Genetic Diversity and Population Structure of Moroccan Isolates Belong to Alternaria spp. Causing Black Rot and Brown Spot in Citrus

Alternaria alternata is one of the most important fungi causing various diseases on citrus worldwide. In Morocco, Alternaria black rot (ABR) and Alternaria brown spot (ABS) are two major diseases causing serious losses in commercial cultivars of citrus. The aim of the present work was to study the g...

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Published in:International journal of genomics 2021, Vol.2021, p.1-11
Main Authors: Zelmat, Lamyaa, Mansi, Joseph Mbasani, Aouzal, Sarra, Gaboun, Fatima, Khayi, Slimane, Ibriz, Mohammed, El Guilli, Mohammed, Mentag, Rachid
Format: Article
Language:English
Subjects:
Alternaria
Alternaria alternata
Black rot
Brown spot
Citrus fruits
Cultivars
Fungi
Genetic diversity
Morphology
Nucleotide sequence
Orchards
Pathogens
Polymorphism
Population
Population genetics
Population structure
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container_title International journal of genomics
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creator Zelmat, Lamyaa
Mansi, Joseph Mbasani
Aouzal, Sarra
Gaboun, Fatima
Khayi, Slimane
Ibriz, Mohammed
El Guilli, Mohammed
Mentag, Rachid
description Alternaria alternata is one of the most important fungi causing various diseases on citrus worldwide. In Morocco, Alternaria black rot (ABR) and Alternaria brown spot (ABS) are two major diseases causing serious losses in commercial cultivars of citrus. The aim of the present work was to study the genetic diversity and the population structure of isolates belonging to sect. Alternaria obtained from infected citrus fruits, collected from seven provinces at different locations in Morocco (markets, packinghouses, and orchards). Forty-five isolates were analyzed by sequence-related amplified polymorphism (SRAP) markers, and cluster analysis of DNA fragments was performed using UPGMA method and Jaccard coefficient. Cluster analysis revealed that isolates were classified in four distinct groups. AMOVA revealed also a large extent of variation within sect. Alternaria isolates (99%). The results demonstrate that no correlation was found among SRAP pattern, host, and geographical origin of these isolates. Population structure analyses showed that the Alternaria isolates from the same collection origin had almost a similar level of admixture.
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subjects Alternaria
Alternaria alternata
Black rot
Brown spot
Citrus fruits
Cultivars
Fungi
Genetic diversity
Morphology
Nucleotide sequence
Orchards
Pathogens
Polymorphism
Population
Population genetics
Population structure
title Genetic Diversity and Population Structure of Moroccan Isolates Belong to Alternaria spp. Causing Black Rot and Brown Spot in Citrus
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