Plant Pathogenicity Phenotyping of Ralstonia solanacearum Strains

0106 biological sciences 0301 basic medicine Nicotiana [SDV.BIO]Life Sciences [q-bio]/Biotechnology Arabidopsis thaliana Phenotyping on plants 01 natural sciences Plant Roots Tomato [SDV.BV.BOT] Life Sciences [q-bio]/Vegetal Biology/Botanics [SDV.GEN.GPL]Life Sciences [q-bio]/Genetics/Plants genetics 03 medical and health sciences Solanum lycopersicum In planta bacterial growth measurements [SDV.GEN.GPL] Life Sciences [q-bio]/Genetics/Plants genetics Medicago truncatula Nicotiana benthamiana [SDV.BV]Life Sciences [q-bio]/Vegetal Biology [SDV.BV] Life Sciences [q-bio]/Vegetal Biology [SDV.MP] Life Sciences [q-bio]/Microbiology and Parasitology Plant Diseases 580 2. Zero hunger Plant Stems [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics [SDV.BIO] Life Sciences [q-bio]/Biotechnology [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology Phenotype Ralstonia solanacearum
DOI: 10.1007/978-1-4939-7604-1_18 Publication Date: 2017-12-29T10:12:30Z
ABSTRACT
In this chapter, we describe different methods for phenotyping strains or mutants of the bacterial wilt agent, Ralstonia solanacearum, on four different host plants: Arabidopsis thaliana, tomato (Solanum lycopersicum), tobacco (Nicotiana benthamiana), or Medicago truncatula. Methods for preparation of high volume or low volume inocula are first described. Then, we describe the procedures for inoculation of plants by soil drenching, stem injection or leaf infiltration, and scoring of the wilting symptoms development. Two methods for measurement of bacterial multiplication in planta are also proposed: (1) counting the bacterial colonies upon serial dilution plating and (2) determining the bacterial concentration using a qPCR approach. In this chapter, we also describe a competitive index assay to compare the fitness of two strains coinoculated in the same plant. Lastly, specific protocols describe in vitro and hydroponic inoculation procedures to follow disease development and bacterial multiplication in both the roots and aerial parts of the plant.
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