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DOI: | 10.1104/pp.76.4.903 |
Web URL(s): | http://www.plantphysiol.org/content/76/4/903.full.pdf+html Last checked: 08/08/2012 Requires: PDF Reader Access conditions: Item is within a limited access website |
Publication Type:
| Refereed |
Author(s): | Krueger, Roger W.;
Randall, Douglas D.;
Miles, Donald |
Author Affiliation: | Division of Biological Sciences and Department of Biochemistry, University of Missouri, Columbia, Missouri |
Title: | Analysis of high PSI activity in a decaploid genotype |
Article Series: | [Photosynthesis in tall fescue], part 5 |
Source: | Plant Physiology. Vol. 76, No. 4, December 1984, p. 903-909. |
Publishing Information: | Rockville, MD: American Society of Plant Physiologists |
# of Pages: | 7 |
Related Web URL: | http://www.plantphysiol.org/content/76/4/903.abstract Last checked: 08/08/2012 Notes: Abstract only |
Keywords: | TIC Keywords: Festuca arundinacea; Polyploidy; Photosynthesis; Antibodies
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Abstract/Contents: | "Previous work in our laboratory (Krueger, Miles 1981 Plant Physiol 68: 1110-1114) indicated that a decaploid genotype (I-16-2) of tall fescue (Festuca arundinacea Schreb.) which exhibits unusually high net photosynthesis rates also had high potential rates of photosynthetic electron transport through photosystem I (PSI) compared to the typical hexaploid genotype (V6-802). Analysis of electron transport activity revealed that the oxidizing side of PSI as the major site of difference. Examination of the whole thylakoids and subchloroplast particle protein components of the common hexaploid and the decaploid genotypes had major polypeptide differences at 30, 21, and 12.5 kilodaltons. These differences could not be assigned to a specific physiological function in PSI. The decaploid had increased P700 and plastocyanin content on a chlorophyll basis. Antibodies raised against fescue plastocyanin were used to quantitate plastocyanin in crude (Triton X-100) solubilized extracts of plant material. Results showed that the decaploid had 16% and 40% more plastocyanin on a weight and area basis, respectively. The antibodies did not inhibit electron transport (diaminodiurene to methyl viologen) in isolated thylakoids strengthening the hypothesis of plastocyanin as an internal mobile electron shuttle. The trend of inhibition of plastocyanin by KCN was similar in the two genotypes but the decaploid had 15 to 20% higher rates of electron flow under nearly all inhibiting conditions." |
Language: | English |
References: | 33 |
See Also: | See also part 1 "High rate of electron transport and phosphorylation in chloroplasts of hexaploid plants" Plant Physiology, 67(4) April 1981, p. 763-767, R=3832. R=3832
See also part 2 "Photosynthesis and ribulose-1, 5-bisphosphate carboxylase of polyploid tall fescue" Plant Physiology, 68(4) October 1981, p. 894-898, R=3703. R=3703
See also part 3 "Rates of electron transport in a polyploid series of tall fescue plants" Plant Physiology, 68(5) November 1981, p. 1110-1114, R=3818. R=3818
See also part 4 "Carbon assimilation pattern in two genotypes of tall fescue differing in net photosynthesis rates" Plant Physiology, 72(1) May 1983, p. 16-21, R=3855. R=3855 |
Note: | Figures Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Krueger, R. W., D. D. Randall, and D. Miles. 1984. Analysis of high PSI activity in a decaploid genotype. Plant Physiol. 76(4):p. 903-909. |
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| DOI: 10.1104/pp.76.4.903 |
| Web URL(s): http://www.plantphysiol.org/content/76/4/903.full.pdf+html Last checked: 08/08/2012 Requires: PDF Reader Access conditions: Item is within a limited access website |
| MSU catalog number: b2215281a |
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