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Escribano-Rocafort AG, Ventre-Lespiaucq AB, Granado-Yela C, Rubio de Casas R, Delgado JA, Balaguer L. The expression of light-related leaf functional traits depends on the location of individual leaves within the crown of isolated Olea europaea trees. ANNALS OF BOTANY 2016; 117:643-51. [PMID: 26944783 PMCID: PMC4817431 DOI: 10.1093/aob/mcw004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 11/07/2015] [Accepted: 11/27/2015] [Indexed: 05/31/2023]
Abstract
BACKGROUND The spatial arrangement and expression of foliar syndromes within tree crowns can reflect the coupling between crown form and function in a given environment. Isolated trees subjected to high irradiance and concomitant stress may adjust leaf phenotypes to cope with environmental gradients that are heterogeneous in space and time within the tree crown. The distinct expression of leaf phenotypes among crown positions could lead to complementary patterns in light interception at the crown scale. METHODS We quantified eight light-related leaf traits across 12 crown positions of ten isolated Olea europaea trees in the field. Specifically, we investigated whether the phenotypic expression of foliar traits differed among crown sectors and layers and five periods of the day from sunrise to sunset. We investigated the consequences in terms of the exposed area of the leaves at the tree scale during a single day. KEY RESULTS All traits differed among crown positions except the length-to-width ratio of the leaves. We found a strong complementarity in the patterns of the potential exposed area of the leaves among day periods as a result of a non-random distribution of leaf angles across the crown. Leaf exposure at the outer layer was below 60 % of the displayed surface, reaching maximum interception during morning periods. Daily interception increased towards the inner layer, achieving consecutive maximization from east to west positions within the crown, matching the sun's trajectory. CONCLUSIONS The expression of leaf traits within isolated trees of O. europaea varies continuously through the crown in a gradient of leaf morphotypes and leaf angles depending on the exposure and location of individual leaves. The distribution of light-related traits within the crown and the complementarity in the potential exposure patterns of the leaves during the day challenges the assumption of low trait variability within individuals.
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Affiliation(s)
- Adrián G Escribano-Rocafort
- Department of Ecology, Faculty of Biology, Complutense University of Madrid, Jose Antonio Novais St., 28040 Madrid, Spain,
| | - Agustina B Ventre-Lespiaucq
- Department of Ecology, Faculty of Biology, Complutense University of Madrid, Jose Antonio Novais St., 28040 Madrid, Spain
| | - Carlos Granado-Yela
- Department of Plant Biology I, Faculty of Biology, Complutense University of Madrid, Jose Antonio Novais St., 28040 Madrid, Spain
| | - Rafael Rubio de Casas
- Department of Ecology, Facultad de Ciencias, Universidad de Granada, Avda. de la Fuentenueva s/n, 18071 Granada, Spain, Estación Experimental de Zonas Áridas, EEZA-CSIC, Carretera de Sacramento s/n, Almería, Spain and UMR 5175 CEFE - Centre d'Ecologie Fonctionnelle et Evolutive (CNRS), 1919 Route de Mende, F-34293 Montpellier cedex 05, France
| | - Juan A Delgado
- Department of Ecology, Faculty of Biology, Complutense University of Madrid, Jose Antonio Novais St., 28040 Madrid, Spain
| | - Luis Balaguer
- Department of Plant Biology I, Faculty of Biology, Complutense University of Madrid, Jose Antonio Novais St., 28040 Madrid, Spain
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Ben Sadok I, Martinez S, Moutier N, Garcia G, Leon L, Belaj A, De La Rosa R, Khadari B, Costes E. Plasticity in Vegetative Growth over Contrasted Growing Sites of an F1 Olive Tree Progeny during Its Juvenile Phase. PLoS One 2015; 10:e0127539. [PMID: 26062090 PMCID: PMC4465673 DOI: 10.1371/journal.pone.0127539] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 04/15/2015] [Indexed: 11/24/2022] Open
Abstract
Climatic changes impact fruit tree growth and severely limit their production. Investigating the tree ability to cope with environmental variations is thus necessary to adapt breeding and management strategies in order to ensure sustainable production. In this study, we assessed the genetic parameters and genotype by environment interaction (GxE) during the early tree growth. One hundred and twenty olive seedlings derived from the cross ‘Olivière’ x ‘Arbequina’ were examined across two sites with contrasted environments, accounting for ontogenetic trends over three years. Models including the year of growth, branching order, environment, genotype effects, and their interactions were built with variance function and covariance structure of residuals when necessary. After selection of a model, broad sense heritabilities were estimated. Despite strong environmental effect on most traits, no GxE was found. Moreover, the internal structure of traits co-variation was similar in both sites. Ontogenetic growth variation, related to (i) the overall tree form and (ii) the growth and branching habit at growth unit scale, was not altered by the environment. Finally, a moderate to strong genetic control was identified for traits at the whole tree scale and at internode scale. Among all studied traits, the maximal internode length exhibited the highest heritability (H2 = 0.74). Considering the determinant role of this trait in tree architecture and its stability across environments, this study consolidates its relevance for breeding.
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Affiliation(s)
- Inès Ben Sadok
- Institut National de la Recherche Agronomique, UMR Amélioration Génétique et Adaptation des Plantes méditerranéennes et tropicales, Campus Cirad, Montpellier, France
- Montpellier SupAgro, UMR Amélioration Génétique et Adaptation des Plantes méditerranéennes et tropicales, Campus Cirad, Montpellier, France
- Institut de l'olivier de Sfax, Sfax, Tunisie
- Université des sciences de Sfax, Sfax, Tunisie
| | - Sebastien Martinez
- Institut National de la Recherche Agronomique, UMR Amélioration Génétique et Adaptation des Plantes méditerranéennes et tropicales, Campus Cirad, Montpellier, France
| | - Nathalie Moutier
- Institut National de la Recherche Agronomique, UMR Amélioration Génétique et Adaptation des Plantes méditerranéennes et tropicales, Campus Cirad, Montpellier, France
| | - Gilbert Garcia
- Institut National de la Recherche Agronomique, UMR Amélioration Génétique et Adaptation des Plantes méditerranéennes et tropicales, Campus Cirad, Montpellier, France
| | - Lorenzo Leon
- Instituto de Investigación y Formación Agraria y Pesquera, Centro Alameda del Obispo, Córdoba, Spain
| | - Angelina Belaj
- Instituto de Investigación y Formación Agraria y Pesquera, Centro Alameda del Obispo, Córdoba, Spain
| | - Raúl De La Rosa
- Instituto de Investigación y Formación Agraria y Pesquera, Centro Alameda del Obispo, Córdoba, Spain
| | - Bouchaib Khadari
- Institut National de la Recherche Agronomique, UMR Amélioration Génétique et Adaptation des Plantes méditerranéennes et tropicales, Campus Cirad, Montpellier, France
| | - Evelyne Costes
- Institut National de la Recherche Agronomique, UMR Amélioration Génétique et Adaptation des Plantes méditerranéennes et tropicales, Campus Cirad, Montpellier, France
- * E-mail:
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Bartholomé J, Salmon F, Vigneron P, Bouvet JM, Plomion C, Gion JM. Plasticity of primary and secondary growth dynamics in Eucalyptus hybrids: a quantitative genetics and QTL mapping perspective. BMC PLANT BIOLOGY 2013; 13:120. [PMID: 23978279 PMCID: PMC3870978 DOI: 10.1186/1471-2229-13-120] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 08/14/2013] [Indexed: 05/05/2023]
Abstract
BACKGROUND The genetic basis of growth traits has been widely studied in forest trees. Quantitative trait locus (QTL) studies have highlighted the presence of both stable and unstable genomic regions accounting for biomass production with respect to tree age and genetic background, but results remain scarce regarding the interplay between QTLs and the environment. In this study, our main objective was to dissect the genetic architecture of the growth trajectory with emphasis on genotype x environment interaction by measuring primary and secondary growth covering intervals connected with environmental variations. RESULTS Three different trials with the same family of Eucalyptus urophylla x E. grandis hybrids (with different genotypes) were planted in the Republic of Congo, corresponding to two QTL mapping experiments and one clonal test. Height and radial growths were monitored at regular intervals from the seedling stage to five years old. The correlation between growth increments and an aridity index revealed that growth before two years old (r = 0.5; 0.69) was more responsive to changes in water availability than late growth (r = 0.39; 0.42) for both height and circumference. We found a regular increase in heritability with time for cumulative growth for both height [0.06 - 0.33] and circumference [0.06 - 0.38]. Heritabilities for incremental growth were more heterogeneous over time even if ranges of variation were similar (height [0-0.31]; circumference [0.19 to 0.48]). Within the trials, QTL analysis revealed collocations between primary and secondary growth QTLs as well as between early growth increments and final growth QTLs. Between trials, few common QTLs were detected highlighting a strong environmental effect on the genetic architecture of growth, validated by significant QTL x E interactions. CONCLUSION These results suggest that early growth responses to water availability determine the genetic architecture of total growth at the mature stage and highlight the importance of considering growth as a composite trait (such as yields for annual plants) for a better understanding of its genetic bases.
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Affiliation(s)
- Jérôme Bartholomé
- CIRAD, UMR AGAP, F-33612 Cestas, France
- INRA, UMR BIOGECO, F-33612 Cestas, France
| | | | - Philippe Vigneron
- CIRAD, UMR AGAP, Pointe Noire, Congo
- CRDPI, BP 1291 Pointe Noire, Rep. of Congo
| | | | | | - Jean-Marc Gion
- CIRAD, UMR AGAP, F-33612 Cestas, France
- INRA, UMR BIOGECO, F-33612 Cestas, France
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Huang Y, Zhao X, Zhou D, Zhang H, Zheng W. Phenotypic plasticity of early and late successional forbs in response to shifts in resources. PLoS One 2012; 7:e50304. [PMID: 23185600 PMCID: PMC3503999 DOI: 10.1371/journal.pone.0050304] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Accepted: 10/18/2012] [Indexed: 11/19/2022] Open
Abstract
We compared the phenotypic plasticity of two early successional forbs of nutrient-poor mobile dunes (Agriophyllum squarrosum and Corispermum macrocarpum) and two later successional forbs (weeds) of stabilized, higher nutrient dunes and cropland (Chenopodium acuminatum and Salsola collina) to variations in environmental factors. A controlled (including soil nutrients, water, and population density) greenhouse experiment was conducted in Horqin sandy land, China. Late successional species had high plasticity in growth response to nutrients and water or high performance in high soil nutrients and water, reflecting their higher nutrient habitat. In contrast, the early successional species have low plasticity, reflecting their adaptation to resource-poor early successional soil. Late successional species did not always have higher reproductive effort than early successional species. Plants did not have a uniform strategy of increasing reproductive effort with any environmental stressors. Reproductive effort increased with increasing water availability and decreasing nutrient levels, while density had no effect. Patterns of plasticity traits for late successional species exhibited a complex of Master-of-some and Jack-of-all-trades. Late successional species had higher performance or higher plasticity than early successional species.
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Affiliation(s)
- Yingxin Huang
- Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China.
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Belén Arias M, Josefina Poupin M, Lardies MA. Plasticity of life-cycle, physiological thermal traits and Hsp70 gene expression in an insect along the ontogeny: Effect of temperature variability. J Therm Biol 2011. [DOI: 10.1016/j.jtherbio.2011.06.011] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Granado-Yela C, García-Verdugo C, Carrillo K, Rubio DE Casas R, Kleczkowski LA, Balaguer L. Temporal matching among diurnal photosynthetic patterns within the crown of the evergreen sclerophyll Olea europaea L. PLANT, CELL & ENVIRONMENT 2011; 34:800-810. [PMID: 21276011 DOI: 10.1111/j.1365-3040.2011.02283.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Trees are modular organisms that adjust their within-crown morphology and physiology in response to within-crown light gradients. However, whether within-plant variation represents a strategy for optimizing light absorption has not been formally tested. We investigated the arrangement of the photosynthetic surface throughout one day and its effects on the photosynthetic process, at the most exposed and most sheltered crown layers of a wild olive tree (Olea europaea L.). Similar measurements were made for cuttings taken from this individual and grown in a greenhouse at contrasted irradiance-levels (100 and 20% full sunlight). Diurnal variations in light interception, carbon fixation and carbohydrate accumulation in sun leaves were negatively correlated with those in shade leaves under field conditions when light intensity was not limiting. Despite genetic identity, these complementary patterns were not found in plants grown in the greenhouse. The temporal disparity among crown positions derived from specialization of the photosynthetic behaviour at different functional and spatial scales: architectural structure (crown level) and carbon budget (leaf level). Our results suggest that the profitability of producing a new module may not only respond to construction costs or light availability, but also rely on its spatio-temporal integration within the productive processes at the whole-crown level.
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Affiliation(s)
- C Granado-Yela
- Departamento de Biología Vegetal I, Universidad Complutense de Madrid, Madrid 28040, Spain.
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Barberis L, Condat C, Gliozzi A, Delsanto P. Concurrent growth of phenotypic features: A phenomenological universalities approach. J Theor Biol 2010; 264:123-9. [DOI: 10.1016/j.jtbi.2009.12.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2009] [Revised: 11/25/2009] [Accepted: 12/22/2009] [Indexed: 11/17/2022]
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FALLOUR-RUBIO D, GUIBAL F, KLEIN EK, BARITEAU M, LEFÈVRE F. Rapid changes in plasticity across generations within an expanding cedar forest. J Evol Biol 2009; 22:553-63. [DOI: 10.1111/j.1420-9101.2008.01662.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Boyden S, Binkley D, Stape JL. Competition among eucalyptus trees depends on genetic variation and resource supply. Ecology 2009; 89:2850-9. [PMID: 18959322 DOI: 10.1890/07-1733.1] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Genetic variation and environmental heterogeneity fundamentally shape the interactions between plants of the same species. According to the resource partitioning hypothesis, competition between neighbors intensifies as their similarity increases. Such competition may change in response to increasing supplies of limiting resources. We tested the resource partitioning hypothesis in stands of genetically identical (clone-origin) and genetically diverse (seed-origin) Eucalyptus trees with different water and nutrient supplies, using individual-based tree growth models. We found that genetic variation greatly reduced competitive interactions between neighboring trees, supporting the resource partitioning hypothesis. The importance of genetic variation for Eucalyptus growth patterns depended strongly on local stand structure and focal tree size. This suggests that spatial and temporal variation in the strength of species interactions leads to reversals in the growth rank of seed-origin and clone-origin trees. This study is one of the first to experimentally test the resource partitioning hypothesis for intergenotypic vs. intragenotypic interactions in trees. We provide evidence that variation at the level of genes, and not just species, is functionally important for driving individual and community-level processes in forested ecosystems.
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Affiliation(s)
- Suzanne Boyden
- Department of Forest, Rangeland and Watershed Stewardship, and Graduate Degree Program in Ecology, Colorado State University, Ft. Collins, Colorado 80523, USA.
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Rubio De Casas R, Vargas P, Pérez-Corona E, Manrique E, Quintana JR, García-Verdugo C, Balaguer L. Field patterns of leaf plasticity in adults of the long-lived evergreen Quercus coccifera. ANNALS OF BOTANY 2007; 100:325-34. [PMID: 17576660 PMCID: PMC2735331 DOI: 10.1093/aob/mcm112] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2006] [Accepted: 04/25/2007] [Indexed: 05/13/2023]
Abstract
BACKGROUND AND AIMS Quercus coccifera, as a long-lived sprouter, responds plastically to environmental variation. In this study, the role of foliar plasticity as a mechanism of habitat selection and modification within the canopy and across contrasted habitats was characterized. An examination was made of the differential contribution of inner and outer canopy layers to the crown plasticity expressed in the field by adult individuals and its dependence on environmental and genetic factors. METHODS Within-crown variation in eight foliar traits was examined in nine populations dominated by Q. coccifera. The difference between mean trait values at the inner and outer canopy layers was used as a proxy for crown plasticity to light. Correlations between geographic distances, environmental differences (climatic and edaphic) and phenotypic divergence (means and plasticities) were assessed by partial Mantel tests. A subset of field measurements was compared with data from a previous common garden experiment. KEY RESULTS Phenotypic adjustment of sun leaves contributed significantly to the field variation in crown plasticity. Plasticity in leaf angle, lobation, xanthophyll cycle pigments and beta-carotene content was expressed in sun and shade leaves concurrently and in opposite directions. Phenotypic plasticity was more strongly correlated with environmental variation than mean trait values. Populations of taller plants with larger, thinner (higher specific leaf area) and less spiny leaves exhibited greater plasticity. In these populations, the midday light environment was more uniform at the inner than at the outer canopy layers. Field and common garden data ranked populations in the same order of plasticity. CONCLUSIONS The expression of leaf plasticity resulted in a phenotypic differentiation that suggests a mechanism of habitat selection through division of labour across canopy layers. Signs of plasticity-mediated habitat modification were found only in the most plastic populations. Intracanopy plasticity was sensitive to environmental variation but also exhibited a strong genetic component.
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Affiliation(s)
- Rafael Rubio De Casas
- Departamento de Biología Vegetal I, Universidad Complutense de Madrid, José Antonio Novais 2, 28040 Madrid, Spain
- Real Jardín Botánico de Madrid, CSIC, Plaza Murillo 2, 28014 Madrid, Spain
| | - Pablo Vargas
- Real Jardín Botánico de Madrid, CSIC, Plaza Murillo 2, 28014 Madrid, Spain
| | - Esther Pérez-Corona
- Departamento de Ecología, Universidad Complutense de Madrid, José Antonio Novais 2, 28040 Madrid, Spain
| | - Esteban Manrique
- Centro de Ciencias Medioambientales, CSIC, Serrano 115 Dpdo., 28006 Madrid, Spain
| | - José Ramón Quintana
- Departamento de Edafología, Universidad Complutense de Madrid, Pza. Ramón y Cajal S/N, 28040, Madrid, Spain
| | - Carlos García-Verdugo
- Departamento de Biología Vegetal I, Universidad Complutense de Madrid, José Antonio Novais 2, 28040 Madrid, Spain
- Real Jardín Botánico de Madrid, CSIC, Plaza Murillo 2, 28014 Madrid, Spain
| | - Luis Balaguer
- Departamento de Biología Vegetal I, Universidad Complutense de Madrid, José Antonio Novais 2, 28040 Madrid, Spain
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