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Multilocus sequence typing reveals two distinct populations of "Candidatus Phytoplasma sacchari" in China

文献类型： 外文期刊

作者： Zhang, Rong-Yue 1 ; Wang, Xiao-Yan 2 ; Shan, Hong-Li 2 ; Li, Jie 2 ; Li, Yin-Hu 2 ; Li, Wen-Feng 2 ; He, Xia-Hong 1 ; Huang, Ying-Kun 2 ;

作者机构： 1.Yunnan Agr Univ, State Key Lab Conservat & Utilizat Bio Resources Y, Kunming 650201, Peoples R China

2.Yunnan Acad Agr Sci, Sugarcane Res Inst, Yunnan Key Lab Sugarcane Genet Improvement, Kaiyuan 661699, Peoples R China

3.Southwest Forestry Univ, Sch Landscape & Hort, Kunming 650233, Peoples R China

关键词： Sugarcane white leaf; Phytoplasma; Genetic diversity; Population structure

期刊名称：TROPICAL PLANT PATHOLOGY （ 影响因子：2.5； 五年影响因子：2.2 ）

ISSN： 1983-2052

年卷期： 2023 年 48 卷 2 期

页码：

收录情况： SCI

摘要： Sugarcane white leaf (SCWL), associated with the presence of "Candidatus Phytoplasma sacchari," is a devastating disease. In this study, a multilocus sequence typing (MLST) scheme based on seven housekeeping genes (dnaK, tuf, secY, gyrB, secA, recA, and hflB) was applied to examine the genetic diversity and population structure of "Ca. P. sacchari." Using this MLST scheme, 87 "Ca. P. sacchari" infected sugarcane samples from Yunnan province, China, were analyzed, and two sequence types (STs) were identified. ST1 is the most widely distributed and is the main ST, whereas ST2 is only found in the Baoshan area in China. Analysis of the population structure showed that the ST1 and ST2 "Ca. P. sacchari" were the different populations. The nucleotide diversity of the seven housekeeping genes ranged from 0 to 0.00268, indicating that the genetic diversity of "Ca. P. sacchari" in China is very low. The MLST scheme developed offers researchers a valuable typing tool for epidemiology and diversity studies of "Ca. P. sacchari."

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