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Switch from intracellular to intercellular invasion during water stress-tolerant legume nodulation

Sofie Goormachtig (UGent) , Ward Capoen (UGent) , EK James and Marcella Holsters (UGent)
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Abstract
Rhizobia colonize their legume hosts by different modes of entry while initiating symbiotic nitrogen fixation. Most legumes are invaded via growing root hairs by the root hair-curl mechanism, which involves epidermal cell responses. However, invasion of a number of tropical legumes happens through fissures at lateral root bases by cortical, intercellular crack entry. In the semiaquatic Sesbania rostrata, the bacteria entered via root hair curls under nonflooding conditions. Upon flooding, root hair growth was prevented, invasion on accessible root hairs was inhibited, and intercellular invasion was recruited. The plant hormone ethylene was involved in these processes. The occurrence of both invasion pathways on the same host plant enabled a comparison to be made of the structural requirements for the perception of nodulation factors, which were more stringent for the epidermal root hair invasion than for the cortical intercellular invasion at lateral root bases.
Keywords
INFECTION PROCESS, RHIZOBIUM-MELILOTI, STEM NODULES, CORTICAL-CELLS, DIFFERENTIAL DISPLAY, AZORHIZOBIUM-CAULINODANS, SESBANIA-ROSTRATA, RECEPTOR KINASE GENE, ROOT-NODULE DEVELOPMENT, FACTOR SIGNAL-TRANSDUCTION, flooding-adapted growth, symbiosis, nodulation factor, ethylene, host invasion

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Citation

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Chicago
Goormachtig, Sofie, Ward Capoen, EK James, and Marcella Holsters. 2004. “Switch from Intracellular to Intercellular Invasion During Water Stress-tolerant Legume Nodulation.” Proceedings of the National Academy of Sciences of the United States of America 101 (16): 6303–6308.
APA
Goormachtig, S., Capoen, W., James, E., & Holsters, M. (2004). Switch from intracellular to intercellular invasion during water stress-tolerant legume nodulation. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 101(16), 6303–6308.
Vancouver
1.
Goormachtig S, Capoen W, James E, Holsters M. Switch from intracellular to intercellular invasion during water stress-tolerant legume nodulation. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. 2004;101(16):6303–8.
MLA
Goormachtig, Sofie, Ward Capoen, EK James, et al. “Switch from Intracellular to Intercellular Invasion During Water Stress-tolerant Legume Nodulation.” PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 101.16 (2004): 6303–6308. Print.
@article{298730,
  abstract     = {Rhizobia colonize their legume hosts by different modes of entry while initiating symbiotic nitrogen fixation. Most legumes are invaded via growing root hairs by the root hair-curl mechanism, which involves epidermal cell responses. However, invasion of a number of tropical legumes happens through fissures at lateral root bases by cortical, intercellular crack entry. In the semiaquatic Sesbania rostrata, the bacteria entered via root hair curls under nonflooding conditions. Upon flooding, root hair growth was prevented, invasion on accessible root hairs was inhibited, and intercellular invasion was recruited. The plant hormone ethylene was involved in these processes. The occurrence of both invasion pathways on the same host plant enabled a comparison to be made of the structural requirements for the perception of nodulation factors, which were more stringent for the epidermal root hair invasion than for the cortical intercellular invasion at lateral root bases.},
  author       = {Goormachtig, Sofie and Capoen, Ward and James, EK and Holsters, Marcella},
  issn         = {0027-8424},
  journal      = {PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA},
  keyword      = {INFECTION PROCESS,RHIZOBIUM-MELILOTI,STEM NODULES,CORTICAL-CELLS,DIFFERENTIAL DISPLAY,AZORHIZOBIUM-CAULINODANS,SESBANIA-ROSTRATA,RECEPTOR KINASE GENE,ROOT-NODULE DEVELOPMENT,FACTOR SIGNAL-TRANSDUCTION,flooding-adapted growth,symbiosis,nodulation factor,ethylene,host invasion},
  language     = {eng},
  number       = {16},
  pages        = {6303--6308},
  title        = {Switch from intracellular to intercellular invasion during water stress-tolerant legume nodulation},
  url          = {http://dx.doi.org/10.1073/pnas.0401540101},
  volume       = {101},
  year         = {2004},
}

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