Details
| Original language | English |
|---|---|
| Pages (from-to) | 769-779 |
| Number of pages | 11 |
| Journal | MYCORRHIZA |
| Volume | 26 |
| Issue number | 7 |
| Early online date | 4 Jun 2016 |
| Publication status | Published - Oct 2016 |
Abstract
Sixty-four native bacterial colonies were isolated from mycorrhizal roots of Helianthemum almeriense colonized by Terfezia claveryi, mycorrhizosphere soil, and peridium of T. claveryi to evaluate their effect on mycorrhizal plant production. Based on the phylogenetic analysis of the 16S rDNA partial sequence, 45 different strains from 17 genera were gathered. The largest genera were Pseudomonas (40.8 % of the isolated strains), Bacillus (12.2 % of isolated strains), and Varivorax (8.2 % of isolated strains). All the bacteria were characterized phenotypically and by their plant growth-promoting rhizobacteria (PGPR) traits (auxin and siderophore production, phosphate solubilization, and ACC deaminase activity). Only bacterial combinations with several PGPR traits or Pseudomonas sp. strain 5, which presents three different PGPR traits, had a positive effect on plant survival and growth. Particularly relevant were the bacterial treatments involving auxin release, which significantly increased the root-shoot ratio and mycorrhizal colonization. Moreover, Pseudomonas mandelii strain 29 was able to considerably increase mycorrhizal colonization but not plant growth, and could be considered as mycorrhiza-helper bacteria. Therefore, the mycorrhizal roots, mycorrhizosphere soil, and peridium of desert truffles are environments enriched in bacteria which may be used to increase the survival and mycorrhization in the desert truffle plant production system at a semi-industrial scale.
Keywords
- Cistaceae, Desert truffle, Mycorrhiza, Mycorrhiza-helper bacteria (MHB), Plant growth-promoting rhizobacteria (PGPR), Terfezia
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Ecology, Evolution, Behavior and Systematics
- Biochemistry, Genetics and Molecular Biology(all)
- Molecular Biology
- Biochemistry, Genetics and Molecular Biology(all)
- Genetics
- Agricultural and Biological Sciences(all)
- Plant Science
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In: MYCORRHIZA, Vol. 26, No. 7, 10.2016, p. 769-779.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Beneficial native bacteria improve survival and mycorrhization of desert truffle mycorrhizal plants in nursery conditions
AU - Navarro-Ródenas, Alfonso
AU - Berná, Luis Miguel
AU - Lozano-Carrillo, Cecilia
AU - Andrino, Alberto
AU - Morte, Asunción
N1 - Funding information: This work was supported by project CGL2011-29816 (MINECO-FEDER, Spain) and project 19484/PI/14 (FEDER-Programa de Apoyo a la Investigación de la Fundación Séneca-Agencia de Ciencia y Tecnología de la Región de Murcia, Spain). A. Navarro-Ródenas is grateful to MINECO for a postdoctoral Torres-Quevedo contract PTQ-12-05818. The authors thank JJ Bordallo for his help with DNA sequence identification and Dr. J. Zwiazek for his helpful comments on the manuscript.
PY - 2016/10
Y1 - 2016/10
N2 - Sixty-four native bacterial colonies were isolated from mycorrhizal roots of Helianthemum almeriense colonized by Terfezia claveryi, mycorrhizosphere soil, and peridium of T. claveryi to evaluate their effect on mycorrhizal plant production. Based on the phylogenetic analysis of the 16S rDNA partial sequence, 45 different strains from 17 genera were gathered. The largest genera were Pseudomonas (40.8 % of the isolated strains), Bacillus (12.2 % of isolated strains), and Varivorax (8.2 % of isolated strains). All the bacteria were characterized phenotypically and by their plant growth-promoting rhizobacteria (PGPR) traits (auxin and siderophore production, phosphate solubilization, and ACC deaminase activity). Only bacterial combinations with several PGPR traits or Pseudomonas sp. strain 5, which presents three different PGPR traits, had a positive effect on plant survival and growth. Particularly relevant were the bacterial treatments involving auxin release, which significantly increased the root-shoot ratio and mycorrhizal colonization. Moreover, Pseudomonas mandelii strain 29 was able to considerably increase mycorrhizal colonization but not plant growth, and could be considered as mycorrhiza-helper bacteria. Therefore, the mycorrhizal roots, mycorrhizosphere soil, and peridium of desert truffles are environments enriched in bacteria which may be used to increase the survival and mycorrhization in the desert truffle plant production system at a semi-industrial scale.
AB - Sixty-four native bacterial colonies were isolated from mycorrhizal roots of Helianthemum almeriense colonized by Terfezia claveryi, mycorrhizosphere soil, and peridium of T. claveryi to evaluate their effect on mycorrhizal plant production. Based on the phylogenetic analysis of the 16S rDNA partial sequence, 45 different strains from 17 genera were gathered. The largest genera were Pseudomonas (40.8 % of the isolated strains), Bacillus (12.2 % of isolated strains), and Varivorax (8.2 % of isolated strains). All the bacteria were characterized phenotypically and by their plant growth-promoting rhizobacteria (PGPR) traits (auxin and siderophore production, phosphate solubilization, and ACC deaminase activity). Only bacterial combinations with several PGPR traits or Pseudomonas sp. strain 5, which presents three different PGPR traits, had a positive effect on plant survival and growth. Particularly relevant were the bacterial treatments involving auxin release, which significantly increased the root-shoot ratio and mycorrhizal colonization. Moreover, Pseudomonas mandelii strain 29 was able to considerably increase mycorrhizal colonization but not plant growth, and could be considered as mycorrhiza-helper bacteria. Therefore, the mycorrhizal roots, mycorrhizosphere soil, and peridium of desert truffles are environments enriched in bacteria which may be used to increase the survival and mycorrhization in the desert truffle plant production system at a semi-industrial scale.
KW - Cistaceae
KW - Desert truffle
KW - Mycorrhiza
KW - Mycorrhiza-helper bacteria (MHB)
KW - Plant growth-promoting rhizobacteria (PGPR)
KW - Terfezia
UR - http://www.scopus.com/inward/record.url?scp=84988493275&partnerID=8YFLogxK
U2 - 10.1007/s00572-016-0711-6
DO - 10.1007/s00572-016-0711-6
M3 - Article
C2 - 27262434
AN - SCOPUS:84988493275
VL - 26
SP - 769
EP - 779
JO - MYCORRHIZA
JF - MYCORRHIZA
SN - 0940-6360
IS - 7
ER -