Sagheer Atta, Maroof Siddiq, Sidra Ashiq, Abdul Hannan


Citrus is one of the most widely grown fruit crop in the world. Citrus tristeza virus (CTV) is one of the most economically important viral pathogen of citrus and causes different disease syndromes. The use of infected bud wood and aphids are the main cause of spread of CTV. The virus is genetically diverse and causes various symptoms like slow and quick decline, stunting, stem pitting, vein clearing and seedling yellows. Strategies have been developed to reduce the economic losses caused by CTV. Quarantine measures, bud wood certification, mild strain cross protection and eradication programs are some of the strategies that can prevent the spread of this disease. New approaches are provided by advancement in genetic engineering and molecular biology. Transgenic plants have been developed to provide resistance against the disease. 


Citrus tristeza virus isolates; infected bud wood; aphids; stem-pitting; Mild Strain Cross Protection

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