청록색광에 색성적응된 Anacystis niduland 의 상전이 증가 = Increase of State Transition in Anacystis nidulans Adapted in Blue - green Light

다국어 초록 (Multilingual Abstract)

Photoacclimation of Anacystis nidulans toward blue-green light was investigated in terms of sensitivity of state transition. Ratio of phycobilin/chlorophyll and maximal photosynthetic rates of A. nidulans grown in blue-green light increased 7.6 and 1.5 times as large as those of white light-grown cells, respectively, but there was no apparnnt change in the energy transfer efficiency from phycocyanin to chlorophyll. The magnitude of state transition of blue-green light grown cells under preferential excitation of photosystem I by red light ($gt;630 ㎚) was increased by 38% in comparision with that of white-light grown cells. Uncoupler, m-chlorophenylhydrazone, and protein kinase inhibitor, 5`-p-fluorosulfonylbenzoyladenosine, severely inhibited the state 2 transition, but ATP synthase inhibitor, N,N`-dicyclohexylcarbodiimide, did the state 1/2 transitions. These results suggest that state transition in A. nidulons should be regulated by redox state of plastoquinone, and photoacclimation to blue-green light is related to the increased senstitivity of state transition.