Coffee production in several countries is threatened by abiotic and biotic stresses, including diseases caused by phytopathogenic bacteria. It plays an important socioeconomic role contributing to employment and settlement of families in production areas. This review discusses the recent progress on the molecular mechanisms used by these bacteria to cause diseases on other plant species, in order to provide a guideline for the establishment of future research programmes.Ĭoffee ( Coffea spp.) is a very important commodity for a number of tropical countries in South America, Central America, Asia and Africa. Little effort has been made to understand the biology and molecular mechanisms underlying the interaction between Coffea spp. Early studies reported the identification of potential sources of resistance against Psgc and Psta, but, to date, no resistance gene has been isolated. Greater efforts should be made to understand the genetic and virulence diversity of Psgc, Psta and Pch populations. fastidiosa, a permanent revision of the detection methods is necessary. Because of the high rate of intra- and intersubspecific recombination occurring in X.
In all cases, there is an urgent need to develop rapid and more reliable methods for early detection of the pathogens in order to minimize their negative impact on coffee production. Little research progress has been made on aspects that are relevant for control and management of these diseases.
pauca (Xfp), respectively, cause significant reductions in coffee production, although other minor bacterial diseases have also been reported in some countries. tabaci (Psta), Pseudomonas cichorii (Pch) and Xylella fastidiosa subsp. The diseases bacterial halo blight (BHB), bacterial leaf spot (BLS), bacterial leaf blight (BLB) and coffee leaf scorch (CLS), caused by the bacterial pathogens Pseudomonas syringae pv. Coffee is a very important crop for several tropical countries across different continents.
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