伊朗牧草药用植物中的 Xenodidymella 新物种。

IF 1.8 3区 生物学 Q4 MICROBIOLOGY
Maryam Karimi, Mehdi Mehrabi-Koushki, Reza Farokhinejad, Siamak Beigi
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引用次数: 0

摘要

Xenodidymella 菌种的宿主范围很广,可作为病原体和病菌发现。本研究从伊朗西部伊拉姆省的三种牧草药用植物的叶片病害中发现了两个 Xenodidymella 新种,并将其命名为 X. ilamica 和 X. scandicis spp.这些物种是根据形态特征以及内部转录间隔区 1 和 2 和 5.8S nrDNA(ITS)、部分 beta-tubulin基因(tub2)和部分 RNA 聚合酶 II 第二大亚基(rpb2)基因的系统发育分析确定的。本研究分离的四株 Xenodidymella 菌株被分为两个姊妹支系,其中两株 X. ilamica 分离自 Colchicum speciosum 和 Ficaria kochii 的叶斑病,两株 X. scandicis 分离自 Scandix pecten-veneris的叶枯病。从形态上看,X. scandicis 在体外能产生较大的、具骨架或多孔的菌核,而 X. ilamica 培养物中的菌核没有骨架且较小。在 X. scandicis 的老培养物中,一些菌核会产生颈部,但在 X. ilamica 中还没有观察到明显的颈部。此外,研究中的三种植物是 Xenodidymella 属的新宿主。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Additional new species of Xenodidymella from pasture-medicinal plants in Iran

Additional new species of Xenodidymella from pasture-medicinal plants in Iran

Additional new species of Xenodidymella from pasture-medicinal plants in Iran

Xenodidymella species have a wide range of hosts and can be found as pathogens and saprobes. In this study, two new species of Xenodidymella were found from leaf diseases of three pasture-medicinal plants in Ilam Province, in the west of Iran, and proposed here as X. ilamica and X. scandicis spp. nov. These species were identified based on morphological features and phylogenetic analyses of the internal transcribed spacer regions 1 & 2 and 5.8S nrDNA (ITS), partial beta-tubulin gene (tub2), and partial RNA polymerase II second largest subunit (rpb2) gene. The four Xenodidymella strains isolated in this study were delimited into two sister clades, with the two isolates of X. ilamica from the leaf spot of Colchicum speciosum and Ficaria kochii and two isolates of X. scandicis from leaf blight of Scandix pecten-veneris. Morphologically, X. scandicis produces larger, ostiolate or poroid pycnidia in vitro, while pycnidia in the cultures of X. ilamica are non-ostiolate and smaller. Some pycnidia in old cultures of X. scandicis produce a neck, but a distinct neck in X. ilamica has not been observed. Moreover, three plants under study are new hosts for the genus Xenodidymella.

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来源期刊
CiteScore
5.60
自引率
11.50%
发文量
104
审稿时长
3 months
期刊介绍: Antonie van Leeuwenhoek publishes papers on fundamental and applied aspects of microbiology. Topics of particular interest include: taxonomy, structure & development; biochemistry & molecular biology; physiology & metabolic studies; genetics; ecological studies; especially molecular ecology; marine microbiology; medical microbiology; molecular biological aspects of microbial pathogenesis and bioinformatics.
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