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Polymerase Chain Reaction Detection Of Candidatus Liberibacter Asiatic Associated With Citrus Huanglonbing | 4638
ISSN: 2155-952X

Journal of Biotechnology & Biomaterials
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Polymerase chain reaction detection of Candidatus liberibacter asiatic associated with citrus huanglonbing

3rd World Congress on Biotechnology

G.P. Jagtap and Utpal Dey

Posters: Agrotechnol

DOI: 10.4172/2155-952X.S1.020

Citrus is one of the most important tropical fruit crops of the world. Citriculture is the largest fruit industry in India which occupies important place in economy of the country. Diseases are known as one of the important factors in low productivity of citrus fruits in India. Among the diseases of citrus, viral diseases cause heavy economic losses in varying proportion. Around 30 viral diseases are known to infect citrus worldwide. In India, the major pathogens of economic importance in citrus are Citrus tristeza (CTV), Citrus yellow mosaic badna virus (CYMV), Indian citrus ring spot virus (ICRSV), viroids disease like citrus exocortis viroid and a fastidious prokaryote causing citrus greening disease. Detection by DNA probes though an accurate method for detection but requires handling of radioactive elements and is being discouraged now a days. Moreover, these are not practically feasible methods for handling a large sampling unit. Polymerase chain reaction diagnosis of Candidatus liberibacter asiatic associated with citrus Huanglonbing disease is molecular technique which is used for detection of disease when pathogen present is very low concentration in disease sample. Among these three DNA isolation methods viz., commercial kit method, sodium sulphite method and membrane bard nucleic acid technique, sodium sulphite method is cost effective for commercial use. In nucleic acid membrane method for DNA extraction isolation there is no use of liquid nitrogen. Polymerase chain reaction detection of disease is based on principal of thermal cycling in which PCR instrument allow to run generally 60-65 thermal cycle, during PCR operation it allow different stages of cycle at different temperatures for different period of time i.e. initiation (94 0 C), denaturation (94 0 C), primer annealing (60 0 C), extension/elongation step (72 0 C), final elongation (72 0 C) and holding temperature (4 0 C). PCR based diagnosis system is developed for detection of greening bacteria. The comparative cost of detection by various combinations of reagent and sampling time was determined and cost effective technology was standardized and validated.
G.P.Jagtap M.Sc. (Agri), Ph.D NET (ICAR) is Norman Borlaug Fellow 2008 (USA). He is a recipient of Norman Borlaug International Fellowship - 2008 and worked at Plant Disease Diagnostic Laboratory, Texas; A&M University, USA. He did his doctorate degree from GBPUA&T, Pantnagar with specialization in Plant Pathology and presently working as a Assistant Professor in the Department of Plant Pathology, MKV, Parbhani. He has published 20 research papers, 40 popular articles, 2 Books and 6 practical manuals. He has participated in several International and National conferences and guided 10 M.Sc. (Agri) students. He has 11 years experience in Teaching, Research and Extension work.