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Interacting Abiotic Factors Affect Growth and Mycotoxin Production Profiles of Section Strains on Chickpea-Based Media. | LitMetric

Interacting Abiotic Factors Affect Growth and Mycotoxin Production Profiles of Section Strains on Chickpea-Based Media.

Pathogens

Instituto de Investigación en Micología y Micotoxicología, (IMICO), CONICET-UNRC, Ruta 36 Km 601, Río Cuarto 5800, Córdoba, Argentina.

Published: April 2023

AI Article Synopsis

  • Chickpeas are prone to fungal infections and mycotoxin contamination, which is significant since Argentina exports most of its chickpea production and quality is critical.
  • A study evaluated how varying water activity and temperature affect the growth of fungi and the production of mycotoxins, AOH, AME, and TA, using strains isolated from chickpeas in Argentina.
  • Results showed that maximum fungal growth occurred at high water activity (0.99) and 25 °C, while mycotoxin production varied by strain and depended on specific temperature and water activity conditions, indicating risks during chickpea maturation and storage.

Article Abstract

Chickpea is susceptible to fungal infection and mycotoxin contamination. Argentina exports most of its chickpea production; thus, its quality is of concern. The fungal genus was found to be prevalent in chickpea samples from Argentina. The species within this genus are able to produce mycotoxins, such as alternariol (AOH), alternariol monomethyl ether (AME), and tenuazonic acid (TA). In this context, we evaluated the effect of water activity (0.99, 0.98, 0.96, 0.95, 0.94, 0.92, and 0.90 a), temperature (4, 15, 25, and 30 °C), incubation time (7, 14, 21, and 28 days), and their interactions on mycelial growth and AOH, AME, and TA production on chickpea-based medium by two strains and one strain isolated from chickpea in Argentina. Maximum growth rates were obtained at the highest a (0.99) and 25 °C, with growth decreasing as the a of the medium and the temperature were reduced. grew significantly faster than . Mycotoxin production was affected by both variables (a and temperature), and the pattern obtained was dependent on the strains/species evaluated. In general, both strains produced maximum amounts of AOH and AME at 30 °C and 0.99-0.98 a, while for TA production, both strains behaved completely differently (maximum levels at 25 °C and 0.96 a for one strain and 30 °C and 0.98 a for the other). produced maximum amounts of the three toxins at 25 °C and 0.98 a. Temperature and a conditions for mycotoxin production were slightly narrower than those for growth. Temperature and a conditions assayed are those found during chickpea grain development in the field, and also could be present during storage. This study provides useful data on the conditions representing a risk for contamination of chickpea by toxins.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10144695PMC
http://dx.doi.org/10.3390/pathogens12040565DOI Listing

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