中文摘要：镰刀菌是一类极具破坏性的真菌，其成员能引起动植物及人体多种疾病。再者，许多镰刀菌能分泌对人畜有毒的霉菌毒素（如单端孢霉烯及伏马菌素）。本研究从沙特阿拉伯七个地区表现病害症状如黄化、坏死及白化的海枣树采集镰刀菌株，单孢分离培养后对菌株进行了形态表征。
外文摘要：Fusarium is one of the most destructive fungal genera whose members cause many diseases on plants, animals, and humans. Moreover, many Fusarium species secrete mycotoxins (e.g. trichothecenes and fumonisins) that are toxic to humans and animals. Fusarium isolates from date palm trees showing disease symptoms, e.g. chlorosis, necrosis and whitening, were collected from seven regions across Saudi Arabia. After single-sporing, the fungal strains were morphologically characterized. To confirm the identity of morphologically characterized Fusarium strains, three nuclear loci, two partial genes of translation elongation factor 1 α (tef1α) and β-tubulin (tub2), and the rDNA-ITS region, were amplified and sequenced. Of the 70 Fusarium strains, 70 % were identified as F. proliferatum that were recovered from six regions across Saudi Arabia. Fusarium solani (13 %), as well as one strain each of the following species: F. brachygibbosum, F. oxysporum, and F. verticillioides were also recovered. In addition, five Fusarium-like strains were recognized as Sarocladium kiliense by DNA-based data. The preliminary in vitro pathogenicity results showed that F. proliferatum had the highest colonization abilities on date palm leaflets, followed by F. solani. Although F. oxysporum f. sp. albedinis is the most serious date palm pathogen, F. proliferatum and F. solani are becoming serious pathogens and efforts should be made to restrict and control them. In addition, the potential toxin risks of strains belonging to F. proliferatum should be evaluated.
外文关键词：Date palm；Fusarium proliferatum；Fusarium solani；DNA-based data
作者：Saleh, AA；Sharafaddin, AH；El Komy, MH；Ibrahim, YE；Hamad, YK；Molan, YY
作者单位：King Saud Univ
期刊名称：EUROPEAN JOURNAL OF PLANT PATHOLOGY
期刊影响因子：1.495
出版年份：2017
出版刊次：2
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