Specialists in biomolecules
Normally plants do not develop under optimum conditions throughout their lifecycle, but continually undergo various adverse situations that cause them different types of stress, preventing them reaching their maximum yield. Also, a species' physiological optimum differs from its ecological optimum and therefore in each case the plant has to adapt to the environmental conditions of its cultivation habitat.
Stress is considered to be the change of any environmental factor that acts on the plant, affecting its biochemical and physiological response, which can occasionally cause damage or lesions. In general, stress situations lead to a series of compensatory physiological changes in the plant aimed at maintaining the organism's vital functions.