Responses to chilling of two Eucalyptus globulus clones with contrasting drought resistance

Functional Plant Biology : FPB
F Costa E SilvaJoão S Pereira

Abstract

The effect of chilling on growth and plant hydraulic properties in a drought-resistant clone (CN5) and a drought-sensitive clone (ST51) of Eucalyptus globulus Labill. was evaluated. Chilling (10/5°C, day/night) led to a general decrease in growth of both clones and significant reductions in root hydraulic conductivity, rate of photosynthesis and stomatal conductance in comparison to plants grown at control temperature (24/16°C). The drought-resistant CN5 clone maintained higher root growth and lower leaf-to-root-area ratio than the drought-sensitive ST51 clone, in both temperature treatments. Conversely, ST51 exhibited greater carbon allocation to the foliage and higher hydraulic conductance than clone CN5 at both temperatures. Plants of both clones, when acclimated to chilling, maintained a higher hydraulic conductivity than control plants exposed to chilling temperatures without acclimation. Under chilling, the main differences between clones were a higher water status and anthocyanin concentration in CN5 plants, and a stronger inhibition of root growth in ST51 plants. Except for roots, the hypothesis of a lower depression of growth rate in the drought-resistant clone under chilling was not verified. However, higher root grow...Continue Reading

References

Nov 11, 1999·Plant Physiology·X Wan, J J Zwiazek
Feb 13, 2001·Trends in Plant Science·D J Allen, D R Ort
Sep 18, 2002·Annals of Botany·Hélène Javot, Christophe Maurel
Apr 25, 2003·Trends in Plant Science·Dong-Yul SungCharles L Guy
Apr 1, 1980·Plant Physiology·S W Running, C P Reid
Apr 1, 2005·Functional Plant Biology : FPB·Owen K AtkinMark G Tjoelker

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