“CATAStrophy,” a Genome-Informed Trophic Classification of Filamentous Plant Pathogens – How Many Different Types of Filamentous Plant Pathogens Are There?

Frontiers in Microbiology

Darcy A. B. Jones¹  Richard P. Oliver¹  James K. Hane²  Jonathan Paxman³  Pierre de Wit⁴ 

[1] Centre for Crop and Disease Management, School of Molecular and Life Sciences, Curtin University, Perth, WA, Australia;Curtin Institute for Computation, Faculty of Science and Engineering, Curtin University, Perth, WA, Australia;Department of Mechanical Engineering, Curtin University, Perth, WA, Australia;;Laboratory of Phytopathology, Department of Plant Sciences, Wageningen University &

关键词: fungi;    plant pathogen;    biotroph;    necrotroph;    hemibiotroph;    CAZymes;   

DOI  :  10.3389/fmicb.2019.03088

来源: DOAJ

【 摘 要 】

The traditional classification of fungal and oomycete phytopathogens into three classes – biotrophs, hemibiotrophs, or necrotrophs – is unsustainable. This study highlights multiple phytopathogen species for which these labels have been inappropriately applied. We propose a novel and reproducible classification based solely on genome-derived analysis of carbohydrate-active enzyme (CAZyme) gene content called CAZyme-Assisted Training And Sorting of -trophy (CATAStrophy). CATAStrophy defines four major divisions for species associated with living plants. These are monomertrophs (Mo) (corresponding to biotrophs), polymertrophs (P) (corresponding to necrotrophs), mesotrophs (Me) (corresponding to hemibiotrophs), and vasculartrophs (including species commonly described as wilts, rots, or anthracnoses). The Mo class encompasses symbiont, haustorial, and non-haustorial species. Me are divided into the subclasses intracellular and extracellular Me, and the P into broad and narrow host sub-classes. This gives a total of seven discrete plant-pathogenic classes. The classification provides insight into the properties of these species and offers a facile route to develop control measures for newly recognized diseases. Software for CATAStrophy is available online at https://github.com/ccdmb/catastrophy. We present the CATAStrophy method for the prediction of trophic phenotypes based on CAZyme gene content, as a complementary method to the traditional tripartite “biotroph–hemibiotroph–necrotroph” classifications that may encourage renewed investigation and revision within the fungal biology community.

【 授权许可】

Unknown