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SrSymRK, a plant receptor essential for symbiosome formation

Ward Capoen (UGent) , Sofie Goormachtig (UGent) , Riet De Rycke (UGent) , Katrien Schroeyers (UGent) and Marcella Holsters (UGent)
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Abstract
The symbiosis between legumes and rhizobia is essential for the nitrogen input into the life cycle on our planet. New root organs, the nodules, are established, which house N-2-fixing bacteria internalized into the host cell cytoplasm as horizontally acquired organelles, the symbiosomes. The interaction is initiated by bacterial invasion via epidermal root hair curling and cell division in the cortex, both triggered by bacterial nodulation factors. Of the several genes involved in nodule initiation that have been identified, one encodes the leucine-rich repeat-type receptor kinase SymRK. In SymRK mutants of Lotus japonicus or its orthologs in Medicago sp. and Pisum sativum, nodule initiation is arrested at the level of the root hair interaction. Because of the epidermal block, the role of SymRK at later stages of nodule development remained enigmatic. To analyze the role of SymRK downstream of the epidermis, the water-tolerant legume Sesbania rostrata was used that has developed a nodulation strategy to circumvent root hair responses for bacterial invasion. Evidence is provided that SymRK plays an essential role during endosymbiotic uptake in plant cells.
Keywords
NODULATION, LEGUMES, FUNGAL SYMBIOSES, LYSM DOMAIN, KINASE GENE, MEDICAGO-TRUNCATULA, INTERCELLULAR INVASION, AZORHIZOBIUM-CAULINODANS, NODULE DEVELOPMENT, SESBANIA-ROSTRATA, infection thread structure, Sesbania rostrata, legume nodulation, bacterial uptake, endosymbiosis

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Citation

Please use this url to cite or link to this publication:

Chicago
Capoen, Ward, Sofie Goormachtig, Riet De Rycke, Katrien Schroeyers, and Marcella Holsters. 2005. “SrSymRK, a Plant Receptor Essential for Symbiosome Formation.” Proceedings of the National Academy of Sciences of the United States of America 102 (29): 10369–10374.
APA
Capoen, W., Goormachtig, S., De Rycke, R., Schroeyers, K., & Holsters, M. (2005). SrSymRK, a plant receptor essential for symbiosome formation. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 102(29), 10369–10374.
Vancouver
1.
Capoen W, Goormachtig S, De Rycke R, Schroeyers K, Holsters M. SrSymRK, a plant receptor essential for symbiosome formation. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. 2005;102(29):10369–74.
MLA
Capoen, Ward, Sofie Goormachtig, Riet De Rycke, et al. “SrSymRK, a Plant Receptor Essential for Symbiosome Formation.” PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 102.29 (2005): 10369–10374. Print.
@article{331175,
  abstract     = {The symbiosis between legumes and rhizobia is essential for the nitrogen input into the life cycle on our planet. New root organs, the nodules, are established, which house N-2-fixing bacteria internalized into the host cell cytoplasm as horizontally acquired organelles, the symbiosomes. The interaction is initiated by bacterial invasion via epidermal root hair curling and cell division in the cortex, both triggered by bacterial nodulation factors. Of the several genes involved in nodule initiation that have been identified, one encodes the leucine-rich repeat-type receptor kinase SymRK. In SymRK mutants of Lotus japonicus or its orthologs in Medicago sp. and Pisum sativum, nodule initiation is arrested at the level of the root hair interaction. Because of the epidermal block, the role of SymRK at later stages of nodule development remained enigmatic. To analyze the role of SymRK downstream of the epidermis, the water-tolerant legume Sesbania rostrata was used that has developed a nodulation strategy to circumvent root hair responses for bacterial invasion. Evidence is provided that SymRK plays an essential role during endosymbiotic uptake in plant cells.},
  author       = {Capoen, Ward and Goormachtig, Sofie and De Rycke, Riet and Schroeyers, Katrien and Holsters, Marcella},
  issn         = {0027-8424},
  journal      = {PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA},
  keyword      = {NODULATION,LEGUMES,FUNGAL SYMBIOSES,LYSM DOMAIN,KINASE GENE,MEDICAGO-TRUNCATULA,INTERCELLULAR INVASION,AZORHIZOBIUM-CAULINODANS,NODULE DEVELOPMENT,SESBANIA-ROSTRATA,infection thread structure,Sesbania rostrata,legume nodulation,bacterial uptake,endosymbiosis},
  language     = {eng},
  number       = {29},
  pages        = {10369--10374},
  title        = {SrSymRK, a plant receptor essential for symbiosome formation},
  url          = {http://dx.doi.org/10.1073/pnas.0504250102},
  volume       = {102},
  year         = {2005},
}

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