other five non-transgenic rice lines showed higher resistance than donor non-transgenic parents, but the resistance was different along with the different maternal parents.

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