图22.3 . Plants respond to both as collections of cells and as whole organisms. Stress constitute environmental signal is communicated within cells and throughout the plants. Transduction of environmental signals typically results in altered gene expression at in the cellular level, which in turn influence metabolism and development of the whole plant.图22.3 . Plants respond to both as collections of cells and as whole organisms. Stress constitute environmental signal is communicated within cells and throughout the plants. Transduction of environmental signals typically results in altered gene expression at in the cellular level, which in turn influence metabolism and development of the whole plant