Peiman Zandi: Iran and China based researcher specializing in plant science, environment & conservation related themes: A scientific researcher from Islamic Azad University, Takestan, Iran, presently he is involving in a 3-year based research at Chinese Academy of Agricultural Sciences
To control water loss in plants they should encompass the ability to regulate the opening size of their available stomatal pores. This is important during water shortage, when water loss triggers their reduced growth, threatens their survival, and may lead to plant death. The negative impact of water stress in plants include poor growth pattern, expression of stress-related proteins and chaperones, overexpression/regulation of anti-oxidants, agglomeration of compatible solutes, enhancement of transporter quantity that account for water/ion acquisition and transportation and ABA-mediated stomatal closure. Stomatal closure is of the most rapid response in water conservation and maintaining turgidity in plants; being referred to as an avoidance mechanism. Acclimation and developments of plants in relatively high humidity promotes developing malfunctioning stomata incapable of increasing osmotic potential in guard cells leading to stomatal closure. Therefore, these plants in times of exposure to dryer conditions swiftly wilt and lose their commercial value. Exposing such plants to low atmospheric humidity or high temperature and ABA treatments during under-developing period; can avoid malfunctioning by producing more functional stomata.