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The physiological characteristics and associated gene expression of sugar cane inoculated with Leifsonia xyli subsp.xyli

文献类型： 外文期刊

作者： Zhu, Kai 1 ; Yuan, Dan 1 ; Zhang, Xiao-Qiu 1 ; Yang, Li-Tao 1 ; Li, Yang-Rui 2 ;

作者机构： 1.Guangxi Univ, Coll Agr, State Key Lab Conservat & Utilizat Subtrop Agrobi, Nanning, Peoples R China

2.Guangxi Acad Agr Sci, Chinese Acad Agr Sci, Key Lab Sugarcane Biotechnol & Genet Improvement, Minist Agr,Guangxi Key Lab Sugarcane Genet Improv, Nanning, Peoples R China

关键词： gene expression;physiological characteristics;ratoon stunt;sugar cane

期刊名称：JOURNAL OF PHYTOPATHOLOGY （ 影响因子：1.789； 五年影响因子：1.574 ）

ISSN： 0931-1785

年卷期： 2018 年 166 卷 1 期

页码：

收录情况： SCI

摘要： Ratoon stunt is a very important disease affecting sugar cane that is caused by the bacterium Leifsonia xyli subsp. xyli (Lxx). We inoculated cuttings of the sugar cane varieties Badila and GT11 with Lxx to investigate the effects of this disease on their growth, physiological characteristics and associated gene differential expression, sampling after 150, 180 and 210days following treatment. In addition, to further explore the colonization of this bacterium at transcription and translation levels, we designed a number of primers from the sequence of an Lxx-specific gene and performed quantitative real-time PCR (qRT-PCR) for Lxx18460 to detect accumulation in plants. Total proteins from diseased plants were detected using Western blotting with an Lxx-specific gene monoclonal antibody. The results of this study show that bacterial levels gradually increased with plant growth following inoculation. Specifically, plant height, stalk diameter, single stalk weight and water potential all decreased as a result of ratoon stunt infection, while membrane permeability and amino acid content increased in Lxx-infected plants compared to the control. The expression of PAL, ZFP and NBS-LRR genes all also increased in plants subject to ratoon stunt stress; this result suggests that these genes are involved in sugar cane responses to Lxx infection.

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