Department of Biochemistry, Oklahoma Agricultural Experiment Station, Oklahoma State University, Stillwater, Oklahoma 74078.
Plant Physiol. 1988 Feb;86(2):638-41. doi: 10.1104/pp.86.2.638.
The sugar compositions of root hairs of a variety of plant species were determined. Root hairs of legumes had very similar compositions, whereas those of different families varied widely. Only approximately 50% of the weight of the root hairs of legumes could be accounted for by sugar. Up to 80% of the weight of root hairs from other sources could be accounted for by sugars. Protein made up 5 to 8% of the weight of root hairs of dicots but only 1.3% in corn. Comparison between cell walls from various root cell types within legumes showed that the polysaccharide compositions of root epidermal, root hair, and root cortical cells were very similar. Cotton root hairs were markedly different from walls of mesophyll and epidermal cells of cotyledons from cotton.
测定了多种植物种属的根毛糖组成。豆科植物的根毛具有非常相似的组成,而不同科属的根毛则差异很大。豆科植物根毛的重量只有约 50%可以用糖来解释。而其他来源的根毛中,高达 80%的重量可以用糖来解释。蛋白质占双子叶植物根毛重量的 5%至 8%,而玉米中仅占 1.3%。对豆科植物不同根细胞类型的细胞壁进行比较后发现,根表皮、根毛和根皮层细胞的多糖组成非常相似。棉花根毛与棉花子叶的叶肉细胞和表皮细胞壁明显不同。