Pseudomonas putida BP25 alters root phenotype and triggers salicylic acid signaling as a feedback loop in regulating endophytic colonization in Arabidopsis thaliana |
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| Institution: | 1. Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi-110012, India;2. Division of Crop Protection, ICAR-Indian Institute of Spices Research, Kozhikode-673012, India;3. Department of Life Sciences, Singhania University, Pacheri Bari, Jhunjhunu-333515, Rajasthan, India;4. Department of Biosciences, Managalore University, Mangalagangothri, Mangalore–574199, India;1. Department of BT-convergent Pharmaceutical Engineering, SunMoon University, #100, Kalsan-ri, Tangjeong-myeon, Asansi, Chungnam 31460, Republic of Korea;2. Korea Polar Research Institute (KOPRI), 213-3, Songdo-dong, Yeonsu-gu, Incheon 21990, Republic of Korea;1. Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN 47907, USA;2. Shanghai Center for Plant Stress Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China;1. University of Marburg, Internal Medicine – Pneumology, Marburg, Germany;1. State Key Laboratory Breeding Base of Marine Genetic Resource, Third Institute of Oceanography, SOA, Xiamen 361005, China;2. Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Xiamen 361005, China;1. Biodiversity Research Center, Academia Sinica, Taipei 115, Taiwan;2. Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 300, Taiwan;3. Bioinformatics Program, Taiwan International Graduate Program, Institute of Information Science, Academia Sinica, Taipei 115, Taiwan;4. Biotechnology Center, National Chung-Hsing Unviersity, Taichung 40227, Taiwan;5. Institute of Bioagricultural Science, National Chiayi University, Chiayi 600, Taiwan;6. Institute of Plant and Microbial Biology, Academia Sinica, Taipei 115, Taiwan;7. School of Biological Sciences, Washington State University, Pullman, WA 99164, USA;8. Department of Ecology and Evolution, University of Chicago, Chicago 60637, USA |
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| Abstract: | Endophytic Pseudomonas putida BP25 (PpBP25) triggered density dependent alterations on Arabidopsis thaliana Col-0 growth. Endogenous colonization of PpBP25 was found regulated within Arabidopsis that caused induction and repression of 131 and 74 plant genes, respectively. Induced genes like WRKY33, AtRLP19, ATL2, ATEXO70B2, pEARLI, RPS2, CBP60G, PLA2, CRK18, ATFBS1, DREB2A, TIR, RAP2.4, and MOS1 were components of defense and salicylic acid (SA) signaling. Development associated genes were found significantly repressed. Biased activation of phytohormone signaling with their associated fitness costs on plant growth was observed. The data suggests that PpBP25 colonization triggered expression of defense genes that restricted its own population in a feedback loop besides causing altered root phenotype. |
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| Keywords: | Endophytic colonization Defense related genes Salicylic acid Differential gene expression Real-Time PCR |
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