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Ethylene-mediated phenotypic plasticity in root nodule development on Sesbania rostrata

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Abstract
Leguminous plants in symbiosis with rhizobia form either indeterminate nodules with a persistent meristem or determinate nodules with a transient meristematic region. Sesbania rostrata was thought to possess determinate stem and root nodules, However, the nature of nodule development is hybrid, and the early stages resemble those of indeterminate nodules. Here we show that, depending on the environmental conditions, mature root nodules can be of the indeterminate type. In situ hybridizations with molecular markers for plant cell division, as well as the patterns of bacterial nod and nif gene expression, confirmed the indeterminate nature of 30-day-old functional root nodules. Experimental data provide evidence that the switch in nodule type is mediated by the plant hormone ethylene.
Keywords
GENES, LEGUME, PLANTS, EXPRESSION, TERANGA, NODULATION, RHIZOBIUM-MELILOTI, AZORHIZOBIUM-CAULINODANS, PISUM-SATIVUM-L, waterlogging, tropical legume, phytohormones, Azorhizobium caulinodans, STEM NODULES

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Chicago
Fernández-López, Manuel, Sofie Goormachtig, Mengsheng Gao, Wim D’Haeze, Marc Van Montagu, and Marcella Holsters. 1998. “Ethylene-mediated Phenotypic Plasticity in Root Nodule Development on Sesbania Rostrata.” Proceedings of the National Academy of Sciences of the United States of America 95 (21): 12724–12728.
APA
Fernández-López, M., Goormachtig, S., Gao, M., D’Haeze, W., Van Montagu, M., & Holsters, M. (1998). Ethylene-mediated phenotypic plasticity in root nodule development on Sesbania rostrata. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 95(21), 12724–12728.
Vancouver
1.
Fernández-López M, Goormachtig S, Gao M, D’Haeze W, Van Montagu M, Holsters M. Ethylene-mediated phenotypic plasticity in root nodule development on Sesbania rostrata. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. 1998;95(21):12724–8.
MLA
Fernández-López, Manuel, Sofie Goormachtig, Mengsheng Gao, et al. “Ethylene-mediated Phenotypic Plasticity in Root Nodule Development on Sesbania Rostrata.” PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 95.21 (1998): 12724–12728. Print.
@article{180231,
  abstract     = {Leguminous plants in symbiosis with rhizobia form either indeterminate nodules with a persistent meristem or determinate nodules with a transient meristematic region. Sesbania rostrata was thought to possess determinate stem and root nodules, However, the nature of nodule development is hybrid, and the early stages resemble those of indeterminate nodules. Here we show that, depending on the environmental conditions, mature root nodules can be of the indeterminate type. In situ hybridizations with molecular markers for plant cell division, as well as the patterns of bacterial nod and nif gene expression, confirmed the indeterminate nature of 30-day-old functional root nodules. Experimental data provide evidence that the switch in nodule type is mediated by the plant hormone ethylene.},
  author       = {Fern{\'a}ndez-L{\'o}pez, Manuel and Goormachtig, Sofie and Gao, Mengsheng and D'Haeze, Wim and Van Montagu, Marc and Holsters, Marcella},
  issn         = {0027-8424},
  journal      = {PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA},
  keyword      = {GENES,LEGUME,PLANTS,EXPRESSION,TERANGA,NODULATION,RHIZOBIUM-MELILOTI,AZORHIZOBIUM-CAULINODANS,PISUM-SATIVUM-L,waterlogging,tropical legume,phytohormones,Azorhizobium caulinodans,STEM NODULES},
  language     = {eng},
  number       = {21},
  pages        = {12724--12728},
  title        = {Ethylene-mediated phenotypic plasticity in root nodule development on Sesbania rostrata},
  url          = {http://dx.doi.org/10.1073/pnas.95.21.12724},
  volume       = {95},
  year         = {1998},
}

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