| Cotton Leaf Curl Virus： Ionic Status of Leaves and Symptom Development |
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| 作者姓名： | Naeem lqbal Muhammad Yasin Ashraf Farrukh Javed Muhammad Ashmf Sohail Hameed |
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| 作者单位： | [1]Department of Botany, University of Agriculture, Faisalabad, Pakistan [2]Nuclear Institute for Agriculture and Biology, Faisalabad, Pakistan [3]National Institute for Biotechnology and Genetic Engineering, Faisalabad, Pakistan |
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| 基金项目： | Publication of this paper is supported by the National Natural Science Foundation of China （30424813） and Science Publication Foundation of the Chinese Academy of Sciences. |
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| 摘 要： | In the present study, the relationship between the nutritional status of leaves and the development of symptoms of cotton leaf curl virus （CLCuV） in two cotton （Gossypium hirsutum L.） cuItlvars （I.e. CIM-240 and S-12） was Investigated. The incidence of disease attack was found to be 100% In the S-12 cuItlvar and 16% in the CIM-240 cuItivar. Geminivirus particles in infected leaves were confirmed by transmission electron microscope examination of highly specific geminivirus coat protein antlsera-treated cell sap. The CLCuV Impaired the accumulation of different nutrients in both cuItivars. A marked decrease in the accumulation of Ca^2＋ and K^＋ was observed in infected leaves. However, the disease had no effect on leaf concentrations of Na^＋, N, and P. It was observed that the curling of leaf margins in CLCuV-Infected plants was associated with the leaf Ca^2＋ content; leaf curling was severe in plants with a significant reduction In Ca^2＋ content. Moreover, leaf K＆＋ content was found to be associated with resistance/susceptibility to CLCuV infection.
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| 关 键 词： | 棉花 叶子 卷曲病毒 形状 |
| 收稿时间： | 2005-06-25 |
| 修稿时间： | 2005-06-252005-10-10 |
Cotton Leaf Curl Virus: Ionic Status of Leaves and Symptom Development |
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| Authors: | Naeem Iqbal Muhammad Yasin Ashraf Farrukh Javed Muhammad Ashraf Sohail Hameed |
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| Institution: | Department of Botany, University of Agriculture, Faisalabad, Pakistan;;Nuclear Institute for Agriculture and Biology, Faisalabad, Pakistan;;National Institute for Biotechnology and Genetic Engineering, Faisalabad, Pakistan |
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| Abstract: | In the present study, the relationship between the nutritional status of leaves and the development of symptoms of cotton leaf curl virus (CLCuV) in two cotton (Gossypium hirsutum L.) cultivars (i.e. CIM‐240 and S‐12) was investigated. The incidence of disease attack was found to be 100% in the S‐12 cultivar and 16% in the CIM‐240 cultivar. Geminivirus particles in infected leaves were confirmed by transmission electron microscope examination of highly specific geminivirus coat protein antisera‐treated cell sap. The CLCuV impaired the accumulation of different nutrients in both cultivars. A marked decrease in the accumulation of Ca2+ and K+ was observed in infected leaves. However, the disease had no effect on leaf concentrations of Na+, N, and P. It was observed that the curling of leaf margins in CLCuV‐infected plants was associated with the leaf Ca2+ content; leaf curling was severe in plants with a significant reduction in Ca2+ content. Moreover, leaf K+ content was found to be associated with resistance/susceptibility to CLCuV infection. (Managing editor: Ping He) |
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| Keywords: | geminiviruses Gossypium hirsutum leaf curling nutrient accumulation |
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