HORMONES AND DEVELOPMENTAL-CHANGE IN PLANTS SUBJECTED TO SUBMERGENCE OR SOIL WATERLOGGING

The morphology of many plants spcies is modified markedly by waterlogging of the soil or by submerging part, or all, of the shoot system. Effects can begin within a few minutes of inundation and some may increase tolerance to more prolonged inundation. Responses take place in tissues that experience poor aeration (Class I responses) and also in parts located some distances from the site of impended aeration (Class II responses). Evidence is reviewed for harmonal mediation in both classes of response, especially by ethylene (ethene). © 1990.