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Phylogenetically Diverse Fusarium Species Associated with Sorghum (Sorghum Bicolor L. Moench) and Finger Millet (Eleusine Coracana L. Garten) Grains from Ethiopia

1
College of Agriculture, Hawassa University, P.O. Box 05, Hawassa 1000, Ethiopia
2
International Crops Research Institute for the Semi-Arid Tropics, P.O. Box 5689, Addis Ababa 1000, Ethiopia
3
Department of Plant Sciences, Norwegian University of Life Sciences, P.O. Box 5003, Ås NO-1432, Norway
4
Division of Biotechnology and Plant Health, Norwegian Institute of Bioeconomy Research (NIBIO), Høgskoleveien 7, Ås N-1432, Norway
*
Author to whom correspondence should be addressed.
Diversity 2019, 11(6), 93; https://doi.org/10.3390/d11060093
Received: 15 May 2019 / Revised: 12 June 2019 / Accepted: 13 June 2019 / Published: 15 June 2019
(This article belongs to the Section Microbial Diversity)
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Abstract

Fusarium is one of the most diverse fungal genera affecting several crops around the world. This study describes the phylogeny of Fusarium species associated with grains of sorghum and finger millet from different parts of Ethiopia. Forty-two sorghum and 34 finger millet grain samples were mycologically analysed. All of the sorghum and more than 40% of the finger millet grain samples were contaminated by the Fusarium species. The Fusarium load was higher in sorghum grains than that in finger millet grains. In addition, 67 test isolates were phylogenetically analysed using EF-1α and β-tubulin gene primers. Results revealed the presence of eight phylogenetic placements within the genus Fusarium, where 22 of the isolates showed a close phylogenetic relation to the F. incarnatum–equiseti species complex. Nevertheless, they possess a distinct shape of apical cells of macroconidia, justifying the presence of new species within the Fusarium genus. The new species was the most dominant, represented by 33% of the test isolates. The current work can be seen as an important addition to the knowledge of the biodiversity of fungal species that exists within the Fusarium genus. It also reports a previously unknown Fusarium species that needs to be investigated further for toxin production potential. View Full-Text
Keywords: beta-tubulin gene; DNA sequence; elongation factor gene (EF1-α); species diversity beta-tubulin gene; DNA sequence; elongation factor gene (EF1-α); species diversity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Chala, A.; Degefu, T.; Brurberg, M.B. Phylogenetically Diverse Fusarium Species Associated with Sorghum (Sorghum Bicolor L. Moench) and Finger Millet (Eleusine Coracana L. Garten) Grains from Ethiopia. Diversity 2019, 11, 93.

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