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Vinod N, Slot M, McGregor IR, Ordway EM, Smith MN, Taylor TC, Sack L, Buckley TN, Anderson-Teixeira KJ. Thermal sensitivity across forest vertical profiles: patterns, mechanisms, and ecological implications. THE NEW PHYTOLOGIST 2023; 237:22-47. [PMID: 36239086 DOI: 10.1111/nph.18539] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Accepted: 07/31/2022] [Indexed: 06/16/2023]
Abstract
Rising temperatures are influencing forests on many scales, with potentially strong variation vertically across forest strata. Using published research and new analyses, we evaluate how microclimate and leaf temperatures, traits, and gas exchange vary vertically in forests, shaping tree, and ecosystem ecology. In closed-canopy forests, upper canopy leaves are exposed to the highest solar radiation and evaporative demand, which can elevate leaf temperature (Tleaf ), particularly when transpirational cooling is curtailed by limited stomatal conductance. However, foliar traits also vary across height or light gradients, partially mitigating and protecting against the elevation of upper canopy Tleaf . Leaf metabolism generally increases with height across the vertical gradient, yet differences in thermal sensitivity across the gradient appear modest. Scaling from leaves to trees, canopy trees have higher absolute metabolic capacity and growth, yet are more vulnerable to drought and damaging Tleaf than their smaller counterparts, particularly under climate change. By contrast, understory trees experience fewer extreme high Tleaf 's but have fewer cooling mechanisms and thus may be strongly impacted by warming under some conditions, particularly when exposed to a harsher microenvironment through canopy disturbance. As the climate changes, integrating the patterns and mechanisms reviewed here into models will be critical to forecasting forest-climate feedback.
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Affiliation(s)
- Nidhi Vinod
- Conservation Ecology Center, Smithsonian's National Zoo & Conservation Biology Institute, Front Royal, VA, 22630, USA
- Department of Ecology and Evolutionary Biology, UCLA, Los Angeles, CA, 90039, USA
| | - Martijn Slot
- Smithsonian Tropical Research Institute, Apartado Postal 0843-03092, Panama City, Panama
| | - Ian R McGregor
- Center for Geospatial Analytics, North Carolina State University, Raleigh, NC, 27607, USA
| | - Elsa M Ordway
- Department of Ecology and Evolutionary Biology, UCLA, Los Angeles, CA, 90039, USA
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, 02138, USA
| | - Marielle N Smith
- Department of Forestry, Michigan State University, East Lansing, MI, 48824, USA
- School of Natural Sciences, College of Environmental Sciences and Engineering, Bangor University, Bangor, LL57 2DG, UK
| | - Tyeen C Taylor
- Department of Civil & Environmental Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Lawren Sack
- Department of Ecology and Evolutionary Biology, UCLA, Los Angeles, CA, 90039, USA
| | - Thomas N Buckley
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA
| | - Kristina J Anderson-Teixeira
- Conservation Ecology Center, Smithsonian's National Zoo & Conservation Biology Institute, Front Royal, VA, 22630, USA
- Smithsonian Tropical Research Institute, Apartado Postal 0843-03092, Panama City, Panama
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Morcillo L, Bautista S. Interacting water, nutrients, and shrub age control steppe grass‐on‐shrub competition: Implications for restoration. Ecosphere 2022. [DOI: 10.1002/ecs2.4093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Luna Morcillo
- Mediterranean Center for Environmental Studies (CEAM Foundation), Joint Research Unit University of Alicante‐CEAM University of Alicante Alicante Spain
| | - Susana Bautista
- Department of Ecology and IMEM University of Alicante Alicante Spain
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3
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Patterns of Leaf Morphological Traits of Beech (Fagus sylvatica L.) along an Altitudinal Gradient. FORESTS 2021. [DOI: 10.3390/f12101297] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Broadleaved tree species in mountainous populations usually demonstrate high levels of diversity in leaf morphology among individuals, as a response to a variety of environmental conditions associated with changes in altitude. We investigated the parameters shaping leaf morphological diversity in 80 beech individuals (Fagus sylvatica L.), in light and shade leaves, growing along an elevational gradient and under different habitat types on Mt. Paggeo in northeastern Greece. A clear altitudinal pattern was observed in the morphological leaf traits expressing lamina size and shape; with increasing altitude, trees had leaves with smaller laminas, less elongated outlines, and fewer pairs of secondary veins. However, this altitudinal trend in leaf morphology was varied in different habitat types. Furthermore, the shade leaves and light leaves showed differences in their altitudinal trend. Traits expressing lamina shape in shade leaves were more related to altitude, while leaf size appeared to be more influenced by habitat type. While the altitudinal trend in leaf morphology has been well documented for numerous broadleaved tree species, in a small spatial scale, different patterns emerged across different habitat types. This morphological variability among trees growing in a mountainous population indicates a high potential for adaptation to environmental extremes.
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Maslova NP, Karasev EV, Xu SL, Spicer RA, Liu XY, Kodrul TM, Spicer TEV, Jin JH. Variations in morphological and epidermal features of shade and sun leaves of two species: Quercus bambusifolia and Q. myrsinifolia. AMERICAN JOURNAL OF BOTANY 2021; 108:1441-1463. [PMID: 34431508 DOI: 10.1002/ajb2.1706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Accepted: 02/09/2021] [Indexed: 06/13/2023]
Abstract
PREMISE Microclimatic differences between the periphery and the interior of tree crowns result in a variety of adaptive leaf macromorphological and anatomical features. Our research was designed to reveal criteria for sun/shade leaf identification in two species of evergreen oaks, applicable to both modern and fossil leaves. We compared our results with those in other species similarly studied. METHODS For both Quercus bambusifolia and Q. myrsinifolia (section Cyclobalanopsis), leaves from single mature trees with well-developed crowns were collected in the South China Botanical Garden, Guangzhou, China. We focus on leaf characters often preserved in fossil material. SVGm software was used for macromorphological measurement. Quantitative analyses were performed and box plots generated using R software with IDE Rstudio. Leaf cuticles were prepared using traditional botanical techniques. RESULTS Principal characters for distinguishing shade and sun leaves in the studied oaks were identified as leaf lamina length to width ratio (L/W), and the degree of development of venation networks. For Q. myrsinifolia, shade and sun leaves differ in tooth morphology and the ratio of toothed lamina length to overall lamina length. The main epidermal characters are ordinary cell size and anticlinal wall outlines. For both species, plasticity within shade leaves exceeds that of sun leaves. CONCLUSIONS Morphological responses to sun and shade in the examined oaks are similar to those in other plant genera, pointing to useful generalizations for recognizing common foliar polymorphisms that must be taken into account when determining the taxonomic position of both modern and fossil plants.
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Affiliation(s)
- Natalia P Maslova
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China
- Borissiak Paleontological Institute, Russian Academy of Sciences, Moscow, 117647, Russia
| | - Eugeny V Karasev
- Borissiak Paleontological Institute, Russian Academy of Sciences, Moscow, 117647, Russia
- Kazan Federal University, Kazan, Respublika Tatarstan, 420000, Russia
| | - Sheng-Lan Xu
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China
| | - Robert A Spicer
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, 666303, China
- School of Environment, Earth and Ecosystem Sciences, The Open University, Milton Keynes, MK7 6AA, UK
| | - Xiao-Yan Liu
- School of Geography, South China Normal University, Guangzhou, 510631, China
| | - Tatiana M Kodrul
- Geological Institute, Russian Academy of Sciences, Moscow, 119017, Russia
| | - Teresa E V Spicer
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, 666303, China
| | - Jian-Hua Jin
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China
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5
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Vescio R, Abenavoli MR, Araniti F, Musarella CM, Sofo A, Laface VLA, Spampinato G, Sorgonà A. The Assessment and the Within-Plant Variation of the Morpho-Physiological Traits and VOCs Profile in Endemic and Rare Salvia ceratophylloides Ard. (Lamiaceae). PLANTS (BASEL, SWITZERLAND) 2021; 10:474. [PMID: 33802380 PMCID: PMC7998927 DOI: 10.3390/plants10030474] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 02/23/2021] [Accepted: 02/26/2021] [Indexed: 06/12/2023]
Abstract
Salvia ceratophylloides (Ard.) is an endemic and rare plant species recently rediscovered as very few individuals at two different Southern Italy sites. The study of within-plant variation is fundamental to understand the plant adaptation to the local conditions, especially in rare species, and consequently to preserve plant biodiversity. Here, we reported the variation of the morpho-ecophysiological and metabolic traits between the sessile and petiolate leaf of S. ceratophylloides plants at two different sites for understanding the adaptation strategies for surviving in these habitats. The S. ceratophylloides individuals exhibited different net photosynthetic rate, maximum quantum yield, light intensity for the saturation of the photosynthetic machinery, stomatal conductance, transpiration rate, leaf area, fractal dimension, and some volatile organic compounds (VOCs) between the different leaf types. This within-plant morpho-physiological and metabolic variation was dependent on the site. These results provide empirical evidence of sharply within-plant variation of the morpho-physiological traits and VOCs profiles in S. ceratophylloides, explaining the adaptation to the local conditions.
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Affiliation(s)
- Rosa Vescio
- Department of Agricultural Sciences, “Mediterranea” University of Reggio Calabria, Feo di Vito, 89124 Reggio Calabria, Italy; (R.V.); (M.R.A.); (C.M.M.); (V.L.A.L.); (G.S.)
| | - Maria Rosa Abenavoli
- Department of Agricultural Sciences, “Mediterranea” University of Reggio Calabria, Feo di Vito, 89124 Reggio Calabria, Italy; (R.V.); (M.R.A.); (C.M.M.); (V.L.A.L.); (G.S.)
| | - Fabrizio Araniti
- Department of Agricultural and Environmental Sciences—Production, Landscape, Agroenergy, Università Degli Studi di Milano, Via G. Celoria 2, 20133 Milan, Italy;
| | - Carmelo Maria Musarella
- Department of Agricultural Sciences, “Mediterranea” University of Reggio Calabria, Feo di Vito, 89124 Reggio Calabria, Italy; (R.V.); (M.R.A.); (C.M.M.); (V.L.A.L.); (G.S.)
| | - Adriano Sofo
- Department of European and Mediterranean Cultures, Architecture, Environment, Cultural Heritage (DiCEM), University of Basilicata, Via Lanera 20, 75100 Matera, Italy;
| | - Valentina Lucia Astrid Laface
- Department of Agricultural Sciences, “Mediterranea” University of Reggio Calabria, Feo di Vito, 89124 Reggio Calabria, Italy; (R.V.); (M.R.A.); (C.M.M.); (V.L.A.L.); (G.S.)
| | - Giovanni Spampinato
- Department of Agricultural Sciences, “Mediterranea” University of Reggio Calabria, Feo di Vito, 89124 Reggio Calabria, Italy; (R.V.); (M.R.A.); (C.M.M.); (V.L.A.L.); (G.S.)
| | - Agostino Sorgonà
- Department of Agricultural Sciences, “Mediterranea” University of Reggio Calabria, Feo di Vito, 89124 Reggio Calabria, Italy; (R.V.); (M.R.A.); (C.M.M.); (V.L.A.L.); (G.S.)
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6
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Size variation does not act as insurance in bumble bees; instead, workers add weight in an unpredictable environment. Anim Behav 2020. [DOI: 10.1016/j.anbehav.2020.10.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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7
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Valdés-Correcher E, Bourdin A, González-Martínez SC, Moreira X, Galmán A, Castagneyrol B, Hampe A. Leaf chemical defences and insect herbivory in oak: accounting for canopy position unravels marked genetic relatedness effects. ANNALS OF BOTANY 2020; 126:865-872. [PMID: 32463869 PMCID: PMC7539359 DOI: 10.1093/aob/mcaa101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 05/22/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND AND AIMS Highly controlled experiments document that plant genetic diversity and relatedness can shape herbivore communities and patterns of herbivory. Evidence from the field is, however, scarce and inconsistent. We assessed whether a genetic signal underlying herbivory can be detected in oak woodlands when accounting for variation at smaller (within-tree) and larger (among-stand) scales. METHODS We tested relationships between tree genetic relatedness, leaf chemical defences and insect herbivory for different canopy layers in 240 trees from 15 pedunculate oak (Quercus robur) forest stands. We partitioned sources of variability in herbivory and defences among stands, individuals and branches. KEY RESULTS Leaf defences, insect herbivory and their relationship differed systematically between the upper and the lower tree canopy. When accounting for this canopy effect, the variation explained by tree genetic relatedness rose from 2.8 to 34.1 % for herbivory and from 7.1 to 13.8 % for leaf defences. The effect was driven by markedly stronger relationships in the upper canopy. CONCLUSIONS Our findings illustrate that considerable effects of the host plant genotype on levels of leaf chemical defences and associated insect herbivory can be detected in natural tree populations when within-individual variation is properly accounted for.
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Affiliation(s)
| | | | | | - Xoaquín Moreira
- Misión Biológica de Galicia (MBG-CSIC), Pontevedra, Galicia, Spain
| | - Andrea Galmán
- Misión Biológica de Galicia (MBG-CSIC), Pontevedra, Galicia, Spain
| | | | - Arndt Hampe
- INRAE, Univ. Bordeaux, BIOGECO, Cestas, France
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Caron BO, Pinheiro MVM, Korcelski C, Schwerz F, Elli EF, Sgarbossa J, Tibolla LB. Agroforestry systems and understory harvest management: the impact on growth and productivity of dual-purpose wheat. AN ACAD BRAS CIENC 2019; 91:e20180667. [PMID: 31778451 DOI: 10.1590/0001-3765201920180667] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 10/26/2018] [Indexed: 11/22/2022] Open
Abstract
The objective of the study was to evaluate the growth and production efficiency of forage-grain dual-purpose wheat in two arrangements and four agroforestry systems (Intercrop-I and Intercrop-II), as well as to evaluate crop management for the wheat crops in two planting seasons (Crop Season I-2014 and Crop Season II-2015. The experiment was conducted in a randomized complete block design, factorial scheme 7x2x2, with seven cultivation systems Eucalyptus urophylla x Eucalyptus grandis Intercrop-II and Intercrop-I; Peltophorum dubium Intercrop-II and Intercrop-I; P. rigida Intercrop-I; S. parahyba Intercrop-I; a wheat monoculture with no tree species present; and two harvest management techniques (with and without harvesting of the forage species). Agroforestry systems generated shading for wheat plants, with a higher phyllochron and lower values of leaf area index of those individuals kept under trees with higher crown shading (non-deciduous trees) due to the lower transmissivity of solar radiation. The systems composed with Schizolobium parahyba in Intercrop-I and Parapiptadenia rigida in Intercrop-I provide a minor phyllochron to the wheat, resulting in a higher leaf area index and dry matter yield. Thus, the cultivation of tree species and dual-skilled agricultural crops, such as wheat, provides promising alternatives for the future use of land in tropical countries.
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Affiliation(s)
- Braulio O Caron
- Department of Agronomic and Environmental Sciences, Federal University of Santa Maria, Frederico Westphalen Campus, Linha 7 de setembro, s/n, BR 386, Km 40, 98400-000 Frederico Westphalen, RS, Brazil
| | - Marcos Vinícius M Pinheiro
- Department of Agronomic and Environmental Sciences, Federal University of Santa Maria, Frederico Westphalen Campus, Linha 7 de setembro, s/n, BR 386, Km 40, 98400-000 Frederico Westphalen, RS, Brazil
| | - Cleiton Korcelski
- Agronomy/PPGAgro, Passo Fundo University, Av. Brasil Leste, 99052-900 Passo Fundo, RS, Brazil
| | - Felipe Schwerz
- Luiz de Queiroz College of Agriculture, University of São Paulo (ESALQ-USP), Department of Plant Science, Avenida Pádua Dias, 11, 13418-900 Piracicaba, SP, Brazil
| | - Elvis Felipe Elli
- Luiz de Queiroz College of Agriculture, University of São Paulo (ESALQ-USP), Department of Biosystems Engineering, Avenida Pádua Dias, 11, 13418-900 Piracicaba, SP, Brazil
| | - Jaqueline Sgarbossa
- Department of Agronomic and Environmental Sciences, Federal University of Santa Maria, Frederico Westphalen Campus, Linha 7 de setembro, s/n, BR 386, Km 40, 98400-000 Frederico Westphalen, RS, Brazil
| | - Liliane B Tibolla
- Department of Agronomic and Environmental Sciences, Federal University of Santa Maria, Frederico Westphalen Campus, Linha 7 de setembro, s/n, BR 386, Km 40, 98400-000 Frederico Westphalen, RS, Brazil
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Ventre-Lespiaucq A, Flanagan NS, Ospina-Calderón NH, Delgado JA, Escudero A. Midday Depression vs. Midday Peak in Diurnal Light Interception: Contrasting Patterns at Crown and Leaf Scales in a Tropical Evergreen Tree. FRONTIERS IN PLANT SCIENCE 2018; 9:727. [PMID: 29904391 PMCID: PMC5990892 DOI: 10.3389/fpls.2018.00727] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 05/14/2018] [Indexed: 05/25/2023]
Abstract
Crown architecture usually is heterogeneous as a result of foraging in spatially and temporally heterogeneous light environments. Ecologists are only beginning to identify the importance of temporal heterogeneity for light acquisition in plants, especially at the diurnal scale. Crown architectural heterogeneity often leads to a diurnal variation in light interception. However, maximizing light interception during midday may not be an optimal strategy in environments with excess light. Instead, long-lived plants are expected to show crown architectures and leaf positions that meet the contrasting needs of light interception and avoidance of excess light on a diurnal basis. We expected a midday depression in the diurnal course of light interception both at the whole-crown and leaf scales, as a strategy to avoid the interception of excessive irradiance. We tested this hypothesis in a population of guava trees (Psidium guajava L.) growing in an open tropical grassland. We quantified three crown architectural traits: intra-individual heterogeneity in foliage clumping, crown openness, and leaf position angles. We estimated the diurnal course of light interception at the crown scale using hemispheric photographs, and at the leaf scale using the cosine of solar incidence. Crowns showed a midday depression in light interception, while leaves showed a midday peak. These contrasting patterns were related to architectural traits. At the crown scale, the midday depression of light interception was linked to a greater crown openness and foliage clumping in crown tops than in the lateral parts of the crown. At the leaf scale, an average inclination angle of 45° led to the midday peak in light interception, but with a huge among-leaf variation in position angles. The mismatch in diurnal course of light interception at crown and leaf scales can indicate that different processes are being optimized at each scale. These findings suggest that the diurnal course of light interception may be an important dimension of the resource acquisition strategies of long-lived woody plants. Using a temporal approach as the one applied here may improve our understanding of the diversity of crown architectures found across and within environments.
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Affiliation(s)
- Agustina Ventre-Lespiaucq
- Area of Biodiversity and Conservation, Department of Biology and Geology, Physics and Inorganic Chemistry, Universidad Rey Juan Carlos, Móstoles, Spain
| | - Nicola S Flanagan
- Department of Natural Sciences and Mathematics, Pontificia Universidad Javeriana Sede Cali, Cali, Colombia
| | - Nhora H Ospina-Calderón
- Department of Biology, Edificio 320, Ciudadela Universitaria Melendez, Universidad del Valle, Cali, Colombia
| | - Juan A Delgado
- Department of Ecology, Faculty of Biology, Universidad Complutense de Madrid, Madrid, Spain
| | - Adrián Escudero
- Area of Biodiversity and Conservation, Department of Biology and Geology, Physics and Inorganic Chemistry, Universidad Rey Juan Carlos, Móstoles, Spain
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10
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Besnard G, Terral JF, Cornille A. On the origins and domestication of the olive: a review and perspectives. ANNALS OF BOTANY 2018; 121:385-403. [PMID: 29293871 PMCID: PMC5838823 DOI: 10.1093/aob/mcx145] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 10/12/2017] [Indexed: 05/18/2023]
Abstract
Background Unravelling domestication processes is crucial for understanding how species respond to anthropogenic pressures, forecasting crop responses to future global changes and improving breeding programmes. Domestication processes for clonally propagated perennials differ markedly from those for seed-propagated annual crops, mostly due to long generation times, clonal propagation and recurrent admixture with local forms, leading to a limited number of generations of selection from wild ancestors. However, additional case studies are required to document this process more fully. Scope The olive is an iconic species in Mediterranean cultural history. Its multiple uses and omnipresence in traditional agrosystems have made this species an economic pillar and cornerstone of Mediterranean agriculture. However, major questions about the domestication history of the olive remain unanswered. New paleobotanical, archeological, historical and molecular data have recently accumulated for olive, making it timely to carry out a critical re-evaluation of the biogeography of wild olives and the history of their cultivation. We review here the chronological history of wild olives and discuss the questions that remain unanswered, or even unasked, about their domestication history in the Mediterranean Basin. We argue that more detailed ecological genomics studies of wild and cultivated olives are crucial to improve our understanding of olive domestication. Multidisciplinary research integrating genomics, metagenomics and community ecology will make it possible to decipher the evolutionary ecology of one of the most iconic domesticated fruit trees worldwide. Conclusion The olive is a relevant model for improving our knowledge of domestication processes in clonally propagated perennial crops, particularly those of the Mediterranean Basin. Future studies on the ecological and genomic shifts linked to domestication in olive and its associated community will provide insight into the phenotypic and molecular bases of crop adaptation to human uses.
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Affiliation(s)
- Guillaume Besnard
- CNRS-UPS-ENSFEA-IRD, EDB, UMR 5174, Université Paul Sabatier, Toulouse Cedex , France
| | - Jean-Frédéric Terral
- ISEM, UMR 5554, CNRS-Université de Montpellier-IRD-EPHE, Equipe Dynamique de la Biodiversité, Anthropo-écologie, Montpellier Cedex, France
- International Associated Laboratory (LIA, CNRS) EVOLea, Zürich, Switzerland
| | - Amandine Cornille
- Center for Adaptation to a Changing Environment, ETH Zürich, Zürich, Switzerland
- GQE - Le Moulon, INRA, Univ. Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, Gif-sur-Yvette, France
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11
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Chondrogiannis C, Grammatikopoulos G. Photosynthesis in developing leaf of juveniles and adults of three Mediterranean species with different growth forms. PHOTOSYNTHESIS RESEARCH 2016; 130:427-444. [PMID: 27220729 DOI: 10.1007/s11120-016-0276-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 05/16/2016] [Indexed: 05/14/2023]
Abstract
Leaf development is influenced by almost all the prevailing environmental conditions as well as from the conditions at the time of bud formation. Furthermore, the growth form of a plant determines the leaf longevity and subsequently the investment in biomass and the internal structure of the mesophyll. Therefore, photosynthetic traits of a growing leaf, though, partly predetermined, should also acclimate to temporal changes during developmental period. In addition, the age of the plant can affect photosynthesis of the growing leaf, yet, in the majority of studies, the age is associated to the size of the plant. To test if the reproductive status of the plant affects the time kinetics of the photosynthetic capacity of a growing leaf and the relative contribution of the plants' growth form to the whole procedure, field measurements were conducted in juveniles (prereproductive individuals) and adults (fully reproductive individuals) of an evergreen sclerophyllous shrub (Nerium oleander), a semi-deciduous dimorphic shrub (Phlomis fruticosa), and a winter deciduous tree with pre-leafing flowering (Cercis siliquastrum). PSII structural and functional integrity was progressively developed in all species, but already completed, only some days after leaf expansion in P. fruticosa. Developing leaf as well as fully developed leaf in adults of C. siliquastrum showed enhanced relative size of the pool of final PSI electron acceptors. Photosynthetic traits between juveniles and adults of P. fruticosa were similar, though the matured leaf of adults exhibited lower transpiration rates and improved water-use efficiency than that of juveniles. Adults of the evergreen shrub attained higher CO2 assimilation rate than juveniles in matured leaf which can be attributed to higher electron flow devoted to carboxylation, and lower photorespiration rate. The reproductive phase of the plant seemed to be involved in modifications of the PSII and PSI functions of the deciduous tree, in carboxylation and photorespiration traits of the evergreen shrub, and in water conductance efficiency of the semi-deciduous shrub. However, it is interesting, that regardless of the growth form of the plant and the prospective leaf longevity of the developing leaf, adults need to support flowering outmatch juveniles, in terms of photosynthesis.
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Affiliation(s)
- Christos Chondrogiannis
- Laboratory of Plant Physiology, Department of Biology, University of Patras, Rio, 26504, Patras, Greece
| | - George Grammatikopoulos
- Laboratory of Plant Physiology, Department of Biology, University of Patras, Rio, 26504, Patras, Greece.
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12
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Besnard G, Cuneo P. An ecological and evolutionary perspective on the parallel invasion of two cross-compatible trees. AOB PLANTS 2016; 8:plw056. [PMID: 27519914 PMCID: PMC5018386 DOI: 10.1093/aobpla/plw056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 08/01/2016] [Indexed: 05/29/2023]
Abstract
Invasive trees are generally seen as ecosystem-transforming plants that can have significant impacts on native vegetation, and often require management and control. Understanding their history and biology is essential to guide actions of land managers. Here, we present a summary of recent research into the ecology, phylogeography and management of invasive olives, which are now established outside of their native range as high ecological impact invasive trees. The parallel invasion of European and African olive in different climatic zones of Australia provides an interesting case study of invasion, characterized by early genetic admixture between domesticated and wild taxa. Today, the impact of the invasive olives on native vegetation and ecosystem function is of conservation concern, with European olive a declared weed in areas of South Australia, and African olive a declared weed in New South Wales and Pacific islands. Population genetics was used to trace the origins and invasion of both subspecies in Australia, indicating that both olive subspecies have hybridized early after introduction. Research also indicates that African olive populations can establish from a low number of founder individuals even after successive bottlenecks. Modelling based on distributional data from the native and invasive range identified a shift of the realized ecological niche in the Australian invasive range for both olive subspecies, which was particularly marked for African olive. As highly successful and long-lived invaders, olives offer further opportunities to understand the genetic basis of invasion, and we propose that future research examines the history of introduction and admixture, the genetic basis of adaptability and the role of biotic interactions during invasion. Advances on these questions will ultimately improve predictions on the future olive expansion and provide a solid basis for better management of invasive populations.
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Affiliation(s)
- Guillaume Besnard
- CNRS, UPS, ENFA, Laboratoire Evolution & Diversité Biologique, UMR 5174, 31062 Toulouse 4, France
| | - Peter Cuneo
- The Australian PlantBank, Royal Botanic Gardens and Domain Trust, The Australian Botanic Garden, Mount Annan, NSW 2567, Australia
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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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Larbi A, Vázquez S, El-Jendoubi H, Msallem M, Abadía J, Abadía A, Morales F. Canopy light heterogeneity drives leaf anatomical, eco-physiological, and photosynthetic changes in olive trees grown in a high-density plantation. PHOTOSYNTHESIS RESEARCH 2015; 123:141-55. [PMID: 25344757 DOI: 10.1007/s11120-014-0052-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 10/21/2014] [Indexed: 05/11/2023]
Abstract
In the field, leaves may face very different light intensities within the tree canopy. Leaves usually respond with light-induced morphological and photosynthetic changes, in a phenomenon known as phenotypic plasticity. Canopy light distribution, leaf anatomy, gas exchange, chlorophyll fluorescence, and pigment composition were investigated in an olive (Olea europaea, cvs. Arbequina and Arbosana) orchard planted with a high-density system (1,250 trees ha(-1)). Sampling was made from three canopy zones: a lower canopy (<1 m), a central one (1-2 m), and an upper one (>2 m). Light interception decreased significantly in the lower canopy when compared to the central and top ones. Leaf angle increased and photosynthetic rates and non-photochemical quenching (NPQ) decreased significantly and progressively from the upper canopy to the central and the lower canopies. The largest leaf areas were found in the lower canopy, especially in the cultivar Arbequina. The palisade and spongy parenchyma were reduced in thickness in the lower canopy when compared to the upper one, in the former due to a decrease in the number of cell layers from three to two (clearly distinguishable in the light and fluorescence microscopy images). In both cultivars, the concentration of violaxanthin-cycle pigments and β-carotene was higher in the upper than in the lower canopy. Furthermore, the de-epoxidized forms zeaxanthin and antheraxanthin increased significantly in those leaves from the upper canopy, in parallel to the NPQ increases. In conclusion, olive leaves react with morphological and photosynthetic changes to within-crown light gradients. These results strengthen the idea of olive trees as "modular organisms" that adjust the modules morphology and physiology in response to light intensity.
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Affiliation(s)
- Ajmi Larbi
- Institut de l'Olivier, BP 208, Cité Mahrajène, 1082, Tunis, Tunisia
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15
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Escribano‐Rocafort AG, Ventre‐Lespiaucq AB, Granado‐Yela C, López‐Pintor A, Delgado JA, Muñoz V, Dorado GA, Balaguer L. Simplifying data acquisition in plant canopies‐ Measurements of leaf angles with a cell phone. Methods Ecol Evol 2014. [DOI: 10.1111/2041-210x.12141] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Adrián G. Escribano‐Rocafort
- Departamento de Biología Vegetal I Facultad de Ciencias Biológicas Universidad Complutense de Madrid 28040 Madrid Spain
| | - Agustina B. Ventre‐Lespiaucq
- Departamento de Biología Vegetal I Facultad de Ciencias Biológicas Universidad Complutense de Madrid 28040 Madrid Spain
| | - Carlos Granado‐Yela
- Departamento de Biología Vegetal I Facultad de Ciencias Biológicas Universidad Complutense de Madrid 28040 Madrid Spain
| | - Antonio López‐Pintor
- Departamento de Ecología Facultad de Ciencias Biológicas Universidad Complutense de Madrid 28040 Madrid Spain
| | - Juan A. Delgado
- Departamento de Ecología Facultad de Ciencias Biológicas Universidad Complutense de Madrid 28040 Madrid Spain
| | - Vicente Muñoz
- Departamento de Geometría y Topología Facultad de Matemáticas Universidad Complutense de Madrid 28040 Madrid Spain
| | - Gabriel A. Dorado
- Departamento de Proyectos y Planificación Rural Escuela Universitaria de Ingeniería Técnica Forestal Universidad Politécnica de Madrid 28040 Madrid Spain
| | - Luis Balaguer
- Departamento de Biología Vegetal I Facultad de Ciencias Biológicas Universidad Complutense de Madrid 28040 Madrid Spain
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Granado-Yela C, Balaguer L, García-Verdugo C, Carrillo K, Méndez M. Thriving at the limit: Differential reproductive performance in range-edge populations of a Mediterranean sclerophyll (Olea europaea). ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 2013. [DOI: 10.1016/j.actao.2013.07.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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17
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Within-species leaf trait variation and ecological flexibility in resprouting tropical trees. JOURNAL OF TROPICAL ECOLOGY 2012. [DOI: 10.1017/s0266467412000429] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Plants have an inherent flexibility to respond to different environmental conditions. One axis of plant ecophysiological strategy is seen in the spectrum of leaf functional traits. Flexibility in these traits would be suggestive of plants’ phenotypic plasticity in response to environmental changes. This research seeks to identify differences between leaves of sprout and non-sprout shoots of a broad ecological range of neotropical tree species. Using a functional-trait approach, this study assesses a large pool of species for within-species physiological flexibility. Leaf mass per area (LMA) and leaf area were measured for plants of sprout and non-sprout origin for 26 tree species grown in a reforestation plantation in Panama. Sprouts had a consistently lower LMA than non-sprouts, but there was no consistent pattern for leaf area. These trends show that sprouts are more like pioneer species than conspecific saplings, a finding in general agreement with fast sprout growth seen in previous studies. Further, later-successional (high LMA) species showed a greater reduction of LMA in sprouts. These results show that tropical tree species adjust physiologically to changing ecological roles and suggest that certain species may be more resilient than realized to changing climate and disturbance patterns.
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