Effect of Acclimatization in Elevated CO<sub>2</sub> on Growth and Aflatoxin B<sub>1</sub> Production by <i>Aspergillus flavus</i> Strains on Pistachio Nuts
There is little knowledge of the effect of acclimatization of <i>Aspergillus flavus</i> strains to climate-related abiotic factors and the subsequent effects on growth and aflatoxin B<sub>1</sub> (AFB<sub>1</sub>) production. In this study, two strains of <i>...
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MDPI AG
2021-12-01
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| Series: | Microorganisms |
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| Online Access: | https://www.mdpi.com/2076-2607/10/1/49 |
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| author | Alaa Baazeem Angel Medina Naresh Magan |
| author_facet | Alaa Baazeem Angel Medina Naresh Magan |
| author_sort | Alaa Baazeem |
| collection | DOAJ |
| description | There is little knowledge of the effect of acclimatization of <i>Aspergillus flavus</i> strains to climate-related abiotic factors and the subsequent effects on growth and aflatoxin B<sub>1</sub> (AFB<sub>1</sub>) production. In this study, two strains of <i>A. flavus</i> (AB3, AB10) were acclimatized for five generations in elevated CO<sub>2</sub> (1000 ppm × 37 °C) on a milled pistachio-based medium. A comparison was made of the effects of non-acclimatized strains and those that were acclimatized when colonizing layers of pistachio nuts exposed to 35 or 37 °C, 400 or 1000 ppm CO<sub>2</sub>, and 0.93 or 0.98 water activity (a<sub>w</sub>), respectively. Acclimatization influenced the fitness in terms of the growth of one strain, while there was no significant effect on the other strain when colonizing pistachio nuts. AFB<sub>1</sub>, production was significantly stimulated after ten days colonization when comparing the non-acclimatized and the acclimatized AB3 strain. However, there was no significant increase when comparing these for strain AB10. This suggests that there may be inter-strain differences in the effects of acclimatization and this could have a differential influence on the mycotoxin contamination of such commodities. |
| first_indexed | 2024-03-10T00:53:55Z |
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| id | doaj.art-8357b664558b45088cc3a69429c21b77 |
| institution | Directory Open Access Journal |
| issn | 2076-2607 |
| language | English |
| last_indexed | 2024-03-10T00:53:55Z |
| publishDate | 2021-12-01 |
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| record_format | Article |
| series | Microorganisms |
| spelling | doaj.art-8357b664558b45088cc3a69429c21b772023-11-23T14:46:29ZengMDPI AGMicroorganisms2076-26072021-12-011014910.3390/microorganisms10010049Effect of Acclimatization in Elevated CO<sub>2</sub> on Growth and Aflatoxin B<sub>1</sub> Production by <i>Aspergillus flavus</i> Strains on Pistachio NutsAlaa Baazeem0Angel Medina1Naresh Magan2Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi ArabiaApplied Mycology Group, School of Water, Energy and Environment, Cranfield University, Cranfield MK43 0AL, UKApplied Mycology Group, School of Water, Energy and Environment, Cranfield University, Cranfield MK43 0AL, UKThere is little knowledge of the effect of acclimatization of <i>Aspergillus flavus</i> strains to climate-related abiotic factors and the subsequent effects on growth and aflatoxin B<sub>1</sub> (AFB<sub>1</sub>) production. In this study, two strains of <i>A. flavus</i> (AB3, AB10) were acclimatized for five generations in elevated CO<sub>2</sub> (1000 ppm × 37 °C) on a milled pistachio-based medium. A comparison was made of the effects of non-acclimatized strains and those that were acclimatized when colonizing layers of pistachio nuts exposed to 35 or 37 °C, 400 or 1000 ppm CO<sub>2</sub>, and 0.93 or 0.98 water activity (a<sub>w</sub>), respectively. Acclimatization influenced the fitness in terms of the growth of one strain, while there was no significant effect on the other strain when colonizing pistachio nuts. AFB<sub>1</sub>, production was significantly stimulated after ten days colonization when comparing the non-acclimatized and the acclimatized AB3 strain. However, there was no significant increase when comparing these for strain AB10. This suggests that there may be inter-strain differences in the effects of acclimatization and this could have a differential influence on the mycotoxin contamination of such commodities.https://www.mdpi.com/2076-2607/10/1/49<i>Aspergillus</i>aflatoxin B<sub>1</sub>climate changeacclimatizationgrowthresilience |
| spellingShingle | Alaa Baazeem Angel Medina Naresh Magan Effect of Acclimatization in Elevated CO<sub>2</sub> on Growth and Aflatoxin B<sub>1</sub> Production by <i>Aspergillus flavus</i> Strains on Pistachio Nuts Microorganisms <i>Aspergillus</i> aflatoxin B<sub>1</sub> climate change acclimatization growth resilience |
| title | Effect of Acclimatization in Elevated CO<sub>2</sub> on Growth and Aflatoxin B<sub>1</sub> Production by <i>Aspergillus flavus</i> Strains on Pistachio Nuts |
| title_full | Effect of Acclimatization in Elevated CO<sub>2</sub> on Growth and Aflatoxin B<sub>1</sub> Production by <i>Aspergillus flavus</i> Strains on Pistachio Nuts |
| title_fullStr | Effect of Acclimatization in Elevated CO<sub>2</sub> on Growth and Aflatoxin B<sub>1</sub> Production by <i>Aspergillus flavus</i> Strains on Pistachio Nuts |
| title_full_unstemmed | Effect of Acclimatization in Elevated CO<sub>2</sub> on Growth and Aflatoxin B<sub>1</sub> Production by <i>Aspergillus flavus</i> Strains on Pistachio Nuts |
| title_short | Effect of Acclimatization in Elevated CO<sub>2</sub> on Growth and Aflatoxin B<sub>1</sub> Production by <i>Aspergillus flavus</i> Strains on Pistachio Nuts |
| title_sort | effect of acclimatization in elevated co sub 2 sub on growth and aflatoxin b sub 1 sub production by i aspergillus flavus i strains on pistachio nuts |
| topic | <i>Aspergillus</i> aflatoxin B<sub>1</sub> climate change acclimatization growth resilience |
| url | https://www.mdpi.com/2076-2607/10/1/49 |
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