文献类型： 外文期刊

作者： Gao Rui ¹ ; Wang Jie ³ ; Zhu Tiansheng ⁴ ; Jia Xi ⁵ ; Li Xiangdong ² ;

作者机构： 1.Shandong Acad Agr Sci, Inst Plant Protect, Jinan 250100, Shandong, Peoples R China

2.Shandong Agr Univ, Coll Plant Protect, Dept Plant Pathol, Tai An 271018, Shandong, Peoples R China

3.Shandong Inst Pomol, Tai An 271000, Shandong, Peoples R China

4.Tarim Univ, Coll Plant Sci & Technol, Alar 843300, Xinjiang, Peoples R China

5.Shandong Acad Agr Sci, Inst Maize, Jinan 250100, Shandong, Peoples R China

期刊名称：HORTICULTURAL PLANT JOURNAL （ 影响因子：3.032； ）

ISSN： 2095-9885

年卷期： 2018 年 4 卷 1 期

页码：

收录情况： SCI

摘要： To confirm phytoplasma infection, samples of pomegranate (Punica granatum L.) plants showing symptoms of fasciation were collected from an orchard located in Tai'an, Shandong Province, China. A fragment of approximately 1.2 kb was amplified with universal primers targeting the phytoplasma 16S rRNA gene from symptomatic pomegranate plants, while no fragment was obtained from healthy plants. The phytoplasma associated with the disease was designated as pomegranate fasciation (PoF). Two representative phytoplasma 16S rDNA gene sequences (PoF- Ch01 and PoF-Ch02) had 100% nucleotide sequence identity. The 16S rDNA sequence of PoF-Ch01 and PoF-Ch02 showed the highest similarity (99.6%) to that of 'P. granatum' phytoplasma isolate AY-PG, which belong to 16SrI-B. Further phylogenetic analysis showed that PoF-Ch01 and PoF- Ch02 belonged to a cluster of 16SrI subgroup members. In silico RFLP analysis indicated that PoF-Ch01 shared the highest similarity coefficient of 0.97 with reference strains of 16SrI-B, M and N. Actual RFLP analysis of both enzymes BstUI and BfaI confirmed that of the virtual RFLP analysis. Combining these results, we concluded that PoF was a member of the 'Candidatus Phytoplasma asteris' group (16SrI), and has very close relationship with 16SrI-B subgroup.