Abstract
The photosynthetic characteristics of strawberry (Fragariaananassa Duch. cv. Toyonoka)leaves under illumination of identical light intensity(55-57% natural light) withdifferent light quality were studied. It was showed that the chlorophyll content,maximal photochemical efficiency of PSⅡ(Fv/Fm), Fm/Fo, amount of inactive PSⅡreactioncenters (Fi-Fo) and rate of QA reduction were positively correlated with the red-light/blue-light ratios, but the chlorophyll (a/b) ratios were negatively correlated withthem. Carotenoid content of the leaves was maximum under the blue film, than under greenfilm, red film, white film and yellow film, and negatively correlated with the red/far-red ratios. The apparent quantum yield (AQY), photorespiratory rate (Pr) and carboxylationefficiency (CE) were also strongly affected by light quality. The photosynthetic rate(Pn) in strawberry leaves under green film was significantly lower than under all otherfilm. Our results suggested that light quality is an essential factor regulating thedevelopment of PSⅡ, and phytochrome and an independent blue light photoreceptor,possibly a cryptochrome, can regulate photosynthetic performance.
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Claims 9
Claim · model-written summary
Chlorophyll content, maximal PSⅡ efficiency and Fm/Fo were positively correlated with red to blue light ratio.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassae0 - Material
- Toyonokae0
- Organ / stage
- leavese0
- Treatment
- red-light/blue-light ratiose1
- Outcome
- chlorophyll content,maximal photochemical efficiency of PSⅡ(Fv/Fm), Fm/Foe1
- Direction
- positively correlatede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“strawberry (Fragariaananassa Duch. cv. Toyonoka)leaves”
e1“the chlorophyll content,maximal photochemical efficiency of PSⅡ(Fv/Fm), Fm/Fo, amount of inactive PSⅡreactioncenters (Fi-Fo) and rate of QA reduction were positively correlated with the red-light/blue-light ratios”
Claim · model-written summary
Inactive PSⅡ reaction centers and QA reduction rate were positively correlated with red to blue light ratio.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- red-light/blue-light ratiose1
- Outcome
- amount of inactive PSⅡreactioncenters (Fi-Fo) and rate of QA reductione1
- Direction
- positively correlatede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strawberry (Fragariaananassa Duch. cv. Toyonoka)leaves”
e1“amount of inactive PSⅡreactioncenters (Fi-Fo) and rate of QA reduction were positively correlated with the red-light/blue-light ratios”
Claim · model-written summary
Chlorophyll a/b ratio was negatively correlated with red to blue light ratio.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- red-light/blue-light ratiose2
- Outcome
- chlorophyll (a/b) ratiose1
- Direction
- negatively correlatede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strawberry (Fragariaananassa Duch. cv. Toyonoka)leaves”
e1“the chlorophyll (a/b) ratios were negatively correlated withthem”
e2“red-light/blue-light ratios”
Claim · model-written summary
Leaf carotenoid content was greatest under blue film.
- Taxon
- strawberryFragaria ×ananassae0
- Organ / stage
- leavese1
- Treatment
- blue filme1
- Outcome
- Carotenoid contente1
- Direction
- maximume1
- Comparator
- greenfilm, red film, white film and yellow filme1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strawberry (Fragariaananassa Duch. cv. Toyonoka)leaves”
e1“Carotenoid content of the leaves was maximum under the blue film, than under greenfilm, red film, white film and yellow film”
Claim · model-written summary
Leaf carotenoid content was negatively correlated with red to far red ratio.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- red/far-red ratiose1
- Outcome
- Carotenoid contente1
- Direction
- negatively correlatede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strawberry (Fragariaananassa Duch. cv. Toyonoka)leaves”
e1“Carotenoid content of the leaves was maximum under the blue film, than under greenfilm, red film, white film and yellow film, and negatively correlated with the red/far-red ratios”
Claim · model-written summary
Apparent quantum yield, photorespiratory rate and carboxylation efficiency were strongly affected by light quality.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- light qualitye1
- Outcome
- apparent quantum yield (AQY), photorespiratory rate (Pr) and carboxylationefficiency (CE)e1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strawberry (Fragariaananassa Duch. cv. Toyonoka)leaves”
e1“The apparent quantum yield (AQY), photorespiratory rate (Pr) and carboxylationefficiency (CE) were also strongly affected by light quality”
Claim · model-written summary
Photosynthetic rate under green film was significantly lower than under every other film.
- Taxon
- strawberryFragaria ×ananassae0
- Organ / stage
- leavese1
- Treatment
- green filme1
- Outcome
- photosynthetic rate(Pn)e1
- Direction
- lowere1
- Comparator
- all otherfilme1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strawberry (Fragariaananassa Duch. cv. Toyonoka)leaves”
e1“The photosynthetic rate(Pn) in strawberry leaves under green film was significantly lower than under all otherfilm”
Claim · model-written summary
The authors suggested light quality regulates PSⅡ development.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- light qualitye1
- Outcome
- development of PSⅡe1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strawberry (Fragariaananassa Duch. cv. Toyonoka)leaves”
e1“light quality is an essential factor regulating thedevelopment of PSⅡ”
Claim · model-written summary
The authors suggested phytochrome and an independent blue light photoreceptor can regulate photosynthetic performance.
- Taxon
- strawberryFragaria ×ananassae0
- Gene
- phytochromee1
- Outcome
- photosynthetic performancee1
- Qualifier
- possibly a cryptochromee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strawberry (Fragariaananassa Duch. cv. Toyonoka)leaves”
e1“phytochrome and an independent blue light photoreceptor,possibly a cryptochrome, can regulate photosynthetic performance”