Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

The influence of root temperature on 14C assimilate profiles in wheat roots

  • 22 Accesses

  • 11 Citations

Summary

The rate of translocation of 14C assimilates from leaves to seminal roots in wheat seedlings was considerably reduced by lowering root temperature from 20° to 10° or 5° although the total translocation of 14C to the roots after 24 h was little affected by temperature. The lowered root temperatures (particularly 5°) resulted in a more uniform distribution of assimilate along the roots than did a temperature of 20°, the ratios of radioactivity/cm in the apical cm, elongating zone, and basal parts of the root after 24 h being 14.0:9.6:1 in 20° roots by contrast with 2.8:1:1 in 5° roots. Temperature effects on assimilate distribution may help explain the observations that for roots grown below 15° ion uptake is sustained in older parts and that roots grown at a low temperature are thicker than roots grown at a higher one.

This is a preview of subscription content, log in to check access.

References

  1. Bowen, G. D.: Effects of soil temperature on root growth and on phosphate uptake along Pinus radiata roots. Aust. J. Soil Res. 8, 31–42 (1970)

  2. Bowen, G. D., Rovira, A. D.: Phosphate uptake along attached and excised wheat roots measured by an automatic scanning method. Aust. J. biol. Sci. 20, 369–378 (1967)

  3. Bowen, G. D., Rovira, A. D.: Relationship between root morphology and nutrient uptake. In: Recent advances in plant nutrition, vol. 1, p. 293–305 (R. M. Samish, ed.), New York-London-Paris: Gordon & Breach 1971

  4. Bowling, D. F.: Effect of ringing on potassium uptake by Ricinus communi plants. Nature (Lond.) 206, 317–318 (1965)

  5. Brouwer, R., Levi, E.: Responses of bean plants to root temperatures; IV. Translocation of 22Na applied to leaves. Acta bot. neerl. 18, 58–66 (1969)

  6. Burr, G. O., Hartt, C. E., Tanimoto, T., Takahashi, D., Brodie, H. W.: The circulatory system of the sugar cane plant. Proc. I UNESCO Internat. Conf. Sci. Res. 4, 351–358 (1958)

  7. Hoagland, D. R., Arnon, D. I.: The water culture method for growing plants without soil. Univ. Calif. Agr. Exp. Sta. Circ. No 347 (1938, revised 1950)

  8. Ketellapper, H. J.: The effect of soil temperature on the growth of Phalaris tuberosa L. Physiol. Plant. 13, 641–647 (1960)

  9. Pitman, M. G., Mowat, J., Nair, H.: Interactions of processes for accumulation of salt and sugar in barley plants. Aust. J. biol. Sci. 24, 619–631 (1971)

  10. Rovira, A. D.: Diffusion of carbon compounds away from wheat roots. Aust. J. biol. Sci. 22, 1287–1290 (1969).

  11. Wardlaw, I. E.: The control and pattern of movement of carbohydrates in plants. Bot. Rev. 34, 79–105 (1968)

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Rovira, A.D., Bowen, G.D. The influence of root temperature on 14C assimilate profiles in wheat roots. Planta 114, 101–107 (1973). https://doi.org/10.1007/BF00387468

Download citation

Keywords

  • Uniform Distribution
  • Temperature Effect
  • Basal Part
  • Wheat Seedling
  • Wheat Root