ABSTRACT Species of Septoria are commonly associated with leaf spot diseases of a broad range of plant hosts worldwide. During our investigation of fungi associated with leaf spot diseases in northern and northwestern Iran, several Septoria isolates were recovered from symptomatic leaves on different herbaceous and woody plants in the Asteraceae, Betulaceae, and Salicaceae families. These isolates were studied by applying a polyphasic approach including morphological and cultural data and a multigene phylogeny using a combined data set of partial sequences of the 28S nuc rRNA gene (large subunit [28S]), internal transcribed spacer regions and intervening 5.8S nuc rRNA gene (ITS) of the nuc rDNA operon, actin (actA), translation elongation factor 1-α (tef1), calmodulin (cmdA), β-tubulin (tub2), and DNA-directed RNA polymerase II second largest subunit (rpb2). Four novel species are proposed, namely, Septoria eclipticola on Eclipta prostrata, Septoria firouraghina on Cirsium arvense, Septoria guilanensis on Populus deltoides, and Septoria taleshana on Alnus subcordata. All species are illustrated, and their morphology and phylogenetic relationships with other Septoria species are discussed.

中文翻译：

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与伊朗叶斑病相关的新种Septoria

摘要 Septoria 物种通常与全世界范围广泛的植物宿主的叶斑病有关。在我们对伊朗北部和西北部与叶斑病相关的真菌进行调查期间，从菊科、桦木科和杨柳科的不同草本和木本植物的有症状的叶子中回收到了几个分离株。通过应用多相方法研究这些分离株，包括形态学和培养数据以及使用 28S nuc rRNA 基因（大亚基 [28S]）部分序列、内部转录间隔区和干预 5.8S nuc rRNA 的部分序列的组合数据集的多基因系统发育nuc rDNA 操纵子的基因 (ITS)、肌动蛋白 (actA)、翻译延伸因子 1-α (tef1)、钙调蛋白 (cmdA)、β-微管蛋白 (tub2)、和 DNA 指导的 RNA 聚合酶 II 第二大亚基 (rpb2)。提出了四种新物种，即旱莲草上的黄花针茅、紫荆上的花刺虎尾草、三角杨上的桂兰针刺和桤木上的金针刺草(Septoria taleshana)。 介绍了4种新种，分别是Eclipta prostrata上的Septoria eclipticola、Cirsium arvense上的Septoria firouraghina、Populus deltoides上的Septoria guilanensis和Alnus subcordata上的Septoria taleshana。说明了所有物种，并讨论了它们与其他 Septoria 物种的形态和系统发育关系。