Aeration in Roots

  • W. Armstrong
Conference paper
Part of the NATO ASI Series book series (volume 19)

Abstract

Sessions at the XIV International Botanical Congress at Berlin in 1987 and the topics being addressed within this section of the workshop reveal a welcome broadening of research into anaerobic stress in plants. This essay is addressed to those with an interest in root anoxia/hypoxia but who may as yet be unfamiliar with some of the basic biophysical complexities of the aeration process at the whole root or root system level. The modelling of aeration is the central theme, developed first by the use of some simple electrical analogues and diffusion equations. This is followed by the introduction (but not derivation) of more complex models which accommodate to some extent the multicylindrical basis of root aeration. These models suggest that there is considerable potential for the localized development of anoxia in roots and temperature as well as temporal and spatial variation in root characteristics are stressed as important determining factors in this.

Keywords

Permeability Respiration Hull Aeration Suffix 

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References

  1. Armstrong W (1971) Radial oxygen losses from intact rice roots as affected by distance from the apex, respiration and waterlogging. Physiol Plant 25:192–197CrossRefGoogle Scholar
  2. Armstrong W (1979) Aeration in higher plants. In: Woolhouse H-W (ed) Advances in Botanical Research. Academic Press, London, pp 225–332Google Scholar
  3. Armstrong W, Healy MT, Lythe S (1983) Oxygen diffusion in pea. II Oxygen concentrations in the primary pea root apex as affected by growth, the production of laterals and radial oxygen loss. New Phytologist 94: 549–559CrossRefGoogle Scholar
  4. Armstrong W, Beckett PM (1985) Root aeration in unsaturated soil: a multi-shelled mathematical model of oxygen diffusion and distribution with and without sectoral wet-soil blocking of the diffusion path. New Phytologist 100:293–311CrossRefGoogle Scholar
  5. Armstrong W, Beckett PM (1987) Internal aeration and the development of stelar anoxia in submerged roots: a multi-shelled mathematical model combining axial diffusion of oxygen in the cortex with radial losses to the stele, the wall layers and the rhizosphere. New Phytologist 105:221–245CrossRefGoogle Scholar
  6. Drew M, Saglio PH, Pradet A (1985) Larger adenylate charge and ATP/ADP ratios in aerenchymatous roots of Zea mays in aerobic media as a consequence of improved internal oxygen transport. Planta 165:51–58CrossRefGoogle Scholar
  7. Moon GJ, Clough BF, Peterson C, Allaway WG (1986) Apoplastic and symplastic pathways in Avicennia marina (Forsk.) Vierh. roots revealed by fluorescent tracer dyes. Aust J Plant Physiology 13:637–648CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1989

Authors and Affiliations

  • W. Armstrong
    • 1
    • 2
  1. 1.Department of Plant BiologyThe UniversityHullUK
  2. 2.Department of GeneticsThe UniversityHullUK

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