Characterization of Phytophthora infestans Isolates from Two Potato Varieties in the Highlands  Agro-Ecological Zone of Cameroon

Sylvere Landry Dida Lontsi; Alain Heu; Joseph Djeugap Fovo; William Norbert Kuate Tueguem; Mbatkam Biamen; Fabrice Christian Gbaporo Gbaporo; Zachée Ambang

doi:10.9734/ijpr/2020/v5i130126

Research Article Open access CC BY 4.0

Characterization of Phytophthora infestans Isolates from Two Potato Varieties in the Highlands Agro-Ecological Zone of Cameroon

Sylvere Landry Dida Lontsi, Alain Heu, Joseph Djeugap Fovo, William Norbert Kuate Tueguem, Mbatkam Biamen, Fabrice Christian Gbaporo Gbaporo, Zachée Ambang

International Journal of Pathogen Research · pp. 36–44 · Published 1 Sep 2020

10.9734/ijpr/2020/v5i130126

Abstract

Background: Late blight caused by Oomycete Phytophthora infestans remains a huge problem in potato production and one of the most severe crop diseases worldwide. In Cameroon, the populations characterization of this pathogen remain very little known. Aims: This study aims to characterize isolates of P. infestans collected in twelve localities of Highlands zone of Cameroon. Study Design: Twelve localities in three main potato production areas of the Highlands agro-ecological zone (HAZ) in Cameroon were selected for sample collection. The phenotypic parameters of sporangia were measured. The presence of mating types and pathogenicity tests on detached leaflets of two potato varieties (MANATE and CIPIRA) were assessed. Results: A total of 36 isolates were collected. Height (08) Sporangia shape of P. infestans were obtain and 02 new different shape were pip form and oval to ellipsoid. Sporangia length/width ratio ranged from 1.62 to 2.18. Mating types A1 and A2 were present in the studied areas. Pathogenicity test on detached potato leaflets was positive with all the 36 isolates. The isolate HPBT02 from Tsela locality was more aggressive (P<0.05). MANATE variety was more susceptible. Conclusion: The study shows that mating types A1 and A2 of P. infestans exit in Cameroon and the morphology of sporangia varies according to the localities. Molecular characterization is needed.

Potato Phytophthora infestans isolates phenotypic characterization mating types Cameroon

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Sylvere Landry Dida Lontsi, Alain Heu, Joseph Djeugap Fovo, William Norbert Kuate Tueguem, Mbatkam Biamen, Fabrice Christian Gbaporo Gbaporo, Zachée Ambang (2020). Characterization of Phytophthora infestans Isolates from Two Potato Varieties in the Highlands Agro-Ecological Zone of Cameroon. International Journal of Pathogen Research , 36–44. https://doi.org/10.9734/ijpr/2020/v5i130126

Affiliations

Sylvere Landry Dida Lontsi — Laboratory of Phytopathology and Microbiology, Department of Plant Biology, Faculty of Science, University of Yaounde I, P.O. Box. 812, Yaounde, Cameroon.
Alain Heu — Laboratory of Phytopathology and Microbiology, Department of Plant Biology, Faculty of Science, University of Yaounde I, P.O. Box. 812, Yaounde, Cameroon and Department of Agriculture, Higher Technical Teacher Training College of Ebolowa, University of, Yaounde I, Cameroon.
Joseph Djeugap Fovo — Laboratory of Phytopathology, Department of Agriculture, Faculty of Agronomy and Agricultural Sciences, University of Dschang, P.O. Box 222, Dschang, Cameroon.
William Norbert Kuate Tueguem — Laboratory of Phytopathology and Microbiology, Department of Plant Biology, Faculty of Science, University of Yaounde I, P.O. Box. 812, Yaounde, Cameroon.
Mbatkam Biamen — Laboratory of Phytopathology, Department of Agriculture, Faculty of Agronomy and Agricultural Sciences, University of Dschang, P.O. Box 222, Dschang, Cameroon.
Fabrice Christian Gbaporo Gbaporo — Laboratory of Phytopathology and Microbiology, Department of Plant Biology, Faculty of Science, University of Yaounde I, P.O. Box. 812, Yaounde, Cameroon.
Zachée Ambang — Laboratory of Phytopathology and Microbiology, Department of Plant Biology, Faculty of Science, University of Yaounde I, P.O. Box. 812, Yaounde, Cameroon.

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