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Plant growth promotion driven by a novel Caulobacter strain

Dexian Luo (UGent) , Sarah Langendries (UGent) , Sonia García Méndez (UGent) , Joren De Ryck (UGent) , Derui Liu (UGent) , Stien Beirinckx (UGent) , Anne Willems (UGent) , Eugenia Russinova (UGent) , Jane Debode and Sofie Goormachtig (UGent)
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Abstract
Soil microbial communities hold great potential for sustainable and ecologically compatible agriculture. Although numerous plant-beneficial bacterial strains from a wide range of taxonomic groups have been reported, very little evidence is available on the plant-beneficial role of bacteria from the genus Caulobacter. Here, the mode of action of a Caulobacter strain, designated RHG1, which had originally been identified through a microbial screen for plant growth-promoting (PGP) bacteria in maize (Zea mays) is investigated in Arabidopsis thaliana. RHG1 colonized both roots and shoots of Arabidopsis, promoted lateral root formation in the root, and increased leaf number and leaf size in the shoot. The genome of RHG1 was sequenced and was utilized to look for PGP factors. Our data revealed that the bacterial production of nitric oxide, auxins, cytokinins, or 1-aminocyclopropane-1-carboxylate deaminase as PGP factors could be excluded. However, the analysis of brassinosteroid mutants suggests that an unknown PGP mechanism is involved that impinges directly or indirectly on the pathway of this growth hormone.
Keywords
genetics and gene regulation, genomics, microscopy and imaging, molecular signaling, rhizosphere and phyllosphere ecology KeyWords Plus:INDUCED SYSTEMIC RESISTANCE, ARABIDOPSIS-THALIANA, LEAF DEVELOPMENT, AUXIN TRANSPORT, NITRIC-OXIDE, SP NOV., RHIZOBACTERIA, BACTERIA, RHIZOSPHERE, EXPRESSION

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Citation

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MLA
Luo, Dexian, et al. “Plant Growth Promotion Driven by a Novel Caulobacter Strain.” MOLECULAR PLANT-MICROBE INTERACTIONS, vol. 32, no. 9, 2019, pp. 1162–74.
APA
Luo, D., Langendries, S., García Méndez, S., De Ryck, J., Liu, D., Beirinckx, S., … Goormachtig, S. (2019). Plant growth promotion driven by a novel Caulobacter strain. MOLECULAR PLANT-MICROBE INTERACTIONS, 32(9), 1162–1174.
Chicago author-date
Luo, Dexian, Sarah Langendries, Sonia García Méndez, Joren De Ryck, Derui Liu, Stien Beirinckx, Anne Willems, Eugenia Russinova, Jane Debode, and Sofie Goormachtig. 2019. “Plant Growth Promotion Driven by a Novel Caulobacter Strain.” MOLECULAR PLANT-MICROBE INTERACTIONS 32 (9): 1162–74.
Chicago author-date (all authors)
Luo, Dexian, Sarah Langendries, Sonia García Méndez, Joren De Ryck, Derui Liu, Stien Beirinckx, Anne Willems, Eugenia Russinova, Jane Debode, and Sofie Goormachtig. 2019. “Plant Growth Promotion Driven by a Novel Caulobacter Strain.” MOLECULAR PLANT-MICROBE INTERACTIONS 32 (9): 1162–1174.
Vancouver
1.
Luo D, Langendries S, García Méndez S, De Ryck J, Liu D, Beirinckx S, et al. Plant growth promotion driven by a novel Caulobacter strain. MOLECULAR PLANT-MICROBE INTERACTIONS. 2019;32(9):1162–74.
IEEE
[1]
D. Luo et al., “Plant growth promotion driven by a novel Caulobacter strain,” MOLECULAR PLANT-MICROBE INTERACTIONS, vol. 32, no. 9, pp. 1162–1174, 2019.
@article{8611476,
  abstract     = {Soil microbial communities hold great potential for sustainable and ecologically compatible agriculture. Although numerous plant-beneficial bacterial strains from a wide range of taxonomic groups have been reported, very little evidence is available on the plant-beneficial role of bacteria from the genus Caulobacter. Here, the mode of action of a Caulobacter strain, designated RHG1, which had originally been identified through a microbial screen for plant growth-promoting (PGP) bacteria in maize (Zea mays) is investigated in Arabidopsis thaliana. RHG1 colonized both roots and shoots of Arabidopsis, promoted lateral root formation in the root, and increased leaf number and leaf size in the shoot. The genome of RHG1 was sequenced and was utilized to look for PGP factors. Our data revealed that the bacterial production of nitric oxide, auxins, cytokinins, or 1-aminocyclopropane-1-carboxylate deaminase as PGP factors could be excluded. However, the analysis of brassinosteroid mutants suggests that an unknown PGP mechanism is involved that impinges directly or indirectly on the pathway of this growth hormone.},
  author       = {Luo, Dexian and Langendries, Sarah and García Méndez, Sonia and De Ryck, Joren and Liu, Derui and Beirinckx, Stien and Willems, Anne and Russinova, Eugenia and Debode, Jane and Goormachtig, Sofie},
  issn         = {0894-0282},
  journal      = {MOLECULAR PLANT-MICROBE INTERACTIONS},
  keywords     = {genetics and gene regulation,genomics,microscopy and imaging,molecular signaling,rhizosphere and phyllosphere ecology   KeyWords Plus:INDUCED SYSTEMIC RESISTANCE,ARABIDOPSIS-THALIANA,LEAF DEVELOPMENT,AUXIN TRANSPORT,NITRIC-OXIDE,SP NOV.,RHIZOBACTERIA,BACTERIA,RHIZOSPHERE,EXPRESSION},
  language     = {eng},
  number       = {9},
  pages        = {1162--1174},
  title        = {Plant growth promotion driven by a novel Caulobacter strain},
  url          = {http://dx.doi.org/10.1094/mpmi-12-18-0347-r},
  volume       = {32},
  year         = {2019},
}

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