Abstract
Effect of glyphosate on photosynthesis and chlorophyll fluorescence parameters of leaves of glyphosateresistant soybean seedlings( RR1) under phosphorus deficiency stress was studied using a solution culture experiment under phosphorus deficiency stress at the true leaf stage. The glyphosate at 4. 98 ml / L was sprayed at the two-trifoliolate leaf stage,and physiological indexes were analyzed 5 days after the glyphosate spraying. The results show that under the phosphorus deficiency stress,the photosynthetic rate( Pn),stomatal conductance( Gs),intercellular CO 2 concentration( Ci),maximum fluorescence( F m),PSII maximum quantum yield( F v / F m),PSII effective quantum yield[Y( Ⅱ) ],PS II energy dissipation in non-regulatory quantum yield[Y( NO) ], half saturation light intensity( I K) and maximum electron transport rate( ETR max) in leaves of RR1 treated by 4. 98 ml / L glyphosate are lower than those treated by water under normal phosphorus condition,while the stomatal limitation value( Ls),chlorophyll a( Chl a),chlorophyll b( Chl b),chlorophyll a / b( Chl a / b),carotenoid( Car),total chlorophyll( Chl) content and regulation of PSⅡ quantum yield of energy dissipation[Y( NPQ) ] treated by glyphosate under phosphorus deficiency stress are higher than those treated by water under normal phosphorus conditions. It suggests that spraying herbicide glyphosate under phosphorus deficiency stress decreases photosynthetic rate in leaves of Roundup Ready Soybean significantly. The stomatal limitation resulted from phosphorus deficiency stress may be the main reason for the decline of photosynthetic rate,and the decreased photosynthetic rate leads to reduce the openness of PSⅡ reaction center,PSⅡ activity,electrons in CO 2 fixation and photochemical efficiency.
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Claims 18
Claim · model-written summary
Glyphosate under phosphorus deficiency lowered photosynthetic rate relative to water under normal phosphorus.
- Taxon
- soybean
Glycine maxt0 - Material
- RR1e0
- Treatment
- 4. 98 ml / L glyphosatee0
- Outcome
- photosynthetic ratee0
- Direction
- lowere0
- Comparator
- water under normal phosphorus conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the photosynthetic rate( Pn),stomatal conductance( Gs),intercellular CO 2 concentration( Ci),maximum fluorescence( F m),PSII maximum quantum yield( F v / F m),PSII effective quantum yield[Y( Ⅱ) ],PS II energy dissipation in non-regulatory quantum yield[Y( NO) ], half saturation light intensity( I K) and maximum electron transport rate( ETR max) in leaves of RR1 treated by 4. 98 ml / L glyphosate are lower than those treated by water under normal phosphorus condition”
t0“glyphosate-resistant soybean”
Claim · model-written summary
Glyphosate under phosphorus deficiency lowered stomatal conductance relative to water under normal phosphorus.
- Taxon
- soybeanGlycine maxt0
- Material
- RR1e0
- Treatment
- 4. 98 ml / L glyphosatee0
- Outcome
- stomatal conductancee0
- Direction
- lowere0
- Comparator
- water under normal phosphorus conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the photosynthetic rate( Pn),stomatal conductance( Gs),intercellular CO 2 concentration( Ci),maximum fluorescence( F m),PSII maximum quantum yield( F v / F m),PSII effective quantum yield[Y( Ⅱ) ],PS II energy dissipation in non-regulatory quantum yield[Y( NO) ], half saturation light intensity( I K) and maximum electron transport rate( ETR max) in leaves of RR1 treated by 4. 98 ml / L glyphosate are lower than those treated by water under normal phosphorus condition”
t0“glyphosate-resistant soybean”
Claim · model-written summary
Glyphosate under phosphorus deficiency lowered intercellular CO 2 concentration relative to water under normal phosphorus.
- Taxon
- soybeanGlycine maxt0
- Material
- RR1e0
- Treatment
- 4. 98 ml / L glyphosatee0
- Outcome
- intercellular CO 2 concentratione0
- Direction
- lowere0
- Comparator
- water under normal phosphorus conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the photosynthetic rate( Pn),stomatal conductance( Gs),intercellular CO 2 concentration( Ci),maximum fluorescence( F m),PSII maximum quantum yield( F v / F m),PSII effective quantum yield[Y( Ⅱ) ],PS II energy dissipation in non-regulatory quantum yield[Y( NO) ], half saturation light intensity( I K) and maximum electron transport rate( ETR max) in leaves of RR1 treated by 4. 98 ml / L glyphosate are lower than those treated by water under normal phosphorus condition”
t0“glyphosate-resistant soybean”
Claim · model-written summary
Glyphosate under phosphorus deficiency lowered maximum fluorescence relative to water under normal phosphorus.
- Taxon
- soybeanGlycine maxt0
- Material
- RR1e0
- Treatment
- 4. 98 ml / L glyphosatee0
- Outcome
- maximum fluorescencee0
- Direction
- lowere0
- Comparator
- water under normal phosphorus conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the photosynthetic rate( Pn),stomatal conductance( Gs),intercellular CO 2 concentration( Ci),maximum fluorescence( F m),PSII maximum quantum yield( F v / F m),PSII effective quantum yield[Y( Ⅱ) ],PS II energy dissipation in non-regulatory quantum yield[Y( NO) ], half saturation light intensity( I K) and maximum electron transport rate( ETR max) in leaves of RR1 treated by 4. 98 ml / L glyphosate are lower than those treated by water under normal phosphorus condition”
t0“glyphosate-resistant soybean”
Claim · model-written summary
Glyphosate under phosphorus deficiency lowered PSII maximum quantum yield relative to water under normal phosphorus.
- Taxon
- soybeanGlycine maxt0
- Material
- RR1e0
- Treatment
- 4. 98 ml / L glyphosatee0
- Outcome
- PSII maximum quantum yielde0
- Direction
- lowere0
- Comparator
- water under normal phosphorus conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the photosynthetic rate( Pn),stomatal conductance( Gs),intercellular CO 2 concentration( Ci),maximum fluorescence( F m),PSII maximum quantum yield( F v / F m),PSII effective quantum yield[Y( Ⅱ) ],PS II energy dissipation in non-regulatory quantum yield[Y( NO) ], half saturation light intensity( I K) and maximum electron transport rate( ETR max) in leaves of RR1 treated by 4. 98 ml / L glyphosate are lower than those treated by water under normal phosphorus condition”
t0“glyphosate-resistant soybean”
Claim · model-written summary
Glyphosate under phosphorus deficiency lowered PSII effective quantum yield relative to water under normal phosphorus.
- Taxon
- soybeanGlycine maxt0
- Material
- RR1e0
- Treatment
- 4. 98 ml / L glyphosatee0
- Outcome
- PSII effective quantum yielde0
- Direction
- lowere0
- Comparator
- water under normal phosphorus conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the photosynthetic rate( Pn),stomatal conductance( Gs),intercellular CO 2 concentration( Ci),maximum fluorescence( F m),PSII maximum quantum yield( F v / F m),PSII effective quantum yield[Y( Ⅱ) ],PS II energy dissipation in non-regulatory quantum yield[Y( NO) ], half saturation light intensity( I K) and maximum electron transport rate( ETR max) in leaves of RR1 treated by 4. 98 ml / L glyphosate are lower than those treated by water under normal phosphorus condition”
t0“glyphosate-resistant soybean”
Claim · model-written summary
Glyphosate under phosphorus deficiency lowered PS II energy dissipation in non-regulatory quantum yield relative to water under normal phosphorus.
- Taxon
- soybeanGlycine maxt0
- Material
- RR1e0
- Treatment
- 4. 98 ml / L glyphosatee0
- Outcome
- PS II energy dissipation in non-regulatory quantum yielde0
- Direction
- lowere0
- Comparator
- water under normal phosphorus conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the photosynthetic rate( Pn),stomatal conductance( Gs),intercellular CO 2 concentration( Ci),maximum fluorescence( F m),PSII maximum quantum yield( F v / F m),PSII effective quantum yield[Y( Ⅱ) ],PS II energy dissipation in non-regulatory quantum yield[Y( NO) ], half saturation light intensity( I K) and maximum electron transport rate( ETR max) in leaves of RR1 treated by 4. 98 ml / L glyphosate are lower than those treated by water under normal phosphorus condition”
t0“glyphosate-resistant soybean”
Claim · model-written summary
Glyphosate under phosphorus deficiency lowered half saturation light intensity relative to water under normal phosphorus.
- Taxon
- soybeanGlycine maxt0
- Material
- RR1e0
- Treatment
- 4. 98 ml / L glyphosatee0
- Outcome
- half saturation light intensitye0
- Direction
- lowere0
- Comparator
- water under normal phosphorus conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the photosynthetic rate( Pn),stomatal conductance( Gs),intercellular CO 2 concentration( Ci),maximum fluorescence( F m),PSII maximum quantum yield( F v / F m),PSII effective quantum yield[Y( Ⅱ) ],PS II energy dissipation in non-regulatory quantum yield[Y( NO) ], half saturation light intensity( I K) and maximum electron transport rate( ETR max) in leaves of RR1 treated by 4. 98 ml / L glyphosate are lower than those treated by water under normal phosphorus condition”
t0“glyphosate-resistant soybean”
Claim · model-written summary
Glyphosate under phosphorus deficiency lowered maximum electron transport rate relative to water under normal phosphorus.
- Taxon
- soybeanGlycine maxt0
- Material
- RR1e0
- Treatment
- 4. 98 ml / L glyphosatee0
- Outcome
- maximum electron transport ratee0
- Direction
- lowere0
- Comparator
- water under normal phosphorus conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the photosynthetic rate( Pn),stomatal conductance( Gs),intercellular CO 2 concentration( Ci),maximum fluorescence( F m),PSII maximum quantum yield( F v / F m),PSII effective quantum yield[Y( Ⅱ) ],PS II energy dissipation in non-regulatory quantum yield[Y( NO) ], half saturation light intensity( I K) and maximum electron transport rate( ETR max) in leaves of RR1 treated by 4. 98 ml / L glyphosate are lower than those treated by water under normal phosphorus condition”
t0“glyphosate-resistant soybean”
Claim · model-written summary
Glyphosate under phosphorus deficiency raised stomatal limitation value relative to water under normal phosphorus.
- Taxon
- soybeanGlycine maxt0
- Treatment
- glyphosate under phosphorus deficiency stresse0
- Outcome
- stomatal limitation valuee0
- Direction
- highere0
- Comparator
- water under normal phosphorus conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the stomatal limitation value( Ls),chlorophyll a( Chl a),chlorophyll b( Chl b),chlorophyll a / b( Chl a / b),carotenoid( Car),total chlorophyll( Chl) content and regulation of PSⅡ quantum yield of energy dissipation[Y( NPQ) ] treated by glyphosate under phosphorus deficiency stress are higher than those treated by water under normal phosphorus conditions”
t0“glyphosate-resistant soybean”
Claim · model-written summary
Glyphosate under phosphorus deficiency raised chlorophyll a relative to water under normal phosphorus.
- Taxon
- soybeanGlycine maxt0
- Treatment
- glyphosate under phosphorus deficiency stresse0
- Outcome
- chlorophyll ae0
- Direction
- highere0
- Comparator
- water under normal phosphorus conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the stomatal limitation value( Ls),chlorophyll a( Chl a),chlorophyll b( Chl b),chlorophyll a / b( Chl a / b),carotenoid( Car),total chlorophyll( Chl) content and regulation of PSⅡ quantum yield of energy dissipation[Y( NPQ) ] treated by glyphosate under phosphorus deficiency stress are higher than those treated by water under normal phosphorus conditions”
t0“glyphosate-resistant soybean”
Claim · model-written summary
Glyphosate under phosphorus deficiency raised chlorophyll b relative to water under normal phosphorus.
- Taxon
- soybeanGlycine maxt0
- Treatment
- glyphosate under phosphorus deficiency stresse0
- Outcome
- chlorophyll be0
- Direction
- highere0
- Comparator
- water under normal phosphorus conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the stomatal limitation value( Ls),chlorophyll a( Chl a),chlorophyll b( Chl b),chlorophyll a / b( Chl a / b),carotenoid( Car),total chlorophyll( Chl) content and regulation of PSⅡ quantum yield of energy dissipation[Y( NPQ) ] treated by glyphosate under phosphorus deficiency stress are higher than those treated by water under normal phosphorus conditions”
t0“glyphosate-resistant soybean”
Claim · model-written summary
Glyphosate under phosphorus deficiency raised chlorophyll a / b relative to water under normal phosphorus.
- Taxon
- soybeanGlycine maxt0
- Treatment
- glyphosate under phosphorus deficiency stresse0
- Outcome
- chlorophyll a / be0
- Direction
- highere0
- Comparator
- water under normal phosphorus conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the stomatal limitation value( Ls),chlorophyll a( Chl a),chlorophyll b( Chl b),chlorophyll a / b( Chl a / b),carotenoid( Car),total chlorophyll( Chl) content and regulation of PSⅡ quantum yield of energy dissipation[Y( NPQ) ] treated by glyphosate under phosphorus deficiency stress are higher than those treated by water under normal phosphorus conditions”
t0“glyphosate-resistant soybean”
Claim · model-written summary
Glyphosate under phosphorus deficiency raised carotenoid relative to water under normal phosphorus.
- Taxon
- soybeanGlycine maxt0
- Treatment
- glyphosate under phosphorus deficiency stresse0
- Outcome
- carotenoide0
- Direction
- highere0
- Comparator
- water under normal phosphorus conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the stomatal limitation value( Ls),chlorophyll a( Chl a),chlorophyll b( Chl b),chlorophyll a / b( Chl a / b),carotenoid( Car),total chlorophyll( Chl) content and regulation of PSⅡ quantum yield of energy dissipation[Y( NPQ) ] treated by glyphosate under phosphorus deficiency stress are higher than those treated by water under normal phosphorus conditions”
t0“glyphosate-resistant soybean”
Claim · model-written summary
Glyphosate under phosphorus deficiency raised total chlorophyll relative to water under normal phosphorus.
- Taxon
- soybeanGlycine maxt0
- Treatment
- glyphosate under phosphorus deficiency stresse0
- Outcome
- total chlorophylle0
- Direction
- highere0
- Comparator
- water under normal phosphorus conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the stomatal limitation value( Ls),chlorophyll a( Chl a),chlorophyll b( Chl b),chlorophyll a / b( Chl a / b),carotenoid( Car),total chlorophyll( Chl) content and regulation of PSⅡ quantum yield of energy dissipation[Y( NPQ) ] treated by glyphosate under phosphorus deficiency stress are higher than those treated by water under normal phosphorus conditions”
t0“glyphosate-resistant soybean”
Claim · model-written summary
Glyphosate under phosphorus deficiency raised regulation of PSⅡ quantum yield of energy dissipation relative to water under normal phosphorus.
- Taxon
- soybeanGlycine maxt0
- Treatment
- glyphosate under phosphorus deficiency stresse0
- Outcome
- regulation of PSⅡ quantum yield of energy dissipatione0
- Direction
- highere0
- Comparator
- water under normal phosphorus conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the stomatal limitation value( Ls),chlorophyll a( Chl a),chlorophyll b( Chl b),chlorophyll a / b( Chl a / b),carotenoid( Car),total chlorophyll( Chl) content and regulation of PSⅡ quantum yield of energy dissipation[Y( NPQ) ] treated by glyphosate under phosphorus deficiency stress are higher than those treated by water under normal phosphorus conditions”
t0“glyphosate-resistant soybean”
Claim · model-written summary
The authors attribute the photosynthetic rate decline chiefly to stomatal limitation from phosphorus deficiency.
- Taxon
- soybeanGlycine maxt0
- Outcome
- decline of photosynthetic ratee0
- Qualifier
- stomatal limitation resulted from phosphorus deficiency stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The stomatal limitation resulted from phosphorus deficiency stress may be the main reason for the decline of photosynthetic rate”
t0“glyphosate-resistant soybean”
Claim · model-written summary
The authors link reduced photosynthesis to lower PSⅡ reaction center openness, activity, CO2-fixation electrons and photochemical efficiency.
- Taxon
- soybeanGlycine maxt0
- Outcome
- openness of PSⅡ reaction center,PSⅡ activity,electrons in CO 2 fixation and photochemical efficiencye0
- Qualifier
- decreased photosynthetic ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decreased photosynthetic rate leads to reduce the openness of PSⅡ reaction center,PSⅡ activity,electrons in CO 2 fixation and photochemical efficiency”
t0“glyphosate-resistant soybean”
The same questions in other papers
glyphosate · physiology: gas exchange · Glycine max (soybean)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
glyphosate · physiology: photosynthesis · Glycine max (soybean)Results agree
8 papers in the same direction as this paper
- no effect
- negative
- negative
5 papers more in this group
See all 9 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.