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GROWTH‐INHIBITORS AND GROWTH‐PROMOTERS IN ENTEROMORPHA COMPRESS A (CHLOROPHYTA) 1
Author(s) -
Niemann Dorothea I.,
Dörffling Karl
Publication year - 1980
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.1980.tb03049.x
Subject(s) - biology , coleoptile , indole 3 acetic acid , elongation , abscisic acid , acetic acid , chlorophyta , botany , indole test , avena , methanol , thin layer chromatography , biochemistry , chromatography , auxin , algae , organic chemistry , gene , chemistry , materials science , ultimate tensile strength , metallurgy
Methanol extracts from the alga Enteromorpha compressa (L.) Grev. contain substances which inhibit the elongation of Lepidium roots. Chromatographic separation of the inhibiting substances revealed that one of the inhibitory zones of the chromatograms had properties of the so‐called inhibitor β. Neither abscisic acid (ABA) nor lunularic acid proved to be responsible for the growth‐inhibiting property of this zone. Moreover, the extracts contain substances which promote the elongation of Avena coleoptile segments. One of these substances could be tentatively identified as indole‐3‐acetic acid by thin‐layer and gas‐liquid chromatography. (In addition to indole‐3‐acetic acid a second growth‐promoting factor with the properties of the so‐called accelerator α could be detected.)