Department of Botany and the Maryland Agricultural Experiment Station, University of Maryland, College Park, Maryland 20742.
Plant Physiol. 1992 Sep;100(1):1-6. doi: 10.1104/pp.100.1.1.
Exposure to oxygen deficits is more widespread in biological systems than is commonly believed. Until recently, the general perception of anaerobic metabolism was often limited to the induction of alcoholic or lactic acid fermentation as the sole biochemical response to hypoxia/anoxia. Developments in the physiology, biochemistry, and molecular biology of anaerobic responses in invertebrates, lower plants, and higher plants have demonstrated that, depending upon the species, anaerobic metabolism may encompass much more than simple glycolytic metabolism. Here, recent progress in elucidating the mechanism(s) determining tolerance versus intolerance to anaerobic environments in higher plants is discussed, drawing most heavily on experimental systems using seeds or seedlings.
氧气缺乏的暴露在生物系统中比人们普遍认为的更为广泛。直到最近,人们对无氧代谢的普遍认识通常仅限于将酒精或乳酸发酵的诱导作为缺氧/缺氧的唯一生化反应。无脊椎动物、低等植物和高等植物中无氧反应的生理学、生物化学和分子生物学的发展表明,根据物种的不同,无氧代谢可能不仅仅是简单的糖酵解代谢。在这里,我们讨论了阐明高等植物对厌氧环境耐受与不耐受的机制的最新进展,主要借鉴了使用种子或幼苗的实验系统。