Growth Kinetic Parameters and Prediction of Growth and Zearalenone and Deoxynivalenol Production Boundaries by Three Fusarium asiaticum Strains Isolated from Wheat
Growth Kinetic Parameters and Prediction of Growth and Zearalenone and Deoxynivalenol Production Boundaries by Three Fusarium asiaticum Strains Isolated from Wheat
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DOI：
10.3390/fermentation8110577
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发表时间：
2022-11-01
影响因子：
3.7
通讯作者：
Magan, Naresh
中科院分区：
文献类型：
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作者：
Garcia-Cela, Esther;Verheecke-Vaessen, Carol;Magan, Naresh
镰刀菌可在世界范围内引起谷物的头疫病。这还伴随着对产量的影响和真菌毒素对谷物的污染。对相关的镰刀菌毒素（如A型和B型毛霉烯、玉米赤霉烯酮和伏马菌素）已有规定，规定了最高限度。人们有兴趣更好地了解决定小粒谷物定殖和霉菌毒素产生的关键相互作用的非生物因素的影响。因此，本研究考察了温度和水分有效性（10-35℃，水活度，a(w), 0.87-0.98）对三株亚洲镰刀菌镰刀菌毒素（zearelenone， ZEA；脱氧雪腐镰刀菌醇，DON； 3-乙酰脱氧雪腐镰刀菌醇，3-Ac-DON和雪腐镰刀菌醇，NIV）生长和产生的生态生理关系。亚洲镰刀菌是一种分离自中国的头疫病病原体，在全球其他地区越来越重要。这些试验在模拟小麦基质上进行，确定了所有三种菌株生长的最佳条件（25℃/0.98 a(w)）和边际边界条件（35℃/0.90 a(w)）。相反，菌株之间的霉菌毒素生成谱不同（p < 0.05）。评估的四种真菌毒素在30℃下产生，而低温抑制了NIV和ZEA的产生，这两种毒素在高温下从未检测到
Fusarium species can cause head blight of cereals worldwide. This is accompanied by impacts on yield and contamination of grains with mycotoxins. Regulations, with maximum limits, exist for the relevant Fusarium mycotoxins (e.g., type A and B trichothecenes, zearalenone and fumonisins). There is interest in a better understanding of the effect of key interacting abiotic factors which determine colonization and mycotoxin production in small grain cereals. Thus, this study examined the ecophysiological relationship between temperature and water availability (10-35 degrees C; water activity, a(w), 0.87-0.98) on growth and production of Fusarium mycotoxins (zearelenone, ZEA; deoxynivalenol, DON; 3-acetyl deoxynivalenol, 3-Ac-DON and nivalenol, NIV) by three strains of F. asiaticum, a head blight pathogen isolated from China and becoming important in other global regions. These were carried out on simulated wheat-based matrices that identified the optimum (25 degrees C/0.98 a(w)) and marginal boundary conditions for growth (35 degrees C/0.90 a(w)) for all three strains. Contrarily, different mycotoxigenic profiles were observed between strains (p < 0.05). Four mycotoxins assessed were produced at 30 degrees C while cold temperature inhibited the production of NIV and ZEA, which were never detected at