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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
4
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pubmed:dateCreated |
2010-6-29
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pubmed:abstractText |
3-Phosphoglycerate phosphatase and phosphoglycolate phosphatase were found in leaves of all 52 plants examined. Activities of both phosphatases varied widely between 1 to 20 micromoles per minute per milligram chlorophyll. Plants were grouped into two categories based upon the relative ratio of activity of 3-phosphoglycerate phosphatase to phosphoglycolate phosphatase. This ratio varied between 2:1 to 4:1 in the C(4)-plants except corn leaves which had a low level of 3-phosphoglycerate phosphatase. This ratio was reversed and varied between 1:2 to 1:6 in all C(3)-plants except one bean variety which had large amounts of both phosphatases. By differential grinding procedures for C(4) plants a major part of the 3-phosphoglycerate phosphatase was found in the mesophyll cells and P-glycolate phosphatase in the bundle sheath cells. Phosphoglycolate phosphatase, but not 3-phosphoglycerate phosphatase, was located in chloroplasts of C(3)- and C(4)- plants. Formation of 3-phosphoglycerate phosphatase increased 4- to 12-fold during greening of etiolated sugarcane leaves. This cytosol phosphatase displayed a diurnal variation in sugarcane leaves by increasing 50% during late daylight hours and early evening. It is proposed that the soluble form of 3-phosphoglycerate phosphatase is necessary for carbon transport between the bundle sheath and mesophyll cells during photosynthesis by C(4)-plants. In C(3)- and C(4)-plants this phosphatase initiates the conversion of 3-phosphoglycerate to serine which is an alternate metabolic pathway to glycolate metabolism and photorespiration.
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pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-10970181,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-12981011,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-13741300,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-14454723,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-14489659,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-14907713,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-16654194,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-16655977,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-16657572,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-16657823,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-4292834,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-4294897,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-4309527,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-4386510,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-4388469,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-4394164,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-4395378,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-5480104,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-5775848,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-5810044,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-5922972,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-5928205,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16657822-6045296
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pubmed:language |
eng
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pubmed:journal |
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pubmed:status |
PubMed-not-MEDLINE
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pubmed:month |
Oct
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pubmed:issn |
0032-0889
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:volume |
48
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
480-7
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pubmed:dateRevised |
2010-9-15
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pubmed:year |
1971
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pubmed:articleTitle |
3-Phosphoglycerate Phosphatase in Plants: II. Distribution, Physiological Considerations, and Comparison with P-Glycolate Phosphatase.
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pubmed:affiliation |
Department of Biochemistry, Michigan State University, East Lansing, Michigan 48823.
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pubmed:publicationType |
Journal Article
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