A tiny fungus's switch for making a bad toxin
AnAzf1 acts as a positive regulator of ochratoxin A biosynthesis in Aspergillus niger
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Deleting a gene linked to toxin production actually improved antioxidant defenses while crippling energy production.
Typically, reducing a harmful output like toxin production might be expected to free up resources, but here it caused an energy deficit—suggesting AnAzf1 coordinates both stress response and metabolism.
Practical Takeaways
Biotech and fermentation industries could explore targeting AnAzf1 or similar regulators to develop non-toxigenic Aspergillus niger strains for safer enzyme and food additive production.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Deleting a gene linked to toxin production actually improved antioxidant defenses while crippling energy production.
Typically, reducing a harmful output like toxin production might be expected to free up resources, but here it caused an energy deficit—suggesting AnAzf1 coordinates both stress response and metabolism.
Practical Takeaways
Biotech and fermentation industries could explore targeting AnAzf1 or similar regulators to develop non-toxigenic Aspergillus niger strains for safer enzyme and food additive production.
Publication
Journal
Applied Microbiology and Biotechnology
Year
2023
Authors
Sha Wei, Chaojiang Hu, Yige Zhang, Yangyong Lv, Shuaibing Zhang, Huanchen Zhai, Yuan-sen Hu
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Claims (4)
Some fungus used in making enzymes for industry can also make a harmful substance that might cause cancer in people.
When scientists turned off a specific gene called AnAzf1 in a mold called Aspergillus niger, it stopped making a toxin called ochratoxin A in lab tests.
When a specific gene called AnAzf1 is removed in a fungus named Aspergillus niger, it leads to less harmful molecules in the cells, boosts some protective enzymes, and changes how certain genes related to stress and iron control work.
When a specific gene called AnAzf1 is removed in a fungus named Aspergillus niger, its energy production system doesn't work as well — like a battery running low because some parts of the power plant aren't functioning.