Immunocytochemical localization of indole‐3‐acetic acid in primary roots of Zea mays

L. SHI, I. MILLER, R. MOORE

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

Colloidal gold‐labelled antibody was used to localize indole‐3‐acetic acid in caps of primary roots of Z. mays cv. Kys. Gold particles accumulated on the nucleus, vacuoles, mitochondria, and some dictyosomes and dictyosome‐derived vesicles. This is the first localization of indole‐3‐acetic acid in dictyosomes and dictyosome‐derived vesicles and indicates that dictyosomes and vesicles constitute a pathway for indole‐3‐acetic acid movement in and secretion from root cap cells. Our findings provide cytochemical evidence to support the hypothesis that indole‐3‐acetic acid plays an important role in root gravitropism.

Original languageEnglish (US)
Pages (from-to)967-973
Number of pages7
JournalPlant, Cell & Environment
Volume16
Issue number8
DOIs
StatePublished - Nov 1993

Keywords

  • Zea mays, corn
  • colloidal gold immunocytochemistry
  • indole‐3‐acetic acid (IAA)

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