Biodiversity of Aspergillus species in some important agricultural products

Giancarlo Perrone, A. Susca, G. Cozzi, K. Ehrlich, J. Varga, J. C. Frisvad, M. Meijer, P. Noonim, W. Mahakamchanakul, R. A. Samson

Research output: Contribution to journalArticle

163 Citations (Scopus)

Abstract

The genus Aspergillus is one of the most important filamentous fungal genera. Aspergillus species are used in the fermentation industry, but they are also responsible of various plant and food secondary rot, with the consequence of possible accumulation of mycotoxins. The aflatoxin producing A. flavus and A. parasiticus, and ochratoxinogenic A. niger, A. ochraceus and A. carbonarius species are frequently encountered in agricultural products. Studies on the biodiversity of toxigenic Aspergillus species is useful to clarify molecular, ecological and biochemical characteristics of the different species in relation to their different adaptation to environmental and geographical conditions, and to their potential toxigenicity. Here we analyzed the biodiversity of ochratoxin producing species occurring on two important crops: grapes and coffee, and the genetic diversity of A. flavus populations occurring in agricultural fields. Altogether nine different black Aspergillus species can be found on grapes which are often difficult to identify with classical methods. The polyphasic approach used in our studies led to the identification of three new species occurring on grapes: A. brasiliensis, A. ibericus, and A. uvarum. Similar studies on the Aspergillus species occurring on coffee beans have evidenced in the last five years that A. carbonarius is an important source of ochratoxin A. in coffee. Four new species within the black aspergilli were also identified in coffee beans: A. sclerotioniger, A. lacticoffeatus, A. sclerotiicarbonarius, and A. aculeatinus. The genetic diversity within A. flavus populations has been widely studied in relation to their potential aflatoxigenicity and morphological variants L- and S-strains. Within A. flavus and other Aspergillus species capable of aflatoxin production, considerable diversity is found. We summarise the main recent achievements in the diversity of the aflatoxin gene cluster in A. flavus populations, A. parasiticus and the non-toxigenic A. oryzae. Studies are needed in order to characterise the aflatoxin biosynthetic genes in the new related taxa A. minisclerotigenes and A. arachidicola.

Original languageEnglish
Pages (from-to)53-66
Number of pages14
JournalStudies in Mycology
Volume59
DOIs
Publication statusPublished - 2007

Fingerprint

Biodiversity
Aspergillus
agricultural products
Aflatoxins
Coffee
biodiversity
Vitis
aflatoxins
grapes
coffee beans
Population
fermentation industry
Ochratoxins
Aspergillus flavus
Edible Plants
Aspergillus carbonarius
Mycotoxins
ochratoxins
genetic variation
Multigene Family

Keywords

  • Aflatoxins
  • Aspergillus Sect.
  • Grapes
  • Nigri
  • Ochratoxin A
  • Polyphase identification coffee beans
  • Sect. Flavi

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)
  • Plant Science

Cite this

Perrone, G., Susca, A., Cozzi, G., Ehrlich, K., Varga, J., Frisvad, J. C., ... Samson, R. A. (2007). Biodiversity of Aspergillus species in some important agricultural products. Studies in Mycology, 59, 53-66. https://doi.org/10.3114/sim.2007.59.07

Biodiversity of Aspergillus species in some important agricultural products. / Perrone, Giancarlo; Susca, A.; Cozzi, G.; Ehrlich, K.; Varga, J.; Frisvad, J. C.; Meijer, M.; Noonim, P.; Mahakamchanakul, W.; Samson, R. A.

In: Studies in Mycology, Vol. 59, 2007, p. 53-66.

Research output: Contribution to journalArticle

Perrone, G, Susca, A, Cozzi, G, Ehrlich, K, Varga, J, Frisvad, JC, Meijer, M, Noonim, P, Mahakamchanakul, W & Samson, RA 2007, 'Biodiversity of Aspergillus species in some important agricultural products', Studies in Mycology, vol. 59, pp. 53-66. https://doi.org/10.3114/sim.2007.59.07
Perrone, Giancarlo ; Susca, A. ; Cozzi, G. ; Ehrlich, K. ; Varga, J. ; Frisvad, J. C. ; Meijer, M. ; Noonim, P. ; Mahakamchanakul, W. ; Samson, R. A. / Biodiversity of Aspergillus species in some important agricultural products. In: Studies in Mycology. 2007 ; Vol. 59. pp. 53-66.
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