环境胁迫与生物防御反应

Environmental Stress and Biological Defence Reactions

生物的生存总是逃避不了周围各种环境胁迫因素的影响。非生物因素如温度、水分、湿度、光照、营养、环境污染、物理干扰和土壤坚实度等;生物因素如有害生物的袭击等。兴衰存亡的关键,除了取决于胁迫的种类。

Living organisms are never rid of various environmental stresses sur(?)ounding them.The keyfor the survival or lose of their populations lies in whether they are able to use their own de-fence mechanisms to ove(?)come the stress.There are many influencing factors involved,suchas previous living conditions,stress index,air pollution etc.It is approved that Glutathioneis a compound inside organism body for defence,which can be taken as an indicator of en-vironmental stresses.The biological defence theory needs great amount of research works forits completion.