retardation of photosynthesis activity
Answers
Answer:
Spermidine, spermine and their diamine precursor putrescine at 1 mM concentration inhibited in vitro Hill reaction and 32P- photophosphorylation, and in vivo 14CO2-fixation in excised stipules and pod walls of pea (Pisum sativum cv. Early Wonder) during different stages of development. The inhibition was less marked with increasing age of the stipule. The largest effects on the Hill reaction and 32P- photophosphorylation were found for spermidine and spermine, respectively. Maximum inhibition of 14CO2-fixation by putrescine was found in stipule
Answer:
Spermidine, spermine and their diamine precursor putrescine at 1 mM concentration inhibited in vitro Hill reaction and 32P- photophosphorylation, and in vivo 14CO2-fixation in excised stipules and pod walls of pea (Pisum sativum cv. Early Wonder) during different stages of development. The inhibition was less marked with increasing age of the stipule. The largest effects on the Hill reaction and 32P- photophosphorylation were found for spermidine and spermine, respectively. Maximum inhibition of 14CO2-fixation by putrescine was found in stipule.