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Publication Type J
Authors Palacio-Rodriguez, R; Coria-Arellano, JL; Lopez-Bucio, J; Sanchez-Salas, J; Muro-Perez, G; Castaneda-Gaytan, G; Saenz-Mata, J
Author Full Name Palacio-Rodriguez, Ruben; Lizbeth Coria-Arellano, Jessica; Lopez-Bucio, Jose; Sanchez-Salas, Jaime; Muro-Perez, Gisela; Castaneda-Gaytan, Gamaliel; Saenz-Mata, Jorge
Title Halophilic rhizobacteria from Distichlis spicata promote growth and improve salt tolerance in heterologous plant hosts
Source SYMBIOSIS
Language English
Document Type Article
Author Keywords Salt stress; Halophilic rhizobacteria; Distichlis spicata; Bacillus; Pseudomonas; Phytostimulation
Keywords Plus ACC DEAMINASE; ARABIDOPSIS-THALIANA; PHYLOGENETIC TREES; STRESS TOLERANCE; ROOT DEVELOPMENT; SALINITY STRESS; BACTERIA; SOIL; INOCULATION; RHIZOSPHERE
Abstract Rhizobacteria are central components of the plant microbiome and influence root development and function. Desciphering how rhizobacteria contribute to plant performance under adverse environments is a major research challenge. The aims of the present study were to isolate and characterize rhizobacteria from the halophilic grass Distichlis spicata and to test their possible growth promoting and salt protective properties in Arabidopsis thaliana, Cucumis sativus, and Citrullus lanatus. To determine their possible plant growth promoting properties, 38 rhizobacterial isolates were co-cultivated with Arabidopsis seedlings in vitro. Out of these, two halophilic bacteria, LBEndo1 and KBEcto4, were selected following their strong shoot and root biostimulation. 16S rRNA sequencing identified LBEndo1 as Bacillus sp. and KBEcto4 as Pseudomonas lini. Both strains improved growth under standard and saline conditions, which correlated with IAA and siderophore production, as well as phosphate solubilization. Additionally, the KBEcto4 strain expresses the ACC deaminase enzyme (acdS gene), and slightly increases auxin redistribution within Arabidopsis roots expressing an auxin-inducible gene construct. These data reveal the potential of saltgrass (Distichlis spicata) rhizobacteria to promote growth and confer salt tolerance to Arabidopsis and crop plants.
Author Address [Palacio-Rodriguez, Ruben; Lizbeth Coria-Arellano, Jessica; Sanchez-Salas, Jaime; Muro-Perez, Gisela; Castaneda-Gaytan, Gamaliel; Saenz-Mata, Jorge] Univ Juarez Estado Durango, Fac Ciencias Biol, Av Univ S-N, Gomez Palacio 35010, Durango, Mexico; [Lopez-Bucio, Jose] Univ Michoacana, Inst Invest Quim Biol, Edificio B3,Ciudad Univ, Morelia 58030, Michoacan, Mexico
Reprint Address Saenz-Mata, J (reprint author), Univ Juarez Estado Durango, Fac Ciencias Biol, Av Univ S-N, Gomez Palacio 35010, Durango, Mexico.
E-mail Address jsaenz_mata@ujed.mx
ORCID Number Castaneda, Gamaliel/0000-0002-1896-0937
Funding Agency and Grant Number PRODEP-SEP [DSA/103.5/15/3004]
Funding Text We thank Alexander Czaja and Jose Luis Estrada Rodriguez for his kind invitation to sample the
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Cited Reference Count 69
Publisher SPRINGER
Publisher City DORDRECHT
Publisher Address VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
ISSN 0334-5114
29-Character Source Abbreviation SYMBIOSIS
ISO Source Abbreviation Symbiosis
Publication Date NOV
Year Published 2017
Volume 73
Issue 3
Beginning Page 179
Ending Page 189
Digital Object Identifier (DOI) 10.1007/s13199-017-0481-8
Subject Category 11
Document Delivery Number Microbiology
Unique Article Identifier Microbiology
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