Abstract
Triazine resistance in a mutant biotype of Phalaris paradoxa is accompanied by changes in the chlorophyll fluorescence induction curve, and by reduced quantum yield for electron transport, indicating altered photosystem II activity. However, light-saturated rates of electron transport in isolated chloroplasts, rates of CO 2 uptake in leaves and dry weight production of the triazine resistant biotype, are equal or superior to those of the wild type. A single mutation in the psbA gene, leading to a serine to glycine shift at position 264 of the thylakoid membrane 32 kDa Q в - protein. was found in the herbicide resistant mutant. The results indicate that triazine resistance is not necessarily linked to inferior photosynthetic and growth performance.
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Claims 4
Claim · model-written summary
The resistant biotype had changes in chlorophyll fluorescence induction.
- Taxon
- Phalaris paradoxa
Phalaris paradoxae0 - Material
- mutant biotypee0
- Outcome
- changes in the chlorophyll fluorescence induction curvee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Triazine resistance in a mutant biotype of Phalaris paradoxa is accompanied by changes in the chlorophyll fluorescence induction curve”
Claim · model-written summary
The resistant biotype had reduced quantum yield for electron transport.
- Taxon
- Phalaris paradoxaPhalaris paradoxae0
- Material
- mutant biotypee0
- Outcome
- quantum yield for electron transporte0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Triazine resistance in a mutant biotype of Phalaris paradoxa is accompanied by changes in the chlorophyll fluorescence induction curve, and by reduced quantum yield for electron transport”
Claim · model-written summary
Light-saturated electron transport, leaf CO 2 uptake and dry weight of the resistant biotype were equal or superior to wild type.
- Taxon
- Phalaris paradoxaPhalaris paradoxat0
- Material
- triazine resistant biotypee0
- Outcome
- light-saturated rates of electron transport in isolated chloroplasts, rates of CO 2 uptake in leaves and dry weight productione0
- Direction
- equal or superiore0
- Comparator
- wild typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“light-saturated rates of electron transport in isolated chloroplasts, rates of CO 2 uptake in leaves and dry weight production of the triazine resistant biotype, are equal or superior to those of the wild type”
t0“Phalaris paradoxa”
Claim · model-written summary
A psbA mutation caused a serine to glycine shift at position 264 in the resistant mutant.
- Taxon
- Phalaris paradoxaPhalaris paradoxat0
- Material
- herbicide resistant mutante0
- Gene
- psbA genee0
- Outcome
- serine to glycine shift at position 264e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A single mutation in the psbA gene, leading to a serine to glycine shift at position 264 of the thylakoid membrane 32 kDa Q в - protein. was found in the herbicide resistant mutant.”
t0“Phalaris paradoxa”