scholarly journals Microfluidics: Quantifying the Spatiotemporal Dynamics of Plant Root Colonization by Beneficial Bacteria in a Microfluidic Habitat (Adv. Biosys. 6/2018)

2018 ◽  
Vol 2 (6) ◽  
pp. 1870051 ◽  
Author(s):  
Jayde A. Aufrecht ◽  
Collin M. Timm ◽  
Amber Bible ◽  
Jennifer L. Morrell-Falvey ◽  
Dale A. Pelletier ◽  
...  
Keyword(s):  
Root Colonization ◽  
Plant Root ◽  
Spatiotemporal Dynamics ◽  
Beneficial Bacteria

scholarly journals Quantifying the Spatiotemporal Dynamics of Plant Root Colonization by Beneficial Bacteria in a Microfluidic Habitat

2018 ◽  
Vol 2 (6) ◽  
pp. 1800048 ◽  
Author(s):  
Jayde A. Aufrecht ◽  
Collin M. Timm ◽  
Amber Bible ◽  
Jennifer L. Morrell-Falvey ◽  
Dale A. Pelletier ◽  
...  
Keyword(s):  
Root Colonization ◽  
Plant Root ◽  
Spatiotemporal Dynamics ◽  
Beneficial Bacteria

scholarly journals Deletion of Rap‐Phr systems in Bacillus subtilis influences in vitro biofilm formation and plant root colonization

2021 ◽  
Vol 10 (3) ◽  
Author(s):  
Mathilde Nordgaard ◽  
Rasmus Møller Rosenbek Mortensen ◽  
Nikolaj Kaae Kirk ◽  
Ramses Gallegos‐Monterrosa ◽  
Ákos T. Kovács
Keyword(s):  
Bacillus Subtilis ◽  
Biofilm Formation ◽  
Root Colonization ◽  
Plant Root

scholarly journals Methods for studying root colonization by introduced beneficial bacteria

Agronomie ◽  
2003 ◽  
Vol 23 (5-6) ◽  
pp. 407-418 ◽  
Author(s):  
Elisa Gamalero ◽  
Guido Lingua ◽  
Graziella Berta ◽  
Philippe Lemanceau
Keyword(s):  
Root Colonization ◽  
Beneficial Bacteria

Competitiveness in root colonization by Pseudomonas putida requires the rpoS gene

2001 ◽  
Vol 47 (1) ◽  
pp. 41-48 ◽  
Author(s):  
Charles D Miller ◽  
Young-Cheol Kim ◽  
Anne J Anderson
Keyword(s):  
Pseudomonas Putida ◽  
Culture Medium ◽  
Wild Type Strain ◽  
Root Colonization ◽  
Plant Root ◽  
Wild Type ◽  
Rpos Gene ◽  
Activated Oxygen ◽  
Increased Sensitivity ◽  
Dose Dependent

The rpoS gene in Pseudomonas putida was essential for plant root colonization under competitive conditions from other microbes. The RpoS- mutant survived less well than the wild-type strain in culture medium, and unlike the wild-type, failed to colonize the roots in a peat matrix containing an established diverse microflora. The RpoS-deficient P. putida isolate was generated by insertion of a glucuronidase-npt cassette into the rpoS gene. The RpoS- mutant had dose-dependent increased sensitivity to oxidative stress and produced Mn-superoxide dismutase activity earlier than the parent. While extracts from wild-type P. putida stationary-phase cells contained three isozymes of catalase (CatA, CatB, and CatC), the σ38-deficient P. putida lacked CatB. These results are consistent with previous findings that CatB is induced in stationary-phase.Key words: catalase, starvation, activated oxygen species.

scholarly journals Trichoderma-Plant Root Colonization: Escaping Early Plant Defense Responses and Activation of the Antioxidant Machinery for Saline Stress Tolerance

2013 ◽  
Vol 9 (3) ◽  
pp. e1003221 ◽  
Author(s):  
Yariv Brotman ◽  
Udi Landau ◽  
Álvaro Cuadros-Inostroza ◽  
Tohge Takayuki ◽  
Alisdair R. Fernie ◽  
...  
Keyword(s):  
Plant Defense ◽  
Stress Tolerance ◽  
Root Colonization ◽  
Plant Root ◽  
Defense Responses ◽  
Saline Stress ◽  
Plant Defense Responses ◽  
Antioxidant Machinery

scholarly journals Identification of Root-Secreted Compounds Involved in the Communication Between Cucumber, the Beneficial Bacillus amyloliquefaciens, and the Soil-Borne Pathogen Fusarium oxysporum

2017 ◽  
Vol 30 (1) ◽  
pp. 53-62 ◽  
Author(s):  
Yunpeng Liu ◽  
Lin Chen ◽  
Gengwei Wu ◽  
Haichao Feng ◽  
Guishan Zhang ◽  
...  
Keyword(s):  
Fusarium Oxysporum ◽  
Root System ◽  
Root Exudates ◽  
Bacillus Amyloliquefaciens ◽  
Root Colonization ◽  
Plant Root ◽  
Root Exudation ◽  
Soil Borne Pathogens ◽  
Split Root System ◽  
Cucumber Roots

Colonization of plant growth–promoting rhizobacteria (PGPR) is critical for exerting their beneficial effects on the plant. Root exudation is a major factor influencing the colonization of both PGPR and soil-borne pathogens within the root system. However, the tripartite interaction of PGPR, plant roots, and soil-borne pathogens is poorly understood. We screened root exudates for signals that mediate tripartite interactions in the rhizosphere. In a split-root system, we found that root colonization of PGPR strain Bacillus amyloliquefaciens SQR9 on cucumber root was significantly enhanced by preinoculation with SQR9 or the soil-borne pathogen Fusarium oxysporum f. sp. cucumerinum, whereas root colonization of F. oxysporum f. sp. cucumerinum was reduced upon preinoculation with SQR9 or F. oxysporum f. sp. cucumerinum. Root exudates from cucumbers preinoculated with SQR9 or F. oxysporum f. sp. cucumerinum were analyzed and 109 compounds were identified. Correlation analysis highlighted eight compounds that significantly correlated with root colonization of SQR9 or F. oxysporum f. sp. cucumerinum. After performing colonization experiments with these chemicals, raffinose and tryptophan were shown to positively affect the root colonization of F. oxysporum f. sp. cucumerinum and SQR9, respectively. These results indicate that cucumber roots colonized by F. oxysporum f. sp. cucumerinum or SQR9 increase root secretion of tryptophan to strengthen further colonization of SQR9. In contrast, these colonized cucumber roots reduce raffinose secretion to inhibit root colonization of F. oxysporum f. sp. cucumerinum.

Sign in / Sign up

Export Citation Format

Share Document