ISSN:
1573-5079
Keywords:
photosynthesis
;
Rubisco
;
ozone
;
oxidative stress
;
rbcS mRNA
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Ozone induces reductions in net photosynthesis in a large number of plant species. A primary mechanism by which photosynthesis is reduced is through impact on carbon dioxide fixation. Ozone induces loss in Rubisco activity associated with loss in concentration of the protein. Evidence is presented that ozone may induce oxidative modification of Rubisco leading to subsequent proteolysis. In addition, plants exposed to ozone sustain reduction in rbcS, the mRNA for the small subunit of Rubisco. This loss in rbcS mRNA may lead to a reduced potential for synthesis of the protein. The regulation of O3-induced loss of Rubisco, and implications of the decline in this protein in relation to accelerated senescence are discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00014598
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