Indole-3-acetic acid-regulated genes in<i>Rhizobium etli</i>CNPAF512

Spaepen, Stijn; Das, Frederik; Luyten, Ellen; Michiels, Jan; Vanderleyden, Jos

doi:10.1111/j.1574-6968.2008.01453.x

Cited by 48 publications

(23 citation statements)

References 38 publications

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“…Moreover, IAA triggers an increased tolerance to stress conditions (heat and cold shock, UV-irradiation, osmotic and acid shock and oxidative stress) and toxic compounds (antibiotics, detergents and dyes) [61]. A recent research on Rhizobium etli showed that IAA addition regulates genes involved in plant signal processing, motility and attachment to plant roots, which clearly demonstrating a distinct role for IAA in legume-Rhizobium interactions [62].…”

Section: Indole Derivants Also Involve In Biofilm Formationmentioning

confidence: 98%

Indole Affects Biofilm Formation in Bacteria

Zhang

et al. 2010

Indian J Microbiol

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Biofilm is bacterial population adherent to each other and to surfaces or interfaces, often enclosed by a matrix. Various biomolecules contribute to the establishment of biofilms, yet the process of building a biofilm is still under active investigation. Indole is known as a metabolite of amino acid tryptophan, which, however, has recently been proved to participate in various aspects of bacterial life including virulence induction, cell cycle regulation, acid resistance, and especially, signaling biofilm formation. Moreover, indole is also proposed to be a novel signal involved in quorum sensing, a bacterial cooperation behavior sometimes concerning the biofilm formation. Here the signaling role and molecular mechanism of indole on bacterial biofilm formation are reviewed, as well discussed is its relation to bacterial living adaptivity.

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Section: Indole Derivants Also Involve In Biofilm Formationmentioning

confidence: 98%

Indole Affects Biofilm Formation in Bacteria

Zhang

et al. 2010

Indian J Microbiol

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“…Rhizobia in addition to their intrinsic N 2 -fixing ability also facilitate plant growth by solubilizing soil phosphate (Alikhani et al 2006), producing phytohormones (Spaepen et al 2009), siderophores (Wani et al 2007), exo-polysaccharides ) and ACC-deaminase (Duan et al 2009). A great deal of information concerning the effects of herbicides on rhizobia and legumes is available.…”

Section: Introductionmentioning

confidence: 99%

Growth promotion and protection of lentil (Lens esculenta) against herbicide stress by Rhizobium species

Ahemad

Khan

2010

Ann Microbiol

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This study was designed to recover lentil-specific rhizobial strains tolerant to herbicides (quizalafop-p-ethyl and clodinafop) and synthesizing plant growth regulators even in the presence of herbicide stress. Furthermore, the impact of rhizobial strain was assessed on lentil plants grown in herbicide-treated soils. Quizalafop-p-ethyl-and clodinafoptolerant Rhizobium sp. isolate MRL3 recovered from the nodules of lentil produced plant growth-promoting substances in substantial amount both in the absence and presence of herbicides. In addition, each herbicide at recommended, two and three times the recommended dose adversely affected lentil growth in pot trials. Both herbicides at recommended and higher rate generally decreased biomass, symbiotic properties, nutrients uptake and seed yield of lentil. Interestingly, the herbicide-tolerant Rhizobium isolate MRL3, when used with any concentration of the two herbicides, significantly increased the measured parameters compared to the plants grown in soils treated solely (without inoculant) with the same individual treatment of each herbicide. The present findings suggest that the rhizobial isolate MRL3 endowed with multiple properties could be used to facilitate the productivity of lentil under herbicide-stressed soils.

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“…Auxin regulates the expression of different genes in Rhizobium-legume interaction that involved in plant signal processing and attachment to plant roots. Moreover, changes in auxin balance in host plant are prerequisite for nodule organogenesis (Mathesius et al 1998;Spaepen et al 2009). In the present study, we demonstrated the effect of free living (nonsymbiotic) PGPR on the growth of a leguminous plant, i.e., Vigna radiata (mungbean).…”

Section: Introductionmentioning

confidence: 99%

Rhizobacterial potential to alter auxin content and growth of Vigna radiata (L.)

Ali

Sabri

Hasnain

2010

World J Microbiol Biotechnol

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Potential of non-symbiotic plant growth promoting rhizobacteria (PGPR) to influence the endogenous indole-3-acetic acid (IAA) content and growth of Vigna radiata (L.) was evaluated. The bacterial strains used belonged to Pseudomonas, Escherichia, Micrococcus and Staphylococcus genera. All strains were able to produce IAA (1.16-8.22 lg ml -1 ) in the presence of 1,000 lg ml -1 of L-tryptophan as revealed by gas chromatography and mass spectrometric (GC-MS) analysis. However, strains exhibited variable results for other growth promoting traits such as phosphate solubilization and siderophore or hydrogen cyanide production. Bacterial IAA production showed significant positive correlation with endogenous IAA content of roots (r = 0.969; P = 0.01) and leaves (r = 0.905; P = 0.01) under axenic conditions. Bacterization of V. radiata seeds significantly enhanced shoot length (up to 48.10%) and shoot fresh biomass (up to 43.80%) under fully axenic conditions. Bacterial strains applied under wire-house conditions also improved shoot length, number of pods, and grain weight up to 58, 65, and 17.15% respectively, over control. Hence, free living (nonsymbiotic) PGPR have the ability to influence endogenous IAA content and growth of leguminous plants.

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Indole-3-acetic acid-regulated genes inRhizobium etliCNPAF512

Cited by 48 publications

References 38 publications

Indole Affects Biofilm Formation in Bacteria

Indole Affects Biofilm Formation in Bacteria

Growth promotion and protection of lentil (Lens esculenta) against herbicide stress by Rhizobium species

Rhizobacterial potential to alter auxin content and growth of Vigna radiata (L.)

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