Microfungi on Land Plants. An Identification Handbook.

Rogerson, Clark T.

doi:10.2307/2807072

Cited by 22 publications

(32 citation statements)

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“…Spore sizes of the isolates ranged between 2.38−13.09 × 12.30−43.63 μm. These measurements agreed precisely with published descriptions of A. alternata (Rotem 1994) and differed from reported measurements for A. solani; 15−19 × 150−300 μm (Ellis and Ellis 1985) and 12−20 × 67−178 μm (Rotem 1981).…”

Section: Discussionsupporting

confidence: 86%

“…Alternaria solani has dark-coloured mycelium, and in older diseased tissues it produces short, simple, erect conidiophores that bear single or branched chains of conidia (Agrios 2005). The fungus produces large conidia which are broadest near the base and often gradually taper to an elongated beak (rostate), typically ovoid or obclavate, pale brown to brown, and multicelled, with transverse and frequently also longitudinal septa (Ellis and Ellis 1985;Rotem 1994;Thomma 2003). In 1985, Ellis and Ellis stated "A. solani is characterized by solitary, golden brown and beaked conidia that have 9−11 transverse septa and few or no longitudinal septa".…”

Section: Introductionmentioning

confidence: 99%

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Journal of Plant Protection Research

Abbo¹,

Idris²,

Elballa³

et al. 2018

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Early blight disease caused by Alternaria sp. is one of the most devastating diseases of Solanaceous crops widely distributed in Sudan. The aim of this study was to determine the genetic variation among different Alternaria isolates recovered from different Solanaceae crops showing typical symptoms of early blight disease. Infected leaves of tomato, potato, eggplant and pepper were collected from different geographical zones in Sudan. The recovered fungal isolates were identified to the genus level based on cultural and morphological characteristics. Five representative isolates were sent to the CABI Bioscience, U.K. for confirmation. The genetic relationship among the isolates was determined using the amplified fragments length polymorphism (AFLP) technique and the generated data were used to create similarity matrices using the PAST 3.01 software package. Dendrograms were constructed based on Jaccard's similarity coefficients. A total of 70 fungal isolates was recovered from the tested plants and all of them showed morphological characteristics typical of Alternaria spp. The conidia appeared in multiple-branched chains with spore sizes in the range of 2.38−13.09 μm × 12.30−43.63 μm. Therefore, the isolates were identified as Alternaria alternata (Fr.) Keissl. The identification was then confirmed by CABI.AFLPbased dendrogram which revealed five clusters with a significant cophenetic correlation coefficient (r = 0.834) between the dendrogram and the original similarity matrix irrespective of their geographical origins. Eighteen (75%) of the Alternaria isolated from tomato leaves were clustered together in cluster I and five isolates formed two separate clusters, viz. cluster IV (T-Kh5 and T-H1) and cluster V (T-H4 and T-Med2). The remaining isolate, T-Am5, grouped with one of the potato isolates in cluster III. The other isolates which were recovered from potato, pepper and eggplants were all separated from the tomato isolates in the largest cluster.

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Section: Discussionsupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Journal of Plant Protection Research

Abbo¹,

Idris²,

Elballa³

et al. 2018

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“…Thirty-three A. flavus isolates were found in bakery food products (Figure 1). The A. flavus isolates were identified by observing their morphological characteristics in accordance with the key descriptions provided by Domsch et al 1980;Subramanian, 1983;Ellis & Ellis, 1997;Gilman, 2001& Nagamani et al 2006. The % detection of A. flavus in Bathi, Kodaganur, Bada, sasalu, Mayakonda, Avargere, Anaberu, Alur, Attigere, Echagatta was 18.18% (6), 6.06% (2), 6.06% (2), 3.03% (1), 3.03% (1), 0% (0), 3.03% (1), 15.15% (5), 36.36% (12), 9.09% (3) respectively.…”

Section: Aflavus Detectionmentioning

confidence: 95%

“…Aspergillus flavus were identified based on morphological and microscopic observation, after staining with lactophenol cotton blue stain followed by Domsch et al 1980;Subramanian, 1983;Ellis & Ellis, 1997;Gilman, 2001& Nagamani et al 2006.…”

Section: Aspergillus Flavus Characterizationmentioning

confidence: 99%

Characterization and Determination of Aflatoxigenic and Non-aflatoxigenic Aspergillus flavus Isolated from Bakery Food Products from Frontier around Davangere District

Sowmya¹

2023

Ind. J. Pure App. Biosci.

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Mycotoxins are secondary metabolites produced by filamentous fungi in food and feed due to several conditions that affect fungal growth and mycotoxin production in different ways. Mycotoxin contamination in bakery food products is seriously dangerous to humans and animals. This study aimed to morphologically characterize and determine the aflatoxigenic and non-aflatoxigenic Aspergillus flavus isolates. Thirty three isolates of A.flavus were obtained from bakery food products collected from bakeries in rural areas like Bathi, Kodaganur, Bada, sasalu, Mayakonda, Avargere, Anaberu, Alur, Attigere, Echagatta around Davangere city. They were cultured on Potato Dextrose Agar medium (PDA), Rose Bengal Agar medium (RBA), Czapec(dox) agar medium (CZA) and Sabouraud’s dextrose agar medium (SDA). By observing the colony color and texture macromorphological characteristics were determined and micromorphological characteristics were determined by observing the spore color, size, structure, conidiophore structure, conidia, vesical shape under microscope. The production of aflatoxin was determined by UV fluorescence of isolates on coconut cream agar (CCA) medium plates. In aflatoxin detection 20 (60.60%) isolates of A.flavus shows positive results and 13 (39.39%) isolates of A.flavus shows negative results. The highest incidence of A.flavus was recorded in samples collected from Attigere followed by Bathi, Alur, Echagatta, Kodaganur, Bada, Anaberu, Sasalu, Mayakonda, Avargere. The incidence of A.flavus that produces aflatoxin highlights the necessity of taking action to eliminate their presence in food. The non-aflatoxigenic strains are being used in a biological control strategy to outcompete the aflatoxigenic ones.

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“…In the present study, N. gaeumannii was one of the most common fungal species isolated from Douglas fir, but it was seldom found on needles in the litter, and Stone, Capitano, and Kerrigan (2008) report that it does not persist as a saprotroph which might explain its rare occurrence in this niche. There are only sporadic previous records of this fungus associated with this host in the UK (e.g., Boyce, 1940;Ellis & Ellis, 1997;Liese, 1939;Peace, 1962;Wilson & Waldie, 1928) and it is apparently not an important pathogen although it is possible that climate change could increase its severity should there be both increased winter temperatures and spring precipitation (Montwé et al, 2020;Stone, Coop, & Manter, 2008). For instance, climate change is implicated in the increase in severity of the disease in the past 30 years even in natural, mature stands (Hansen et al, 2000;Stone, Coop, & Manter, 2008).…”

Section: Nothophaeocryptopus Pathogenicity and Occurrencementioning

confidence: 99%

Towards resolving Nothophaeocryptopus and Rhizosphaera inhabitants of spruce needles

Taylor

Koukol

2023

Forest Pathology

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Sitka spruce (Picea sitchensis (Bong.) Carr.) is currently the most important forestry tree in Scotland and constitutes more than half of the 1 million hectares of conifer forests (Cameron, 2015).Sitka spruce has proven an important crop for a variety of reasons (Cameron, 2015), including the relative lack of diseases affecting it.However, there are concerns regarding the effect of climate change on the viability of this tree species when grown in pure, even-aged stands, as it is now cultivated. The potential impacts of climate change on tree growth, as well as pest and disease severity and occurrence, are likely to be compounded by the above-mentioned silviculture practices used for Sitka spruce (Cameron, 2015), and the limited genetic diversity of the planted trees (Ennos et al., 2019). In

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Microfungi on Land Plants. An Identification Handbook.

Cited by 22 publications

References 0 publications

Journal of Plant Protection Research

Journal of Plant Protection Research

Characterization and Determination of Aflatoxigenic and Non-aflatoxigenic Aspergillus flavus Isolated from Bakery Food Products from Frontier around Davangere District

Towards resolving Nothophaeocryptopus and Rhizosphaera inhabitants of spruce needles

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