Plants and Pathogens Physiology and Biochemistry of Plant-Pathogen Interactions I. J. Misaghi Host-Pathogen Interactions in Plant Disease J. E. Vanderplank

BioScience ◽  
1984 ◽  
Vol 34 (3) ◽  
pp. 191-191
Author(s):  
Michele C. Heath
Keyword(s):  
Plant Pathogen ◽  
Plant Disease ◽  
Host Pathogen Interactions ◽  
Physiology And Biochemistry ◽  
Host Pathogen ◽  
Plant Pathogen Interactions

scholarly journals How to Unravel the Key Functions of Cryptic Oomycete Elicitin Proteins and Their Role in Plant Disease

Plants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1201
Author(s):  
Aayushree Kharel ◽  
Md Tohidul Islam ◽  
James Rookes ◽  
David Cahill
Keyword(s):  
Gene Editing ◽  
Plant Disease ◽  
Plant Cells ◽  
Defense Responses ◽  
Plant Defense Responses ◽  
Host Pathogen Interactions ◽  
Binding Ability ◽  
Host Pathogen ◽  
Pathogen Colonization

Pathogens and plants are in a constant battle with one another, the result of which is either the restriction of pathogen growth via constitutive or induced plant defense responses or the pathogen colonization of plant cells and tissues that cause disease. Elicitins are a group of highly conserved proteins produced by certain oomycete species, and their sterol binding ability is recognized as an important feature in sterol–auxotrophic oomycetes. Elicitins also orchestrate other aspects of the interactions of oomycetes with their plant hosts. The function of elicitins as avirulence or virulence factors is controversial and is dependent on the host species, and despite several decades of research, the function of these proteins remains elusive. We summarize here our current understanding of elicitins as either defense-promoting or defense-suppressing agents and propose that more recent approaches such as the use of ‘omics’ and gene editing can be used to unravel the role of elicitins in host–pathogen interactions. A better understanding of the role of elicitins is required and deciphering their role in host–pathogen interactions will expand the strategies that can be adopted to improve disease resistance and reduce crop losses.

scholarly journals Combining Digital Imaging and Genome Wide Association Mapping to Dissect Uncharacterized Traits in Plant/Pathogen Interactions

2018 ◽  
Author(s):  
Rachel F. Fordyce ◽  
Nicole E. Soltis ◽  
Celine Caseys ◽  
Raoni Gwinner ◽  
Jason A. Corwin ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Botrytis Cinerea ◽  
Plant Pathogen ◽  
Digital Imaging ◽  
Plant Disease Resistance ◽  
Plant Disease ◽  
Lesion Size ◽  
Genome Wide Association ◽  
Genome Wide ◽  
Plant Pathogen Interactions

AbstractPlant resistance to generalist pathogens with broad host ranges, such as Botrytis cinerea, is typically quantitative and highly polygenic. Recent studies have begun to elucidate the molecular genetic basis underpinning plant-pathogen interactions using commonly measured traits including lesion size and/or pathogen biomass. Yet with the advent of digital imaging and phenomics, there are a large number of additional resistance traits available to study quantitative resistance. In this study, we used high-throughput digital imaging analysis to investigate previously uncharacterized visual traits of plant-pathogen interactions related disease resistance using the Arabidopsis thaliana/Botrytis cinerea pathosystem. Using a large collection of 75 visual traits collected from every lesion, we focused on lesion color, lesion shape, and lesion size, to test how these aspects of the interaction are genetically related. Using genome wide association (GWA) mapping in A. thaliana, we show that lesion color and shape are genetically separable traits associated with plant-disease resistance. Using defined mutants in 23 candidate genes from the GWA mapping, we could identify and show that novel loci associated with each different plant-pathogen interaction trait, which expands our understanding of the functional mechanisms driving plant disease resistance.SummaryDigital imaging allows the identification of genes controlling novel lesion traits.

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