Bashiri Samaneh, Abdollahzadeh Jafar
Department of Plant Protection, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran.
Front Plant Sci. 2024 Apr 18;15:1377441. doi: 10.3389/fpls.2024.1377441. eCollection 2024.
Oak decline is a complex disorder that seriously threatens the survival of Zagros forests. In an extensive study on taxonomy and pathology of fungi associated with oak decline in the central and northern part of Zagros forests, 462 fungal isolates were obtained from oak trees showing canker, gummosis, dieback, defoliation, and partial or total death symptoms. Based on inter-simple sequence repeat (ISSR) fingerprinting patterns, morphological characteristics, and sequences of ribosomal DNA (28S rDNA and ITS) and protein coding loci (, , , , , , and ), 24 fungal species corresponding to 19 genera were characterized. Forty percent of the isolates were placed in eight coelomycetous species from seven genera, namely, , , , , , , and . Of these, four species are new to science, which are introduced here as taxonomic novelties: sp. nov., sp. nov., sp. nov., and sp. nov. According to pathogenicity trials on leaves and stems of 2-year-old Persian oak () seedlings, spp. (, , and ), , and were recognized as nonpathogenic. All coelomycetous species were determined as pathogenic in both pathogenicity trials on leaves and seedling stems, of which sp. nov., , and were recognized as the most virulent species followed by .
栎树衰退是一种复杂的病症,严重威胁着扎格罗斯森林的生存。在一项关于扎格罗斯森林中部和北部与栎树衰退相关真菌的分类学和病理学的广泛研究中,从表现出溃疡、流胶病、枯枝病、落叶以及部分或全部死亡症状的栎树上获得了462个真菌分离株。基于简单重复序列区间(ISSR)指纹图谱模式、形态特征以及核糖体DNA(28S rDNA和ITS)和蛋白质编码基因座(……)的序列,鉴定出了对应19个属的24种真菌。40%的分离株属于来自7个属的8种腔孢纲真菌,即……。其中,有4个物种是科学上新发现的,在此作为分类学新物种进行介绍:……新种、……新种、……新种和……新种。根据对2年生波斯栎()幼苗叶片和茎的致病性试验,……种(……、……和……)、……和……被认定为非致病性。在对叶片和幼苗茎的致病性试验中,所有腔孢纲真菌物种都被确定为致病性,其中……新种、……和……被认为是毒性最强的物种,其次是……