Laboratorio de Biología Funcional y Biotecnología (BIOLAB)-INBIOTEC-CONICET-UNCPBA-CICBA, Facultad de Agronomía, Buenos Aires, Argentina.
Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, UBA, Buenos Aires, Argentina.
J Sci Food Agric. 2020 May;100(7):3182-3191. doi: 10.1002/jsfa.10354. Epub 2020 Mar 13.
Barley is one of the most sown crops in the world, with multiple uses such as human consumption, animal feed and for the malting industry. This crop is affected by different diseases, such as Fusarium Head Blight (FHB), that causes losses in yield and quality. In the last years F. graminearum and F. poae were two of the most frequently isolated species in barley grains, so the aim of this study was to evaluate the interaction between these Fusarium species and the effects on disease parameters, grain quality and mycotoxin contamination on five barley genotypes under field conditions.
Statistical differences between Fusarium treatments for some parameters depending mainly on the year/genotype were found. The results showed that the germination process was affected by both Fusarium species. As to grain quality and the different hordein fractions, it was observed that F. graminearum affects preferentially D and C-hordeins. Different concentrations of nivalenol, deoxynivalenol and their acetylated derivatives (3-acetyl deoxynivalenol (3-ADON), 15-acetyl deoxynivalenol (15-ADON)) were detected.
In the present work, no evidence of synergism between F. graminearum and F. poae were found regarding disease parameters and mycotoxin contamination. However, at least in the years with favorable climatic conditions to FHB development and depending on the barley genotype, a continuous monitoring is deemed necessary to prevent the negative impact on protein composition and germinative parameters © 2020 Society of Chemical Industry.
大麦是世界上播种量最大的作物之一，具有人类食用、动物饲料和麦芽工业等多种用途。这种作物受到多种病害的影响，如赤霉病（FHB），会导致产量和质量损失。近年来，禾谷镰刀菌（F. graminearum）和禾谷镰刀菌（F. poae）是大麦籽粒中最常分离到的两种物种，因此本研究旨在评估这两种镰刀菌之间的相互作用及其对 5 个大麦基因型在田间条件下的病害参数、谷物品质和霉菌毒素污染的影响。
根据年份/基因型的不同，发现赤霉病处理之间在一些参数上存在统计学差异。结果表明，这两种镰刀菌都影响了发芽过程。至于谷物品质和不同的麦醇溶蛋白，观察到禾谷镰刀菌优先影响 D 和 C-麦醇溶蛋白。检测到不同浓度的雪腐镰刀菌烯醇、脱氧雪腐镰刀菌烯醇及其乙酰化衍生物（3-乙酰脱氧雪腐镰刀菌烯醇（3-ADON）、15-乙酰脱氧雪腐镰刀菌烯醇（15-ADON））。
在本工作中，未发现禾谷镰刀菌和禾谷镰刀菌之间在病害参数和霉菌毒素污染方面存在协同作用。然而，至少在有利于赤霉病发生的气候条件下，并且取决于大麦基因型，需要进行持续监测，以防止对蛋白质组成和发芽参数产生负面影响。 © 2020 化学工业协会。
