TY - JOUR
T1 - Triazine Resistance in Phalaris Paradoxa
T2 - Physiological and Molecular Analyses
AU - Schönfeld, Mordechay
AU - Yaacoby, Tuvia
AU - Ben-Yehuda, Adi
AU - Rubin, Baruch
AU - Hirschberg, Joseph
PY - 1987/8/1
Y1 - 1987/8/1
N2 - 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. H owever, light-saturated rates of electron transport in isolated chloroplasts, rates ofCO2; 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 QB protein, was found in the herbicide resistant mutant. The results indicate that triazine resistance is not necessarily linked to inferior photosynthetic and growth performance.
AB - 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. H owever, light-saturated rates of electron transport in isolated chloroplasts, rates ofCO2; 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 QB protein, was found in the herbicide resistant mutant. The results indicate that triazine resistance is not necessarily linked to inferior photosynthetic and growth performance.
KW - Chloroplast
KW - Herbicide Resistance
KW - Phalaris paradoxa
KW - Photosynthesis
KW - Photosystem II
KW - psbA Gene
UR - http://www.scopus.com/inward/record.url?scp=0008672932&partnerID=8YFLogxK
U2 - 10.1515/znc-1987-7-806
DO - 10.1515/znc-1987-7-806
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AN - SCOPUS:0008672932
SN - 0939-5075
VL - 42
SP - 779
EP - 782
JO - Zeitschrift fur Naturforschung - Section C Journal of Biosciences
JF - Zeitschrift fur Naturforschung - Section C Journal of Biosciences
IS - 7-8
ER -