The Origins of Nonphotochemical Quenching of Chlorophyll Fluorescence in Photosynthesis. Direct Quenching by P680+in Photosystem II Enriched Membranes at Low pH†

Biochemistry ◽  
1997 ◽  
Vol 36 (4) ◽  
pp. 749-755 ◽  
Author(s):  
Doug Bruce ◽  
Guy Samson ◽  
Christene Carpenter
Keyword(s):  
Chlorophyll Fluorescence ◽  
Photosystem Ii ◽  
Nonphotochemical Quenching ◽  
Low Ph ◽  
Direct Quenching

Tissue culture of the monocot

2014 ◽  
Vol 11 (2) ◽  
pp. 87-91
Author(s):  
Bolormaa Dogsom ◽  
Buyanchimeg Batsukh
Keyword(s):  
Tissue Culture ◽  
Chlorophyll Fluorescence ◽  
Rna Interference ◽  
Photosystem Ii ◽  
Transgenic Rice ◽  
Protein Level ◽  
Nonphotochemical Quenching ◽  
Rt Pcr ◽  
Specific Primers ◽  
Transcript Levels

PsbS is a 22-kDa protein of photosystem II involved in nonphotochemical quenching of chlorophyll fluorescence but the mechanism is still unclear. We designed and generated transgenic rice plants with significantly reduced PsbS1 protein level using RNA interference (RNAi). Transformation confirmed by vector-specific primers and transformants were screened by RT-PCR for OsPsbS1 transcript levels and PsbS1 protein level. We could identify three PsbS1-RNAi lines. DOI: http://dx.doi.org/10.5564/mjas.v11i2.225 Mongolian Journal of Agricultural Sciences Vol.11(2) 2013 pp.87-91

The Relationship between the Binding of Dicyclohexylcarbodiimide and Quenching of Chlorophyll Fluorescence in the Light-Harvesting Proteins of Photosystem II†

Biochemistry ◽  
1998 ◽  
Vol 37 (33) ◽  
pp. 11586-11591 ◽  
Author(s):  
Alexander V. Ruban ◽  
Paolo Pesaresi ◽  
Ulrich Wacker ◽  
Klaus-Dieter J. Irrgang ◽  
Roberto Bassi ◽  
...  
Keyword(s):  
Chlorophyll Fluorescence ◽  
Photosystem Ii ◽  
Light Harvesting ◽  
The Relationship

Variation among slash pine families in chlorophyll fluorescence traits

2003 ◽  
Vol 33 (6) ◽  
pp. 1102-1109 ◽  
Author(s):  
Anita C Koehn ◽  
James H Roberds ◽  
Robert L Doudrick
Keyword(s):  
Photosystem Ii ◽  
Growth Traits ◽  
Pinus Elliottii ◽  
Nonphotochemical Quenching ◽  
Slash Pine ◽  
Photochemical Quenching ◽  
Full Sibling ◽  
Pretreatment Effects ◽  
Pattern Of Variation ◽  
Variance Profile

Photochemical quenching, nonphotochemical quenching, and yield of photosystem II were measured on seedlings of full-sibling, open-, and self-pollinated slash pine (Pinus elliottii Engelm. var. elliottii) families. Our results reveal that genetic variation in photochemical quenching and yield of photosystem II exists within this species. The pattern of variation found in these traits is consistent with the variance profile expected to occur as a result of segregation among nuclear genes. Variation among families accounted for 17% of the total variation observed in photochemical quenching, whereas the component for trees within families made up slightly more than 25% of the total. Less variation, both among families as well as among trees within families, was found for yield of photosystem II. A strikingly different pattern was observed for nonphotochemical quenching. Other than the error term, only pretreatment effects contributed significantly to the variation observed. This suggests that nonphotochemical quenching is largely influenced by environmental factors. With regard to associations between fluorescence and growth traits, both height and diameter growth were found to be positively correlated with photochemical quenching (0.36 and 0.33, respectively) when selfed and open-pollinated families were analyzed along with control-pollinated families.

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