scholarly journals Sources of resistance in Musa to Xanthomonas campestris pv. musacearum , the causal agent of banana xanthomonas wilt

2018 ◽  
Vol 68 (1) ◽  
pp. 49-59 ◽  
Author(s):  
G. V. Nakato ◽  
P. Christelová ◽  
E. Were ◽  
M. Nyine ◽  
T. A. Coutinho ◽  
...  
Keyword(s):  
Xanthomonas Campestris ◽  
Causal Agent ◽  
Sources Of Resistance ◽  
Banana Xanthomonas Wilt

scholarly journals A Polymerase Chain Reaction Assay for the Detection of Xanthomonas campestris pv. musacearum in Banana

Plant Disease ◽  
2010 ◽  
Vol 94 (1) ◽  
pp. 109-114 ◽  
Author(s):  
Melanie L. Lewis Ivey ◽  
Geoffrey Tusiime ◽  
Sally A. Miller
Keyword(s):  
Polymerase Chain Reaction ◽  
Xanthomonas Campestris ◽  
Pcr Primers ◽  
Infected Tissue ◽  
Conventional Pcr ◽  
Enterobacterial Repetitive Intergenic Consensus ◽  
Chain Reaction ◽  
Whole Cells ◽  
Polymerase Chain ◽  
Banana Xanthomonas Wilt

Polymerase chain reaction (PCR) primers (BXW-1 and BXW-3) for conventional PCR were developed from conserved sequences in the hrpB operon of the hrp gene cluster from Xanthomonas campestris pv. musacearum, the causative agent of banana Xanthomonas wilt (BXW). All 50 strains of X. campestris pv. musacearum, isolated from Uganda, Rwanda, and Tanzania, produced a 214-bp amplicon when whole cells, bacterial ooze from infected tissue, and genomic DNA purified from bacterial ooze or infected tissue were used as template. The BXW primers also detected strains of X. axonopodis pv. vasculorum isolated from sugarcane and maize and strains of X. vasicola pv. holcicola isolated from sorghum. All of the strains of X. campestris pv. musacearum were clonal when compared using enterobacterial repetitive intergenic consensus PCR.

Field dispersal of Pseudomonas syringae pv. tomato, Xanthomonas campestris pv. vesicatoria, and Alternaria macrospora by animals, people, birds, insects, mites, agricultural tools, aircraft, soil particles, and water sources

1986 ◽  
Vol 64 (2) ◽  
pp. 276-281 ◽  
Author(s):  
Yoav Bashan
Keyword(s):  
Pseudomonas Syringae ◽  
Contaminated Soil ◽  
Xanthomonas Campestris ◽  
Water Sources ◽  
Causal Agent ◽  
Crop Cultivation ◽  
Soil Particles ◽  
Alternaria Blight ◽  
Infested Field

Viable disseminating units of Pseudomonas syringae pv. tomato (Okabe) Young, Dye and Wilkie and Xanthomonas campestris pv. vesicatoria (Doidge) Dye, the bacterial leaf pathogens of tomato and pepper, respectively, and Alternaria macrospora Zimm, the causal agent of Alternaria blight in cotton, were found to be carried by a wide variety of agents including animals, people, insects, mites, agricultural tools, aircraft, soil particles, and water sources. Of these, specific insects and tools commonly used for crop cultivation were the most heavily contaminated. Soil adhering to agricultural tools or carried by various water sources can also serve as a disseminating agent. It was concluded that nearly all accidental agents passing through the infested field may act as vectors of these pathogens.

scholarly journals Field Reaction of Landrace Components of Red Mottled Beans to Common Bacterial Blight

HortScience ◽  
1992 ◽  
Vol 27 (1) ◽  
pp. 50-51 ◽  
Author(s):  
James S. Beaver ◽  
James R. Steadman ◽  
Dermot P. Coyne
Keyword(s):  
Puerto Rico ◽  
Phaseolus Vulgaris ◽  
Bacterial Blight ◽  
Xanthomonas Campestris ◽  
Field Experiments ◽  
Common Bacterial Blight ◽  
Sources Of Resistance ◽  
Growing Seasons ◽  
Field Reaction ◽  
The Mean

Field reaction of 25 red mottled bean (Phaseolus vulgaris L.) genotypes to common bacterial blight [Xanthomonas campestris pv. phaseoli (Smith) Dye] was evaluated in Puerto Rico over 2 years. The average disease severity (percent leaf area with symptoms) was similar over years. The determinate red mottled genotypes had almost twice as much disease as indeterminate genotypes. Eight of the indeterminate genotypes had significantly less disease than the mean of the field experiments. These genotypes may serve as useful sources of resistance to common bacterial blight. The size of the chlorotic zone around necrotic lesions varied between growing seasons, showing that environment can influence the expression of common bacterial blight symptoms.

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