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Triticum varieties grown as ‘ancient grains’ in New York differ in susceptibility to Fusarium head blight and harbor diverse Fusarium flora
European Journal of Plant Pathology ( IF 1.7 ) Pub Date : 2021-01-14 , DOI: 10.1007/s10658-020-02183-7
Michael R. Fulcher , James B. Winans , David Benscher , Mark E. Sorrells , Gary C. Bergstrom

Fusarium head blight (FHB) of Triticum spp. is caused by diverse, mycotoxigenic members of the genus Fusarium. In New York, United States, Fusarium graminearum is considered the primary FHB incitant on common wheat (Triticum aestivum), but there is no record of the Fusarium spp. colonizing wheat crops marketed as high value ‘ancient grains’ (T. dicoccum, T. spelta, and T. monococcum). The incidence and severity of FHB on these crops was recorded at variety trials in 2017 and 2018, and a brief survey of the Fusarium flora associated with symptomatic spikes was conducted at these trials and an additional research site in 2018. A significant difference in mean incidence and severity was observed between crop varieties in 2017, suggesting that partial varietal resistance will contribute to successful FHB management in New York ‘ancient grain’ crops. The survey of Fusarium flora associated with symptomatic tissue recorded seven species or species complexes, based on colony morphology and DNA sequence homology. Fusarium acuminatum, F. avenaceum, the F. graminearum species complex, the F. incarnatum-equiseti species complex, F. poae and F. sporotrichioides have been linked previously to FHB in wheat, while F. armeniacum had not been associated with FHB symptomatic wheat spikes prior to this study. The diversity of Fusarium species recovered raises the concern that mycotoxins which are not routinely tested for may be found in high-value Triticum crops grown in New York.



中文翻译:

在纽约作为“古代谷物”种植的小麦品种对镰刀菌病的敏感性不同,并具有多种镰刀菌属菌群

小麦Triticum spp )的镰刀菌枯萎病(FHB)。由镰刀菌属的多种致毒毒素成员引起在美国纽约州,镰刀菌被认为是普通小麦(Triticum aestivum)的主要FHB诱因,但没有镰刀菌的记录。殖麦类作物销售作为高值“古晶粒”(T. dicoccumT.斯卑尔脱,和T.一粒)。这些农作物中FHB的发生率和严重程度在2017年和2018年的品种试验中以及对镰刀菌的简要调查中均已记录在这些试验和2018年的另外一个研究地点进行了与症状性峰值相关的菌群研究。2017年在农作物品种之间观察到平均发生率和严重程度存在显着差异,这表明部分品种抗性将有助于成功地控制纽约州的FHB谷物作物。根据菌落形态和DNA序列同源性,对与症状组织相关的镰刀菌菌群的调查记录了七个物种或物种复合体。镰刀尖锐湿疣F. avenaceum,在禾谷镰刀菌物种复杂,F. incarnatum,木贼品种繁杂,F. poaeF. sporotrichioides以前,这种现象与小麦中的FHB有关,而在这项研究之前,亚美尼亚F.并没有与FHB有症状的小麦峰值相关联。回收的镰刀菌物种的多样性引起了人们的担忧,即未经常规检测的霉菌毒素可能会在纽约种植的高价值小麦作物中发现。

更新日期:2021-01-14
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