Rhizosphere Colonization Determinants by Plant Growth-Promoting Rhizobacteria (PGPR)
The application of plant growth-promoting rhizobacteria (PGPR) in the field has been hampered by a number of gaps in the knowledge of the mechanisms that improve plant growth, health, and production. These gaps include (i) the ability of PGPR to colonize the rhizosphere of plants and (ii) the abilit...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-05-01
|
| Series: | Biology |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-7737/10/6/475 |
| _version_ | 1797532408864571392 |
|---|---|
| author | Gustavo Santoyo Carlos Alberto Urtis-Flores Pedro Damián Loeza-Lara Ma. del Carmen Orozco-Mosqueda Bernard R. Glick |
| author_facet | Gustavo Santoyo Carlos Alberto Urtis-Flores Pedro Damián Loeza-Lara Ma. del Carmen Orozco-Mosqueda Bernard R. Glick |
| author_sort | Gustavo Santoyo |
| collection | DOAJ |
| description | The application of plant growth-promoting rhizobacteria (PGPR) in the field has been hampered by a number of gaps in the knowledge of the mechanisms that improve plant growth, health, and production. These gaps include (i) the ability of PGPR to colonize the rhizosphere of plants and (ii) the ability of bacterial strains to thrive under different environmental conditions. In this review, different strategies of PGPR to colonize the rhizosphere of host plants are summarized and the advantages of having highly competitive strains are discussed. Some mechanisms exhibited by PGPR to colonize the rhizosphere include recognition of chemical signals and nutrients from root exudates, antioxidant activities, biofilm production, bacterial motility, as well as efficient evasion and suppression of the plant immune system. Moreover, many PGPR contain secretion systems and produce antimicrobial compounds, such as antibiotics, volatile organic compounds, and lytic enzymes that enable them to restrict the growth of potentially phytopathogenic microorganisms. Finally, the ability of PGPR to compete and successfully colonize the rhizosphere should be considered in the development and application of bioinoculants. |
| first_indexed | 2024-03-10T10:58:45Z |
| format | Article |
| id | doaj.art-9e21bc27159f499c8dd78c364720be34 |
| institution | Directory Open Access Journal |
| issn | 2079-7737 |
| language | English |
| last_indexed | 2024-03-10T10:58:45Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biology |
| spelling | doaj.art-9e21bc27159f499c8dd78c364720be342023-11-21T21:40:00ZengMDPI AGBiology2079-77372021-05-0110647510.3390/biology10060475Rhizosphere Colonization Determinants by Plant Growth-Promoting Rhizobacteria (PGPR)Gustavo Santoyo0Carlos Alberto Urtis-Flores1Pedro Damián Loeza-Lara2Ma. del Carmen Orozco-Mosqueda3Bernard R. Glick4Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, MexicoInstituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, MexicoLicenciatura en Genómica Alimentaria, Universidad de La Ciénega del Estado de Michoacán de Ocampo, Sahuayo 59103, MexicoFacultad de Agrobiología “Presidente Juárez”, Universidad Michoacana de San Nicolás de Hidalgo, Melchor Ocampo, Uruapan 60170, MexicoDepartment of Biology, University of Waterloo, Waterloo, ON N2L 3G1, CanadaThe application of plant growth-promoting rhizobacteria (PGPR) in the field has been hampered by a number of gaps in the knowledge of the mechanisms that improve plant growth, health, and production. These gaps include (i) the ability of PGPR to colonize the rhizosphere of plants and (ii) the ability of bacterial strains to thrive under different environmental conditions. In this review, different strategies of PGPR to colonize the rhizosphere of host plants are summarized and the advantages of having highly competitive strains are discussed. Some mechanisms exhibited by PGPR to colonize the rhizosphere include recognition of chemical signals and nutrients from root exudates, antioxidant activities, biofilm production, bacterial motility, as well as efficient evasion and suppression of the plant immune system. Moreover, many PGPR contain secretion systems and produce antimicrobial compounds, such as antibiotics, volatile organic compounds, and lytic enzymes that enable them to restrict the growth of potentially phytopathogenic microorganisms. Finally, the ability of PGPR to compete and successfully colonize the rhizosphere should be considered in the development and application of bioinoculants.https://www.mdpi.com/2079-7737/10/6/475rhizospherebiocontrolbioinoculantssustainable agriculture |
| spellingShingle | Gustavo Santoyo Carlos Alberto Urtis-Flores Pedro Damián Loeza-Lara Ma. del Carmen Orozco-Mosqueda Bernard R. Glick Rhizosphere Colonization Determinants by Plant Growth-Promoting Rhizobacteria (PGPR) Biology rhizosphere biocontrol bioinoculants sustainable agriculture |
| title | Rhizosphere Colonization Determinants by Plant Growth-Promoting Rhizobacteria (PGPR) |
| title_full | Rhizosphere Colonization Determinants by Plant Growth-Promoting Rhizobacteria (PGPR) |
| title_fullStr | Rhizosphere Colonization Determinants by Plant Growth-Promoting Rhizobacteria (PGPR) |
| title_full_unstemmed | Rhizosphere Colonization Determinants by Plant Growth-Promoting Rhizobacteria (PGPR) |
| title_short | Rhizosphere Colonization Determinants by Plant Growth-Promoting Rhizobacteria (PGPR) |
| title_sort | rhizosphere colonization determinants by plant growth promoting rhizobacteria pgpr |
| topic | rhizosphere biocontrol bioinoculants sustainable agriculture |
| url | https://www.mdpi.com/2079-7737/10/6/475 |
| work_keys_str_mv | AT gustavosantoyo rhizospherecolonizationdeterminantsbyplantgrowthpromotingrhizobacteriapgpr AT carlosalbertourtisflores rhizospherecolonizationdeterminantsbyplantgrowthpromotingrhizobacteriapgpr AT pedrodamianloezalara rhizospherecolonizationdeterminantsbyplantgrowthpromotingrhizobacteriapgpr AT madelcarmenorozcomosqueda rhizospherecolonizationdeterminantsbyplantgrowthpromotingrhizobacteriapgpr AT bernardrglick rhizospherecolonizationdeterminantsbyplantgrowthpromotingrhizobacteriapgpr |