Abstract
Glufosinate was a herbicide and wildly used in farm. Here is present that effects of glufosinate on photosynthesis of non- or bar- transgenic rice (Oryza sativa L.). Glutamine synthetase (GS) activity (Fig.1)in leaves of non-resistant rice Cypress was inhibited 4 hours after spraying 1.0% glufosinate. Accumulation of free ammonia (Fig.2) increased. Chlorophyll content (Fig.3), intrinsic efficiency of PS II photo-chemistry (F v/F m)(Fig.5),quantum yield of photosystem II ectron transport(ΦPS II and coefficient for photochemical quenching (q p) of leaf chlorophyll fluorescence were decreased significantly. Photosynthetic rate (Fig.4) was delined. Finally the seedlings of Cypress were dead after spraying 1.0% glufosinate. Glutamine synthetase (GS) activity in leaves of bar-transgenic rice Cypress PB-6 was also inhibited by spraying 1.0% glufosinate, but GS activity recovered after 36 hours by spraying glufosinate, then the level of free ammonia decreased. The effects of glufosinate on chlorophyll content (Fig.3), intrinsic efficiency of PS II photochemistry (F v/F m)(Fig.5),ΦPS II of PS II,coefficient for photochemical quenching (q p) of leaf chlorophyll fluorescence were relieved. Photosynthetic rate was recovered (Fig.4). The seedlings of Cypress PB-6 grow normally. This results showed that the expression of bar gene activated by Act1 promoter in transgenic rice degraded the glufosinate, then relieved the poison of NH + 4 to photosynthesis of the bar-transgenic rice.
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Claims 9
Claim · model-written summary
Glufosinate inhibited glutamine synthetase activity in Cypress leaves four hours after spraying.
- Taxon
- rice
Oryza sativat0 - Material
- Cypresse0
- Organ / stage
- leavese0
- Treatment
- spraying 1.0% glufosinatee0
- Gene
- Glutamine synthetase (GS)e0
- Outcome
- Glutamine synthetase (GS) activitye0
- Direction
- inhibitede0
- Qualifier
- 4 hourse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glutamine synthetase (GS) activity (Fig.1)in leaves of non-resistant rice Cypress was inhibited 4 hours after spraying 1.0% glufosinate”
t0“Rice”
Claim · model-written summary
Cypress seedlings died after 1.0% glufosinate spraying.
- Taxon
- riceOryza sativat0
- Material
- Cypresse0
- Treatment
- spraying 1.0% glufosinatee0
- Outcome
- seedlings of Cypress were deade0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the seedlings of Cypress were dead after spraying 1.0% glufosinate”
t0“Rice”
Claim · model-written summary
Glufosinate initially inhibited GS activity in Cypress PB-6 leaves.
- Taxon
- riceOryza sativat0
- Material
- Cypress PB-6e0
- Organ / stage
- leavese0
- Treatment
- spraying 1.0% glufosinatee0
- Gene
- Glutamine synthetase (GS)e0
- Outcome
- Glutamine synthetase (GS) activitye0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glutamine synthetase (GS) activity in leaves of bar-transgenic rice Cypress PB-6 was also inhibited by spraying 1.0% glufosinate”
t0“Rice”
Claim · model-written summary
GS activity in Cypress PB-6 recovered 36 hours after glufosinate spraying.
- Taxon
- riceOryza sativat0
- Treatment
- spraying glufosinatee0
- Outcome
- GS activitye0
- Direction
- recoverede0
- Qualifier
- 36 hourse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GS activity recovered after 36 hours by spraying glufosinate”
t0“Rice”
Claim · model-written summary
Free ammonia level then decreased in Cypress PB-6.
- Taxon
- riceOryza sativat0
- Treatment
- glufosinatee1
- Outcome
- level of free ammoniae0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“then the level of free ammonia decreased”
t0“Rice”
e1“by spraying 1.0% glufosinate”
Claim · model-written summary
Glufosinate effects on chlorophyll content and PSII fluorescence metrics were relieved in Cypress PB-6.
- Taxon
- riceOryza sativat0
- Treatment
- glufosinatee0
- Outcome
- chlorophyll content (Fig.3), intrinsic efficiency of PS II photochemistry (F v/F m)(Fig.5),ΦPS II of PS II,coefficient for photochemical quenching (q p) of leaf chlorophyll fluorescencee0
- Direction
- relievede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of glufosinate on chlorophyll content (Fig.3), intrinsic efficiency of PS II photochemistry (F v/F m)(Fig.5),ΦPS II of PS II,coefficient for photochemical quenching (q p) of leaf chlorophyll fluorescence were relieved”
t0“Rice”
Claim · model-written summary
Photosynthetic rate recovered in Cypress PB-6.
- Taxon
- riceOryza sativat0
- Treatment
- glufosinatee1
- Outcome
- Photosynthetic ratee0
- Direction
- recoverede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photosynthetic rate was recovered (Fig.4)”
t0“Rice”
e1“by spraying 1.0% glufosinate”
Claim · model-written summary
Cypress PB-6 seedlings grew normally after glufosinate exposure.
- Taxon
- riceOryza sativat0
- Material
- Cypress PB-6e0
- Treatment
- glufosinatee1
- Outcome
- seedlings of Cypress PB-6 grow normallye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The seedlings of Cypress PB-6 grow normally”
t0“Rice”
e1“by spraying 1.0% glufosinate”
Claim · model-written summary
The authors attributed relief of glufosinate toxicity to Act1-driven bar expression degrading glufosinate.
- Taxon
- riceOryza sativae0
- Treatment
- glufosinatee0
- Gene
- bar genee0
- Outcome
- relieved the poison of NH + 4 to photosynthesise0
- Direction
- relievede0
- Qualifier
- activated by Act1 promotere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the expression of bar gene activated by Act1 promoter in transgenic rice degraded the glufosinate, then relieved the poison of NH + 4 to photosynthesis of the bar-transgenic rice”
The same questions in other papers
application · organism · Oryza sativa (rice)Positive and negative results
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- no effect
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See all 75 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.