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Transport of Abscisic Acid‐2‐C‐14 in Intact Pea Seedlings
Author(s) -
BELLANDI DEISE MAURI,
DÖRFFLING KARL
Publication year - 1974
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1974.tb03152.x
Subject(s) - abscisic acid , botany , biology , apical dominance , apex (geometry) , chemistry , biochemistry , shoot , gene
When abscisic acid‐2‐C‐14 (AbA‐2‐C‐14), 1 μg in 5 μl 40% ethanol, is applied to the apical bud of light‐grown pea seedlings, C‐14 is translocated downwards only in very small amounts and does not enter the root. In contrast to this, C‐14 from indoleacetic acid‐C‐14 (IAA‐2‐C‐14) applied in the same manner is translocated to the root where it accumulates. When AbA‐2‐C‐14 is injected to the stem tissue at the apical bud, more labelled material is transported downwards than after application to the surface. Application of AbA‐2‐C‐14 to an expanded leaf results in considerable accumulation of C‐14 in the growing apical parts and in the lateral roots.