Auxin Physiology of Decapitated Stems of Phaseolus vulgaris L. Treated with Indol-3yl-acetic Acid
1973; Oxford University Press; Volume: 24; Issue: 5 Linguagem: Inglês
10.1093/jxb/24.5.949
ISSN1460-2431
AutoresJohn W. Patrick, D.J. Woolley,
Tópico(s)Polysaccharides and Plant Cell Walls
ResumoPhysiological amounts of indol-3yl-acetic acid (IAA) were accumulated by decapitated stems of Phaseolus vulgaris L. seedlings from lanolin pastes, containing 0.1 per cent IAA, applied to the cut surfaces of the stumps. Both the levels and gradients of extractable and diffusable IAA detected in the treated stumps compared favourably with those reported for the whole plants. A considerable portion of IAA that entered the tissue was metabolized to a compound that had chromatographic properties similar to indol-3yl-acetylaspartic acid. Two other metabolities were tentatively identified as indol-3yl-acetylaspartic acid indol-3yl-acetylglucose. The accumulated IAA appears to be transported as indol-3yl-acetic acid at an apparent velocity of 28 mm/h down the decapitated internodes.
Referência(s)