2010
DOI: 10.1007/s00425-010-1264-0
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The auxin-signaling pathway is required for the lateral root response of Arabidopsis to the rhizobacterium Phyllobacterium brassicacearum

Abstract: Plant root development is highly responsive both to changes in nitrate availability and beneficial microorganisms in the rhizosphere. We previously showed that Phyllobacterium brassicacearum STM196, a plant growth-promoting rhizobacteria strain isolated from rapeseed roots, alleviates the inhibition exerted by high nitrate supply on lateral root growth. Since soil-borne bacteria can produce IAA and since this plant hormone may be implicated in the high nitrate-dependent control of lateral root development, we … Show more

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Cited by 115 publications
(97 citation statements)
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“…The possibility exists that auxin synthesized by the plant is also involved. For example, although auxin-induced GUS staining was detected in Arabidopsis in response to Phyllobacterium brassicacearum inoculation, this PGPB strain produced very low levels of IAA and did not cause an increase in IAA content in plant roots [73]. By employing Arabidopsis lines mutated in IAA production, transport, or signaling, these authors determined that P. brassicacearum inoculation stimulated auxin production by the plant.…”
Section: Discussionmentioning
confidence: 99%
“…The possibility exists that auxin synthesized by the plant is also involved. For example, although auxin-induced GUS staining was detected in Arabidopsis in response to Phyllobacterium brassicacearum inoculation, this PGPB strain produced very low levels of IAA and did not cause an increase in IAA content in plant roots [73]. By employing Arabidopsis lines mutated in IAA production, transport, or signaling, these authors determined that P. brassicacearum inoculation stimulated auxin production by the plant.…”
Section: Discussionmentioning
confidence: 99%
“…Plant root development is highly responsive both to changes in nitrate availability in the rhizosphere [4] . The different plant species response to exogenous organic nitrogen is variable.…”
Section: Discussionmentioning
confidence: 99%
“…A branching architecture dimension expresses root plastic responses to the environment [3] . Plant root development is highly responsive to changes in nitrate availability [4] . NO has a key role in signal transduction network in plants influencing the action of hormones [5] .…”
Section: Introductionmentioning
confidence: 99%
“…como Bacillus megaterium (López-Bucio et al, 2007), Phyllobacterium brassicacearum STM196 (Contesto et al 2010, Galland et al 2012, B. subtilis TpP-1, Pseudomonas sp. AvH-4, P. aeruginosa AS-17 (Ali 2015) e Burkholderia phytofirmans PsJN (Poupin et al 2016) na promoção de crescimento vegetal e modificação de arquitetura radicular.…”
Section: Mutantes De a Thaliana Insensíveis A Fitormônios Também Forunclassified
“…Em contraste, a inoculação de Arabidopsis com a linhagem de rizobactéria Phyllobacterium brassicacearum STM196 resultou em elongação dos pelos radiculares e no aumento do crescimento de raízes laterais em Arabidopsis selvagens, sendo esses efeitos abolidos em mutantes defectivos no transporte e sinalização de auxinas (Contesto et al 2010) e etileno (Galland et al 2012), indicando que essas vias são requeridas na promoção de crescimento e resposta da arquitetura da raiz por esse isolado. Estudos mais recentes utilizando também mutantes de Arabidopsis thaliana insensíveis a auxinas e etileno demonstraram que a indução de crescimento vegetal por B. subtilis TpP-1, Pseudomonas sp.…”
Section: Mutantes De a Thaliana Insensíveis A Fitormônios Também Forunclassified