Responses of Bean to Root Colonization With<i>Pseudomonas putida</i>in a Hydroponic System

Aj, Anderson; Guerra, Diosdada Gálvez

doi:10.1094/phyto-75-992

Cited by 77 publications

(26 citation statements)

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“…There were several studies investigating colonisation of bean root by Pseudomonas strains in non saline conditions (Anderson and Guerra 1985, Zdor and Anderson 1992, Miller et al 2001). Our bacterial strains were able to colonize in the rhizosphere of bean at the highest saline condition (12.5 dS/m).…”

Section: Resultsmentioning

confidence: 99%

Survival of Pseudomonas extremorientalis TSAU20 and P. chlororaphis TSAU13 in the rhizosphere of common bean (Phaseolus vulgaris) under saline conditions

Egamberdieva¹

2011

Plant Soil Environ.

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The abilities of Pseudomonas extremorientalis TSAU20 and P. chlororaphis TSAU13 to colonise and survive in the rhizosphere of common bean under saline conditions were studied. Four salinity levels (5.0, 7.5, 10.0, and 12.5 dS/m) were maintained in the gnotobiotic system using NaCl salt. Results showed that with increasing salt content root-tip colonization of both bacterial strains was reduced. Both bacterial treatments used in the study intcreased root and/or shoot length compared to non-treated plants at each NaCl concentration tested, whereas shoot growth was not stimulated at high saline condition (12.5 dS/m). In conclusion, the results of this study indicated that P. extremorientalis TSAU20 and P. chlororaphis TSAU 13 have the ability to survive in ecologically stressed conditions, such as saline and nitrogen deficient soils, and may positively effect on plant growth of bean. High saslinity inhibited their colonisation in the rhizosphere of bean and thus their stimulatory effect on plants was also reduced.

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Section: Resultsmentioning

confidence: 99%

Survival of Pseudomonas extremorientalis TSAU20 and P. chlororaphis TSAU13 in the rhizosphere of common bean (Phaseolus vulgaris) under saline conditions

Egamberdieva¹

2011

Plant Soil Environ.

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“…The study found a relatively higher quantity of lignification (30 -100% over control) in the bacterized roots compared to the untreated plants. Anderson and Guerra (1985) observed lignification of cell walls in beans upon seed treatment with PGPRs. Pseudomonas fluorescens, WCS 417r-mediated ISR, in carnation was reported to be associated with Potentiation of phytoalexin accumulation resulting in higher phytoalexin levels after infection by the fungal pathogen Fusarium oxysporum f. sp.…”

Section: Discussionmentioning

confidence: 91%

“…A massive accumulation of phytoalexin (van Peer et al 1991), phenolic compounds (M'Piga et al 1997 increase in the activities of PR proteins (Maurhofer et al 1994), peroxidase (Albert & Anderson 1987, Zdor & Anderson 1992 increase in the levels of mRNAs encoding phenyl alanine ammonia lyase (PAL) and enhanced lignification (Anderson & Guerra 1985) have been reported in plants following treatments with PGPR strains. However, there is not much study about the induction of various defence enzymes involved in the phenyl propanoid pathway due to Pseudomonas fluorescens treatment.…”

Section: Introductionmentioning

confidence: 99%

Pseudomonas fluorescensmediated systemic resistance in black pepper (Piper nigrumL.) is driven through an elevated synthesis of defence enzymes

Paul¹,

Sarma²

2005

Archives Of Phytopathology And Plant Protection

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Efficient strains of Pseudomonas fluorescens identified were evaluated for their efficacy in inducing defence enzymes in black pepper. Increased levels of Peroxidase (PO), Catalase, Phenylalanine Ammonia Lyase (PAL) and Poly Phenol Oxidase (PPO) were induced in leaves apart from the roots of treated plants indicating the systemic protection offered to black pepper by the strains exploring the prevention of even foliar infection by the pathogen, Phytophthora capsici. The increase in production of defence enzymes upon challenge were higher in the non-bacterized plants compared to the bacterized plants, indicating the lesser requirement of defence enzymes in the bacterized plants upon encounter with the pathogen. Also found was a relatively higher quantity of lignification (30 -100% over control) in the bacterized roots compared to the plants untreated which resulted in significant root rot suppression.

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“…Bean roots bacterized with a saprophytic fl uorescent pseudomonad had higher lignin content than control (Anderson and Guerra 1985 ). Treatment of PGPR signifi cantly reduced the germination of sporangia and zoospores of Phytophthora infestans on the leaf surface of tomato than the leaves of the non-induced control.…”

Section: Structural and Ultrastructural Cell Wall Modifi Cations In Tmentioning

confidence: 97%

Mechanisms of Biocontrol

Reddy

2014

Plant Growth Promoting Rhizobacteria for Horticultural Crop Protection

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Responses of Bean to Root Colonization WithPseudomonas putidain a Hydroponic System

Cited by 77 publications

References 0 publications

Survival of Pseudomonas extremorientalis TSAU20 and P. chlororaphis TSAU13 in the rhizosphere of common bean (Phaseolus vulgaris) under saline conditions

Survival of Pseudomonas extremorientalis TSAU20 and P. chlororaphis TSAU13 in the rhizosphere of common bean (Phaseolus vulgaris) under saline conditions

Pseudomonas fluorescensmediated systemic resistance in black pepper (Piper nigrumL.) is driven through an elevated synthesis of defence enzymes

Mechanisms of Biocontrol

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