Document Detail

Effects of Light and 3-(3,4-Dichlorophenyl)-1,1-Dimethylurea on Levels of ATP in Lemna paucicostata 6746 and a Photosynthetic Mutant with Abnormal Flowering Responses.
MedLine Citation:
PMID:  16660764     Owner:  NLM     Status:  PubMed-not-MEDLINE    
The effects of light, 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU), and ammonium ion on pool sizes of ATP were studied in Lemna paucicostata 6746 (wild type) and a photosynthetic mutant (strain 1073) with abnormal flowering responses. Wild type fronds were capable of endogenous and phenazine methosulfate-catalyzed cyclic photophosphorylation. The endogenous cyclic photophosphorylation was inhibited by DCMU. The mutant fronds showed little endogenous but appreciable rates of phenazine methosulfate-catalyzed cyclic photophosphorylation. Treatment with DCMU during prolonged exposure to light did not result in elevated levels of ATP. Ammonium ion in the medium did not inhibit light-induced increases in pool sizes of ATP. It is concluded that the previously reported effects on flowering of DCMU, the photosynthetic mutation or ammonium ion, were not due to altered pool sizes of ATP.
R A Gower; H B Posner
Related Documents :
16666644 - Photosynthetic apparatus of pea thylakoid membranes : response to growth light intensity.
23555794 - Direct and indirect effects of climate on demography and early growth of pinus sylvestr...
21721854 - Varying the length of dim nocturnal illumination differentially affects the pacemaker c...
23862804 - Quantifying scattered sound energy from a single tree by means of reverberation time.
300504 - Photoreceptor outer segments: accelerated membrane renewal in rods after exposure to li...
18506434 - Stimulus-driven selection of routes to imitation.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Plant physiology     Volume:  63     ISSN:  0032-0889     ISO Abbreviation:  Plant Physiol.     Publication Date:  1979 Mar 
Date Detail:
Created Date:  2010-06-29     Completed Date:  2010-06-29     Revised Date:  2010-09-15    
Medline Journal Info:
Nlm Unique ID:  0401224     Medline TA:  Plant Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  548-51     Citation Subset:  -    
Department of Biological Sciences, State University of New York, Binghamton, New York 13901.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Ontogeny of Photosynthetic Performance in Fragaria virginiana under Changing Light Regimes.
Next Document:  Abscisic Acid Accumulation in Developing Seeds of Phaseolus vulgaris L.