Lu, Yen-TingYen-TingLuLi, Meng-YingMeng-YingLiCheng, Kai-TanKai-TanChengTan, Choon MengChoon MengTanSu, Li-WenLi-WenSuWEI-YI LINShih, Hsien-TzungHsien-TzungShihChiou, Tzyy-JendTzyy-JendChiouYang, Jun-YiJun-YiYang2018-09-102018-09-102014http://www.scopus.com/inward/record.url?eid=2-s2.0-84897667493&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/388125Phytoplasmas have the smallest genome among bacteria and lack many essential genes required for biosynthetic and metabolic functions, making them unculturable, phloem-limited plant pathogens. In this study, we observed that transgenic Arabidopsis (Arabidopsis thaliana) expressing the secreted Aster Yellows phytoplasma strain Witches' Broom protein11 shows an altered root architecture, similarly to the disease symptoms of phytoplasma-infected plants, by forming hairy roots. This morphological change is paralleled by an accumulation of cellular phosphate (Pi) and an increase in the expression levels of Pi starvation-induced genes and microRNAs. In addition to the Pi starvation responses, we found that secreted Aster Yellows phytoplasma strain Witches' Broom protein11 suppresses salicylic acid-mediated defense responses and enhances the growth of a bacterial pathogen. These results contribute to an improved understanding of the role of phytoplasma effector SAP11 and provide new insights for understanding the molecular basis of plant-pathogen interactions. © 2014 American Society of Plant Biologists. All rights reserved.Anthocyanins; Arabidopsis; Bacterial Proteins; Base Sequence; Gene Expression Profiling; Gene Expression Regulation, Plant; Genome, Plant; Homeostasis; Indoleacetic Acids; MicroRNAs; Molecular Sequence Annotation; Molecular Sequence Data; Phenotype; Phosphates; Phytoplasma; Plant Diseases; Plant Growth Regulators; Plant Immunity; Plant Leaves; Plant Roots; Plants, Genetically Modified; Pseudomonas syringae; RNA, Messenger; Signal Transductionanthocyanin; bacterial protein; indoleacetic acid derivative; messenger RNA; microRNA; phosphate; phytohormoneArabidopsis; article; drug effect; gene expression profiling; gene expression regulation; genetics; histology; homeostasis; immunology; metabolism; microbiology; molecular genetics; nucleotide sequence; phenotype; physiology; Phytoplasma; plant disease; plant genome; plant immunity; plant leaf; plant root; Pseudomonas syringae; signal transduction; transgenic plantjournal article10.1104/pp.113.2297402-s2.0-84897667493