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. 1981 Jan;67(1):146–149. doi: 10.1104/pp.67.1.146

Auxin-regulated Wall Loosening and Sustained Growth in Elongation 1

Larry N Vanderhoef 1,2, Roland R Dute 1,3
PMCID: PMC425639  PMID: 16661616

Abstract

It is proposed that auxin regulates and coordinates both wall loosening and the supply of wall materials in elongation. The tenets of the proposal allowed testable predictions. It was determined that, if the cell walls of Glycine max L. var. Wayne hypocotyl segments are maintained in a loosened state (by excising the segments directly into pH 4 medium), exogenous auxin induced only the second response. It was also predicted and confirmed that elongating systems, e.g. pea epicotyl, with certain early auxin-induced growth kinetics (an initial high non-steady-state rate followed immediately by a drop to a lower steady-state rate) would show a transient second response (in addition to the usual transient first response) when stimulated by pH 4 medium. Finally, it is pointed out that recent results which establish the existence of auxin-induced elongation-associated proteins support the proposition that auxin coordinates wall loosening and the supply of wall materials in elongation.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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