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Singh N, Phukan T, Sharma PL, Kabyashree K, Barman A, Kumar R, Sonti RV, Genin S, Ray SK. An Innovative Root Inoculation Method to Study Ralstonia solanacearum Pathogenicity in Tomato Seedlings. Phytopathology 2018; 108:436-442. [PMID: 29182472 DOI: 10.1094/phyto-08-17-0291-r] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this study, we report Ralstonia solanacearum pathogenicity in the early stages of tomato seedlings by an innovative root inoculation method. Pathogenicity assays were performed under gnotobiotic conditions in microfuge tubes by employing only 6- to 7-day-old tomato seedlings for root inoculation. Tomato seedlings inoculated by this method exhibited the wilted symptom within 48 h and the virulence assay can be completed in 2 weeks. Colonization of the wilted seedlings by R. solanacearum was confirmed by using gus staining as well as fluorescence microscopy. Using this method, mutants in different virulence genes such as hrpB, phcA, and pilT could be clearly distinguished from wild-type R. solanacearum. The method described here is economic in terms of space, labor, and cost as well as the required quantity of bacterial inoculum. Thus, the newly developed assay is an easy and useful approach for investigating virulence functions of the pathogen at the seedling stage of hosts, and infection under these conditions appears to require pathogenicity mechanisms used by the pathogen for infection of adult plants.
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Affiliation(s)
- N Singh
- First, second, third, fourth, fifth, sixth, and ninth authors: Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India; seventh author: Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500007, Andhra Pradesh, India; and eighth author: LIPM, Université de Toulouse, INRA, CNRS, F-31326 Castanet-Tolosan, France
| | - T Phukan
- First, second, third, fourth, fifth, sixth, and ninth authors: Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India; seventh author: Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500007, Andhra Pradesh, India; and eighth author: LIPM, Université de Toulouse, INRA, CNRS, F-31326 Castanet-Tolosan, France
| | - P L Sharma
- First, second, third, fourth, fifth, sixth, and ninth authors: Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India; seventh author: Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500007, Andhra Pradesh, India; and eighth author: LIPM, Université de Toulouse, INRA, CNRS, F-31326 Castanet-Tolosan, France
| | - K Kabyashree
- First, second, third, fourth, fifth, sixth, and ninth authors: Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India; seventh author: Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500007, Andhra Pradesh, India; and eighth author: LIPM, Université de Toulouse, INRA, CNRS, F-31326 Castanet-Tolosan, France
| | - A Barman
- First, second, third, fourth, fifth, sixth, and ninth authors: Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India; seventh author: Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500007, Andhra Pradesh, India; and eighth author: LIPM, Université de Toulouse, INRA, CNRS, F-31326 Castanet-Tolosan, France
| | - R Kumar
- First, second, third, fourth, fifth, sixth, and ninth authors: Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India; seventh author: Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500007, Andhra Pradesh, India; and eighth author: LIPM, Université de Toulouse, INRA, CNRS, F-31326 Castanet-Tolosan, France
| | - R V Sonti
- First, second, third, fourth, fifth, sixth, and ninth authors: Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India; seventh author: Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500007, Andhra Pradesh, India; and eighth author: LIPM, Université de Toulouse, INRA, CNRS, F-31326 Castanet-Tolosan, France
| | - S Genin
- First, second, third, fourth, fifth, sixth, and ninth authors: Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India; seventh author: Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500007, Andhra Pradesh, India; and eighth author: LIPM, Université de Toulouse, INRA, CNRS, F-31326 Castanet-Tolosan, France
| | - S K Ray
- First, second, third, fourth, fifth, sixth, and ninth authors: Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India; seventh author: Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500007, Andhra Pradesh, India; and eighth author: LIPM, Université de Toulouse, INRA, CNRS, F-31326 Castanet-Tolosan, France
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Kageji T, Kuwayama K, Kitazato KT, Mure H, Hara K, Morigaki R, Matsuzaki K, Nakajima K, Nagahiro S, Kumala S, Heravi M, Devic S, Muanza T, Nelson SK, Knubel KH, Pernu BM, Pierce AM, Keating AK, Neuwelt A, Nguyen T, Wu YJ, Donson A, Vibhakar R, Venkatamaran S, Amani V, Neuwelt E, Rapkin L, Foreman N, Ibrahim F, New P, Cui K, Zhao H, Chow D, Stephen W, Nozue-Okada K, Nagane M, McDonald KL, Ogawa D, Chiocca E, Godlewski J, Ozawa T, Yoshida Y, Santos R, James D, Pang M, Liu X, Madhankumar AB, Slagle-Webb B, Patel A, Miller P, Connor J, Pasupuleti N, Gorin F, Valenzuela A, Leon L, Carraway K, Ramachandran C, Nair S, Quirrin KW, Khatib Z, Escalon E, Melnick S, Phillips A, Boghaert E, Vaidya K, Ansell P, Shalinsky D, Zhang Y, Voorbach M, Mudd S, Holen K, Humerickhouse R, Reilly E, Huang T, Parab S, Diago O, Espinoza FL, Martin B, Ibanez C, Kasahara N, Gruber H, Pertschuk D, Jolly D, Robbins J, Ryken T, Agarwal S, Al-Keilani M, Alqudah M, Sibenaller Z, Assemolt M, Sai K, Li WY, Li WP, Chen ZP, 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Gruber HE, Robbins JM, Jolly DJ, Kasahara N, Warren K, McCully C, Bacher J, Thomas T, Murphy R, Steffen-Smith E, McAllister R, Pastakia D, Widemann B, Wei K, Yang H, Huang C, Chen P, Hua M, Liu H, Woolf EC, Abdelwahab MG, Fenton KE, Liu Q, Turner G, Preul MC, Scheck AC, Yoshida Y, Ozawa T, Butowski N, Shen W, Brown D, Pedersen H, James D, Zhang J, Hariono S, Yao TW, Sidhu A, Hashizume R, James CD, Weiss WA, Nicolaides TP, Olusanya T. EXPERIMENTAL THERAPEUTICS AND PHARMACOLOGY. Neuro Oncol 2013; 15:iii37-iii61. [PMCID: PMC3823891 DOI: 10.1093/neuonc/not176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023] Open
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