Comparação entre marcadores eric, box e vntrs visando estudos populacionais de Xathomonas phaseoli PV Manihotis, agente causal da bacteriose da mandioca

Abstract

Manihot esculenta Crantz species belongs to the Euphorbiabeae Family, which encompass plants with arboreal statue, shrubs or are herbaceous. Cassavas play an important role in the worldwide economy. However, like many other crops, it is affected by various biotic and abiotic factors. Among the biotic factors, cassava bacterial blight (CBB), caused by Xanthomonas phaseoli pv. manihotis (Xpm), is the main disease. Xpm infects all the aerial part of the plant, including leaves and stems at any stage of the development of the plant limiting production, where main control is by resistant cultivars. Increasing bacteriosis in Africa and Latin America has lead to great losses in cassava harvest. It is well known that resistance durability depends on factors such as host diversity as well as diversity and dynamics of populations of the pathogen. Hence, better comprehension of the mechanisms of Xpm pathogenicity at a molecular level as well as broader population studies are necessary. Therefore, the main objective of the present work was to evaluate the population structure of Xmp in main production areas using Rep-PCR – ERIC, BOX and VNTR markers for better disease management and sustainability of the cassava production sector.