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Effects of osmoprotectants upon NaCl stress in rice

(1997) PLANT PHYSIOLOGY. 115(1). p.159-169
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Abstract
Plants accumulate a number of osmoprotective substances in response to NaCl stress, one of them being proline (Pro). While characterizing some of the changes in solute accumulation in NaCl-stressed rice (Oryza sativa L.), we identified several other potential osmoprotectants. One such substance, trehalose, begins to accumulate in small amounts in roots after 3 d. We performed a series of experiments to compare the effects of Pro and trehalose on ion accumulation to determine whether the two chemicals protect the same physiological processes. We found that Pro either has no effect or, in some cases, exasperates the effect of NaCl on growth inhibition, chlorophyll loss, and induction of a highly sensitive marker for plant stress, the osmotically regulated salT gene. By contrast, low to moderate concentrations of trehalose reduce Na+ accumulation, salT expression, and growth inhibition. Somewhat higher concentrations (10 mM) prevent NaCl-induced loss of chlorophyll in blades, preserve root integrity, and enhance growth. The results of this study indicate that during osmotic stress trehalose or carbohydrates might be more important for rice than Pro.
Keywords
INDUCED WATER-STRESS, CULTURED SORGHUM CELLS, ORYZA-SATIVA-L, SALT STRESS, SODIUM-IONS, PHYSIOLOGICAL-CHANGES, DROUGHT TOLERANCE, ABSCISIC-ACID, PROLINE, GLYCINEBETAINE

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Chicago
García, Ana Beatriz, Janice de Almeida Engler, Suresh Iyer, Tom Gerats, Marc Van Montagu, and Allan Caplan. 1997. “Effects of Osmoprotectants Upon NaCl Stress in Rice.” Plant Physiology 115 (1): 159–169.
APA
García, A. B., de Almeida Engler, J., Iyer, S., Gerats, T., Van Montagu, M., & Caplan, A. (1997). Effects of osmoprotectants upon NaCl stress in rice. PLANT PHYSIOLOGY, 115(1), 159–169.
Vancouver
1.
García AB, de Almeida Engler J, Iyer S, Gerats T, Van Montagu M, Caplan A. Effects of osmoprotectants upon NaCl stress in rice. PLANT PHYSIOLOGY. 1997;115(1):159–69.
MLA
García, Ana Beatriz, Janice de Almeida Engler, Suresh Iyer, et al. “Effects of Osmoprotectants Upon NaCl Stress in Rice.” PLANT PHYSIOLOGY 115.1 (1997): 159–169. Print.
@article{184984,
  abstract     = {Plants accumulate a number of osmoprotective substances in response to NaCl stress, one of them being proline (Pro). While characterizing some of the changes in solute accumulation in NaCl-stressed rice (Oryza sativa L.), we identified several other potential osmoprotectants. One such substance, trehalose, begins to accumulate in small amounts in roots after 3 d. We performed a series of experiments to compare the effects of Pro and trehalose on ion accumulation to determine whether the two chemicals protect the same physiological processes. We found that Pro either has no effect or, in some cases, exasperates the effect of NaCl on growth inhibition, chlorophyll loss, and induction of a highly sensitive marker for plant stress, the osmotically regulated salT gene. By contrast, low to moderate concentrations of trehalose reduce Na+ accumulation, salT expression, and growth inhibition. Somewhat higher concentrations (10 mM) prevent NaCl-induced loss of chlorophyll in blades, preserve root integrity, and enhance growth. The results of this study indicate that during osmotic stress trehalose or carbohydrates might be more important for rice than Pro.},
  author       = {García, Ana Beatriz and de Almeida Engler, Janice and Iyer, Suresh and Gerats, Tom and Van Montagu, Marc and Caplan, Allan},
  issn         = {0032-0889},
  journal      = {PLANT PHYSIOLOGY},
  keywords     = {INDUCED WATER-STRESS,CULTURED SORGHUM CELLS,ORYZA-SATIVA-L,SALT STRESS,SODIUM-IONS,PHYSIOLOGICAL-CHANGES,DROUGHT TOLERANCE,ABSCISIC-ACID,PROLINE,GLYCINEBETAINE},
  language     = {eng},
  number       = {1},
  pages        = {159--169},
  title        = {Effects of osmoprotectants upon NaCl stress in rice},
  url          = {http://dx.doi.org/10.1104/pp.115.1.159},
  volume       = {115},
  year         = {1997},
}

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