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DOI | 10.1111/nph.15566 |
Responses of respiration in the light to warming in field-grown trees: a comparison of the thermal sensitivity of the Kok and Laisk methods | |
Way, Danielle A.1,2; Aspinwall, Michael J.3,4; Drake, John E.3,5; Crous, Kristine Y.3; Campany, Courtney E.3,6; Ghannoum, Oula3; Tissue, David T.3; Tjoelker, Mark G.3 | |
发表日期 | 2019 |
ISSN | 0028-646X |
EISSN | 1469-8137 |
卷号 | 222期号:1页码:132-143 |
英文摘要 | The Kok and Laisk techniques can both be used to estimate light respiration R-light. We investigated whether responses of R-light to short- and long-term changes in leaf temperature depend on the technique used to estimate R-light. We grew Eucalyptus tereticornis in whole-tree chambers under ambient temperature (AT) or AT + 3 degrees C (elevated temperature, ET). We assessed dark respiration R-dark and light respiration with the Kok (R-Kok) and Laisk (R-Laisk) methods at four temperatures to determine the degree of light suppression of respiration using both methods in AT and ET trees. The ET treatment had little impact on R-dark, R-Kok or R-Laisk. Although the thermal sensitivities of R-Kok or R-Laisk were similar, R-Kok was higher than R-Laisk. We found negative values of R-Laisk at the lowest measurement temperatures, indicating positive net CO2 uptake, which we propose may be related to phosphoenolpyruvate carboxylase activity. Light suppression of R-dark decreased with increasing leaf temperature, but the degree of suppression depended on the method used. The Kok and Laisk methods do not generate the same estimates of R-light or light suppression of R-dark between 20 and 35 degrees C. Negative rates of R-Laisk imply that this method may become less reliable at low temperatures. |
WOS研究方向 | Plant Sciences |
来源期刊 | NEW PHYTOLOGIST |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/95527 |
作者单位 | 1.Univ Western Ontario, Dept Biol, 1151 Richmond St, London, ON N6A 5B7, Canada; 2.Duke Univ, Nicholas Sch Environm, 9 Circuit Dr,Box 90328, Durham, NC 27708 USA; 3.Western Sydney Univ, Hawkesbury Inst Environm, Locked Bag 1797, Penrith, NSW 2751, Australia; 4.Univ North Florida, Dept Biol, 1 UNF Dr, Jacksonville, FL 32224 USA; 5.SUNY ESF, Forest & Nat Resources Management, 1 Forestry Dr, Syracuse, NY 13210 USA; 6.Colgate Univ, Dept Biol, 13 Oak Dr, Hamilton, NY 13346 USA |
推荐引用方式 GB/T 7714 | Way, Danielle A.,Aspinwall, Michael J.,Drake, John E.,et al. Responses of respiration in the light to warming in field-grown trees: a comparison of the thermal sensitivity of the Kok and Laisk methods[J],2019,222(1):132-143. |
APA | Way, Danielle A..,Aspinwall, Michael J..,Drake, John E..,Crous, Kristine Y..,Campany, Courtney E..,...&Tjoelker, Mark G..(2019).Responses of respiration in the light to warming in field-grown trees: a comparison of the thermal sensitivity of the Kok and Laisk methods.NEW PHYTOLOGIST,222(1),132-143. |
MLA | Way, Danielle A.,et al."Responses of respiration in the light to warming in field-grown trees: a comparison of the thermal sensitivity of the Kok and Laisk methods".NEW PHYTOLOGIST 222.1(2019):132-143. |
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