RAPID COMMUNICATION
Isolation and characterization of Alternaria malorum as a causal agent of bark canker on walnut trees
1
Department of Plant Protection, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
A - Research concept and design; B - Collection and/or assembly of data; C - Data analysis and interpretation; D - Writing the article; E - Critical revision of the article; F - Final approval of article
Submission date: 2021-08-31
Acceptance date: 2021-10-14
Online publication date: 2022-03-04
Corresponding author
Doustmorad Zafari
Department of Plant Protection, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
Department of Plant Protection, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
Journal of Plant Protection Research 2022;62(1):102-106
HIGHLIGHTS
- Alternaria malorum as the causal agent of bark canker on walnut trees
- Alternaria malorum is a new fungal pathogen of walnut trees in the world
- Identification the pathogenic fungus caused bark canker disease on walnut trees on the basis of morphological characteristics and molecular assay for the first time in the world
- The present study was focused on identification of causal agent, which involve in pathogenicity. It comprises systematics, taxonomy and pathogenicity
KEYWORDS
TOPICS
ABSTRACT
During 2016–2020, a longitudinal bark canker was observed on walnut branches in some
of the provinces of Iran. The symptoms appeared on one side of the branches. No visible
symptoms were observed on the sapwood after removal of the bark using a blade. In order
to detect a potential agent of these symptoms on walnut trees, collected samples were transferred
to the laboratory for further investigation. After isolation and purification based on
standard methods, a fungus was frequently isolated from symptomatic tissues. Morphological
and molecular assays indicated that the responsible agent of this disease was Alternaria
malorum, moreover, a pathogenicity test confirmed that A. malorum was pathogenic
on walnut trees. To the best of our knowledge, this study represents the first attempt to
identify A. malorum as a new causative agent of bark canker on walnut trees in the world.
ACKNOWLEDGEMENTS
The authors would like to thank the Research Deputy
of the University of Bu-Ali sina, Hamedan, Iran for
their financial support of this project.
RESPONSIBLE EDITOR
Lidia Irzykowska
CONFLICT OF INTEREST
The authors have declared that no conflict of interests exist.
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| eISSN: | 1899-007X |
| ISSN: | 1427-4345 |
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