Studies on air-borne fungi at Qena I. Seasonal fluctuations

Moubasher, A. H.; Abdel-Fattah, H. M.; Swelim, M. A.

doi:10.1002/jobm.3630210310

Cited by 25 publications

(4 citation statements)

References 12 publications

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“…Species of Aspergillus belonging to section Nigri were the most common in the air of grapevine contributing relatively large proportions of Aspergillus count while, A. ochraceus was the most common species in the air of citrus, contributing large numbers of propagules. The dominance of these aspergilli agree with those obtained from the air of citrus plantations (Naim 1967, Moubasher et al 1971, vineyard (Díaz et al 2009), tomato plantations (Lohare et al 2009), air at Assuit (Moubasher & Moustafa 1974, AbuEl-Souod 1974, air at Qena (Moubasher et al 1981(Moubasher et al , 1982) and air at Zagazig (El-Sherbeny 1987).…”

Section: Discussionsupporting

confidence: 77%

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2018

Mycosphere

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Moubasher AH, Abdel-Sater MA, Soliman Zeinab SM 2016 -Biodiversity and molecular characterization of yeast and filamentous fungi in the air of citrus and grapevine plantations in Assiut area, Egypt. Mycosphere 7(3), 236-261, Doi 10.5943/mycosphere/7/3/1 AbstractA total of 218 species and 3 varieties belonging to 83 genera of filamentous and yeast fungi were recovered from the air of both citrus and grapevine plantations. A relatively higher numbers of genera and species were recovered from the air of citrus plantations compared with those recovered from grapevine plantations. The peak of total propagules of fungi caught from the air of citrus plantations was shown in February on both media and from the air of grapevine in December and August on DYM and DRBC, respectively. Their troughs were shown in June and October on DYM and DRBC, respectively for both citrus and grapevine plantations. The widest spectrum of species recovered from the air of citrus plantations was registered in June on both media and from the air of grapevine plantations in February and in April on DYM and DRBC, respectively. The air of citrus plantations shared the air of grapevine plantations in some highly encountered filamentous fungi on both media (Cladosporium, Penicillium, Aspergillus and Alternaria) or on one medium (Cochliobolus, Fusarium, Myrothecium, Phoma and Pleospora). Eighty-four fungal species were isolated from the air of citrus only, while 46 species were isolated from the air of grapevine only.Yeast fungi showed their peak of total propagules from the air of citrus plantations in October and April and from the air of grapevine plantations in June and December on DYM and DRBC, respectively. Fifteen genera and 26 species of yeasts were collected. Two genera of yeasts were encountered in high frequency on one medium and moderate or low on the other medium in the air of both citrus and grapevine plantations and these were Cryptoccocus (4 species) and Rhodotorula (3 species).

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Section: Discussionsupporting

confidence: 77%

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2018

Mycosphere

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“…Aspergillus spp. are one of the most common airborne fungi (Batista et al 1955;Moubasher et al 1981;Gupta et al 1993;Bayman et al 2002: Adhikari et al 2004). The fungi could be both primary and opportunistic pathogens, as well as major allergens (Hedayati et al 2007).…”

Section: Resultsmentioning

confidence: 98%

Chilli rhizosphere fungusAspergillusspp. PPA1 promotes vegetative growth of cucumber (Cucumis sativus) plants upon root colonisation

Islam

Akanda

Sultana

et al. 2013

Archives Of Phytopathology And Plant Protection

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A rhizosphere fungus was isolated from roots of chilli plants and identified as Aspergillus spp. PPA1. The fungus was tested for its ability to promote the growth of cucumber plants in a pot experiment. Cucumber seeds were sown in sterilised field soil amended with wheat grain inoculum (WGI) of PPA 1 at the rate of 0.5, 1 and 1.5% w/w, and plants were grown for 21 days in a net house. The treatment with PPA1 significantly increased shoot length, shoot fresh weight, shoot dry weight, root length, root fresh weight, root dry weight, plant length, leaf area and leaf chlorophyll content of cucumber plants compared to non-treated control. The growth promotion rate increased with the increasing concentration of inoculum of PPA1 applied to the soil. The fungus was re-isolated from the roots of cucumber plants at higher frequencies. These results suggest that Aspergillus spp. PPA1 is a root colonising plant-growth promoting fungus for cucumber.

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“…Representatives of the cosmopolitan genus Cladosporium are frequently found in habitats characterized by low a w , like foods preserved with sugar or salt (Samson et al, 2002 ), salt marshes of Egypt, in the rhizosphere of halophytic plants, and the phylloplane of Mediterranean plants (Abdel-Hafez et al, 1978 ). They are therefore considered xerotolerant with 0.82 being the minimal a w for growth of Cladosporium sphaerospermum (Hocking et al, 1994 ). Cladosporium spp.…”

Section: Discussionmentioning

confidence: 99%

Chaophilic or chaotolerant fungi: a new category of extremophiles?

Zajc

Džeroski²,

Kocev

et al. 2014

Front. Microbiol.

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It is well known that few halophilic bacteria and archaea as well as certain fungi can grow at the highest concentrations of NaCl. However, data about possible life at extremely high concentrations of various others kosmotropic (stabilizing; like NaCl, KCl, and MgSO4) and chaotropic (destabilizing) salts (NaBr, MgCl2, and CaCl2) are scarce for prokaryotes and almost absent for the eukaryotic domain including fungi. Fungi from diverse (extreme) environments were tested for their ability to grow at the highest concentrations of kosmotropic and chaotropic salts ever recorded to support life. The majority of fungi showed preference for relatively high concentrations of kosmotropes. However, our study revealed the outstanding tolerance of several fungi to high concentrations of MgCl2 (up to 2.1 M) or CaCl2 (up to 2.0 M) without compensating kosmotropic salts. Few species, for instance Hortaea werneckii, Eurotium amstelodami, Eurotium chevalieri and Wallemia ichthyophaga, are able to thrive in media with the highest salinities of all salts (except for CaCl2 in the case of W. ichthyophaga). The upper concentration of MgCl2 to support fungal life in the absence of kosmotropes (2.1 M) is much higher than previously determined to be the upper limit for microbial growth (1.26 M). No fungal representatives showed exclusive preference for only chaotropic salts (being obligate chaophiles). Nevertheless, our study expands the knowledge of possible active life by a diverse set of fungi in biologically detrimental chaotropic environments.

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Studies on air-borne fungi at Qena I. Seasonal fluctuations

Cited by 25 publications

References 12 publications

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Chilli rhizosphere fungusAspergillusspp. PPA1 promotes vegetative growth of cucumber (Cucumis sativus) plants upon root colonisation

Chaophilic or chaotolerant fungi: a new category of extremophiles?

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