A number of rice resistance genes, called Xa genes, have been identified that confer resistance against various strains of Xanthomonas oryzae pv. oryzae (Xoo), the causal agent of bacterial blight. An understanding of pathotype diversity within the target pathogen population is required for identifying the Xa genes that are to be deployed for development of resistant rice cultivars. Among 1024 ...

The acquisition by parasites of the capacity to infect resistant host genotypes, that is, resistance-breaking, is predicted to be hindered by across-host fitness trade-offs. All analyses of costs of resistance-breaking in plant viruses have focused on within-host multiplication without considering other fitness components, which may limit understanding of virus evolution. We have reported that ...

Cucurbit downy mildew (Pseudoperonospora cubensis) is characterized by large variation in pathogenicity, specificity and host-parasite interactions. This report reviews the current state of understanding regarding interactions between P. cubensis and Cucurbitaceae, the genetic control of host reactions, and overall variation within the pathogen. A well-characterized set of differential Cucurbit...

Phytophthora cactorum has two distinct pathotypes that cause crown rot and leather in strawberry ( Fragaria × ananassa ). Strains of the pathotype can infect both rhizome (crown) fruit tissues, while strains only fruits strawberry. The genome a highly virulent strain, low three were sequenced using PacBio high fidelity (HiFi) long read sequencing. reads de novo assembled to 66.4–67.6 megabases ...

Diarrheagenic Escherichia coli (DEC), an important agent of infectious diarrhea, is constantly evolving, making its periodic monitoring necessary. However, the DEC genotypes in Ghana remain uncharacterized. We focused on characterizing molecular serotypes, virulence factors, multilocus sequence types, and phylogenetic relatedness among different pathotypes recovered from stool samples pediatric...

Sixty-seven isolates of bacterial spot pathogen (Xanthomonas spp.) collected from six provinces of Korea were tested for the identification of their pathotypes and determination of their distribution throughout Korea in an effort to genetically manage the disease. Near isogenic lines of Early Calwonder (Capsicum annuum) pepper plants carrying Bs1 , Bs2 and Bs3 , and PI235047 (C. pubescens) were...

Since the first step of the infection process is colonization of the host, it is important to understand how Escherichia coli pathogens successfully colonize the intestine. We previously showed that enterohemorrhagic O157:H7 strain E. coli EDL933 colonizes a niche in the streptomycin-treated mouse intestine that is distinct from that of human commensal strains, which explains how E. coli EDL933...