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Prevention of aluminium toxicity with supplemental boron. I. Maintenance of root elongation and cellular structure

Lenoble, M. E. ; Blevins, D. G. ; Sharp, R. E. ; Cumbie, B. G.

Plant, Cell & Environment, October 1996, Vol.19(10), pp.1132-1142 [Peer Reviewed Journal]

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  • Title:
    Prevention of aluminium toxicity with supplemental boron. I. Maintenance of root elongation and cellular structure
  • Author/Creator: Lenoble, M. E. ; Blevins, D. G. ; Sharp, R. E. ; Cumbie, B. G.
  • Subjects: L. ; Squash ; Aluminium Toxicity: Boron ; Root Growth
  • Is Part Of: Plant, Cell & Environment, October 1996, Vol.19(10), pp.1132-1142
  • Description: Aluminium toxicity is an important factor limiting plant growth mi acid soils. Symptoms of B deficiency and Al toxicity are very similar and generally associated with impaired membrane Function and . Thus the objective of this study was to determine whether supplemental B prevents Al inhibition of root growth and development. Squash ( L. cv. Sunbar) was grown in hydroponic nutrient media with 44 mmol m free Al and B concentrations extending from 5 to 100 mmol m. Our results establish that B protects against Al inhibition of root growth. Protection was apparent at all levels of organization examined: primary root and lateral root lengths; primary root cell elongation, cell production rate, tissue organization and cell structure; primary root morphology and maturation. Protection against Al inhibition was also apparent for shoot growth. These studies were undertaken in solution culture to limit the variables examined; however, the underlying motivation for this study is the problem of worldwide Al toxicity in soils. Therefore, the effect of adding additional B to a high‐Al soil was also investigated and is the subject of the companion paper (Le Noble. Blevins & Miles 1996, 19, 1143–1148).
  • Identifier: ISSN: 0140-7791 ; E-ISSN: 1365-3040 ; DOI: 10.1111/j.1365-3040.1996.tb00428.x