Beale S I, Appleman D
Department of Botanical Sciences, University of California, Los Angeles, California 90024.
Plant Physiol. 1971 Feb;47(2):230-5. doi: 10.1104/pp.47.2.230.
The degree of light limitation of growth is the primary controlling factor of chlorophyll synthesis during photoautotrophic growth of Chlorella. The chlorophyll content of the cells increases when light is limiting for growth as occurs in dense cultures, or in cultures under low incident light, or when the light is used less efficiently through partial inhibition of photosynthesis by 3-(p-chlorophenyl)-1, 1-dimethylurea. The chlorophyll content decreases when light is not limiting for growth, as occurs in cells in high light intensity and in dilute suspensions. The initial lag in rate of chlorophyll synthesis in a freshly inoculated culture can be attributed to light at first not being growth limiting, and then becoming growth limiting as the cell suspension becomes denser. Continuous culture experiments support the above conclusions by showing that under steady state conditions the chlorophyll content is inversely related to the relative available light.
在小球藻光合自养生长过程中，光照对生长的限制程度是叶绿素合成的主要控制因素。当光照限制生长时，细胞的叶绿素含量会增加，如在高密度培养物中、低入射光条件下的培养物中，或者当光合作用因3-(对氯苯基)-1,1-二甲基脲的部分抑制而效率降低时。当光照不限制生长时，叶绿素含量会降低，如在高光强的细胞和稀悬浮液中。新接种培养物中叶绿素合成速率最初的延迟可归因于最初光照不限制生长，然后随着细胞悬浮液变浓，光照变得限制生长。连续培养实验通过表明在稳态条件下叶绿素含量与相对可用光呈负相关，支持了上述结论。
