| Characteristics of Resistance to Rice Sheath Blight of Zhongda 2, a Transgenic Rice Line as Modified by Gene “RC24” |
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| 作者姓名： | YUANHong-xu XuXin-ping ZHANGJian-zhong GuoJian-fu LIBao-jian |
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| 作者单位： | College of Agriculture，Zhanjiang Ocean University，Zhanjiang 524088，China; Biotechnology Research Center，Zhongshan University，Guangzhou 510275，China |
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| 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 solan!) 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. Fis from Zhongda 2(4) 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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| 关 键 词： | 水稻 纹枯病 抗病性 基因转化 几丁质酶基因 Zhongda 2品种 |
Characteristics of Resistance to Rice Sheath Blight of Zhongda 2, a Transgenic Rice Line as Modified by Gene "RC24" |
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| YUANHong-xu XuXin-ping ZHANGJian-zhong GuoJian-fu LIBao-jian.Characteristics of Resistance to Rice Sheath Blight of Zhongda 2, a Transgenic Rice Line as Modified by Gene "RC24"[J].Rice science,2004,11(4):177-180. |
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| Authors: | YUAN Hong-xu Xu Xin-ping ZHANG Jian-zhong Guo Jian-fu Li Bao-jian |
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| Abstract: | 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 solan!) 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. Fis from Zhongda 2(4) 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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| Keywords: | transgenic rice chitinase gene rice sheath blight resistance |
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