Genetic diversity and structure of pearl millet infecting populations of Magnaporthe grisea


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Authors

  • T Yella Goud
  • S Madhavan
  • S P Deshpande
  • G Uma Devi
  • Rajan Sharma

Keywords:

Blast, Magnaporthe grisea, Pennisetum glaucum, Universal Rice Primers (URPs)

Abstract

Genetic diversity and structure of pearl millet infecting population of Magnaporthe grisea was studied using Universal Rice Primers (URPs). Sixty fve isolates of M. grisea from pearl millet and fve isolates from other hosts were used in this study. Nine URP primers (URP-1F, 2F, 4R, 6R, 9F, 17R, 25F, 30F and 38F) produced 105 easily scorable amplifed fragments. The polymorphic information content for URPs varied from 0.32 to 0.50 with an average of 0.43. Cluster analysis separated the isolates into fve main clusters. Analysis of molecular variance (AMOVA) revealed that 16% of the genetic variation was due to difference between populations of M. grisea adapted to pearl millet and non-pearl millet hosts, and 84% variation was due to difference in the isolates. The results of population structure analysis revealed that isolates were grouped in different clusters according to their genetic relatedness irrespective of their host origin as well as geographical distribution.

Submitted

2020-09-30

Published

2020-09-30

Issue

Vol. 45 No. 3 (2017)

Section

Articles

License

Manuscript will be accepted on the understanding that their content is original and that permission has been received in writing wherever necessary to produce previously published material (including quotations, data and illustrations) and that the manuscript has not been submitted/ accepted for publication elsewhere. Copyright resides with the Plant Protection Association of India.

How to Cite

Goud, T. Y., Madhavan, S., Deshpande, S. P., Devi, G. U., & Sharma, R. (2020). Genetic diversity and structure of pearl millet infecting populations of Magnaporthe grisea. Indian Journal of Plant Protection, 45(3). https://epubs.icar.org.in/index.php/IJPP/article/view/105415