LIGHT-SHADE ADAPTATION - 2 STRATEGIES IN MARINE-PHYTOPLANKTON
LIGHT-SHADE ADAPTATION - 2 STRATEGIES IN MARINE-PHYTOPLANKTON
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DOI：
10.1104/pp.66.4.592
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发表时间：
1980-01-01
期刊：
影响因子：
7.4
通讯作者：
OWENS, TG
中科院分区：
文献类型：
--
作者：
FALKOWSKI, PG;OWENS, TG
Using chlorophyll/P700 ratios, the size and number of photosynthetic units were estimated, as a function of light-shade adaptation in 2 spp. of marine phytoplankton: Skeletonema costatum, a diatom and Dunaliella tertiolecta, a chlorophyte. In the diatom, light-shade adaptation is characterized primarily by changes in the size and not the number of P700 units, whereas in the chlorophyte, overall changes in chlorophyll content are related to changes in the number and not the size of P700 units. A correlation between the characteristics of P700 units and photosynthetic responses was not established. Both strategies of light-shade adaptation effectively harvest and transfer light energy to reaction centers, the Skeletonema strategy is more effective at subsaturating intensities. The 2 strategies may represent an evolutionary divergence in photosynthetic adaptation to variations in light intensity.
