First report of Penicillium georgiense as a fungal pathogen of onion (Allium cepa L.)

Oh, Ji Yeon; Han, Gyung Deok; Jeong, Jin Ju; Sang, Mee Kyung; Chun, Se Chul; Kim, Ki Deok

doi:10.1016/j.cropro.2015.02.009

Cited by 14 publications

(8 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The prominent bacteria isolates implicated in onion bulb rot include; Erwinia spp., Pseudomonas aeruginosa, Enterobacter spp., Bacillus spp., Escherichia coli, Staphylococcus spp., among others [33,34,15]. The pathogenicity test carried out on the bacterial isolates obtained in this study reveals that the bacterial isolates were able to successfully cause rot in healthy onion bulb under favourable conditions, just like their fungal counterparts that have been established previously to cause bulb rot in onion [32,27,8]. It has been shown that the bacterial bulb rot is caused by Bacillus amyloliquefaciens in a study conducted in Korea with dark brown lesions observed in the rotten onion [34], likewise, the Bacillus spp.…”

Section: Gibellula Suffultamentioning

confidence: 65%

“…The shelf life of onion is reduced by contamination with pathogenic bacteria and fungi that cause postharvest diseases [6,7]. Besides, about 20-30% postharvest loss of onion is attributed not only to microbial infection but also to mechanical damage during the process of transportation [8,9]. Consuming contaminated fruits and vegetables has been established as one of the main sources of diverse diseases in humans [2,10,11,12,13].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Deterioration Profile of Postharvest Onion (Allium cepa L.) Bulbs Induced by Potential Pathogenic Microorganisms

Torimiro

Makinde

Omole

et al. 2020

IJPR

View full text Add to dashboard Cite

Onion (Allium cepa L.) is a highly nutritive vegetable with about 2 million metric tons grown annually in Nigeria, but the majority is lost to postharvest spoilage, especially through microbial infection. In this study, we identified bacteria and fungi associated with postharvest spoilage in onion bulbs and determined the pathogenicity of the bacterial isolates. Two weeks stored onion bulbs were purchased at a market in Ile-Ife, rinsed in 5% HOCL and aseptically cut into seven sections each. The fourteen sections obtained were swabbed daily with sterile cotton-tipped applicators for seven days. The swabs were streaked onto the surface of Nutrient Agar (NA) and selective/differential media plates for the isolation of bacteria, and Potato Dextrose Agar (PDA) plates for the cultivation of fungi. The bacterial plates were incubated at 37°C for 24 hours, while the fungal plates were incubated at 25°C for 5 days. The isolates were identified based on standard microbiological methods. Pathogenicity tests of the bacterial isolates from each of the genera was carried out by re-inoculation on the inner tissues of fresh onion bulbs that have been cleaned with 1% NaOCL, an uninoculated onion bulb served as the control. Thirty-five (35) bacterial isolates belonging to four different genera were identified, which included; 11 (31.4%) Staphylococcus spp., 9 (25.7%) Micrococcus spp., 8 (22.9%) Bacillus spp. and 7 (20%) Flavobacterium spp. Seven (7) fungal isolates were identified which included; 5 (71.4%) Aspergillus fumigatus, 1 (14.3%) Gibellula suffulta and 1 (14.3%) Hirsutella saussueri. Pathogenicity tests revealed that all the bacterial isolates were able to cause rot in onion in comparison with the control which had no observable rot; Flavobacterium spp. (28 mm) was the most pathogenic, while Micrococcus spp. was the least pathogenic (14 mm) based on the diameter of rot formation within seven days. These findings revealed that spoilage microorganisms can cause onion rot, hence, onions already showing contamination symptoms should be separated from fresh ones to avoid cross-contamination, while adequate care should be taken before consumption of onion to avoid foodborne illnesses and diseases.

show abstract

Section: Gibellula Suffultamentioning

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Deterioration Profile of Postharvest Onion (Allium cepa L.) Bulbs Induced by Potential Pathogenic Microorganisms

Torimiro

Makinde

Omole

et al. 2020

IJPR

View full text Add to dashboard Cite

show abstract

“…The conidia were subglobose and smooth‐walled. These morphological characteristics suggested that isolate F12‐20 is similar to genus Penicillium (Oh et al, ).…”

Section: Resultsmentioning

confidence: 93%

Selective antifungal activity of chitosan and sulfonated chitosan against postharvest fungus isolated from blueberry

et al. 2018

View full text Add to dashboard Cite

Two fungal isolates, F12‐20 and F3‐1, were collected from postharvest blueberry in China. By phylogenetic analysis with the nuclear ribosomal internal transcribed spacer region and morphological analyses, they were initially identified as Penicillium and Arthrinium sacchari (A. sacchari). The results showed that water‐soluble chitosan (WCS) and sulfonated chitosan (SCS) could significantly reduce the radial growth of fungal mycelia. The best concentrations were 0.25 and 16 g L–1 for WCS and 0.50 and 64 g L–1 for SCS against Penicillium sp. and A. sacchari, respectively. Importantly, SCS exhibited selective antifungal activity against Botrytis cinerea and A. sacchari. As different species of fungi may respond differently to fungicides, the findings of this study will provide a basis for the development of target‐specific pathogen control and will be useful in designing and implementing fungicide resistance management for control postharvest decay, thus extending the storage life of fresh blueberry. Practical application Experimental results obtained herein are useful for designing and implementing fungicide resistance management for control postharvest decay in blueberry to improve marketable fruit and extend the storage life of fresh blueberries. And sulfonated chitosan can be applied to the target‐specific pathogen control.

show abstract

“…2014. As new species are still being described and new host records published (e.g., Strausbaugh & Dugan 2017, Oh & al. 2015, Sang & al.…”

Section: Introductionmentioning

confidence: 99%

Catalog of Penicillium spp. causing blue mold of bulbs, roots, and tubers

Dugan¹,

Strausbaugh²

2019

mycotaxon

View full text Add to dashboard Cite

Accuracy in assigning specific epithets to Penicillium isolates documented as agents of blue mold of edible and ornamental bulb, root, and tuber crops is highly variable-with methods ranging from appropriate (recent morpho-cultural criteria, metabolite production, DNA sequences), to plausible (older morpho-cultural criteria from monographs), to suspect (unspecified methods, identification via inappropriate literature). We provide a catalogue appropriate for plausibly assigned names accompanied by authorities, references, host distribution, and identification methodology. Names are categorized according to (i) segregates of P. corymbiferum (i.e., names in P. subg. Penicillium) and taxa in P. ser. Corymbifera associated with Liliaceae s.l.; (ii) taxa in P. subg. Penicillium other than P. ser. Corymbifera associated with Liliaceae s.l.; (iii) taxa other than P. subg. Penicillium associated with Liliaceae s.l.; (iv) associates of Beta vulgaris (beets and sugar beets); and (v) associates of mostly tropical or subtropical roots and tubers. Ambiguities or deficiencies in assignment of certain specific epithets are noted.

show abstract

First report of Penicillium georgiense as a fungal pathogen of onion (Allium cepa L.)

Cited by 14 publications

References 18 publications

Deterioration Profile of Postharvest Onion (Allium cepa L.) Bulbs Induced by Potential Pathogenic Microorganisms

Deterioration Profile of Postharvest Onion (Allium cepa L.) Bulbs Induced by Potential Pathogenic Microorganisms

Selective antifungal activity of chitosan and sulfonated chitosan against postharvest fungus isolated from blueberry

Catalog of Penicillium spp. causing blue mold of bulbs, roots, and tubers

Contact Info

Product

Resources

About