Virology & Mycology
Open Access
ISSN: 2161-0517
+44 1223 790975
ISSN: 2161-0517
+44 1223 790975
Bengyella Louis
University of Health and Allied Sciences, Ghana
Scientific Tracks Abstracts: Virol Mycol
Extreme temperature fluctuations affect the interaction dynamics of Cochliobolus lunatus through temperature-dependent virulence, virulence differentiation and induced-virulence which poses a major threat to global food security. The relationship between higher temperature and pathogenicity of C. lunatus on reported hosts are poorly understood. In this study temperature stress was applied on C. lunatus to investigate the correlation among the different types of conidia. Additionally, a comparatively dissection of the invasion process, infection structures and conidial germination pattern on four different Solanum tuberosum L. (potato) cultivars were performed. Based on microscopic and secretome examination, it was found that C. lunatus adopt different hyphae morphology and septation pattern at different temperature regimes and produce different types of conidia and proteins during invasion. The study showed that four-celled conidia are overproduced at elevated temperature (>30 �?ºC) than one, two, three and five-celled conidia. Our finding revealed that C. lunatus conidia exhibit bipolar germination (>14.67%, P<0.05), unipolar germination (>35.33%, P<0.05), penetrate subcutaneously via epidermal anticlinal cell wall (>0.33%, P<0.05) and differentially form appressoria-like structures during colonization of four different potato cultivars. Importantly it is shown that unipolar germination and bipolar germination in C. lunatus are independent occurring phenomenon irrespective of the host. It is confirmed that C. lunatus adopt different but highly successful strategies on four different potato cultivars to incite brown-to-black leaf spot disease. Altogether our data showed that increase temperature enhances C. lunatus virulence on different potato cultivars irrespective of their inherent thermotolerant traits.
Bengyella Louis has completed his PhD from the University of Burdwan, India and Postdoctoral studies from the University of the Witwatersrand School of Cell and Molecular Biology. He is a Lecturer in the University of Health and Allied Sciences, Ghana. He has published 30 papers in reputed journals and has been serving as an Editorial Board Member for Springer, Elsevier, Sciencealert and Academic publishers.
Email: bengyellalouis@gmail.com