Carbon Isotope Discrimination, Gas Exchange and Stem Growth of Four Euramerican Hybrid Poplars under Different Watering Regimes

Voltas, Jordi; Serrano, Luis; Hernández, Montserrat Peris; Pemán, Jesús

doi:10.1007/s11056-005-0879-7

Cited by 34 publications

(26 citation statements)

References 22 publications

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“…Such genetic variability had already been observed from younger plant material in previous studies in hybrid poplars growing in a glasshouse or in the field (Al Afas et al, 2007;Ceulemans and Deraedt, 1999;Marron et al, 2005;Monclus et al, 2005;Voltas et al, 2006).…”

Section: Genetic Variability Of Productivity Leaf Traits and Variablsupporting

confidence: 66%

“…No relationship has been observed between productivity and variables related to water-use efficiency (Δ), as previously described for Populus fremontii (Leffler and Evans, 1999), for TD hybrids (Rae et al, 2004) and for DN hybrids Monclus et al, 2005;Voltas et al, 2006). The lack of correlation between productivity and water-use efficiency observed earlier on young individuals was thus confirmed at larger ages and sizes, and under very different growth conditions.…”

Section: Relationships Between Productivity Leaf Traits and Variablesupporting

confidence: 57%

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Variation génétique de la productivité, de caractères foliaires et de la discrimination isotopique vis-à-vis du carbone chez des hybrides de peuplier cultivés sur des sites contrastés

et al. 2008

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-• We examined the relationships between productivity, leaf traits and carbon isotope discrimination in bulk leaf matter (Δ l ) and in phloem sap (Δ s ) from more than 5-year-old trees belonging to Populus deltoides × P. nigra and Populus trichocarpa × P. deltoides; trees were grown in alluvial and non alluvial sites in a commercial poplar plantation.• On both sites, a large genetic variability was evidenced for all variables. The genotypic ranking remained stable between years for all variables, while it differed between sites. Δ l scaled positively with Δ s and neither Δ l nor Δ s were correlated with productivity. A significant genotype by site interaction was evident for all variables. The non alluvial site resulted in lower productivity, and in thicker/denser leaves with lower nitrogen and carbon contents. Noteworthy, the genotypic ranking for Δ l measured at the alluvial site was similar to that previously established in a glasshouse.• As observed in previous studies from younger trees, there is a potential to select genotypes, combining high productivity and high water-use efficiency, for growth in moderately drought-prone areas.hybrid poplars plantation / soil characteristics / genetic variability / carbon isotope discrimination (Δ) / leaf traits Résumé -Variation génétique de la productivité, de caractères foliaires et de la discrimination isotopique vis-à-vis du carbone chez des hybrides de peuplier cultivés sur des sites contrastés.• La productivité, des caractères foliaires et la discrimination isotopique vis-à-vis du carbone de la matière organique des feuilles (Δ l ) et de la sève élaborée (Δ s ) ont été étudiés chez Populus deltoides × P. nigra et Populus trichocarpa × P. deltoides à partir d'arbres âgés de plus de cinq ans, cultivés en peupleraie sur des sites alluviaux et non alluviaux.• Des différences génotypiques ont été observées pour toutes les variables. Le classement des génotypes était conservé entre deux années, alors qu'il variait entre sites une année donnée. Δ l était corrélé positivement avec Δ s et aucun lien n'a été détecté entre Δ l ou Δ s et productivité. Une interaction significative entre génotype et site a été observée pour toutes les variables. Les arbres du site non alluvial se caractérisaient par une plus faible productivité et des feuilles plus épaisses/denses avec des teneurs en azote et en carbone plus faibles. De façon intéressante, le classement des génotypes pour Δ l était maintenu entre les expériences réalisées sur site alluvial et celles précédemment menées en serre.• Toutes expériences confondues, il semble possible de sélectionner des génotypes productifs et efficients afin d'étendre les plantations à des terrains enclins à des sécheresses modérées.peupleraie / caractéristiques du sol / variabilité génétique / discrimination isotopique vis-à-vis du carbone (Δ) / caractères foliaires

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Section: Genetic Variability Of Productivity Leaf Traits and Variablsupporting

confidence: 66%

Section: Relationships Between Productivity Leaf Traits and Variablesupporting

confidence: 57%

Variation génétique de la productivité, de caractères foliaires et de la discrimination isotopique vis-à-vis du carbone chez des hybrides de peuplier cultivés sur des sites contrastés

et al. 2008

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“…The d 13 C was assumed to be (8.0 (Voltas et al 2006). The activity of RuBisCo was determined by Sayre et al (1979).…”

Section: Methodsmentioning

confidence: 99%

Effect of water stress on dry mass accumulation and allocation in sweet potato based on stable isotope analysis

et al. 2015

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. 2015. Effect of water stress on dry mass accumulation and allocation in sweet potato based on stable isotope analysis. Can. J. Plant Sci. 95: 263Á271. Pot experiments were conducted to study the effect of water stress on the dry mass accumulation, allocation, ribulose-1, 5-bisphosphate carboxylase/oxygenase (Rubisco) activity and stable carbon isotope composition in sweet potato (Ipomoea batatas L.). Three water regimes (50, 75 and 100% field water capacity, respectively) were investigated. Water stress effects on dry mass accumulation, allocation, gas exchange, stable carbon isotope composition and Rubisco enzyme activity were detected in sweet potato at different stages (seedling, vegetative, early maturity, and late maturity). In addition, relationships between Rubisco activity and photosynthetic rate, dry stress allocation and D 13 C under different water regimes were explored. The allocation of dry mass and D 13 C in leaves, petioles, stems and roots exhibited highest level in soil with 100% moisture content at different growth stages. The photosynthetic rate, transpiration, stomatal conductance, and RuBisCo activity of sweet potato at different growth stages also increased with increasing soil water content. The regression equations between the activity of RuBisCo and photosynthetic rate in 50, 75 and 100% field capacity were y00.675x (1.846, y 00.798x(1.370, and y 00.516x'3.887. A positive correlation between dry mass allocation and D 13 C was observed. Water stress could affect dry mass accumulation, allocation, gas exchange, RuBisCo activity, and D 13 C content in sweet potato organs during plant development stages. Incidence du stress hydrique sur l'accumulation et la re´partition de la matie`re se`che chez la patate douce d'apre`s l'analyse des isotopes stables. Can. J. Plant Sci. 95: 263Á271. Les auteurs ont effectue´des expe´riences en pot pour ve´rifier les conse´quences du stress hydrique sur l'accumulation de matie`re se`che, sa re´partition, l'activite´de la ribulose-1, 5-bisphosphate carboxylase/oxyge´nase (Rubisco) et la composition des isotopes stables du carbone chez la patate douce (Ipomoea batatas L.). Ils se sont penche´s sur trois re´gimes hydriques (50 %, 75 % et 100 % de la capacite´au champ). Les conse´quences du stress hydrique sur l'accumulation de matie`re se`che, sa re´partition, les e´changes gazeux, la composition des isotopes stables du carbone et l'activite´de l'enzyme Rubisco ont e´te´de´cele´es chez la patate douce a`diffe´rents stades (plantule, croissance ve´ge´tative, de´but de la maturite´, fin de la maturite´). Les auteurs ont e´galement examine´les liens entre l'activite´de l'enzyme Rubisco et le taux de photosynthe`se, la re´partition du stress de la se´cheresse et les isotopes D 13 C sous divers re´gimes hydriques. La re´partition de la matie`re se`che et des isotopes D 13 C dans les feuilles, les pe´tioles et les racines atteint son plus haut niveau quand la teneur en eau atteint 100 % a`diffe´rents stades de croissance. Le taux de photosynthe`se, la transpiration...

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“…(Pita et al 2001), and in Populus x euramericana Dode clones (Voltas et al 2006). The negative genetic correlation observed in the current study between stable carbon isotope discrimination and third-year height might suggest that genetic variation in stable carbon isotope discrimination in P. taeda may be largely the result of differences in photosynthetic capacity, as opposed to differences in stomatal conductance among genotypes that typically lead to positive correlations between discrimination and growth.…”

Section: Genetic Correlations Between δ and Third-year Heightmentioning

confidence: 99%

Inheritance of foliar stable carbon isotope discrimination and third-year height in Pinus taeda clones on contrasting sites in Florida and Georgia

Baltunis

Martin

Huber

et al. 2008

Tree Genetics & Genomes

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Quantifying foliar stable carbon isotope discrimination (Δ) is a powerful approach for understanding genetic variation in gas exchange traits in large populations. The genetic architecture of Δ and third-year height is described for more than 1,000 clones of Pinus taeda tested on two contrasting sites. b h 2 for Δ was 0.14 (±0.03), 0.20 (±0.07), and 0.09 (±0.04) at Florida, Georgia, and across sites, respectively. b H 2 for stable carbon isotope discrimination ranged from 0.25 (±0.03) at the Florida site to 0.33 (±0.03) at the Georgia site, while the across-site estimate of b H 2 was 0.19 (±0.02). For third-year height, b h 2 ranged from 0.13 (±0.05) at the Georgia site to 0.20 (±0.06) at the Florida site with an across-site estimate of 0.09 (±0.05). Broad-sense heritability estimates for third-year height were 0.23 (±0.03), 0.28 (±0.03), and 0.13 (±0.02) at the Florida site, Georgia site, and across sites, respectively. Type B total genetic correlation for Δ was 0.70±0.06, indicating that clonal rankings were relatively stable across sites, while for third-year height, rankings of clones were more unstable across the two trials b r B TG ¼ 0:55 AE 0:08 ð Þ . Thirdyear height and Δ were negatively correlated at the parental b r ADD ¼ À0:42 AE 0:33 ð Þ , full-sib family b r FS ¼ À0:54AE ð 0:25Þ, and clonal b r TG ¼ À0:30 AE 0:11 ð Þ levels, suggesting that genetic variation for Δ in P. taeda may be a result of differences in photosynthetic capacity. We conclude that Δ may be a useful selection trait to improve water-use efficiency and for guiding deployment decisions in P. taeda.

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Carbon Isotope Discrimination, Gas Exchange and Stem Growth of Four Euramerican Hybrid Poplars under Different Watering Regimes

Cited by 34 publications

References 22 publications

Variation génétique de la productivité, de caractères foliaires et de la discrimination isotopique vis-à-vis du carbone chez des hybrides de peuplier cultivés sur des sites contrastés

Variation génétique de la productivité, de caractères foliaires et de la discrimination isotopique vis-à-vis du carbone chez des hybrides de peuplier cultivés sur des sites contrastés

Effect of water stress on dry mass accumulation and allocation in sweet potato based on stable isotope analysis

Inheritance of foliar stable carbon isotope discrimination and third-year height in Pinus taeda clones on contrasting sites in Florida and Georgia

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