2014
DOI: 10.1093/treephys/tpu057
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Seasonal variations in photosynthesis, intrinsic water-use efficiency and stable isotope composition of poplar leaves in a short-rotation plantation

Abstract: Photosynthetic carbon assimilation and transpirational water loss play an important role in the yield and the carbon sequestration potential of bioenergy-devoted cultures of fast-growing trees. For six poplar (Populus) genotypes in a short-rotation plantation, we observed significant seasonal and genotypic variation in photosynthetic parameters, intrinsic water-use efficiency (WUEi) and leaf stable isotope composition (δ13C and δ18O). The poplars maintained high photosynthetic rates (between 17.8 and 26.9 μmol… Show more

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Cited by 80 publications
(61 citation statements)
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“…In general, nutrient use efficiency in plants decrease with increasing soil fertility (Vitousek et al 1995, Broeckx et al 2014. Our results of the second year agree with this finding, when a higher WNUE was observed for poplar clones grown on shallow soil, but not with the results of the third year of this study.…”
Section: Decreases In Wood Nitrogen Use Efficiency As An Adaptation Tsupporting
confidence: 70%
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“…In general, nutrient use efficiency in plants decrease with increasing soil fertility (Vitousek et al 1995, Broeckx et al 2014. Our results of the second year agree with this finding, when a higher WNUE was observed for poplar clones grown on shallow soil, but not with the results of the third year of this study.…”
Section: Decreases In Wood Nitrogen Use Efficiency As An Adaptation Tsupporting
confidence: 70%
“…A trade-off between NUE and water use efficiency (WUE) within species has been demonstrated in many studies (Field et al 1983, Lajtha & Whitford 1989, Patterson et al 1997, Sadras & Rodriguez 2010, Broeckx et al 2014). For example, Broeckx et al (2014) showed that a trade-off between intrinsic water use efficiency and photosynthetic N use efficiency existed among six poplar genotypes, but only when soil water availability was restricted.…”
Section: Decreases In Wood Nitrogen Use Efficiency As An Adaptation Tmentioning
confidence: 99%
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“…Superior growth of poplar SRC is, however, not always associated with different allocation patterns, as shown for different hybrids and P. deltoides clones (Dowell et al 2009). Genotypic variation in photosynthesis is related to leaf structural (e.g., leaf mass per area, LMA) and biochemical (e.g., leaf N concentration) parameters (Casella & Ceulemans 2002, Xu & Baldocchi 2003, Broeckx et al 2014b). Significant genotypic differences have already been documented for LMA, leaf N concentration, maximum carboxylation rate (Vc max) and other photosynthetic parameters (Casella & Ceulemans 2002, Verlinden et al 2013, Broeckx et al 2012, 2014b.…”
Section: Genotypic Variationmentioning
confidence: 99%
“…The change in physiological condition can be a result of nutritional imbalance in other necessary for photosynthesis and growth nutrients and provoked osmotic stress in soil caused by the high level of nutrients itself (Elliott and White 1994). The former affects the photosynthetic nutrient use efficiency (Thomas et al 1994), whilst the latter provides to limitation of stomata opening, and thus, photosynthesis of trees decreases (Broeckx et al 2014). The stomatal closure limits the CO 2 uptake.…”
Section: Fertilization Alters Tree Physiological Conditionmentioning
confidence: 99%