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Planta

, Volume 160, Issue 1, pp 66–72 | Cite as

Regulation of growth in stem sections of deep-water rice

  • Ilya Raskin
  • Hans Kende
Article

Abstract

Submergence in water greatly stimulates internodal elongation in excised stem sections of deep-water rice (Oryza sativa L. cv. “Habiganj Aman II”) and inhibits growth of leaf blades and leaf sheaths. The highest rates of internodal growth have been observed in continuous light. Very little growth occurs in submerged sections kept in darkness or incubated under N2 in the light. The effect of submergence on the growth of deep-water rice is, at least in part, mediated by C2H4, which accumulates in the air spaces of submerged sections. This accumulation results from increased C2H4 synthesis in the internodes of submerged sections and reduced diffusion of C2H4 from the tissue into the water. Increased C2H4 levels accelerate internodal elongation and inhibit the growth of leaves. Compounds capable of changing the rate of C2H4 synthesis, namely aminoethoxyvinylglycine, an inhibitor of C2H4 synthesis, and 1-aminocyclopropane-1-carboxylic acid, the immediate, precursor of C2H4, have opposite effects on growth of internodes and leaves. The enhancement of internodal elongation by C2H4 is particularly pronounced in an atmosphere of high CO2 and low O2. The increase in C2H4 synthesis in internodes of submerged sections is primarily triggered by reduced atmospheric concentrations of O2. The rate of C2H4 evolution by internodes isolated from stem sections and incubated in an atmosphere of low O2 is up to four times greater than that of isolated internodes incubated in air. In contrast, C2H4 evolution from the leaves is reduced under hypoxic conditions. The effect of submergence on growth of stem sections of deep-water rice can be mimicked by exposing non-submerged sections to a gas mixture which is similar to the gaseous atmosphere in the internodal lacunae of submerged sections, namely 3% O2, 6% CO2, 91% N2 (by vol.) and 1 μl l-1 C2H4. Our results indicate that growth responses obtained with isolated rice stem sections are similar to those of intact deep-water rice plants.

Key words

Carbon dioxide (ethylene, rice) Deep-water rice Ethylene (rice) Oryza (growth regulation) Oxygen (ethylene synthesis) 

Abbreviations

ACC

1-aminocyclopropane-1-carboxylic acid

AVG

aminoethoxyvinylglycine

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References

  1. De Datta, S.K. (1981) Principles and practices of rice production. Wiley, New YorkGoogle Scholar
  2. Hansen, E. (1942) Quantitative study of ethylene production in relation to respiration of pears. Bot. Gaz. (Chicago) 103, 543–558Google Scholar
  3. Jackson, M.B. (1982) Ethylene as a growth promoting hormone under flooded conditions. In: Plant growth substances, 1982 pp. 291–301, Wareing, P.F., ed. Academic Press, London New YorkGoogle Scholar
  4. Kende, H., Hanson, A.D. (1976) Relationship between ethylene and senescence in morning-glory flower tissue. Plant Physiol. 57, 523–527Google Scholar
  5. Lizada, M.C.C., Yang, S.F. (1979), A simple and sensitive assay for 1-aminocyclopropane-1-carboxylic acid. Anal Biochem. 100, 140–145Google Scholar
  6. Métraux, J.-P., Kende, H. (1983a) The role of ethylene in the growth response of submerged deep water rice. Plant Physiol. 72, 441–446Google Scholar
  7. Métraux, J.-P., Kende, H. (1983b) The cellular basis of the elongation response in submerged deep-water rice. Planta 160, 73–77Google Scholar
  8. Musgrave, A., Jackson, M.B., Ling, E. (1972) Callitriche stem elongation is controlled by ethylene and gibberellin Nature (london) New Biol. 238, 93–96Google Scholar
  9. Pratt, H.K., Workman, M., Martin, F.W., Lyons, J.M., (1960) Simple method for continuous treatment of plant material with metered traces of ethylene or other gases. Plant Physiol. 35, 609–611Google Scholar
  10. Raskin, I., Kende, H. (1983) Regulation of growth in rice seedlings. J. Plant Growth Regul., in pressGoogle Scholar
  11. Saltveit, M.E., Jr. (1978) Simple apparatus for diluting and dispensing trace concentrations of ethylene in air. Hort-Science 13, 249–151Google Scholar
  12. Vergara, B.S., Jackson, B., De Datta, S.K. (1976) Deep-water rice and its response to deep-water stress. In: Climate and rice, pp. 301–319. International Rice Research Institute, Los Baños, PhilippinesGoogle Scholar

Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • Ilya Raskin
    • 1
  • Hans Kende
    • 1
  1. 1.MSU-DOE Plant Research LaboratoryMichigan State UniversityEast LansingUSA

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