Evaluation of Barley and Wheat Germplasm for Resistance to Head Blight and Mycotoxin Production by Fusarium asiaticum and F. graminearum.

IF 1.8 3区 农林科学 Q2 PLANT SCIENCES Plant Pathology Journal Pub Date : 2022-12-01 DOI:10.5423/PPJ.OA.09.2022.0130
Seul Gi Baek, Jin Ju Park, Sosoo Kim, Mi-Jeong Lee, Ji-Seon Paek, Jangnam Choi, Ja Yeong Jang, Jeomsoon Kim, Theresa Lee
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Abstract

Fusarium head blight (FHB) is one of the most serious diseases in barley and wheat, as it is usually accompanied by the production of harmful mycotoxins in the grains. To identify FHB-resistant breeding resources, we evaluated 60 elite germplasm accessions of barley (24) and wheat (36) for FHB and mycotoxin accumulation. Assessments were performed in a greenhouse and five heads per accession were inoculated with both Fusarium asiaticum (Fa73, nivalenol producer) and F. graminearum (Fg39, deoxynivalenol producer) strains. While the accessions varied in disease severity and mycotoxin production, four wheat and one barley showed <20% FHB severity repeatedly by both strains. Mycotoxin levels in these accessions ranged up to 3.9 mg/kg. FHB severity was generally higher in barley than in wheat, and Fa73 was more aggressive in both crops than Fg39. Fg39 itself, however, was more aggressive toward wheat and produced more mycotoxin in wheat than in barley. FHB severity by Fa73 and Fg39 were moderately correlated in both crops (r = 0.57/0.60 in barley and 0.42/0.58 in wheat). FHB severity and toxin production were also correlated in both crops, with a stronger correlation for Fa73 (r = 0.42/0.82 in barley, 0.70 in wheat) than for Fg39.

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大麦和小麦种质抗白疫病及亚洲镰刀菌和谷草镰刀菌产生霉菌毒素的评价。
小麦赤霉病(Fusarium head blight, FHB)是大麦和小麦最严重的病害之一,因为它通常伴随着谷物中有害真菌毒素的产生。为了鉴定抗FHB育种资源,我们对60份大麦(24份)和小麦(36份)的优质种质进行了FHB和霉菌毒素积累的评估。在温室中进行评估,每次接种5株亚洲镰刀菌(Fa73,产雪腐镰刀菌醇)和禾谷镰刀菌(Fg39,脱氧雪腐镰刀菌醇)。虽然各品种在病害严重程度和霉菌毒素产量方面存在差异,但有4种小麦和1种大麦表现出这种差异
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来源期刊
Plant Pathology Journal
Plant Pathology Journal 生物-植物科学
CiteScore
4.90
自引率
4.30%
发文量
71
审稿时长
12 months
期刊介绍: Information not localized
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