ArticleWorld journal of microbiology & biotechnology2023
Calonectria populi sp. nov., causing leaf blight of Populus deltoides in India.
Article in World journal of microbiology & biotechnology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Populus deltoides is one of the most favored cash crops in northern India. Thus, accurate identification of pathogens affecting P. deltoides is a critical step in finding or developing effective control measures. In June 2020, symptoms of a leaf blight disease were observed on P. deltoides trees planted at Forest Research Institute, Dehradun, India. Calonectria-like fungal isolates were consistently isolated from the infected leaf samples. Morphological features coupled with phylogenetic analysis of combined partial actin (act), calmodulin (cmdA), histone (his3), translation elongation factor 1-alpha (tef1) and β-tubulin (tub2) gene regions of two fungal isolates confirmed a novel species, which is described and illustrated here as Calonectria populi sp. nov. Symptoms similar to those observed in natural conditions were caused by both the isolates on P. deltoides clone AM109 in detached leaf assays and glasshouse inoculation experiments. Finally, Koch's postulates were established by re-isolation and re-identification of the pathogen from the inoculated leaves. This work is the first to confirm a new leaf blight disease of P. deltoides caused by C. populi sp. nov. in India and worldwide.
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