Host Adaptation and Virulence in Heteroecious Rust Fungi

Author:

Duplessis Sebastien1,Lorrain Cecile2,Petre Benjamin1,Figueroa Melania3,Dodds Peter N.3,Aime M. Catherine4

Affiliation:

1. Université de Lorraine, INRAE, UMR 1136 IAM, Interactions Arbres-Microorganismes, 54000 Nancy, France;,

2. Plant Pathology Group, ETH Zurich, 8092 Zurich, Switzerland;

3. Agriculture and Food, Commonwealth Scientific and Industrial Research Organisation, Canberra, ACT 2601, Australia;,

4. Department of Botany and Plant Pathology, Purdue University, West Lafayette, Indiana 47907, USA;

Abstract

Rust fungi (Pucciniales, Basidiomycota) are obligate biotrophic pathogens that cause rust diseases in plants, inflicting severe damage to agricultural crops. Pucciniales possess the most complex life cycles known in fungi. These include an alternation of generations, the development of up to five different sporulating stages, and, for many species, the requirement of infecting two unrelated host plants during different parts of their life cycle, termed heteroecism. These fungi have been extensively studied in the past century through microscopy and inoculation studies, providing precise descriptions of their infection processes, although the molecular mechanisms underlying their unique biology are poorly understood. In this review, we cover recent genomic and life cycle transcriptomic studies in several heteroecious rust species, which provide insights into the genetic tool kits associated with host adaptation and virulence, opening new avenues for unraveling their unique evolution.

Publisher

Annual Reviews

Subject

Plant Science

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