Determinación semicuantitativa del punto de compensación para el CO2 en plantas C3 y C4 como práctica experimental en la docencia de Ecofisiología Vegetal

  1. Asma Boujenna
  2. Vanessa Martos Núñez
  3. Belén García del Moral Garrido
  4. Luis F. García del Moral
Journal:
ReiDoCrea: Revista electrónica de investigación y docencia creativa

ISSN: 2254-5883

Year of publication: 2022

Volume: 11

Pages: 239-244

Type: Article

DOI: 10.30827/DIGIBUG.74316 DIALNET GOOGLE SCHOLAR lock_openOpen access editor

More publications in: ReiDoCrea: Revista electrónica de investigación y docencia creativa

Abstract

The compensation point for CO2 (ΓCO2) is the minimum limit of atmospheric CO2 necessary for positive photosynthetic assimilation. Below this limit, respiratory processes predominate over photosynthetic ones, net photosynthesis has negative values and growth stops, with negative consequences on yield and productivity. Differences in ΓCO2 have been used to select genotypes with a higher CO2 uptake capacity and better productivity. The objective of this work is to contribute to the practical knowledge, by students of a Plant Ecophysiology course, of how the value of ΓCO2 can be calculated and its interest in evaluating the efficiency of CO2 uptake by plants with C3 or C4 photosynthetic metabolism.

Bibliographic References

  • Coombs J (1985). Carbon Metabolism. In: Coombs J, Hall DO, Long SP Scurlock JMO (eds.), Techniques in Bioproductivity and Photosynthesis, 2nd ed. (pp 139-157). Pergamon Press, Oxford.
  • Bauer H, Martha P (1981). The CO2 compensation point of C-3 plants - A reexamination. 1. Interspecific variability. Z Pflanzenphysiol, 103, 445-450. https://doi.org/10.1016/S0044-328X(81)80167-5
  • Bauer H, Martha P, Kirchner-Heiss B, & Mairhofer, I (1983). The CO2 compensation point of C-3 plants - A reexamination 2. Intraspecific Variability. Z Pflanzenphysiol, 109, 143-154. https://doi.org/10.1016/S0044-328X(83)80203-7
  • Dippery JK, Tissue DT, Thomas RB, & Strain BR (1995). Effects of low and elevated CO2 on C3 and C4 annuals 1. Growth and biomass allocation. Oecologia, 101, 13-20. https://doi.org/10.1007/BF00328895
  • Garcia del Moral, LF, & Boujenna, A (2020). Biotechnological approaches to improve carbon fixation in agricultural crops. Mod Concept Devep Agrono, 7(3), 721-724. https://doi.org/10.31031/MCDA.2020.07.000661
  • Goldsworthy A, & Day PR (1970). A Simple Technique for the Rapid Determination of Plant CO2 Compensation Points. Plant Physiol, 46, 850-851. https://doi.org/10.1104/pp.46.6.850
  • Krenzer EG, Moss DN, & Crookston RK (1975). Carbon dioxide compensation points of flowering plants. Plant Physiol, 56, 194-206. https://doi.org/10.1104/pp.56.2.194
  • Lambers H, Stuart Chapin F, & Pons Th L (2008). Plant physiological ecology. 2nd edition (pp 5409). Springer, New York.
  • Medrano H, Keys AJ, Lawlor DW, Parry MAJ, Azcon-Bieto J, Delgado E (1995). Improving plant production by selection for survival at low CO2 concentrations. J Exp Bot, 46, 1389–1396. https://doi.org/10.1093/jxb/46.special_issue.1389.
  • Pearcy RW, Ehleringer JR, Mooney H, & Rundel PW (2007). Plant Physiological Ecology: Field methods and instrumentation (pp 472). Springer, New York, Berlin.
  • Smith EW, Tolbert NE, & Ku HS (1976). Variables affecting CO2 compensation point. Plant Physiol ,58, 143-146. https://doi.org/10.1104/pp.58.2.143
  • Tissue DT, Griffin KL, Thomas RB, & Strain BR (1995). Effects of low and elevated CO2 on C3 and C4 annuals. 2. Photosynthesis and leaf biochemistry. Oecologia, 101, 21–28. https://doi.org/10.1007/BF00328894
Data source: Dialnet