Characterization of plant growth-promoting bacteria associated with avocado trees (Persea americana Miller) and their potential use in the biocontrol of Scirtothrips perseae (avocado thrips)
Plants interact with a great variety of microorganisms that inhabit the rhizosphere or the epiphytic and endophytic phyllosphere and that play critical roles in plant growth as well as the biocontrol of phytopathogens and insect pests. Avocado fruit damage caused by the thrips species Scirtothrips p...
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| creator | Tzec-Interián, Jorge A Desgarennes, Damaris Carrión, Gloria Monribot-Villanueva, Juan L Guerrero-Analco, José A Ferrera-Rodríguez, Ofelia Santos-Rodríguez, Dulce L Liahut-Guin, Nut Caballero-Reyes, Gerardo E Ortiz-Castro, Randy |
| description | Plants interact with a great variety of microorganisms that inhabit the rhizosphere or the epiphytic and endophytic phyllosphere and that play critical roles in plant growth as well as the biocontrol of phytopathogens and insect pests. Avocado fruit damage caused by the thrips species Scirtothrips perseae leads to economic losses of 12-51% in many countries. In this study, a screening of bacteria associated with the rhizosphere or endophytic phyllosphere of avocado roots was performed to identify bacterial isolates with plant growth-promoting activity in vitro assays with Arabidopsis seedlings and to assess the biocontrol activity of the isolates against Scirtothrips perseae. The isolates with beneficial, pathogenic and/or neutral effects on Arabidopsis seedlings were identified. The plant growth-promoting bacteria were clustered in two different groups (G1 and G3B) based on their effects on root architecture and auxin responses, particularly bacteria of the Pseudomonas genus (MRf4-2, MRf4-4 and TRf2-7) and one Serratia sp. (TS3-6). Twenty strains were selected based on their plant growth promotion characteristics to evaluate their potential as thrips biocontrol agents. Analyzing the biocontrol activity of S. perseae, it was identified that Chryseobacterium sp. shows an entomopathogenic effect on avocado thrips survival. Through the metabolic profiling of compounds produced by bacteria with plant growth promotion activity, bioactive cyclodipeptides (CDPs) that could be responsible for the plant growth-promoting activity in Arabidopsis were identified in Pseudomonas, Serratia and Stenotrophomonas. This study unravels the diversity of bacteria from the avocado rhizosphere and highlights the potential of a unique isolate to achieve the biocontrol of S. perseae. |
| doi_str_mv | 10.1371/journal.pone.0231215 |
| format | Article |
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Avocado fruit damage caused by the thrips species Scirtothrips perseae leads to economic losses of 12-51% in many countries. In this study, a screening of bacteria associated with the rhizosphere or endophytic phyllosphere of avocado roots was performed to identify bacterial isolates with plant growth-promoting activity in vitro assays with Arabidopsis seedlings and to assess the biocontrol activity of the isolates against Scirtothrips perseae. The isolates with beneficial, pathogenic and/or neutral effects on Arabidopsis seedlings were identified. The plant growth-promoting bacteria were clustered in two different groups (G1 and G3B) based on their effects on root architecture and auxin responses, particularly bacteria of the Pseudomonas genus (MRf4-2, MRf4-4 and TRf2-7) and one Serratia sp. (TS3-6). Twenty strains were selected based on their plant growth promotion characteristics to evaluate their potential as thrips biocontrol agents. Analyzing the biocontrol activity of S. perseae, it was identified that Chryseobacterium sp. shows an entomopathogenic effect on avocado thrips survival. Through the metabolic profiling of compounds produced by bacteria with plant growth promotion activity, bioactive cyclodipeptides (CDPs) that could be responsible for the plant growth-promoting activity in Arabidopsis were identified in Pseudomonas, Serratia and Stenotrophomonas. This study unravels the diversity of bacteria from the avocado rhizosphere and highlights the potential of a unique isolate to achieve the biocontrol of S. perseae.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0231215</identifier><identifier>PMID: 32267901</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Arabidopsis ; Bacteria ; Biological control ; Biology and Life Sciences ; Deoxyribonucleic acid ; DNA ; Economic impact ; Endophytes ; Fruit trees ; Gene expression ; Insect pests ; Insects ; Medicine and Health Sciences ; Metabolism ; Microorganisms ; Pest control ; Pests ; Phyllosphere ; Phyllosphere microorganisms ; Phylogenetics ; Plant growth ; Profiling ; Promotion ; Pseudomonas ; Research and Analysis Methods ; Rhizosphere ; Rhizosphere microorganisms ; Scirtothrips perseae ; Seedlings ; Serratia ; Telomere-binding protein ; TRF2 protein</subject><ispartof>PloS one, 2020-04, Vol.15 (4), p.e0231215-e0231215</ispartof><rights>2020 Tzec-Interián et al. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 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This study unravels the diversity of bacteria from the avocado rhizosphere and highlights the potential of a unique isolate to achieve the biocontrol of S. perseae.</description><subject>Arabidopsis</subject><subject>Bacteria</subject><subject>Biological control</subject><subject>Biology and Life Sciences</subject><subject>Deoxyribonucleic acid</subject><subject>DNA</subject><subject>Economic impact</subject><subject>Endophytes</subject><subject>Fruit trees</subject><subject>Gene expression</subject><subject>Insect pests</subject><subject>Insects</subject><subject>Medicine and Health Sciences</subject><subject>Metabolism</subject><subject>Microorganisms</subject><subject>Pest control</subject><subject>Pests</subject><subject>Phyllosphere</subject><subject>Phyllosphere microorganisms</subject><subject>Phylogenetics</subject><subject>Plant growth</subject><subject>Profiling</subject><subject>Promotion</subject><subject>Pseudomonas</subject><subject>Research and Analysis 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Avocado fruit damage caused by the thrips species Scirtothrips perseae leads to economic losses of 12-51% in many countries. In this study, a screening of bacteria associated with the rhizosphere or endophytic phyllosphere of avocado roots was performed to identify bacterial isolates with plant growth-promoting activity in vitro assays with Arabidopsis seedlings and to assess the biocontrol activity of the isolates against Scirtothrips perseae. The isolates with beneficial, pathogenic and/or neutral effects on Arabidopsis seedlings were identified. The plant growth-promoting bacteria were clustered in two different groups (G1 and G3B) based on their effects on root architecture and auxin responses, particularly bacteria of the Pseudomonas genus (MRf4-2, MRf4-4 and TRf2-7) and one Serratia sp. (TS3-6). Twenty strains were selected based on their plant growth promotion characteristics to evaluate their potential as thrips biocontrol agents. Analyzing the biocontrol activity of S. perseae, it was identified that Chryseobacterium sp. shows an entomopathogenic effect on avocado thrips survival. Through the metabolic profiling of compounds produced by bacteria with plant growth promotion activity, bioactive cyclodipeptides (CDPs) that could be responsible for the plant growth-promoting activity in Arabidopsis were identified in Pseudomonas, Serratia and Stenotrophomonas. This study unravels the diversity of bacteria from the avocado rhizosphere and highlights the potential of a unique isolate to achieve the biocontrol of S. perseae.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>32267901</pmid><doi>10.1371/journal.pone.0231215</doi><orcidid>https://orcid.org/0000-0002-6026-8311</orcidid><oa>free_for_read</oa></addata></record> |
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| issn | 1932-6203 1932-6203 |
| language | eng |
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| source | DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Public Library of Science (PLoS); PubMed Central; Free Full-Text Journals in Chemistry |
| subjects | Arabidopsis Bacteria Biological control Biology and Life Sciences Deoxyribonucleic acid DNA Economic impact Endophytes Fruit trees Gene expression Insect pests Insects Medicine and Health Sciences Metabolism Microorganisms Pest control Pests Phyllosphere Phyllosphere microorganisms Phylogenetics Plant growth Profiling Promotion Pseudomonas Research and Analysis Methods Rhizosphere Rhizosphere microorganisms Scirtothrips perseae Seedlings Serratia Telomere-binding protein TRF2 protein |
| title | Characterization of plant growth-promoting bacteria associated with avocado trees (Persea americana Miller) and their potential use in the biocontrol of Scirtothrips perseae (avocado thrips) |
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