, Volume 108, Issue 4, pp 683–693 | Cite as

Evolutionary consequences of simulated global change: genetic adaptation or adaptive phenotypic plasticity

  • Catherine Potvin
  • Denise Tousignant
Population Ecology


During the next century, natural and agricultural systems might need to adjust to a rapid increase in atmospheric CO2 concentration and global temperature. Evolution of genotypes adapted to this global change could play a central role in plants' response. The main purpose of this study was to determine the relative importance of phenotypic and genotypic responses of plants to global change. To do so, we selected two populations of the short-lived Brassica juncea, one under ambient conditions and another one under conditions simulating global change. After seven generations of selection, differences between the two populations were examined using a reciprocal transplant garden. We monitored 14 different traits and found evidence for genetic adaptation only once, for vegetative biomass early in the growth cycle. Of the 14 traits, 11 responded plastically to the environment, but only one of these plastic changes had a possible adaptive value. Overall, the long-term evolutionary consequences of global change will depend on the response of fitness-related traits. None of the five reproductive traits measured showed any evolutionary responses. The main conclusion of our study is that Brassica juncea was apparently unable to respond evolutionarily to simulated global change either by genetic adaptation or by adaptive phenotypic plasticity. The limit to selection was apparently due to inbreeding depression induced by the harsh conditions of the “predicted” environment.

Key words

Artificial selection Brassica juncea Global change Inbreeding depression Evolutionary changes 


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  1. Ågren J, Schemske DW (1993) The cost of defense against herbivores: an experimental study of trichome production in Brassica rapa. Am Nat 141:338–350Google Scholar
  2. Anonymous (1985) Crucifer genetics cooperative resource book. Department of Plant Pathology, University of Wisconsin, MadisonGoogle Scholar
  3. Baker JT, Allen LH Jr (1993) Contrasting crop species responses to CO2 and temperature: rice, soybean and citrus. Vegetatio 104/105:239–260Google Scholar
  4. Bazzaz FA (1990) The response of natural ecosystems to the rising global CO2 levels. Annu Rev Ecol Syst 21:167–196Google Scholar
  5. Bradshaw AD, McNeilly T (1991) Evolutionary response to global climatic change. Ann Bot 67 suppl 1:5–14Google Scholar
  6. Chapin FS III, Autumn K, Pugnaire F (1993) Evolution of suites of traits in response to environmental stresses. Am Nat 142: S78-S92Google Scholar
  7. Charlesworth D, Charlesworth B (1987) Inbreeding depression and its evolutionary consequences. Annu Rev Ecol Syst 18:237–268Google Scholar
  8. Coleman JS, Rochefort L, Bazzaz FA, Woodward FI (1991) Atmospheric CO2, plant nitrogen status and the susceptibility of plants to an acute increase in temperature. Plant Cell Environ 14:667–674Google Scholar
  9. Cubash U, Cess RD (1990) Processes and modelling. In: Houghton JT, Jenkins GJ, Ephrauns JJ (eds) Intergovernmental panel on climate change:the IPCC scientific assessment. Cambridge University Press, CambridgeGoogle Scholar
  10. Dudash MR (1990) Relative fitness of selfed and outcrossed progeny in a self-compatible, protandrous species, Sabatia angularis L. (Gentianaceae): a comparison in three environments. Evolution 44:1129–1139Google Scholar
  11. Ellstrand NC, Elam DR (1993) Population genetic consequences of small population size: Implications for plant conservation. Annu Rev Ecol Syst 24:217–242Google Scholar
  12. Falconer DS (1989) Introduction to quantitative genetics. Wiley, New YorkGoogle Scholar
  13. Firor J (1990) The changing atmosphere: a global challenge. Yale University Press, New HavenGoogle Scholar
  14. Gates WL (1990) Validation of climate models. In: Houghton JT, Jenkins GJ, Ephrauns JJ (eds) Intergovernmental panel on climate change: The IPCC scientific assessment. Cambridge University Press, CambridgeGoogle Scholar
  15. Geber MA, Dawson TE (1993) Evolutionary responses of plants to global change. In: Kareiva PM, Kingsolver JG, Huey RB (eds) Biotic interactions and global change. Sinauer, Sunderland, pp 179–197Google Scholar
  16. Hoffmann AA, Blows MW (1993) Evolutionary genetics and climate change: will animals adapt to global warming. In: Kareiva PM, Kingsolver JG, Huey RB (eds) Biotic interactions and global change. Sinauer, Sunderland, pp 165–178Google Scholar
  17. Holt RD (1990) Microevolutionary consequences of climate change. Trends Ecol Evol 5:311–315Google Scholar
  18. Howarth CJ (1991) Molecular responses of plants to an increased incidence of heat shock. Plant Cell Environ 14:831–841Google Scholar
  19. Huey RB, Kingsolver JG (1993) Evolution of resistance to high temperature in ectotherms. Am Nat 142:S21-S46Google Scholar
  20. Huntley B (1991) How plants respond to climatic change: migration rates, individualism and the consequences for plant communities. Ann Bot 67 suppl 1:15–22Google Scholar
  21. Jain SK, Bradshaw AD (1966) Evolutionary divergence among adjacent plant populations. Heredity 21:407–441Google Scholar
  22. Kingsolver JG (1996) Physiological sensitivity and evolutionary responses to climate change. In: Körner Ch, Bazzaz FA (eds) Carbon dioxide, populations and communities. Academic Press, San DiegoGoogle Scholar
  23. Kirkpatrick M, Lande R (1989) The evolution of maternal characters. Evolution 43:485–503Google Scholar
  24. Körner Ch (1993) CO2 fertilization: the great uncertainty in future vegetation development. In: Solomon AM, Shugart HH (eds) Vegetation dynamics and global change. Chapman and Hall, New York, pp 53–70Google Scholar
  25. Lenski RE, Bennett AF (1993) Evolutionary response of Escherichia coli to thermal stress. Am Nat 142:S47-S64Google Scholar
  26. Lynch M, Lande R (1993) Evolution and extinction in response to environmental change. In: Kareiva PM, Kingsolver JG, Huey RB (eds) Biotic interactions and global change. Sinauer, Sunderland, pp 234–250Google Scholar
  27. Maxon Smith JW (1977) Selection for response to CO2-enrichment is glasshouse lettuce. Hort Res 17:15–22Google Scholar
  28. Mearns LO, Katz RW, Schneider SH (1984) Extreme high-temperature events: changes in their probabilities with changes in mean temperature. J Clim Appl Meteorol 23:1601–1613Google Scholar
  29. Mitchell-Olds T, Waller DM (1985) Relative performance of selfed and outerossed progeny in Impatiens capensis. Evolution 39:533–543Google Scholar
  30. Nasrallah JB, Nishio T, Nasrallah ME (1991) The self-incompatibility genes of Brassica: expression and use in genetic ablation of floral tissues. Ann Rev Plant Physiol Plant Mol Biol 42:393–422Google Scholar
  31. Parsons PA (1993) The importance and consequences of stress in living and fossil populations: from life-history variation to evolutionary changes. Am Nat 142:S5-S20Google Scholar
  32. Poorter H (1993) Interspecific variation in the growth response of plants to an elevated ambient CO2 concentration. Vegetatio 104/105:77–97Google Scholar
  33. Roach DA, Wulff RD (1987) Maternal effects in plants. Annu Rev Ecol Syst 18:209–235Google Scholar
  34. Sabourin A, Bertrand M, Auger P, Bonkowski M, Paquette D (1991) Guide des crucifères sauvages de l'Est du Canada (Québec, Ontario et Mautino). Les amis du Jardèn botanique. Montréal, Québec, 249 ppGoogle Scholar
  35. Scheiner SM, Goodnight CJ (1984) The comparison of phenotypic plasticity and genetic variation in populations of the grass Danthonia spicata. Evolution 38:845–855Google Scholar
  36. Schmitt J, Ehrhardt DW (1990) Enhancement of inbreeding depression by dominance and suppression in Impatiens capensis. Evolution 44:269–278Google Scholar
  37. Sultan SE (1987) Evolutionary implications of phenotypic plasticity in plants. Evol Biol 21:127–178Google Scholar
  38. Thomas P (1984) Canola growers' manual. Canola Council of Canada, SaskatoonGoogle Scholar
  39. Tousignant D, Potvin C (1996) Selective responses to global change: experimental results on Brassica juncea (L.) Czern. In: Körner Ch, Bazzaz FA (eds) Carbon dioxide, populations and communities. Academic Press, San Diego, pp 23–30Google Scholar
  40. Williams PH, Hill CB (1986) Rapid-cycling populations of Brassica. Science 232:1385–1389Google Scholar
  41. Winer BJ (1971) Statistical principles in experimental design. McGraw-Hill, New YorkGoogle Scholar

Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • Catherine Potvin
    • 1
  • Denise Tousignant
    • 1
  1. 1.Department of BiologyMcGill UniversityMontréalCanada

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