During surveys conducted from 2015 to 2018 in stone fruit orchards of East Azerbaijan province in the northwest of Iran, several stone fruit trees showing phytoplasma typical symptoms such as witches'-broom, little leaf, leaf rolling, leaf scorching, dieback, decline, yellowing, reddening and rosette were sampled. PCR and nested PCR analyses using phytoplasma universal primers confirmed the phytoplasma infection in some of symptomatic almond, peach, plum and sweet cherry trees. Sequence analyses of some 485 bp and 1239 bp 16S–23S rDNA fragments amplified in nested PCR, confirmed that ʻCandidatus Phytoplasma asterisʼ, ʻCa. Phytoplasma aurantifoliaʼ and ʻCa. Phytoplasma phoeniciumʼ were associated with almond, ʻCa. Phytoplasma phoeniciumʼ was associated with peach, ʻCa. Phytoplasma asterisʼ and ʻCa. Phytoplasma trifoliiʼ were associated with plum and ʻCa. Phytoplasma asterisʼ was associated with sweet cherry trees. Virtual RFLP analyses indicated that stone fruit phytoplasmas in East Azerbaijan are belonging to 16SrI–B, 16SrII-A, 16SrIX-C, 16SrXII-A and 16SrVI-A subgroups. This research is the first report of infection by ʻCa. Phytoplasma asterisʼ in almond and infection by ʻCa. Phytoplasma trifolliʼ in plum around the world and the first report of ʻCa. Phytoplasma aurantifoliaʼ and ʻCa. Phytoplasma trifoliiʼ presence in the northwest of Iran.

在2015年至2018年对伊朗西北部阿塞拜疆省果核果园进行的调查中，数种果核果树表现出植物质体的典型症状，如巫婆扫帚，小叶子，叶子滚动，叶子焦白，枯萎，衰退，变黄，变红和玫瑰花结被采样。使用植物原质通用引物的PCR和巢式PCR分析证实了一些有症状的杏仁，桃，李子和甜樱桃树中的植物原质感染。巢式PCR扩增了约485 bp和1239 bp的16S–23S rDNA片段的序列分析，证实了“ Candidatus Phytoplasma asteris”，“ Ca”。植原体和Ca。植原体phoeniciumʼ与杏仁“ Ca”有关。植原体phoeniciumʼ与桃（Ca）有关。紫水晶疫病菌和`Ca. Trifoliiʼ与李子和“ Ca”有关。紫花病与甜樱桃树有关。虚拟RFLP分析表明，阿塞拜疆东部的核果果浆原虫属于16SrI-B，16SrII-A，16SrIX-C，16SrXII-A和16SrVI-A亚组。这项研究是ʻCa感染的第一份报告。杏仁中的植物枯萎病菌和“ Ca”感染。全世界李子中的Phytoplasma trifolliʼ和Ca的首次报道。植原体和Ca。伊朗西北部的植原体。