Differential reactions of wheat and pea genotypes to root inoculation with growth-affecting rhizosphere bacteria

Åström, Boel; Gerhardson, B.

doi:10.1007/bf02202093

Cited by 67 publications

(27 citation statements)

References 23 publications

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“…BAC-JAG4, which reduced fungal growth in the three culture media tested and did not yield symptoms of wilt or rot, are consistent with previous studies reporting that S. liquefaciens, S. plymuthica and S. rubidaea showed in vitro antifungal activity against different fungal pathogens ( Kalbe et al, 1996). In particular, isolates of S. plymuthica have been used as biocontrol agents against Verticillium dahliae, Rhizoctonia solani and F. oxysporum in wheat, oats, cucumber, corn, canola and potato (Åström and Gerhardson, 1988;Kloepper et al, 1992;Kalbe et al, 1996;Berg, 2000;Frankowski et al, 2001;Ting et al, 2011).…”

Section: Discussionsupporting

confidence: 90%

Vanilla Rhizobacteria as Antagonists against Fusarium oxysporum f. sp. vanillae

Adame-García

Luna-Rodríguez

Iglesias-Andreu

2015

IJAB

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Pathogens such as Fusarium oxysporum strongly affect the health of various agricultural crops like vanilla. However, despite significant economic losses caused by this pathogen there is no efficient method for its control. Therefore, we propose using rhizobacteria obtained from vanilla roots against F. oxysporum f. sp. vanillae. The results showed that there was no positive correlation between the antagonism expressed under in vitro conditions and those expressed under greenhouse conditions. The 16S rDNA gene analysis indicated that the bacterial genera tested corresponded to Sphingobacterium, Staphylococcus, Serratia, Psychrobacter, Pseudomonas and Stenotrophomonas. The in vitro antifungal activity was evaluated using three culture media (Potato Dextrose Agar, Nutrient Agar and Czapek) using the empty box technique (antagonism). Isolates of Staphylococcus xylosus BAC-JAG15, Serratia sp. BAC-JAG4 and Stenotrophomonas sp. BAC-JAG1 showed 90% in vitro antagonism against F. oxysporum in the three media tested. In the greenhouse evaluation, plants treated with these isolates initially showed symptoms of chlorosis without developing characteristic symptoms of disease produced by F. oxysporum f. sp. vanillae. This demonstrates protection provided by rhizobacteria against infection from F. oxysporum f. sp. vanillae in vanilla plants.

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Section: Discussionsupporting

confidence: 90%

Vanilla Rhizobacteria as Antagonists against Fusarium oxysporum f. sp. vanillae

Adame-García

Luna-Rodríguez

Iglesias-Andreu

2015

IJAB

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“…The host-selective effect of P. kilonensis/brassicacearum on Echinochloa crus-galli may have been caused by a combination of several factors [6]. First of all, the host plant must be recognized by the bacterium.…”

Section: Discussionmentioning

confidence: 99%

“…For example, a particular Pseudomonas isolate caused a large reduction in the growth of some Pisum sativum cultivars but had no effect on other cultivars or on wheat [6]. Host-plant selectivity might also be involved in a long known agricultural phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Host-Plant Selectivity of Rhizobacteria in a Crop/Weed Model System

2007

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Belowground microorganisms are known to influence plants' performance by altering the soil environment. Plant pathogens such as cyanide-producing strains of the rhizobacterium Pseudomonas may show strong host-plant selectivity. We analyzed interactions between different host plants and Pseudomonas strains and tested if these can be linked to the cyanide sensitivity of host plants, the cyanide production of bacterial strains or the plant identity from which strains had been isolated. Eight strains (four cyanide producing) were isolated from roots of four weed species and then re-inoculated on the four weed and two additional crop species. Bacterial strain composition varied strongly among the four weed species. Although all six plant species showed different reductions in root growth when cyanide was artificially applied to seedlings, they were generally not negatively affected by inoculation with cyanide-producing bacterial strains. We found a highly significant plant species x bacterial strain interaction. Partitioning this interaction into contrasts showed that it was entirely due to a strongly negative effect of a bacterial strain (Pseudomonas kilonensis/brassicacearum, isolated from Galium mollugo) on Echinochloa crus-galli. This exotic weed may not have become adapted to the bacterial strain isolated from a native weed. Our findings suggest that host-specific rhizobacteria hold some promise as biological weed-control agents.

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“…[27] The activation of germination caused by the culture filtrates of each of the five Aureobacterium strains (Aur 2, Aur 3, Aur 6, Aur 9, and Aur 11) and Cell 1 is indicative of the presence of active metabolites. To our knowledge, Aureobacterium has not been reported as enhancing germination; however, these bacterial genera have never been encountered as the dominant genera in the rhizosphere of any other plant species.…”

Section: Marcel Dekker Inc • 270 Madison Avenue • New York Ny 10016mentioning

confidence: 99%

Effects of Culture Filtrates of Rhizobacteria Isolated from Wild Lupine on Germination, Growth, and Biological Nitrogen Fixation of Lupine Seedlings

Mañero

Probanza

Ramos

et al. 2003

Journal of Plant Nutrition

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In order to select potential Plant Growth Promoting Rhizobacteria (PGPRs), a selection of strains from the predominant genera in the rhizosphere of four lupine species, based on genetic divergence criteria, carried out in a previous study, yielded 11 Aureobacterium (Aur), four Cellulomonas (Cell), two Arthrobacter (Arth), two Pseudomonas (Ps), and six Bacillus (Bc) strains. Cell-free culture filtrates of each bacterium were assayed for effects on germination, growth, and biological nitrogen

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Differential reactions of wheat and pea genotypes to root inoculation with growth-affecting rhizosphere bacteria

Cited by 67 publications

References 23 publications

Vanilla Rhizobacteria as Antagonists against Fusarium oxysporum f. sp. vanillae

Vanilla Rhizobacteria as Antagonists against Fusarium oxysporum f. sp. vanillae

Host-Plant Selectivity of Rhizobacteria in a Crop/Weed Model System

Effects of Culture Filtrates of Rhizobacteria Isolated from Wild Lupine on Germination, Growth, and Biological Nitrogen Fixation of Lupine Seedlings

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