Occurrence of Frogeye Leaf Spot, Caused by <i>Cercospora nicotianae</i>, on Greenhouse Tobacco Transplants in Kentucky

Dixon, Ed; Kennedy, Brenda; Pearce, Robert C.; Pfeufer, Emily E.

doi:10.1094/pdis-10-17-1548-pdn

Cited by 7 publications

(2 citation statements)

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“…This crop is often used in cigarette blends or mixtures for pipe smoking and also a valuable medicinal plant as it has high alkaloid content. However, many post-harvest diseases such as frogeye leaf spot of tobacco (Dixon et al, 2018), blue mold (Blanco-Meneses et al, 2018), and tobacco soft rot (Wang R. et al, 2017) during production result in devastating losses. After harvesting from the field, leaves are stored for curing, redrying, aging, and fermentation, which negatively affect leaf carotenoids that slowly oxidize and importantly, cause degradation (Zhu et al, 2016;Popova et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Deciphering the Bacillus amyloliquefaciens B9601-Y2 as a Potential Antagonist of Tobacco Leaf Mildew Pathogen During Flue-Curing

Pan

Munir

et al. 2021

Front. Microbiol.

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Tobacco leaf mildew caused by Rhizopus oryzae (Mucorales, Zygomycota) is an important and devastating post-harvest disease during flue-cured tobacco period, and also is known to cause diseases of fruits and vegetables. In this study, assessment of several candidate biological control agents were first tested in vitro to determine their antifungal activities and potential strains were further applied to tobacco leaves to prevent pathogen colonization during the tobacco-curing process. In vitro screening of 36 bacteria and the isolates of one fungus were performed for their antifungal activities against R. oryzae using dual culture method. Potential five isolates viz. Bacillus amyloliquefaciens B9601-Y2 (Y2), B. amyloliquefaciens YN201728 (YN28), Pseudomonas sp. (Pb), and B. amyloliquefaciens YN201732 (YN32) and T. harzianum B (Th-B) from total screened isolates have shown remarkable results for controlling the mycelial growth of R. oryzae. Finally, out of these five isolates, B. amyloliquefaciens B9601-Y2 potentially reduced the mycelial growth of fungal pathogen with great inhibitory effect. In order to get a better understanding of the biocontrol effect of B9601-Y2 in a flue-curing barn, various suspension density tests with two application methods involving spraying and soaking were examined. Two application methods of B. amyloliquefaciens B9601-Y2 had 98.60 and 98.15% control effects, respectively. In curing barn, the incidence in the treatment group was significantly reduced and tobacco leaves did not get mildew. Altogether, the study demonstrated that candidate bacterial strain B. amyloliquefaciens B9601-Y2 is a potential antagonist for the management of tobacco leaf mildew during flue-curing.

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Section: Introductionmentioning

confidence: 99%

Deciphering the Bacillus amyloliquefaciens B9601-Y2 as a Potential Antagonist of Tobacco Leaf Mildew Pathogen During Flue-Curing

Pan

Munir

et al. 2021

Front. Microbiol.

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“…2016 ; Dixon et al. 2018 ; Guo 2021 ). The typical specimen was collected from tobacco planted in Shibing County of Guizhou Province, China (107.55 E; 27.08 N), and the strain was isolated and preserved in Guizhou Academy of Tobacco Science (specimen voucher: YC1110; Ning Lu; lu_ning@126.com ).…”

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confidence: 99%

Characterization of the complete mitochondrial genome of Cercospora nicotianae (Ellis & Everh, 1893) (Dothideomycetes: Capnodiales)

Lü

Chen

Pan

et al. 2021

Mitochondrial DNA Part B

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The mitochondrial genome of the fungal pathogen Cercospora nicotianae was sequenced for the first time using a combination of Illumina and Nanopore sequencing technologies. The circular genome is 27,737 bp in length with G + C content of 27.43%, consisting of 15 protein-coding genes, 26 transfer RNA genes and 2 ribosomal RNA genes. Phylogenetic analysis shows that the C. nicotianae mtDNA is closely related to Pseudocercospora fijiensis .

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Cercospora cf. nicotianae is a causal agent of Cercospora leaf blight of soybean

et al. 2020

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Occurrence of Frogeye Leaf Spot, Caused by Cercospora nicotianae, on Greenhouse Tobacco Transplants in Kentucky

Cited by 7 publications

References 0 publications

Deciphering the Bacillus amyloliquefaciens B9601-Y2 as a Potential Antagonist of Tobacco Leaf Mildew Pathogen During Flue-Curing

Deciphering the Bacillus amyloliquefaciens B9601-Y2 as a Potential Antagonist of Tobacco Leaf Mildew Pathogen During Flue-Curing

Characterization of the complete mitochondrial genome of Cercospora nicotianae (Ellis & Everh, 1893) (Dothideomycetes: Capnodiales)

Cercospora cf. nicotianae is a causal agent of Cercospora leaf blight of soybean

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