Further Evidence that Cytoplasmic Acidosis Is a Determinant of Flooding Intolerance in Plants

摘要: We present two pieces of evidence that regulation cytoplasmic pH near neutrality is a prerequisite for survival root tips during hypoxia. First, blackeye peas and navy beans show earlier acidosis under hypoxia than soybeans or pumpkin maize, die earlier. Second, when in maize greatly retarded by treatment with 25 millimolar Ca(NO3)2, they remain viable much longer period time untreated hypoxic tips. also viability unaffected the supply exogenous sugar (and so on rate ethanolic fermentation) at least 16 hours