Verticillium resistance is thought to be mediated by Ve1 protein, which presumably follows a "gene-for-gene" relationship with the V. dahliae Ave1 effector. Because in planta analyses of Ave1 have relied so far on transient expression of the gene in tobacco, this study investigated gene function using stably expressing 35S:Ave1 transgenic tomato. Transgenic Ave1 expression was shown to induce various defense genes including those coding for PR-1 (P6), PR-2 (βbeta-1,3-glucanase) and peroxidases (anionic peroxidase 2, Cevi16 peroxidase). Since a Ve1 tomato cultivar served as germplasm, these results indicate that Ave1 induces these defense genes independently of Ve1.
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http://dx.doi.org/10.1080/15592324.2016.1245254 | DOI Listing |
Plant Dis
July 2024
Department of Plant Pathology, University of California, Davis, c/o Sam Farr United States Crop Improvement and Protection Research Center, Salinas, CA 93905.
Verticillium wilt, caused by , is one of the most devastating soilborne diseases of lettuce ( L.). There are three races of , and each race has been characterized by markers representing race-specific effectors.
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May 2022
Universidade Estadual Paulista (UNESP), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, SP, Brazil. Electronic address:
Plant natriuretic peptide-like (PNP) are signaling molecules related to adaptive responses to stress. The Arabidopsis thaliana PNP (AtPNP-A) is capable of modulating catalase 2 (CAT2) and rubisco activase (RCA) activity in some circumstances. Interestingly, many plant-pathogens co-opted PNP-like molecules to their benefit.
View Article and Find Full Text PDFFront Microbiol
November 2020
Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC, United States.
Host resistance is one of the few strategies available to combat the soil borne pathogenic fungus Understanding pathogen diversity in populations is key to successfully deploying host resistance. In this study the genomes of 18 isolates of races 1 ( = 2), 2 ( = 4), and 3 ( = 12) from Japan, California, and North Carolina were sequenced and mapped to the reference genome of JR2 (from tomato). The genomes were analyzed for phylogenetic and pathogen specific signatures to classify specific strains or genes for future research.
View Article and Find Full Text PDFPlanta
June 2019
Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, N1G 2W1, Canada.
In tomato, Ve1 gene expression is induced specifically by physical damage or plant wounding, resulting in a defense/stress cascade that mimics responses during Verticillium colonization and wilt. In tomato, Verticillium resistance is determined by the Ve gene locus, which encodes two leucine-rich repeat-receptor-like proteins (Ve1, Ve2); the Ve1 gene is induced differentially while Ve2 is constitutively expressed throughout disease development. These profiles have been observed even during compatible Verticillium interactions, colonization by some bacterial pathogens, and growth of transgenic tomato plants expressing the fungal Ave1 effector, suggesting broader roles in disease and/or stress.
View Article and Find Full Text PDFPlant Dis
April 2019
1 Dipartimento di Scienze del Suolo, Università degli Studi di Bari - Aldo Moro, Bari, 70126 Bari, Italy.
Verticillium dahliae is widely distributed in potato and olive fields in Lebanon, causing serious economic losses. However, little is known about the inoculum source, population structure, and genetic diversity of the pathogen or the mechanisms of dissemination within Lebanon. To understand the population structure, a total of 203 isolates sampled from olive (n = 78) and potato (n = 125) were characterized for species, mating type, and race, and the genetic relationships were delineated using 13 microsatellite markers.
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