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| Web URL(s): | http://www.jstor.org/stable/2433151?seq=1#page_scan_tab_contents
Last checked: 12/17/2015
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Borland, Anne M.;
Farrar, J. F. |
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| Author Affiliation: | School of Plant Biology, University College of North Wales, Bangor, Gwynedd LL57 2UW, UK |
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| Title: | The influence of low temperature on diel patterns of carbohydrate metabolism in leaves of Poa annua L. and Poa x Jemtlandica (Almq.) Richt. |
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| Source: | New Phytologist. Vol. 105, No. 2, February 1987, p. 255-263. |
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| Publishing Information: | Oxford, England |
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| Keywords: | TIC Keywords: Temperatures; Carbohydrates; Leaves; Diel; Poa annua; Poa jemtlandica
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| Abstract/Contents: | "The effect of low temperature on diel changes in net gas exchange, carbohydrate content and export, and on the extractable activities of sucros phosphate synthase and acid invertase from leaves of Poa annua (a ruderal grass) and Poa x jemtlandica (a subarctic grass) was investigated. Exposure for 5 d to a temperature of 7 C significantly reduced the rate of net photosynthesis of P. annua but had no effect on that of P. x jemtlandica. In both species, soluble sugars constituted 20% of the dry weight and showed net accumulation over 24 h. There was approximately twice the concentration of fructans in the leaves of P. x jemtlandica compared with P. annua. During the 16 h photoperiod, the leaves of P. x jemtlandica stored twice as much photosynthate as the leaves of P. annua. However, the higher rate of export from the leaves of P. x jemtlandica in the dark compared to P. annua resulted in the allocation of similar proportions of photosynthate to the processes of storage, respiration and export in leaf blades of both species over a 24 h period. Low temperature resulted in a decrease in the extractable activity of sucrose phosphate synthase from P. annua but not from P. x jemtlandica. The activity of acid invertase was reduced by exposure in both species." |
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| Language: | English |
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| References: | 27 |
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| Note: | Tables
Figures |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Borland, A. M., and J. F. Farrar. 1987. The influence of low temperature on diel patterns of carbohydrate metabolism in leaves of Poa annua L. and Poa x Jemtlandica (Almq.) Richt.. New Phytol. 105(2):p. 255-263. |
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| Web URL(s):
http://www.jstor.org/stable/2433151?seq=1#page_scan_tab_contents
Last checked: 12/17/2015
Access conditions: Item is within a limited-access website |
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MSU catalog number: QK 1 .N38 |
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