Abstract
Plants are complex biological systems under constant and dynamic interaction with diverse microbial communities which influence their development. The microbial communities associated to plants could possess specific functions on basis on colonized tissue. In crop plants, microbial diversity and their beneficial effects can be affected by plant genotype and farming activities. In this context, we explored biodiversity of Pseudomonas strains isolated from leaves of pepper and lettuce crops, through phylogenetic analysis and physiological profile coupled with specific biochemical tests for plant-microorganism interaction. Bacterial isolates showed genetic and phenotypic diversity despite to be isolated from domestic plant crops. The importance of biodiversity at taxonomic and functional level found in phyllosphere of plant crops and its relationship to achieving sustainability is discussed.
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Abbreviations
- 16S rRNA:
-
(16S ribosomal RNA)
- PGPB:
-
(Plant Growth Promoting Bacteria)
- LOPAT:
-
(Levan production; Oxidase presence; Pectinolytic activity in potatoes; Arginine hydrolase presence; Hypersensitive response in Tobacco)
- BK:
-
(King B medium)
- BLASTn:
-
(Basic Local Alignment Search Tool)
- NCBI:
-
(National Center for Biotechnology Information)
- SINA:
-
(SILVA Incremental Aligner tool)
- MUSCLE:
-
(Multiple Sequence Comparison by Log-Expectation)
- ML:
-
(Maximum likelihood)
- NBRIP:
-
(National Botanical Research Institute’s Phosphate growth medium)
- CAS:
-
(Chrome azurol S)
- IAA:
-
(Indole acetic acid)
- Cmm:
-
(Clavibacter michiganensis subsp. michiganensis)
- TN93 + G:
-
(Tamura-Nei model with a discrete Gamma distribution)
- HR:
-
(Reaction of hypersensitivity)
- BIC:
-
(Bayesian Information Criterion).
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Acknowledgments
This work was funded by Consejo Nacional de Ciencia y Tecnología-Secretaría de Educación Pública (CONACyT-SEP Project 236066), Fondo de Apoyo a la Investigación-UASLP (Project C14-FAI-04-05.05) and Programa de Mejoramiento del Profesorado-Secretaría de Educación Pública (PRODEP-SEP Project DSA/103.5/14/7437). We thank anonymous reviewers for their highly constructive and detailed feedback that helped us improve our manuscript substantially.
Author Contribution Statement
JPLA conceived and designed research. SAMS conducted experiments. SAMS, JMS, GAB, JPLA analyzed data. MRA, RFR, RJG contributed new reagents or analytical tools. SAMS, MRVP, JPLA wrote the paper. All authors read and approved the manuscript.
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The authors declare that they have no conflict of interest.
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Medina-Salazar, S.A., Rodríguez-Aguilar, M., Vallejo-Pérez, M.R. et al. Biodiversity of epiphytic Pseudomonas strains isolated from leaves of pepper and lettuce. Biologia 75, 773–784 (2020). https://doi.org/10.2478/s11756-019-00392-y
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DOI: https://doi.org/10.2478/s11756-019-00392-y