Two new species of the Fusarium fujikuroi species complex isolated from the natural environment

Tarek A A Moussa,G Sybren De Hoog,Hassan S Al-Zahrani,Naif M S Kadasa,Abdullah M S Al-Hatmi,Sarah A Ahmed

doi:10.1007/s10482-017-0855-1

Abstract

Two new species in the Fusarium fujikuroi species complex (FFSC) are introduced. One of these, represented by strain CBS 454.97 was isolated from plant debris (Striga hermonthica) in the Sudan, while the second, represented by strains CBS 119850 and CBS 483.94, which originated from soil in Australia. Molecular analyses were performed including TEF1 spanning 576 bp region, 860 bp region of rPB2, and 500 bp BT2 region. Phylogenetic trees based on these regions showed that the two species are clearly distinct from all known taxa in the F. fujikuroi species complex. Based on phenotypic, physiological characters and molecular data, we introduce Fusarium sudanense and Fusarium terricola as novel species in the complex.

Highlights

Fusarium is a large and variable genus with nearly 300 recognized species occurring worldwide in a diversity of habitats
The resultant data show that some isolates represent two new Fusarium species, for which we propose the names Fusarium terricola for a species isolated from Australia and Fusarium sudanense that was isolated in Sudan
Using the BLAST similarity search, the typing: elongation factor 1 alpha (TEF1) region of the strain CBS 454.97 showed 99% (546/547 bp) similarity to F. andiyazi strain F16 (JX307409.1) which appears to be wrongly labeled in GenBank

Summary

Introduction

Fusarium is a large and variable genus with nearly 300 recognized species occurring worldwide in a diversity of habitats. In plant pathology, species have extensively been studied because of their opportunism on numerous hosts, among which are economically important crops. Many formae speciales have been reported in F. oxysporum and relatives (Ordonez et al 2015) as etiologic agents of plant diseases. Some species seem to have a narrow host range or may even be host-specific, such as. Kadasa Biological Sciences Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia

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Conclusion