Environmental and physiological controls on the carbon isotope composition of CO2 respired by leaves and roots of a C3 woody legume (Prosopis velutina) and a C4 perennial grass (Sporobolus wrightii)
作者： WEI SUN , VÍCTOR RESCO , DAVID G. WILLIAMS
DOI: 10.1111/J.1365-3040.2011.02436.X
关键词:
摘要: Accurate estimates of the δ(13) C value CO(2) respired from roots (δ(13) C(R_root) ) and leaves C(R_leaf) are important for tracing understanding changes in fluxes at ecosystem scale. Yet mechanisms underlying temporal variation these isotopic signals not fully resolved. We measured , values concentrations glucose sucrose C(4) grass Sporobolus wrightii C(3) tree Prosopis velutina a savanna southeastern Arizona, USA. Night-time up to 4.6 ± 0.6‰ S. wrightii 3.0 ± 0.6‰ P. velutina were correlated with shifts leaf concentration, but respiratory substrates. Strong positive correlations between root suggest large diel (were 3.9‰) influenced by short-term leaf-derived phloem C. No was observed S. wrightii. Our findings show that both related substrate isotope composition concentration. Changes limitation or demand biosynthesis may largely control species.
sci-hub.se 参考文章(49)
Christiane Werner, Do isotopic respiratory signals trace changes in metabolic fluxes New Phytologist. ,vol. 186, pp. 569- 571 ,(2010) , 10.1111/J.1469-8137.2010.03248.X
Arthur Gessler, Claudia Keitel, Naomi Kodama, Christopher Weston, Anthony J. Winters, Heather Keith, Kliti Grice, Ray Leuning, Graham D. Farquhar, δ13C of organic matter transported from the leaves to the roots in Eucalyptus delegatensis: short-term variations and relation to respired CO2 Functional Plant Biology. ,vol. 34, pp. 692- 706 ,(2007) , 10.1071/FP07064
Lucas A. Cernusak, Guillaume Tcherkez, Claudia Keitel, William K. Cornwell, Louis S. Santiago, Alexander Knohl, Margaret M. Barbour, David G. Williams, Peter B. Reich, David S. Ellsworth, Todd E. Dawson, Howard G. Griffiths, Graham D. Farquhar, Ian J. Wright, Why are non-photosynthetic tissues generally 13C enriched compared with leaves in C3 plants? Review and synthesis of current hypotheses. Functional Plant Biology. ,vol. 36, pp. 199- 213 ,(2009) , 10.1071/FP08216
Camille Bathellier, Guillaume Tcherkez, Richard Bligny, Elizabeth Gout, Gabriel Cornic, Jaleh Ghashghaie, Metabolic origin of the δ13C of respired CO2 in roots of Phaseolus vulgaris New Phytologist. ,vol. 181, pp. 387- 399 ,(2009) , 10.1111/J.1469-8137.2008.02679.X
Christiane Werner, Nils Hasenbein, Rodrigo Maia, Wolfram Beyschlag, Cristina Máguas, Evaluating high time-resolved changes in carbon isotope ratio of respired CO2 by a rapid in-tube incubation technique. Rapid Communications in Mass Spectrometry. ,vol. 21, pp. 1352- 1360 ,(2007) , 10.1002/RCM.2970
Stephan Unger, Cristina Máguas, João S. Pereira, Luis M. Aires, Teresa S. David, Christiane Werner, Disentangling drought-induced variation in ecosystem and soil respiration using stable carbon isotopes Oecologia. ,vol. 163, pp. 1043- 1057 ,(2010) , 10.1007/S00442-010-1576-6
Gerd Gleixner, Charles Scrimgeour, Hanns-Ludwig Schmidt, Roberto Viola, Stable isotope distribution in the major metabolites of source and sink organs of Solanum tuberosum L.: a powerful tool in the study of metabolic partitioning in intact plants Planta. ,vol. 207, pp. 241- 245 ,(1998) , 10.1007/S004250050479
ELKE BRANDES, NAOMI KODAMA, KATHERINE WHITTAKER, CHRISTOPHER WESTON, HEINZ RENNENBERG, CLAUDIA KEITEL, MARK A. ADAMS, ARTHUR GESSLER, Short-term variation in the isotopic composition of organic matter allocated from the leaves to the stem of Pinus sylvestris: effects of photosynthetic and postphotosynthetic carbon isotope fractionation Global Change Biology. ,vol. 12, pp. 1922- 1939 ,(2006) , 10.1111/J.1365-2486.2006.01205.X
Cheng-yuan Xu, Guang-hui Lin, Kevin L. Griffin, Raymond N. Sambrotto, Leaf respiratory CO2 is 13C-enriched relative to leaf organic components in five species of C3 plants New Phytologist. ,vol. 163, pp. 499- 505 ,(2004) , 10.1111/J.1469-8137.2004.01153.X
Frederik Wegener, Wolfram Beyschlag, Christiane Werner, The magnitude of diurnal variation in carbon isotopic composition of leaf dark respired CO2 correlates with the difference between δ13C of leaf and root material Functional Plant Biology. ,vol. 37, pp. 849- 858 ,(2010) , 10.1071/FP09224