Emerging Trends in Molecular Interactions between Plants and the Broad Host Range Fungal Pathogens Botrytis cinerea and Sclerotinia sclerotiorum

Fungal plant pathogens are major threats to food security worldwide. Sclerotinia sclerotiorum and Botrytis cinerea are closely related Ascomycete plant pathogens causing mold diseases on hundreds of plant species. There is no genetic source of complete plant resistance to these broad host range path...

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Published inFrontiers in plant science Vol. 7; p. 422
Main Authors Mbengue, Malick, Navaud, Olivier, Peyraud, Rémi, Barascud, Marielle, Badet, Thomas, Vincent, Rémy, Barbacci, Adelin, Raffaele, Sylvain
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers 31.03.2016
Frontiers Media S.A
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Summary:Fungal plant pathogens are major threats to food security worldwide. Sclerotinia sclerotiorum and Botrytis cinerea are closely related Ascomycete plant pathogens causing mold diseases on hundreds of plant species. There is no genetic source of complete plant resistance to these broad host range pathogens known to date. Instead, natural plant populations show a continuum of resistance levels controlled by multiple genes, a phenotype designated as quantitative disease resistance. Little is known about the molecular mechanisms controlling the interaction between plants and S. sclerotiorum and B. cinerea but significant advances were made on this topic in the last years. This minireview highlights a selection of nine themes that emerged in recent research reports on the molecular bases of plant-S. sclerotiorum and plant-B. cinerea interactions. On the fungal side, this includes progress on understanding the role of oxalic acid, on the study of fungal small secreted proteins. Next, we discuss the exchanges of small RNA between organisms and the control of cell death in plant and fungi during pathogenic interactions. Finally on the plant side, we highlight defense priming by mechanical signals, the characterization of plant Receptor-like proteins and the hormone abscisic acid in the response to B. cinerea and S. sclerotiorum, the role of plant general transcription machinery and plant small bioactive peptides. These represent nine trends we selected as remarkable in our understanding of fungal molecules causing disease and plant mechanisms associated with disease resistance to two devastating broad host range fungi.
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This article was submitted to Plant Biotic Interactions, a section of the journal Frontiers in Plant Science
Reviewed by: Kemal Kazan, Commonwealth Scientific and Industrial Research Organization, Australia; Yusuke Saijo, Nara Institute of Science and Technology, Japan
Edited by: Mark Findlay Belmonte, University of Manitoba, Canada
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2016.00422