Abstract
Anomeric mixtures of synthetic 1-O-lauroyl-D-glucose showed a marked plant growth-inhibiting effect in the Avena coleoptile straight growth test ; α-anomer-rich mixture and β-anomer-rich mixture were equally effective. The chain length and location of the acylfunction were clearly critical for this biological effect, since the 1-O-glucosyl esters of caprylic, myristic, and stearic acids, and 3-O- and 6-O-lauroyl-D-glucoses were ineffective. The following disaccharide esters were also ineffective in this bioassay : sucrose-monoesters of lauric, palmitic, and stearic acids, trehalose-monoester of lauric acid, and sucrose esters of hydrogenated beef tallow fatty acids. None of the samples tested showed IAA or cytokinin activity.
