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Guo X, Schrader J, Shi P, Jiao Y, Miao Q, Xue J, Niklas KJ. Leaf-age and petiole biomass play significant roles in leaf scaling theory. FRONTIERS IN PLANT SCIENCE 2023; 14:1322245. [PMID: 38179478 PMCID: PMC10764501 DOI: 10.3389/fpls.2023.1322245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 12/06/2023] [Indexed: 01/06/2024]
Abstract
Foliage leaves are essential for plant survival and growth, and how plants allocate biomass to their leaves reveals their economic and ecological strategies. Prior studies have shown that leaf-age significantly influences leaf biomass allocation patterns. However, unravelling the effects of ontogeny on partitioning biomass remains a challenge because it is confounded by the effects of environmental factors. Here, we aim to elucidate whether leaf-age affects the allocation to the lamina and petiole by examining leaves of known age growing in the same general environmental context. We sampled 2698 Photinia serratifolia leaves developing in the same environment from April to November 2021, representing eight leaf-ages (n > 300 for each leaf-age). Petiole and lamina biomass, and lamina area were measured to evaluate the scaling relationships using reduced major axis regression protocols. The bootstrap percentile method was used to determine the differences in scaling exponents among the different leaf-ages. ANOVA with Tukey's HSD was used to compare the ratios of petiole and lamina biomass to lamina area across the leaf-ages. Correlation tests were used to determine if exponents, intercepts, and ratios differed significantly across the different leaf-ages. The data indicated that (i) the ratio of petiole and lamina biomass to lamina area and the scaling exponent of lamina biomass versus lamina area correlate positively with leaf-age, and (ii) the scaling exponent of petiole biomass versus lamina area correlates negatively with leaf-age. Leaf maturation process involves an inverse proportional allocation between lamina and petiole biomass for expanding photosynthetic area. This phenomenon underscores the effect of leaf-age on biomass allocation and the importance of adopting an ontogenetic perspective when entertaining plant scaling theories and unravelling the principles governing shifts in biomass allocation throughout the leaf lifespan.
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Affiliation(s)
- Xuchen Guo
- Co-Innovation Centre for Sustainable Forestry in Southern China, Bamboo Research Institute, College of Biology and Environment, Nanjing Forestry University, Nanjing, China
| | - Julian Schrader
- School of Natural Sciences, Macquarie University, Sydney, NSW, Australia
| | - Peijian Shi
- Co-Innovation Centre for Sustainable Forestry in Southern China, Bamboo Research Institute, College of Biology and Environment, Nanjing Forestry University, Nanjing, China
| | - Yabing Jiao
- Co-Innovation Centre for Sustainable Forestry in Southern China, Bamboo Research Institute, College of Biology and Environment, Nanjing Forestry University, Nanjing, China
| | - Qinyue Miao
- Co-Innovation Centre for Sustainable Forestry in Southern China, Bamboo Research Institute, College of Biology and Environment, Nanjing Forestry University, Nanjing, China
| | - Jianhui Xue
- Co-Innovation Centre for Sustainable Forestry in Southern China, Bamboo Research Institute, College of Biology and Environment, Nanjing Forestry University, Nanjing, China
- Institute of Botany, Jiangsu Province and Chinese Academy Sciences, Nanjing, China
| | - Karl J. Niklas
- School of Integrative Plant Science, Cornell University, Ithaca, NY, United States
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2
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Qiao L, Wu Q, Yuan L, Huang X, Yang Y, Li Q, Shahzad N, Li H, Li W. SMALL PLANT AND ORGAN 1 ( SPO1) Encoding a Cellulose Synthase-like Protein D4 (OsCSLD4) Is an Important Regulator for Plant Architecture and Organ Size in Rice. Int J Mol Sci 2023; 24:16974. [PMID: 38069299 PMCID: PMC10707047 DOI: 10.3390/ijms242316974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 11/27/2023] [Accepted: 11/28/2023] [Indexed: 12/18/2023] Open
Abstract
Plant architecture and organ size are considered as important traits in crop breeding and germplasm improvement. Although several factors affecting plant architecture and organ size have been identified in rice, the genetic and regulatory mechanisms remain to be elucidated. Here, we identified and characterized the small plant and organ 1 (spo1) mutant in rice (Oryza sativa), which exhibits narrow and rolled leaf, reductions in plant height, root length, and grain width, and other morphological defects. Map-based cloning revealed that SPO1 is allelic with OsCSLD4, a gene encoding the cellulose synthase-like protein D4, and is highly expressed in the roots at the seedling and tillering stages. Microscopic observation revealed the spo1 mutant had reduced number and width in leaf veins, smaller size of leaf bulliform cells, reduced cell length and cell area in the culm, and decreased width of epidermal cells in the outer glume of the grain. These results indicate the role of SPO1 in modulating cell division and cell expansion, which modulates plant architecture and organ size. It is showed that the contents of endogenous hormones including auxin, abscisic acid, gibberellin, and zeatin tested in the spo1 mutant were significantly altered, compared to the wild type. Furthermore, the transcriptome analysis revealed that the differentially expressed genes (DEGs) are significantly enriched in the pathways associated with plant hormone signal transduction, cell cycle progression, and cell wall formation. These results indicated that the loss of SPO1/OsCSLD4 function disrupted cell wall cellulose synthase and hormones homeostasis and signaling, thus leading to smaller plant and organ size in spo1. Taken together, we suggest the functional role of SPO1/OsCSLD4 in the control of rice plant and organ size by modulating cell division and expansion, likely through the effects of multiple hormonal pathways on cell wall formation.
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Affiliation(s)
- Lei Qiao
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, China (X.H.); (Y.Y.); (Q.L.); (N.S.)
- College of Agronomy, Northwest A&F University, Yangling 712100, China
| | - Qilong Wu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, China (X.H.); (Y.Y.); (Q.L.); (N.S.)
| | - Liuzhen Yuan
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, China (X.H.); (Y.Y.); (Q.L.); (N.S.)
| | - Xudong Huang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, China (X.H.); (Y.Y.); (Q.L.); (N.S.)
| | - Yutao Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, China (X.H.); (Y.Y.); (Q.L.); (N.S.)
| | - Qinying Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, China (X.H.); (Y.Y.); (Q.L.); (N.S.)
| | - Nida Shahzad
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, China (X.H.); (Y.Y.); (Q.L.); (N.S.)
| | - Haifeng Li
- College of Agronomy, Northwest A&F University, Yangling 712100, China
| | - Wenqiang Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, China (X.H.); (Y.Y.); (Q.L.); (N.S.)
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3
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Funk JL, Kimball S, Nguyen MA, Lulow M, Vose GE. Interacting ecological filters influence success and functional composition in restored plant communities over time. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2023; 33:e2899. [PMID: 37335271 DOI: 10.1002/eap.2899] [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: 03/09/2023] [Revised: 05/05/2023] [Accepted: 05/18/2023] [Indexed: 06/21/2023]
Abstract
A trait-based community assembly framework has great potential to direct ecological restoration, but uncertainty over how traits and environmental factors interact to influence community composition over time limits the widespread application of this approach. In this study, we examined how the composition of seed mixes and environment (north- vs. south-facing slope aspect) influence functional composition and native plant cover over time in restored grassland and shrubland communities. Variation in native cover over 4 years was primarily driven by species mix, slope aspect, and a species mix by year interaction rather than an interaction between species mix and slope aspect as predicted. Although native cover was higher on wetter, north-facing slopes for most of the study, south-facing slopes achieved a similar cover (65%-70%) by year 4. While community-weighted mean (CWM) values generally became more resource conservative over time, we found shifts in particular traits across community types and habitats. For example, CWM for specific leaf area increased over time in grassland mixes. Belowground, CWM for root mass fraction increased while CWM for specific root length decreased across all seed mixes. Multivariate functional dispersion remained high in shrub-containing mixes throughout the study, which could enhance invasion resistance and recovery following disturbance. Functional diversity and species richness were initially higher in drier, south-facing slopes compared to north-facing slopes, but these metrics were similar across north- and south-facing slopes by the end of the 4-year study. Our finding that different combinations of traits were favored in south- and north-facing slopes and over time demonstrates that trait-based approaches can be used to identify good restoration candidate species and, ultimately, enhance native plant cover across community types and microhabitat. Changing the composition of planting mixes based on traits could be a useful strategy for restoration practitioners to match species to specific environmental conditions and may be more informative than using seed mixes based on growth form, as species within functional groups can vary tremendously in leaf and root traits.
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Affiliation(s)
- Jennifer L Funk
- Department of Plant Sciences, University of California, Davis, Davis, California, USA
| | - Sarah Kimball
- Center for Environmental Biology, University of California, Irvine, Irvine, California, USA
| | - Monica A Nguyen
- Schmid College of Science and Technology, Chapman University, Orange, California, USA
| | - Megan Lulow
- UCI Nature, University of California, Irvine, Irvine, California, USA
| | - Gregory E Vose
- Department of Ecology and Evolutionary Biology, University of California, Irvine, Irvine, California, USA
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Anderegg LDL. Why can't we predict traits from the environment? THE NEW PHYTOLOGIST 2023; 237:1998-2004. [PMID: 36308517 DOI: 10.1111/nph.18586] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 09/16/2022] [Indexed: 06/16/2023]
Abstract
Plant functional traits are powerful ecological tools, but the relationships between plant traits and climate (or environmental variables more broadly) are often remarkably weak. This presents a paradox: Plant traits govern plant interactions with their environment, but the environment does not strongly predict the traits of plants living there. Unpacking this paradox requires differentiating the mechanisms of trait variation and potential confounds of trait-environment relationships at different evolutionary and ecological scales ranging from within species to among communities. It also necessitates a more integrated understanding of physiological and evolutionary equifinality among many traits and plant strategies, and challenges us to understand how supposedly 'functional' traits integrate into a whole-organism phenotype in ways that may be largely orthogonal to environmental tolerances.
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Affiliation(s)
- Leander D L Anderegg
- Department of Ecology, Evolution & Marine Biology, University of California Santa Barbara, Santa Barbara, CA, 93117, USA
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Wang C, Duan F, Zhou C, Lu J. The altitudinal distribution characteristics of functional traits reflect the resource allocation strategy of Abies georgei var. smithii in southeast Tibet. Front Ecol Evol 2023. [DOI: 10.3389/fevo.2023.1055195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023] Open
Abstract
To explore the adaptation strategies of the aboveground and underground functional traits of alpine plants along an altitudinal gradient, a typical stand of primitive dark coniferous forests (Abies georgei var. smithii.) in southeastern Tibet was taken as the research object in the present study. PCA and correlation analyses were carried out for different organ functional traits (19 key indicators in total), then RDA analysis was done in conjunction with 12 environmental factors. The variation characteristics of the functional traits of leaves, current-year twigs, trunks and fine roots in 6 continuous altitude gradients and the relationships between functional traits and environmental factors were explored. The results showed that soil organic carbon (SOC) may exert a positive effect on the construction of plant defense tissue via changes in functional traits, altitude (Alt) represents the primary influencing factor of wood density (WD) variation, particulate organic carbon (POC) content mainly affected fine root dry matter (RDWC) content and specific root length (SRL), and total potassium (TK) content was the main factor that affected fine root tissue density (RTD). Leaves, current-year twigs, and fine roots exhibited high production or nutrient acquisition capacity at an altitude of 4,000m and showed strong defense and relatively stable water and nutrient transport capacity. In conclusion, the ecological strategy of Abies georgei var. smithii. in Sejila Mountain was more conservative, and the optimal survival area of Abies georgei var. smithii. was located at 4, 000m on the shady slope of Sejila Mountain. It is of paramount significance for exploring the essence of terrestrial ecosystems and their functional processes in extremely high-altitude environments.
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Liang Z, Liu T, Chen X, Xu W, Dong T, Liu Q, Xu X. Twigs of dove tree in high-latitude region tend to increase biomass accumulation in vegetative organs but decrease it in reproductive organs. FRONTIERS IN PLANT SCIENCE 2023; 13:1088955. [PMID: 36714716 PMCID: PMC9880204 DOI: 10.3389/fpls.2022.1088955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 12/22/2022] [Indexed: 06/18/2023]
Abstract
Adaptive traits are an important dimension for studying the interactions between rare plants and environment. Although the endangered mechanism of rare plants has been reported in many studies, how their twigs adapt to heterogeneous environments associated with latitude is still poorly known. Dove tree (Davidia involucrata Baill.), a monotypic rare species in China, was employed as a model species in our study, and the differences in functional traits, growth relationships and resource allocation among components of annual twig were investigated in three latitudinal regions (32°19' N, 30°08' and 27°55') in the Sichuan, Southwest China. Compared with low- and middle-latitude regions, the twig diameter in high-latitude region decreased by 36% and 26%, and dry mass decreased by 32% and 35%, respectively. Moreover, there existed an allometric growth between flower mass and stem mass or leaf mass in high-latitude region but an isometric growth in low- and middle-latitude regions. At the flower level, an isometric growth between bract area and flower stalk mass was detected among in three latitudinal regions, and the flower stalk mass in the low-latitude region was higher than in the middle- and high-latitude regions for a given bract area and flower mass. At the leaf level, the growth rate of petiole mass was significantly higher than those of leaf area, lamina mass and leaf mass among three latitudinal regions, and the petiole mass in the low-latitude region was higher than in the other two regions for a given leaf mass. Our research demonstrated that the twigs of dove tree in high-latitude region tend to become smaller, and resource input increase in stems and leaves but decrease in flowers, which reflects that dove tree can adapt to the environmental changes across different latitudes by adjusting phenotypic traits growth and biomass allocation of twigs.
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Affiliation(s)
- Zhengchuan Liang
- College of Life Science, China West Normal University, Nanchong, Sichuan, China
| | - Tingting Liu
- Scientific Research and Testing Unit, Sichuan Mabian Dafengding National Nature Reserve Protection Center, Leshan, Sichuan, China
| | - Xiaoyan Chen
- College of Life Science, China West Normal University, Nanchong, Sichuan, China
| | - Wenjuan Xu
- College of Life Science, China West Normal University, Nanchong, Sichuan, China
- Key Laboratory of Southwest China Wildlife Resources Conservation (China West Normal University), Ministry of Education, Nanchong, Sichuan, China
| | - Tingfa Dong
- College of Life Science, China West Normal University, Nanchong, Sichuan, China
- Key Laboratory of Southwest China Wildlife Resources Conservation (China West Normal University), Ministry of Education, Nanchong, Sichuan, China
| | - Qinsong Liu
- College of Life Science, China West Normal University, Nanchong, Sichuan, China
- Key Laboratory of Southwest China Wildlife Resources Conservation (China West Normal University), Ministry of Education, Nanchong, Sichuan, China
| | - Xiao Xu
- College of Life Science, China West Normal University, Nanchong, Sichuan, China
- Key Laboratory of Southwest China Wildlife Resources Conservation (China West Normal University), Ministry of Education, Nanchong, Sichuan, China
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7
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Chen K, Pan Y, Li Y, Cheng J, Lin H, Zhuo W, He Y, Fang Y, Jiang Y. Slope position- mediated soil environmental filtering drives plant community assembly processes in hilly shrublands of Guilin, China. FRONTIERS IN PLANT SCIENCE 2023; 13:1074191. [PMID: 36684746 PMCID: PMC9859686 DOI: 10.3389/fpls.2022.1074191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND AND AIMS A major goal of community ecology focuses on trying to understand how environmental filter on plant functional traits drive plant community assembly. However, slopes positions- mediated soil environmental factors on community-weighted mean (CWM) plant traits in shrub community has not been extensively explored to analyze and distinguish assembly processes. METHODS Here, we surveyed woody shrub plant communities from three slope positions (foot, middle, and upper) in a low hilly area of Guilin, China to assess differences in functional trait CWMs and environmental factors across these positions. We also measured the CWMs of four plant functional traits including specific leaf area, leaf dry matter content, leaf chlorophyll content, and leaf thickness and nine abiotic environmental factors, including soil water content, soil organic content, soil pH, soil total nitrogen, soil total phosphorus, soil total potassium, soil available nitrogen, soil available phosphorus, and soil available potassium. We used ANOVA and Tukey HSD multiple comparisons to assess differences in functional trait CWMs and environmental factors across the three slope positions. We used redundancy analysis (RDA) to compare the relationships between CWMs trait and environmental factors along three slope positions, and also quantified slope position-mediated soil environmental filtering on these traits with a three-step trait-based null model approach. RESULTS The CWMs of three leaf functional traits and all soil environmental factors except soil pH showed significant differences across the three slope positions. Soil total nitrogen, available nitrogen, available potassium, and soil organic matter were positively correlated with the CWM specific leaf area and leaf chlorophyll content along the first RDA axis and soil total potassium, total phosphorous, and soil water content were positively correlated with the CWM leaf dry matter content along the second RDA axis. Environmental filtering was detected for the CWM specific leaf area, leaf dry matter content, and leaf chlorophyll content but not leaf thickness at all three slope positions. CONCLUSIONS Ultimately, we found that soil environmental factors vary along slope positions and can cause variability in plant functional traits in shrub communities. Deciduous shrub species with high specific leaf area, low leaf dry matter content, and moderate leaf chlorophyll content dominated at the middle slope position, whereas evergreen species with low specific leaf area and high leaf dry matter content dominated in slope positions with infertile soils, steeper slopes, and more extreme soil water contents. Altogether, our null model approach allowed us to detect patterns of environmental filtering, which differed between traits and can be applied in the future to understand community assembly changes in Chinese hilly forest ecosystems.
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Affiliation(s)
- Kunquan Chen
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guili, China
| | - Yuanfang Pan
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guili, China
- Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai, Guangxi, China
| | - Yeqi Li
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guili, China
| | - Jiaying Cheng
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guili, China
| | - Haili Lin
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guili, China
| | - Wenhua Zhuo
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guili, China
| | - Yan He
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guili, China
| | - Yaocheng Fang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guili, China
| | - Yong Jiang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guili, China
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Guo X, Niklas KJ, Li Y, Xue J, Shi P, Schrader J. Diminishing returns: A comparison between fresh mass vs. area and dry mass vs. area in deciduous species. FRONTIERS IN PLANT SCIENCE 2022; 13:832300. [PMID: 36267947 PMCID: PMC9576923 DOI: 10.3389/fpls.2022.832300] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
"Diminishing returns" in leaf economics occurs when increases in lamina mass (M), which can either be represented by lamina dry mass (DM) or fresh mass (FM), fail to produce proportional increases in leaf surface area (A), such that the scaling exponent (α) for the M vs. A scaling relationship exceeds unity (i.e., α > 1.0). Prior studies have shown that FM vs. A is better than DM vs A in assessing diminishing returns in evergreen species. However, the superiority of FM vs. A over DM vs. A has been less well examined for deciduous species. Here, we applied reduced major axis protocols to test whether FM vs. A is better than DM vs. A to describe the M vs. A scaling relationship, using a total of 4271 leaves from ten deciduous and two evergreen tree species in the Fagaceae and Ulmaceae for comparison. The significance of the difference between the scaling exponents of FM vs. A and DM vs. A was tested using the bootstrap percentile method. Further, we tested the non-linearity of the FM (DM) vs. A data on a log-log scale using ordinary least squares. We found that (i) the majority of scaling exponents of FM vs. A and DM vs. A were >1 thereby confirming diminishing returns for all 12 species, (ii) FM vs. A was more robust than DM vs. A to identify the M vs. A scaling relationship, (iii) the non-linearity of the allometric model was significant for both DM vs. A and FM vs. A., and (iv) the evergreen species of Fagaceae had significantly higher DM and FM per unit area than other deciduous species. In summary, FM vs. A is a more reliable measure than DM vs. A when dealing with diminishing returns, and deciduous species tend to invest less biomass in unit leaf light harvesting area than evergreen species.
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Affiliation(s)
- Xuchen Guo
- Bamboo Research Institution, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Karl J. Niklas
- School of Integrative Plant Science, Cornell University, Ithaca, NY, United States
| | - Yirong Li
- College of Life Science, South China Agricultural University, Guangzhou, China
| | - Jianhui Xue
- Bamboo Research Institution, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
- Institute of Botany, Jiangsu Province and Chinese Academy Sciences, Nanjing, China
| | - Peijian Shi
- Bamboo Research Institution, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Julian Schrader
- School of Natural Sciences, Macquarie University, Sydney, NSW, Australia
- Biodiversity, Macroecology and Biogeography, University of Göttingen, Göttingen, Germany
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9
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Christie K, Pierson NR, Lowry DB, Holeski LM. Local adaptation of seed and seedling traits along a natural aridity gradient may both predict and constrain adaptive responses to climate change. AMERICAN JOURNAL OF BOTANY 2022; 109:1529-1544. [PMID: 36129014 PMCID: PMC9828382 DOI: 10.1002/ajb2.16070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
PREMISE Variation in seed and seedling traits underlies how plants interact with their environment during establishment, a crucial life history stage. We quantified genetic-based variation in seed and seedling traits in populations of the annual plant Plantago patagonica across a natural aridity gradient, leveraging natural intraspecific variation to predict how populations might evolve in response to increasing aridity associated with climate change in the Southwestern U.S. METHODS We quantified seed size, seed size variation, germination timing, and specific leaf area in a greenhouse common garden, and related these traits to the climates of source populations. We then conducted a terminal drought experiment to determine which traits were most predictive of survival under early-season drought. RESULTS All traits showed evidence of clinal variation-seed size decreased, germination timing accelerated, and specific leaf area increased with increasing aridity. Populations with more variable historical precipitation regimes showed greater variation in seed size, suggestive of past selection shaping a diversified bet-hedging strategy mediated by seed size. Seedling height, achieved via larger seeds or earlier germination, was a significant predictor of survival under drought. CONCLUSIONS We documented substantial interspecific trait variation as well as clinal variation in several important seed and seedling traits, yet these slopes were often opposite to predictions for how individual traits might confer drought tolerance. This work shows that plant populations may adapt to increasing aridity via correlated trait responses associated with alternative life history strategies, but that trade-offs might constrain adaptive responses in individual traits.
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Affiliation(s)
- Kyle Christie
- Department of Biological SciencesNorthern Arizona UniversityFlagstaff, Arizona86011USA
- Department of Plant BiologyMichigan State UniversityEast Lansing, Michigan48824USA
| | - Natalie R. Pierson
- Department of Biological SciencesNorthern Arizona UniversityFlagstaff, Arizona86011USA
| | - David B. Lowry
- Department of Plant BiologyMichigan State UniversityEast Lansing, Michigan48824USA
| | - Liza M. Holeski
- Department of Biological SciencesNorthern Arizona UniversityFlagstaff, Arizona86011USA
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10
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Perea AJ, Wiegand T, Garrido JL, Rey PJ, Alcántara JM. Spatial phylogenetic and phenotypic patterns reveal ontogenetic shifts in ecological processes of plant community assembly. OIKOS 2022. [DOI: 10.1111/oik.09260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Antonio J. Perea
- Depto Biología Animal, Biología Vegetal y Ecología, Univ. de Jaén Jaen Spain
- Depto Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas (EEZ‐CSIC) Granada Spain
| | - Thorsten Wiegand
- Dept of Ecological Modelling, Helmholtz Centre for Environmental Research (UFZ) Leipzig Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Leipzig Germany
| | - José L. Garrido
- Depto Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas (EEZ‐CSIC) Granada Spain
- Depto Ecología Evolutiva, Estación Biológica de Doñana, Consejo Superior de Investigaciones Científicas (EBD‐CSIC) Sevilla Spain
| | - Pedro J. Rey
- Depto Biología Animal, Biología Vegetal y Ecología, Univ. de Jaén Jaen Spain
- Inst. Interuniversitario de Investigación del Sistema Tierra En Andalucía (IISTA) Granada Spain
| | - Julio M. Alcántara
- Depto Biología Animal, Biología Vegetal y Ecología, Univ. de Jaén Jaen Spain
- Inst. Interuniversitario de Investigación del Sistema Tierra En Andalucía (IISTA) Granada Spain
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Wang Y, Zhang L, Chen J, Feng L, Li F, Yu L. Study on the relationship between functional characteristics and environmental factors in karst plant communities. Ecol Evol 2022; 12:e9335. [PMID: 36188516 PMCID: PMC9486817 DOI: 10.1002/ece3.9335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 08/11/2022] [Accepted: 09/02/2022] [Indexed: 11/09/2022] Open
Affiliation(s)
- Yang Wang
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro‐bioengineering Guizhou University Guiyang China
| | - Limin Zhang
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro‐bioengineering Guizhou University Guiyang China
- Institute of Mountain Resources of Guizhou Academy of Sciences Guiyang China
| | - Jin Chen
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro‐bioengineering Guizhou University Guiyang China
| | - Ling Feng
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro‐bioengineering Guizhou University Guiyang China
| | - Fangbing Li
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro‐bioengineering Guizhou University Guiyang China
| | - Lifei Yu
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro‐bioengineering Guizhou University Guiyang China
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12
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Gobbi M, Corlatti L, Caccianiga M, ter Braak CJF, Pedrotti L. Hay meadows' overriding effect shapes ground beetle functional diversity in mountainous landscapes. Ecosphere 2022. [DOI: 10.1002/ecs2.4193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Affiliation(s)
- Mauro Gobbi
- Research and Museum Collections Office, Climate and Ecology Unit, MUSE—Museo delle Scienze Trento Italy
| | - Luca Corlatti
- Stelvio National Park Bormio Italy
- Chair of Wildlife Ecology and Management University of Freiburg Freiburg Germany
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13
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Maenpuen P, Katabuchi M, Onoda Y, Zhou C, Zhang JL, Chen YJ. Sources and consequences of mismatch between leaf disc and whole-leaf leaf mass per area (LMA). AMERICAN JOURNAL OF BOTANY 2022; 109:1242-1250. [PMID: 35862826 DOI: 10.1002/ajb2.16038] [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: 12/20/2021] [Revised: 12/20/2021] [Accepted: 06/26/2022] [Indexed: 06/15/2023]
Abstract
PREMISE Leaf mass per area (LMA), which is an important functional trait in leaf economic spectrum and plant growth analysis, is measured from leaf discs or whole leaves. Differences between the measurement methods may lead to large differences in the estimates of LMA values. METHODS We examined to what extent estimates of LMA based on whole leaves match those based on discs using 334 woody species from a wide range of biomes (tropics, subtropics, savanna, and temperate), whether the relationship varied by leaf morphology (tissue density, leaf area, leaf thickness), punch size (0.6- and 1.0-cm diameter), and whether the extent of intraspecifc variation for each species matches. RESULTS Disc-based estimates of species mean LMA matched the whole-leaf estimates well, and whole-leaf LMA tended to be 9.69% higher than leaf-disc LMA. The ratio of whole-leaf LMA to leaf-disc LMA was higher for species with higher leaf tissue density and larger leaves, and variance in the ratio was greater for species with lower leaf tissue density and thinner leaves. Estimates based on small leaf discs also inflated the ratio. The extent of the intraspecific variation only weakly matched between whole-leaf and disc-based estimates (R2 = 0.08). CONCLUSIONS Our results suggest that simple conversion between whole-leaf and leaf-disc LMA is difficult for species obtained with a small leaf punch, but it should be possible for species obtained with a large+ leaf punch. Accurately representing leaf traits will likely require careful selection between leaf-disc and whole-leaf traits depending on the objectives. Quantifying intraspecific variation using leaf discs should be also considered with caution.
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Affiliation(s)
- Phisamai Maenpuen
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Center of Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Yunnan, 666303, China
| | - Masatoshi Katabuchi
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China
| | - Yusuke Onoda
- Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
| | - Cong Zhou
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jiao-Lin Zhang
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China
- Center of Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Yunnan, 666303, China
| | - Ya-Jun Chen
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China
- Center of Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Yunnan, 666303, China
- Savanna Ecosystem Research Station, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Yuanjiang, Yunnan, 6663300, China
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14
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Blasini DE, Koepke DF, Bush SE, Allan GJ, Gehring CA, Whitham TG, Day TA, Hultine KR. Tradeoffs between leaf cooling and hydraulic safety in a dominant arid land riparian tree species. PLANT, CELL & ENVIRONMENT 2022; 45:1664-1681. [PMID: 35147232 DOI: 10.1111/pce.14292] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
Leaf carbon gain optimization in hot environments requires balancing leaf thermoregulation with avoiding excessive water loss via transpiration and hydraulic failure. The tradeoffs between leaf thermoregulation and transpirational water loss can determine the ecological consequences of heat waves that are increasing in frequency and intensity. We evaluated leaf thermoregulation strategies in warm- (>40°C maximum summer temperature) and cool-adapted (<40°C maximum summer temperature) genotypes of the foundation tree species, Populus fremontii, using a common garden near the mid-elevational point of its distribution. We measured leaf temperatures and assessed three modes of leaf thermoregulation: leaf morphology, midday canopy stomatal conductance and stomatal sensitivity to vapour pressure deficit. Data were used to parameterize a leaf energy balance model to estimate contrasts in midday leaf temperature in warm- and cool-adapted genotypes. Warm-adapted genotypes had 39% smaller leaves and 38% higher midday stomatal conductance, reflecting a 3.8°C cooler mean leaf temperature than cool-adapted genotypes. Leaf temperatures modelled over the warmest months were on average 1.1°C cooler in warm- relative to cool-adapted genotypes. Results show that plants adapted to warm environments are predisposed to tightly regulate leaf temperatures during heat waves, potentially at an increased risk of hydraulic failure.
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Affiliation(s)
- Davis E Blasini
- School of Life Sciences, Arizona State University, Tempe, Arizona, USA
| | - Dan F Koepke
- Department of Research, Conservation and Collections, Desert Botanical Garden, Phoenix, Arizona, USA
| | - Susan E Bush
- Department of Research, Conservation and Collections, Desert Botanical Garden, Phoenix, Arizona, USA
| | - Gerard J Allan
- Center for Adaptable Western Landscapes, Northern Arizona University, Flagstaff, Arizona, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, Arizona, USA
| | - Catherine A Gehring
- Center for Adaptable Western Landscapes, Northern Arizona University, Flagstaff, Arizona, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, Arizona, USA
| | - Thomas G Whitham
- Center for Adaptable Western Landscapes, Northern Arizona University, Flagstaff, Arizona, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, Arizona, USA
| | - Thomas A Day
- School of Life Sciences, Arizona State University, Tempe, Arizona, USA
| | - Kevin R Hultine
- Department of Research, Conservation and Collections, Desert Botanical Garden, Phoenix, Arizona, USA
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15
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Wang J, Ouyang F, An S, Wang L, Xu N, Ma J, Wang J, Zhang H, Kong L. Variation, coordination, and trade-offs between needle structures and photosynthetic-related traits across five Picea species: consequences on plant growth. BMC PLANT BIOLOGY 2022; 22:242. [PMID: 35581540 PMCID: PMC9112436 DOI: 10.1186/s12870-022-03593-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 04/06/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Picea species are distributed and planted world-wide due to their great ecological and economic values. It has been reported that Picea species vary widely in growth traits in a given environment, which reflects genetic and phenotypic differences among species. However, key physiological processes underlying tree growth and the influencing factors on them are still unknown. RESULTS Here, we examined needle structures, needle chemical components, physiological characteristics and growth traits across five Picea species in a common garden in Tianshui, Gansu province in China: Picea glauca, P. mariana, P. likiangensis, P. koraiensis, and P. crassifolia, among which P. glauca and P. mariana were introduced from North America, P. likiangensis was from Lijiang, Yunan province in China, P. koraiensis was from Yichun, Heilongjiang province in China, and P. crassifolia was native to the experimental site. It was found that nearly all traits varied significantly among species. Tissue-level anatomical characteristics and leaf mass per area (LMA) were affected by needle size, but the variations of them were not associated with the variations in photosynthetic and biochemical capacity among species. Variations in area-based maximum photosynthesis (Pnmax) were affected by stomatal conductance (gs), mesophyll conductance (gm) and biochemical parameters including maximum carboxylation rate (Vcmax), and maximum electron transport rate (Jmax). The fraction of N allocated to different photosynthetic apparatus displayed contrasting values among species, which contributed to the species variations in photosynthetic nitrogen use efficiency (PNUE) and Pnmax. Additionally, all growth traits were positively correlated with Pnmax and PNUE. CONCLUSION Needle structures are less important than needle biochemical parameters in determining the variations in photosynthetic capacity across the five Picea species. Pnmax and PNUE are closedly associated with the fraction of N allocated to photosynthetic apparatus (Pphoto) compared with leaf N content per area (Narea). The tremendous growth differences among the five Picea species were substantially related to the interspecies variation in Pnmax and PNUE.
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Affiliation(s)
- Junchen Wang
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, People's Republic of China
| | - Fangqun Ouyang
- Beijing Floriculture Engineering Technology Research Centre, Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Botanical Garden, Beijing, 100093, China.
| | - Sanping An
- Research Institute of Forestry of Xiaolong Mountain, Gansu Provincial Key Laboratory of Secondary Forest Cultivation, Tianshui, 741022, People's Republic of China
| | - Lifang Wang
- Research Institute of Forestry of Xiaolong Mountain, Gansu Provincial Key Laboratory of Secondary Forest Cultivation, Tianshui, 741022, People's Republic of China
| | - Na Xu
- Research Institute of Forestry of Xiaolong Mountain, Gansu Provincial Key Laboratory of Secondary Forest Cultivation, Tianshui, 741022, People's Republic of China
| | - Jianwei Ma
- Research Institute of Forestry of Xiaolong Mountain, Gansu Provincial Key Laboratory of Secondary Forest Cultivation, Tianshui, 741022, People's Republic of China
| | - Junhui Wang
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, People's Republic of China.
| | - Hanguo Zhang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, 150040, People's Republic of China
| | - Lisheng Kong
- Department of Biology, Centre for Forest Biology, University of Victoria, Victoria, BC, V8W 2Y2, Canada
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Spitzer CM, Sundqvist MK, Wardle DA, Gundale MJ, Kardol P. Root trait variation along a sub‐arctic tundra elevational gradient. OIKOS 2022. [DOI: 10.1111/oik.08903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Clydecia M. Spitzer
- Dept of Forest Ecology and Management, Swedish Univ. of Agricultural Sciences Umeå Sweden
| | - Maja K. Sundqvist
- Dept of Forest Ecology and Management, Swedish Univ. of Agricultural Sciences Umeå Sweden
| | - David A. Wardle
- Asian School of the Environment, Nanyang Technological Univ. Singapore Singapore
| | - Michael J. Gundale
- Dept of Forest Ecology and Management, Swedish Univ. of Agricultural Sciences Umeå Sweden
| | - Paul Kardol
- Dept of Forest Ecology and Management, Swedish Univ. of Agricultural Sciences Umeå Sweden
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17
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Ye Y, Kitayama K, Onoda Y. A cost-benefit analysis of leaf carbon economy with consideration of seasonal changes in leaf traits for sympatric deciduous and evergreen congeners: implications for their coexistence. THE NEW PHYTOLOGIST 2022; 234:1047-1058. [PMID: 35133649 DOI: 10.1111/nph.18022] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 01/29/2022] [Indexed: 06/14/2023]
Abstract
Deciduous and evergreen species, which have evolved repeatedly across different clades, can coexist in a given environment despite substantial differences in their leaf traits. It remains unclear how these two groups differ in the development of leaf traits over their lifespans or how their carbon economy - the balance between lifetime carbon gain and leaf construction cost - is determined. We determined the photosynthetic rate (Aarea ), leaf mass per area (LMA), leaf mechanical strength and leaf water potentials and estimated the lifetime carbon gain and leaf construction cost of five closely related pairs of evergreen and deciduous species co-occurring in a temperate forest. Aarea of evergreen species was lower during their first spring, similar in summer and higher than the autumn until the following spring than their deciduous counterparts. Leaf mechanical strength, osmotic pressures and LMA increased continuously towards winter in evergreen species while remaining largely constant in deciduous species. The ratio of lifetime carbon gain to leaf construction cost was similar between the two groups. The additional cost associated with enduring winter is paid back by a longer revenue of photosynthesis in evergreen species, allowing evergreen and deciduous leaf habits to coexist in the seasonal environment.
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Affiliation(s)
- Yunhan Ye
- Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
| | - Kanehiro Kitayama
- Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
| | - Yusuke Onoda
- Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
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18
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The Role of Plant Functional Diversity in Regulating Soil Organic Carbon Stocks under Different Grazing Intensities in Temperate Grassland, China. SUSTAINABILITY 2022. [DOI: 10.3390/su14084376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Grazing is very common in the grassland ecosystem, and it has a significant impact on the C stocks and cycle. One of the most important drivers of soil C stocks is functional diversity. However, limited studies have attempted to explore the effects of functional diversity on soil C stocks associated with grazing disturbance. This study was carried out in Hulunbeier grassland, Inner Mongolia, and four grazing intensities (no grazing (NG), light grazing (LG), moderate grazing (MG), and heavy grazing (HG)) were identified. The plant functional traits and important soil properties under different grazing intensities were measured. Functional identity and diversity were calculated based on the measured functional traits. The impacts of functional identity and diversity on soil organic carbon stocks (SOCstocks) were analyzed using a multi-model inference (MMI) approach. Our study showed that the functional diversity effect on soil C stocks varies depending on grazing intensity. We identified that functional richness has a significant impact on SOCstocks in NG. The community weighted mean of leaf area became the best predictor of SOCstocks in LG. As grazing intensified, functional divergence best explained SOCstocks in moderate and heavy grazing sites, and their relationship was positive. The major outcomes of this research could shed light on the mechanics of soil carbon storage.
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19
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Yan JM, Li YG, Maisupova B, Zhou XB, Zhang J, Liu HL, Yin BF, Zang YX, Tao Y, Zhang YM. Effects of growth decline on twig functional traits of wild apple trees in two long-term monitoring plots in Yili Valley: Implication for their conservation. Glob Ecol Conserv 2022. [DOI: 10.1016/j.gecco.2021.e01998] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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20
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Poorter L, Rozendaal DMA, Bongers F, Almeida DJS, Álvarez FS, Andrade JL, Arreola Villa LF, Becknell JM, Bhaskar R, Boukili V, Brancalion PHS, César RG, Chave J, Chazdon RL, Dalla Colletta G, Craven D, de Jong BHJ, Denslow JS, Dent DH, DeWalt SJ, Díaz García E, Dupuy JM, Durán SM, Espírito Santo MM, Fernandes GW, Finegan B, Granda Moser V, Hall JS, Hernández-Stefanoni JL, Jakovac CC, Kennard D, Lebrija-Trejos E, Letcher SG, Lohbeck M, Lopez OR, Marín-Spiotta E, Martínez-Ramos M, Meave JA, Mora F, de Souza Moreno V, Müller SC, Muñoz R, Muscarella R, Nunes YRF, Ochoa-Gaona S, Oliveira RS, Paz H, Sanchez-Azofeifa A, Sanaphre-Villanueva L, Toledo M, Uriarte M, Utrera LP, van Breugel M, van der Sande MT, Veloso MDM, Wright SJ, Zanini KJ, Zimmerman JK, Westoby M. Functional recovery of secondary tropical forests. Proc Natl Acad Sci U S A 2021; 118:e2003405118. [PMID: 34845017 PMCID: PMC8670493 DOI: 10.1073/pnas.2003405118] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/15/2021] [Indexed: 11/18/2022] Open
Abstract
One-third of all Neotropical forests are secondary forests that regrow naturally after agricultural use through secondary succession. We need to understand better how and why succession varies across environmental gradients and broad geographic scales. Here, we analyze functional recovery using community data on seven plant characteristics (traits) of 1,016 forest plots from 30 chronosequence sites across the Neotropics. By analyzing communities in terms of their traits, we enhance understanding of the mechanisms of succession, assess ecosystem recovery, and use these insights to propose successful forest restoration strategies. Wet and dry forests diverged markedly for several traits that increase growth rate in wet forests but come at the expense of reduced drought tolerance, delay, or avoidance, which is important in seasonally dry forests. Dry and wet forests showed different successional pathways for several traits. In dry forests, species turnover is driven by drought tolerance traits that are important early in succession and in wet forests by shade tolerance traits that are important later in succession. In both forests, deciduous and compound-leaved trees decreased with forest age, probably because microclimatic conditions became less hot and dry. Our results suggest that climatic water availability drives functional recovery by influencing the start and trajectory of succession, resulting in a convergence of community trait values with forest age when vegetation cover builds up. Within plots, the range in functional trait values increased with age. Based on the observed successional trait changes, we indicate the consequences for carbon and nutrient cycling and propose an ecologically sound strategy to improve forest restoration success.
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Affiliation(s)
- Lourens Poorter
- Forest Ecology and Forest Management Group, Wageningen University & Research, Wageningen 6700 AA, The Netherlands;
| | - Danaë M A Rozendaal
- Forest Ecology and Forest Management Group, Wageningen University & Research, Wageningen 6700 AA, The Netherlands
- Plant Production Systems Group, Wageningen University & Research, Wageningen 6700 AK, The Netherlands
- Centre for Crop Systems Analysis, Wageningen University & Research, Wageningen 6700 AK, The Netherlands
| | - Frans Bongers
- Forest Ecology and Forest Management Group, Wageningen University & Research, Wageningen 6700 AA, The Netherlands
| | - de Jarcilene S Almeida
- Departamento de Botânica, Centro de Ciências Biológicas, Universidade Federal de Pernambuco, Recife 50670-901, Brazil
| | - Francisco S Álvarez
- Forests, Biodiversity and Climate Change Programme, Centro Agronómico Tropical de Investigación y Enseñanza, 30501 Turrialba, Costa Rica
| | - José Luís Andrade
- Centro de Investigación Científica de Yucatán A.C., Unidad de Recursos Naturales 97205 Mérida, México
| | - Luis Felipe Arreola Villa
- Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México 58089 Morelia, México
| | | | - Radika Bhaskar
- Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México 58089 Morelia, México
- College of Design, Engineering, and Commerce, Philadelphia University, Philadelphia, PA 19144
| | | | - Pedro H S Brancalion
- Department of Forest Sciences, "Luiz de Queiroz" College of Agriculture, University of São Paulo, Piracicaba 13418-900, Brazil
| | - Ricardo G César
- Department of Forest Sciences, "Luiz de Queiroz" College of Agriculture, University of São Paulo, Piracicaba 13418-900, Brazil
| | - Jerome Chave
- Laboratoire Evolution et Diversité Biologique, Centre National de la Recherche Scientifique, Université Paul Sabatier, Toulouse F-31062, France
| | - Robin L Chazdon
- Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT 06269
- Tropical Forests and People Research Centre, University of the Sunshine Coast, Sippy Downs QLD 4556, Australia
- International Institute for Sustainability, Rio de Janeiro 22460-320, Brazil
| | - Gabriel Dalla Colletta
- Institute of Biology, University of Campinas, Cidade Universitária Zeferino Vaz, Campinas 13083-970, Brazil
| | - Dylan Craven
- Centro de Modelacion y Monitoreo, Facultad de Ciencias, Universidad Mayor, Santiago, Chile
| | - Ben H J de Jong
- Department of Sustainability Science, El Colegio de la Frontera Sur 24500 Campeche, Mexico
| | - Julie S Denslow
- Department of Ecology and Evolutionary Biology, Tulane University, New Orleans, LA 70118
| | - Daisy H Dent
- Smithsonian Tropical Research Institute, Ancon 0843-03092, Panamá
- Biological and Environmental Sciences, University of Stirling, Stirling FK9 4LA, United Kingdom
| | - Saara J DeWalt
- Department of Biological Sciences, Clemson University, Clemson, SC 29634
| | - Elisa Díaz García
- Department of Forest Sciences, "Luiz de Queiroz" College of Agriculture, University of São Paulo, Piracicaba 13418-900, Brazil
| | - Juan Manuel Dupuy
- Centro de Investigación Científica de Yucatán A.C., Unidad de Recursos Naturales 97205 Mérida, México
| | - Sandra M Durán
- Department of Ecology, Evolution and Behavior, University of Minnesota, St. Paul, MN 55104
| | - Mário M Espírito Santo
- Departamento de Biologia Geral, Universidade Estadual de Montes Claros, Montes Claros 39401-089, Brazil
| | | | - Bryan Finegan
- Forests, Biodiversity and Climate Change Programme, Centro Agronómico Tropical de Investigación y Enseñanza, 30501 Turrialba, Costa Rica
| | - Vanessa Granda Moser
- Forests, Biodiversity and Climate Change Programme, Centro Agronómico Tropical de Investigación y Enseñanza, 30501 Turrialba, Costa Rica
| | - Jefferson S Hall
- Smithsonian Institute Forest Global Earth Observatory, Smithsonian Tropical Research Institute, Ancon 0843-03092, Panamá
| | | | - Catarina C Jakovac
- Forest Ecology and Forest Management Group, Wageningen University & Research, Wageningen 6700 AA, The Netherlands
- Departamento de Fitotecnia, Universidade Federal de Santa Catarina, Florianópolis 88034-000, Brazil
| | - Deborah Kennard
- Department of Physical and Environmental Sciences, Colorado Mesa University, Grand Junction, CO 81501
| | - Edwin Lebrija-Trejos
- Department of Biology and Environment, Faculty of Natural Sciences, University of Haifa, Tivon 36006, Israel
| | | | - Madelon Lohbeck
- Forest Ecology and Forest Management Group, Wageningen University & Research, Wageningen 6700 AA, The Netherlands
- World Agroforestry, Nairobi 00100, Kenya
| | - Omar R Lopez
- Smithsonian Tropical Research Institute, Ancon 0843-03092, Panamá
- Instituto de Investigaciones Científicas y Servicios de Alta Tecnología, Panama City 0843-01103, Panamá
| | | | - Miguel Martínez-Ramos
- Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México 58089 Morelia, México
| | - Jorge A Meave
- Departamento de Ecología y Recursos Naturales, Facultad de Ciencias, Universidad Nacional Autónoma de México 04510 Ciudad de México, Mexico
| | - Francisco Mora
- Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México 58089 Morelia, México
| | - Vanessa de Souza Moreno
- Department of Forest Sciences, "Luiz de Queiroz" College of Agriculture, University of São Paulo, Piracicaba 13418-900, Brazil
| | - Sandra C Müller
- Departamento de Ecologia, Universidade Federal do Rio Grande do Sul, Porto Alegre 91540-000, Brazil
| | - Rodrigo Muñoz
- Forest Ecology and Forest Management Group, Wageningen University & Research, Wageningen 6700 AA, The Netherlands
- Departamento de Ecología y Recursos Naturales, Facultad de Ciencias, Universidad Nacional Autónoma de México 04510 Ciudad de México, Mexico
| | - Robert Muscarella
- Department of Plant Ecology and Evolution, Uppsala University SE-752 36 Uppsala, Sweden
| | - Yule R F Nunes
- Departamento de Biologia Geral, Universidade Estadual de Montes Claros, Montes Claros 39401-089, Brazil
| | - Susana Ochoa-Gaona
- Department of Sustainability Science, El Colegio de la Frontera Sur 24500 Campeche, Mexico
| | - Rafael S Oliveira
- Department of Plant Biology, Instituto de Biologia, University of Campinas, Campinas 13083-970, Brazil
| | - Horacio Paz
- Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México 58089 Morelia, México
| | - Arturo Sanchez-Azofeifa
- Earth and Atmospheric Sciences Department, University of Alberta, Edmonton, AB T6G 2E3, Canada
| | - Lucía Sanaphre-Villanueva
- Centro de Investigación Científica de Yucatán A.C., Unidad de Recursos Naturales 97205 Mérida, México
- Consejo Nacional de Ciencia y Tecnologia, Centro del Cambio Global y la Sustentabilidad A.C. 86080 Villahermosa, Mexico
| | - Marisol Toledo
- Facultad de Ciencias Agrícolas, Universidad Autónoma Gabriel René Moreno, Santa Cruz de la Sierra, Bolivia
| | - Maria Uriarte
- Department of Ecology, Evolution, and Environmental Biology, Columbia University, New York, NY 10027
| | - Luis P Utrera
- Forests, Biodiversity and Climate Change Programme, Centro Agronómico Tropical de Investigación y Enseñanza, 30501 Turrialba, Costa Rica
| | - Michiel van Breugel
- Smithsonian Institute Forest Global Earth Observatory, Smithsonian Tropical Research Institute, Ancon 0843-03092, Panamá
- Yale-NUS College, Singapore 138610
- Department of Biological Sciences, National University of Singapore 117543 Singapore
| | - Masha T van der Sande
- Forest Ecology and Forest Management Group, Wageningen University & Research, Wageningen 6700 AA, The Netherlands
- Institute for Global Ecology, Florida Institute of Technology, Melbourne, FL 32901
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam 1012 WX Amsterdam, The Netherlands
| | - Maria D M Veloso
- Departamento de Biologia Geral, Universidade Estadual de Montes Claros, Montes Claros 39401-089, Brazil
| | - S Joseph Wright
- Smithsonian Tropical Research Institute, Ancon 0843-03092, Panamá
| | - Kátia J Zanini
- Departamento de Ecologia, Universidade Federal do Rio Grande do Sul, Porto Alegre 91540-000, Brazil
| | - Jess K Zimmerman
- Department of Environmental Sciences, University of Puerto Rico, San Juan, Puerto Rico 00936
| | - Mark Westoby
- Department of Biological Sciences, Macquarie University, Sydney, NSW 2109, Australia
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Larios Mendieta KA, Burleigh JG, Putz FE. Pith width, leaf size, and twig thickness. AMERICAN JOURNAL OF BOTANY 2021; 108:2143-2149. [PMID: 34787901 DOI: 10.1002/ajb2.1800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 07/20/2021] [Indexed: 06/13/2023]
Abstract
PREMISE To support large leaves, many woody plant species evolved a cost-effective way to thicken twigs. As an extension of E. J. H. Corner's rule that twig diameter increases with leaf size, we hypothesized that pith width also increases with leaf size. The benefit to the plant from the proposed relationship is that pith is a low-cost tissue that reduces the metabolic cost of large diameter twig production. METHODS Leaf sizes and cross-sectional areas of bark, xylem, and pith of 81 species of trees and shrubs growing in Gainesville, Florida were measured and compared with standardized major axis regressions of pairwise species trait values and phylogenetically independent contrasts. RESULTS Pith area increases with leaf size with or without accounting for phylogenetic relationships. In agreement with Corner's rule, overall twig diameter as well as bark and wood thickness also increase with leaf size. Thicker twigs showed more variation in relative pith, wood, and bark cross-sectional areas compared to thinner twigs. CONCLUSIONS Investments in pith, a tissue of low density found in the centers of twigs, provides a low-cost way to increase twig circumference and thereby space for attachment of large leaves while increasing the overall second moment of area of twigs, which increases their ability to biomechanically support large leaves.
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Affiliation(s)
| | - J Gordon Burleigh
- Department of Biology, University of Florida, Gainesville, FL, 32611, USA
| | - Francis E Putz
- Department of Biology, University of Florida, Gainesville, FL, 32611, USA
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22
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Li Y, Kang X, Zhou J, Zhao Z, Zhang S, Bu H, Qi W. Geographic Variation in the Petiole-Lamina Relationship of 325 Eastern Qinghai-Tibetan Woody Species: Analysis in Three Dimensions. FRONTIERS IN PLANT SCIENCE 2021; 12:748125. [PMID: 34777427 PMCID: PMC8583490 DOI: 10.3389/fpls.2021.748125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 09/27/2021] [Indexed: 06/13/2023]
Abstract
The petiole-lamina relationship is central to the functional tradeoff between photosynthetic efficiency and the support/protection cost. Understanding environmental gradients in the relationship and its underlying mechanisms remains a critical challenge for ecologists. We investigated the possible scaling of the petiole-lamina relationships in three dimensions, i.e., petiole length (PL) vs. lamina length (LL), petiole cross sectional area (PCA) vs. lamina area (LA), and petiole mass (PM) vs. lamina mass (LM), for 325 Qinghai-Tibetan woody species, and examined their relation to leaf form, altitude, climate, and vegetation types. Both crossspecies analysis and meta-analysis showed significantly isometric, negatively allometric, and positively allometric scaling of the petiole-lamina relationships in the length, area, and mass dimensions, respectively, reflecting an equal, slower, and faster variation in the petiole than in the lamina in these trait dimensions. Along altitudinal gradients, the effect size of the petiole-lamina relationship decreased in the length and mass dimensions but increased in the area dimension, suggesting the importance of enhancing leaf light-interception and nutrient transport efficiency in the warm zones in petiole development, but enhancing leaf support/protection in the cold zones. The significant additional influences of LA, LM, and LA were observed on the PL-LL, PCA-LA, and PM-LM relationships, respectively, implying that the single-dimension petiole trait is affected simultaneously by multidimensional lamina traits. Relative to simple-leaved species, the presence of petiolule in compound-leaved species can increase both leaf light interception and static gravity loads or dynamic drag forces on the petiole, leading to lower dependence of PL variation on LL variation, but higher biomass allocation to the petiole. Our study highlights the need for multidimension analyses of the petiole-lamina relationships and illustrates the importance of plant functional tradeoffs and the change in the tradeoffs along environmental gradients in determining the relationships.
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Affiliation(s)
| | | | | | | | | | | | - Wei Qi
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, China
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23
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Feng JQ, Zhang FP, Huang JL, Hu H, Zhang SB. Allometry Between Vegetative and Reproductive Traits in Orchids. FRONTIERS IN PLANT SCIENCE 2021; 12:728843. [PMID: 34721458 PMCID: PMC8548613 DOI: 10.3389/fpls.2021.728843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
In flowering plants, inflorescence characteristics influence both seed set and pollen contribution, while inflorescence and peduncle size can be correlated with biomass allocation to reproductive organs. Peduncles also play a role in water and nutrient supply of flowers, and mechanical support. However, it is currently unclear whether inflorescence size is correlated with peduncle size. Here, we tested whether orchids with large diameter peduncles bear more and larger flowers than those with smaller peduncles by analyzing 10 traits of inflorescence, flower, and leaf in 26 species. Peduncle diameters were positively correlated with inflorescence length and total floral area, indicating that species with larger peduncles tended to have larger inflorescences and larger flowers. We also found strongly positive correlation between inflorescence length and leaf area, and between total floral area and total leaf area, which suggested that reproductive organs may be allometrically coordinated with vegetative organs. However, neither flower number nor floral dry mass per unit area were correlated with leaf number or leaf dry mass per unit area, implying that the function between leaf and flower was uncoupled. Our findings provided a new insight for understanding the evolution of orchids, and for horticulturalists interested in improving floral and inflorescence traits in orchids.
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Affiliation(s)
- Jing-Qiu Feng
- Key Laboratory of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Feng-Ping Zhang
- Yunnan Key Laboratory of Dai and Yi Medicines, College of Traditional Chinese Medicine, Yunnan University of Chinese Medicine, Kunming, China
| | | | - Hong Hu
- Key Laboratory of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Shi-Bao Zhang
- Key Laboratory of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
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24
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Schrader J, Shi P, Royer DL, Peppe DJ, Gallagher RV, Li Y, Wang R, Wright IJ. Leaf size estimation based on leaf length, width and shape. ANNALS OF BOTANY 2021; 128:395-406. [PMID: 34157097 PMCID: PMC8414912 DOI: 10.1093/aob/mcab078] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 06/18/2021] [Indexed: 05/21/2023]
Abstract
BACKGROUND AND AIMS Leaf size has considerable ecological relevance, making it desirable to obtain leaf size estimations for as many species worldwide as possible. Current global databases, such as TRY, contain leaf size data for ~30 000 species, which is only ~8% of known species worldwide. Yet, taxonomic descriptions exist for the large majority of the remainder. Here we propose a simple method to exploit information on leaf length, width and shape from species descriptions to robustly estimate leaf areas, thus closing this considerable knowledge gap for this important plant functional trait. METHODS Using a global dataset of all major leaf shapes measured on 3125 leaves from 780 taxa, we quantified scaling functions that estimate leaf size as a product of leaf length, width and a leaf shape-specific correction factor. We validated our method by comparing leaf size estimates with those obtained from image recognition software and compared our approach with the widely used correction factor of 2/3. KEY RESULTS Correction factors ranged from 0.39 for highly dissected, lobed leaves to 0.79 for oblate leaves. Leaf size estimation using leaf shape-specific correction factors was more accurate and precise than estimates obtained from the correction factor of 2/3. CONCLUSION Our method presents a tractable solution to accurately estimate leaf size when only information on leaf length, width and shape is available or when labour and time constraints prevent usage of image recognition software. We see promise in applying our method to data from species descriptions (including from fossils), databases, field work and on herbarium vouchers, especially when non-destructive in situ measurements are needed.
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Affiliation(s)
- Julian Schrader
- Department of Biological Sciences, Macquarie University, NSW 2109, Australia
- Department of Biodiversity, Macroecology and Biogeography, University of Goettingen, Goettingen, Germany
| | - Peijian Shi
- Bamboo Research Institute, Nanjing Forestry University, Nanjing 210037, P.R. China
| | - Dana L Royer
- Department of Earth and Environmental Sciences, Wesleyan University, Middletown, CT 06459, USA
| | - Daniel J Peppe
- Terrestrial Paleoclimatology Research Group, Department of Geosciences, Baylor University, Waco, TX 76706, USA
| | - Rachael V Gallagher
- Department of Biological Sciences, Macquarie University, NSW 2109, Australia
| | - Yirong Li
- Bamboo Research Institute, Nanjing Forestry University, Nanjing 210037, P.R. China
| | - Rong Wang
- Bamboo Research Institute, Nanjing Forestry University, Nanjing 210037, P.R. China
| | - Ian J Wright
- Department of Biological Sciences, Macquarie University, NSW 2109, Australia
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25
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Yang F, Xie L, Huang Q, Cao H, Wang J, Wang J, Liu Y, Ni H, Mu L. Twig biomass allocation of Betula platyphylla in different habitats in Wudalianchi Volcano, northeast China. Open Life Sci 2021; 16:758-765. [PMID: 34435132 PMCID: PMC8354375 DOI: 10.1515/biol-2021-0078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 06/28/2021] [Accepted: 07/05/2021] [Indexed: 11/26/2022] Open
Abstract
Understanding the response of biomass allocation in current-year twigs is crucial for elucidating the plant life-history strategies under heterogeneous volcanic habitats. We aimed to test whether twig biomass allocation, within-leaf biomass allocation, and the size-number trade-off of Betula platyphylla would be influenced. We measured twig traits of B. platyphylla in Wudalianchi volcanic kipuka, the lava platform, and Shankou lake in northeastern China using standardized major axis analyses. The results showed that the leaf number, total lamina mass (TLAM), stem mass (SM), and twig mass (TM) were significantly different between the three habitats and were greatest in kipuka with abundant soil nutrients. TLAM and SM scaled allometrically with respect to TM, while the normalization constants of the lava platform differ significantly between kipuka and Shankou lake, which showed that under certain TM, leaves gain more biomass in the lava platform. However, within the leaf, individual lamina mass (ILM) scaled isometrically with respect to individual petiole mass (IPM) in kipuka and the lava platform, but ILM scaled allometrically to IPM in Shankou lake. Our results indicated that inhabitats influenced the twig traits and biomass allocation and within-leaf biomass allocation are strategies for plants to adapt to volcanic heterogeneous habitats.
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Affiliation(s)
- Fan Yang
- Forest Plant of Resources, College of Forestry, Northeast Forestry University, No. 26, Hexing Road, Xiangfang District, Harbin, 150040, China.,Ecological Environment Center, Institute of Natural Resources and Ecology, Heilongjiang Academy of Sciences/National and Provincial Joint Engineering Laboratory of Wetlands and Ecological Conservation, No. 103, Haping Road, Xiangfang District, Harbin, 150040, China
| | - Lihong Xie
- Ecological Environment Center, Institute of Natural Resources and Ecology, Heilongjiang Academy of Sciences/National and Provincial Joint Engineering Laboratory of Wetlands and Ecological Conservation, No. 103, Haping Road, Xiangfang District, Harbin, 150040, China
| | - Qingyang Huang
- Ecological Environment Center, Institute of Natural Resources and Ecology, Heilongjiang Academy of Sciences/National and Provincial Joint Engineering Laboratory of Wetlands and Ecological Conservation, No. 103, Haping Road, Xiangfang District, Harbin, 150040, China
| | - Hongjie Cao
- Ecological Environment Center, Institute of Natural Resources and Ecology, Heilongjiang Academy of Sciences/National and Provincial Joint Engineering Laboratory of Wetlands and Ecological Conservation, No. 103, Haping Road, Xiangfang District, Harbin, 150040, China
| | - Jifeng Wang
- Ecological Environment Center, Institute of Natural Resources and Ecology, Heilongjiang Academy of Sciences/National and Provincial Joint Engineering Laboratory of Wetlands and Ecological Conservation, No. 103, Haping Road, Xiangfang District, Harbin, 150040, China
| | - Jianbo Wang
- Ecological Environment Center, Institute of Natural Resources and Ecology, Heilongjiang Academy of Sciences/National and Provincial Joint Engineering Laboratory of Wetlands and Ecological Conservation, No. 103, Haping Road, Xiangfang District, Harbin, 150040, China
| | - Yingnan Liu
- Ecological Environment Center, Institute of Natural Resources and Ecology, Heilongjiang Academy of Sciences/National and Provincial Joint Engineering Laboratory of Wetlands and Ecological Conservation, No. 103, Haping Road, Xiangfang District, Harbin, 150040, China
| | - Hongwei Ni
- College of Forestry, Heilongjiang Academy of Forestry, No. 134, Haping Road, Xiangfang District, Harbin, 150040, China
| | - Liqiang Mu
- Forest Plant of Resources, College of Forestry, Northeast Forestry University, No. 26, Hexing Road, Xiangfang District, Harbin, 150040, China
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26
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Wang H, Liu PL, Li J, Yang H, Li Q, Chang ZY. Why More Leaflets? The Role of Natural Selection in Shaping the Spatial Pattern of Leaf-Shape Variation in Oxytropis diversifolia (Fabaceae) and Two Close Relatives. FRONTIERS IN PLANT SCIENCE 2021; 12:681962. [PMID: 34489992 PMCID: PMC8416669 DOI: 10.3389/fpls.2021.681962] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 07/19/2021] [Indexed: 06/13/2023]
Abstract
Leaf shape exhibits tremendous diversity in angiosperms. It has long been argued that leaf shape can affect major physiological and ecological properties of plants and thus is likely to be adaptive, but the evolutionary evidence is still scarce. Oxytropis diversifolia (Fabaceae) is polymorphic for leaf shape (1 leaflet, 1-3 leaflets, and 3 leaflets) and exhibits clinal variation in steppes of Nei Mongol, China. With two close relatives predominantly fixed for one phenotype as comparison (Oxytropis neimonggolica with 1 leaflet and Oxytropis leptophylla with 5-13 leaflets), we used a comprehensive cline-fitting approach to assess the role of natural selection in shaping the spatial pattern of leaf-shape variation in this system. For 551 individuals sampled from 22 populations, we quantified leaf-morphological differentiation, evaluated patterns of neutral genetic variation using five chloroplast DNA intergenic regions and 11 nuclear microsatellite loci, and performed microhabitat and macroclimatic-association analyses. We found that 1-leaflet proportions in O. diversifolia populations significantly increased from west to east, and three phenotypes also differed in leaflet-blade size. However, compared with the other two species, populations of O. diversifolia showed little neutral genetic differentiation, and no population structure was detected at either marker. We further revealed that the leaf-shape cline could largely be explained by three macroclimatic variables, with leaflet number decreasing and leaflet-blade size increasing with annual precipitation and showing the reverse trends with temperature seasonality and isothermality. Our results suggest that spatially varying abiotic environmental factors contribute to shape the leaf-shape cline in O. diversifolia, while the interspecific pattern may be due to both local adaptation and historical events.
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Affiliation(s)
- Hui Wang
- College of Life Sciences, Northwest A&F University, Yangling, China
| | - Pei-Liang Liu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Northwest University, Xi’an, China
| | - Jian Li
- College of Life Sciences, Northwest A&F University, Yangling, China
| | - Han Yang
- College of Life Sciences, Northwest A&F University, Yangling, China
| | - Qin Li
- Department of Science and Education, Field Museum, Chicago, IL, United States
| | - Zhao-Yang Chang
- College of Life Sciences, Northwest A&F University, Yangling, China
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27
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Iwabe R, Koyama K, Komamura R. Shade Avoidance and Light Foraging of a Clonal Woody Species, Pachysandra terminalis. PLANTS 2021; 10:plants10040809. [PMID: 33924069 PMCID: PMC8074284 DOI: 10.3390/plants10040809] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/14/2021] [Accepted: 04/15/2021] [Indexed: 11/16/2022]
Abstract
(1) Background: A central subject in clonal plant ecology is to elucidate the mechanism by which clones forage resources in heterogeneous environments. Compared with studies conducted in laboratories or experimental gardens, studies on light foraging of forest woody clonal plants in their natural habitats are limited. (2) Methods: We investigated wild populations of an evergreen clonal understory shrub, Japanese pachysandra (Pachysandra terminalis Siebold & Zucc.), in two cool-temperate forests in Japan. (3) Results: Similar to the results of herbaceous clonal species, this species formed a dense stand in a relatively well-lit place, and a sparse stand in a shaded place. Higher specific rhizome length (i.e., length per unit mass) in shade resulted in lower ramet population density in shade. The individual leaf area, whole-ramet leaf area, or ramet height did not increase with increased light availability. The number of flower buds per flowering ramet increased as the canopy openness or population density increased. (4) Conclusions: Our results provide the first empirical evidence of shade avoidance and light foraging with morphological plasticity for a clonal woody species.
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28
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Kelly R, Healy K, Anand M, Baudraz MEA, Bahn M, Cerabolini BEL, Cornelissen JHC, Dwyer JM, Jackson AL, Kattge J, Niinemets Ü, Penuelas J, Pierce S, Salguero-Gómez R, Buckley YM. Climatic and evolutionary contexts are required to infer plant life history strategies from functional traits at a global scale. Ecol Lett 2021; 24:970-983. [PMID: 33638576 DOI: 10.1111/ele.13704] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 01/15/2021] [Indexed: 11/27/2022]
Abstract
Life history strategies are fundamental to the ecology and evolution of organisms and are important for understanding extinction risk and responses to global change. Using global datasets and a multiple response modelling framework we show that trait-climate interactions are associated with life history strategies for a diverse range of plant species at the global scale. Our modelling framework informs our understanding of trade-offs and positive correlations between elements of life history after accounting for environmental context and evolutionary and trait-based constraints. Interactions between plant traits and climatic context were needed to explain variation in age at maturity, distribution of mortality across the lifespan and generation times of species. Mean age at maturity and the distribution of mortality across plants' lifespan were under evolutionary constraints. These findings provide empirical support for the theoretical expectation that climatic context is key to understanding trait to life history relationships globally.
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Affiliation(s)
- Ruth Kelly
- Department of Zoology, School of Natural Sciences, Trinity College Dublin, Dublin 2, Ireland.,Environment and Marine Sciences Division, Agri-Food and Biosciences Institute, Belfast, Northern Ireland, BT9 5PX, UK
| | - Kevin Healy
- Department of Zoology, School of Natural Sciences, National University of Ireland Galway, University Rd, Galway, Ireland
| | - Madhur Anand
- Global Ecological Change Laboratory, School of Environmental Sciences, University of Guelph, Guelph, ON, Canada
| | - Maude E A Baudraz
- Department of Zoology, School of Natural Sciences, Trinity College Dublin, Dublin 2, Ireland
| | - Michael Bahn
- Department of Ecology, University of Innsbruck, Innsbruck, Austria
| | - Bruno E L Cerabolini
- Department of Biotechnologies and Life Sciences (DBSV), University of Insubria, via J.H. Dunant 3, Varese, IT-21100, Italy
| | - Johannes H C Cornelissen
- Systems Ecology, Department of Ecological Science, Faculty of Science, Vrije Universiteit, De Boelelaan 1085, Amsterdam, 1081HV, The Netherlands
| | - John M Dwyer
- School of Biological Sciences, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Andrew L Jackson
- Department of Zoology, School of Natural Sciences, Trinity College Dublin, Dublin 2, Ireland
| | - Jens Kattge
- Max Planck Institute for Biogeochemistry, Hans Knöll Str. 10, Jena, 07745, Germany.,German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, Leipzig, 04103, Germany
| | - Ülo Niinemets
- Estonian University of Life Sciences, Kreutzwaldi 1, Tartu, 51006, Estonia
| | - Josep Penuelas
- CREAF, Cerdanyola del Vallès, Barcelona, Catalonia, 08193, Spain.,CSIC, Global Ecology Unit CREAF-CSIC-UAB, 08193 Cerdanyola del Vallès, Catalonia, Spain
| | - Simon Pierce
- Department of Agricultural and Environmental Sciences, University of Milan, via Celoria 2, Milan, IT-20133, Italy
| | | | - Yvonne M Buckley
- Department of Zoology, School of Natural Sciences, Trinity College Dublin, Dublin 2, Ireland.,School of Biological Sciences, The University of Queensland, St Lucia, QLD, 4072, Australia
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29
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Villar R, Olmo M, Atienza P, Garzón AJ, Wright IJ, Poorter H, Hierro LA. Applying the economic concept of profitability to leaves. Sci Rep 2021; 11:49. [PMID: 33420171 PMCID: PMC7794281 DOI: 10.1038/s41598-020-79709-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 12/07/2020] [Indexed: 11/23/2022] Open
Abstract
Economic principles can be extended to biological organisms as they optimize the use of resources, but their use in biology has been limited. We applied concepts from traditional economics to the main production unit of plants, the leaf. We quantified the profitability (profit/cost of investment) of leaves from seven biomes worldwide and compared those to the profitability of companies. Here we demonstrate for the first time key similarities and differences between leaf and human economics. First, there was a weak, but positive relationship between profitability and size, both for leaves and companies. Second, environment has a strong effect on profitability, with high values in leaves from biomes with short growth periods and, for companies associated with innovation. Third, shorter longevity of productive units was related to higher profitability. In summary, by comparing economic behaviours of plants and humans there is potential to develop new perspectives on plant ecological strategies and plant evolution.
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Affiliation(s)
- Rafael Villar
- Area de Ecología, Dpto de Botánica, Ecología y Fisiología Vegetal, Facultad de Ciencias, Universidad de Cordoba, Cordoba, Spain.
| | - Manuel Olmo
- Area de Ecología, Dpto de Botánica, Ecología y Fisiología Vegetal, Facultad de Ciencias, Universidad de Cordoba, Cordoba, Spain
| | - Pedro Atienza
- Departamento de Economía e Historia Económica, Universidad de Sevilla, Sevilla, Spain
| | - Antonio J Garzón
- Departamento de Economía e Historia Económica, Universidad de Sevilla, Sevilla, Spain
| | - Ian J Wright
- Department of Biological Sciences, Macquarie University, North Ryde, NSW, 2109, Australia
| | - Hendrik Poorter
- Department of Biological Sciences, Macquarie University, North Ryde, NSW, 2109, Australia
- Plant Sciences (IBG-2), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
| | - Luis A Hierro
- Departamento de Economía e Historia Económica, Universidad de Sevilla, Sevilla, Spain
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30
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Kang X, Li Y, Zhou J, Zhang S, Li C, Wang J, Liu W, Qi W. Response of Leaf Traits of Eastern Qinghai-Tibetan Broad-Leaved Woody Plants to Climatic Factors. FRONTIERS IN PLANT SCIENCE 2021; 12:679726. [PMID: 34394139 PMCID: PMC8363248 DOI: 10.3389/fpls.2021.679726] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 07/05/2021] [Indexed: 05/02/2023]
Abstract
Plant ecologists have long been interested in quantifying how leaf traits vary with climate factors, but there is a paucity of knowledge on these relationships given a large number of the relevant leaf traits and climate factors to be considered. We examined the responses of 11 leaf traits (including leaf morphology, stomatal structure and chemical properties) to eight common climate factors for 340 eastern Qinghai-Tibetan woody species. We showed temperature as the strongest predictor of leaf size and shape, stomatal size and form, and leaf nitrogen and phosphorus concentrations, implying the important role of local heat quantity in determining the variation in the cell- or organ-level leaf morphology and leaf biochemical properties. The effects of moisture-related climate factors (including precipitation and humidity) on leaf growth were mainly through variability in leaf traits (e.g., specific leaf area and stomatal density) related to plant water-use physiological processes. In contrast, sunshine hours affected mainly cell- and organ-level leaf size and shape, with plants developing small/narrow leaves and stomata to decrease leaf damage and water loss under prolonged solar radiation. Moreover, two sets of significant leaf trait-climate relationships, i.e., the leaf/stomata size traits co-varying with temperature, and the water use-related leaf traits co-varying with precipitation, were obtained when analyzing multi-trait relationships, suggesting these traits as good indicators of climate gradients. Our findings contributed evidence to enhance understanding of the regional patterns in leaf trait variation and its environmental determinants.
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Affiliation(s)
- Xiaomei Kang
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Yanan Li
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Jieyang Zhou
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Shiting Zhang
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Chenxi Li
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Juhong Wang
- College of Life Science and Food Technology, Hanshan Normal University, Chaozhou, China
| | - Wei Liu
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Wei Qi
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, China
- *Correspondence: Wei Qi,
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31
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Sun J, Chen X, Wang M, Li J, Zhong Q, Cheng D. Application of leaf size and leafing intensity scaling across subtropical trees. Ecol Evol 2020; 10:13395-13402. [PMID: 33304546 PMCID: PMC7713914 DOI: 10.1002/ece3.6943] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 09/12/2020] [Accepted: 09/16/2020] [Indexed: 11/27/2022] Open
Abstract
Understanding the scaling between leaf size and leafing intensity (leaf number per stem size) is crucial for comprehending theories about the leaf costs and benefits in the leaf size-twig size spectrum. However, the scaling scope of leaf size versus leafing intensity changes along the twig leaf size variation in different leaf habit species remains elusive. Here, we hypothesize that the numerical value of scaling exponent for leaf mass versus leafing intensity in twig is governed by the minimum leaf mass versus maximum leaf mass (M min versus M max) and constrained to be ≤-1.0. We tested this hypothesis by analyzing the twigs of 123 species datasets compiled in the subtropical mountain forest. The standardized major axis regression (SMA) analyses showed the M min scaled as the 1.19 power of M max and the -α (-1.19) were not statistically different from the exponents of M min versus leafing intensity in whole data. Across leaf habit groups, the M max scaled negatively and isometrically with respect to leafing intensity. The pooled data's scaling exponents ranged from -1.14 to -0.96 for M min and M max versus the leafing intensity based on stem volume (LIV). In the case of M min and M max versus the leafing intensity based on stem mass (LIM), the scaling exponents ranged from -1.24 to -1.04. Our hypothesis successfully predicts that the scaling relationship between leaf mass and leafing intensity is constrained to be ≤-1.0. More importantly, the lower limit to scaling of leaf mass and leafing intensity may be closely correlated with M min versus M max. Besides, constrained by the maximum leaf mass expansion, the broad scope range between leaf size and number may be insensitive to leaf habit groups in subtropical mountain forest.
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Affiliation(s)
- Jun Sun
- Fujian Provincial Key Laboratory of Plant EcophysiologyFujian Normal UniversityFuzhouChina
| | - Xiaoping Chen
- Fujian Provincial Key Laboratory of Plant EcophysiologyFujian Normal UniversityFuzhouChina
| | - Mantang Wang
- Fujian Provincial Key Laboratory of Plant EcophysiologyFujian Normal UniversityFuzhouChina
- School of City and Civil EngineeringZaozhuang UniversityZaozhuangChina
| | - Jinlong Li
- Fujian Provincial Key Laboratory of Plant EcophysiologyFujian Normal UniversityFuzhouChina
| | - Quanlin Zhong
- Fujian Provincial Key Laboratory of Plant EcophysiologyFujian Normal UniversityFuzhouChina
- Institute of GeographyFujian Normal UniversityFuzhouChina
| | - Dongliang Cheng
- Fujian Provincial Key Laboratory of Plant EcophysiologyFujian Normal UniversityFuzhouChina
- Institute of GeographyFujian Normal UniversityFuzhouChina
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32
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Overlapping Water and Nutrient Use Efficiencies and Carbon Assimilation between Coexisting Simple- and Compound-Leaved Trees from a Valley Savanna. WATER 2020. [DOI: 10.3390/w12113037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Identifying differences in ecophysiology between simple and compound leaves can help understand the adaptive significance of the compound leaf form and its response to climate change. However, we still know surprisingly little about differences in water and nutrient use, and photosynthetic capacity between co-occurring compound-leaved and simple-leaved tree species, especially in savanna ecosystems with dry-hot climate conditions. From July to September in 2015, we investigated 16 functional traits associated with water use, nutrients, and photosynthesis of six deciduous tree species (three simple-leaved and three compound-leaved species) coexisting in a valley-savanna in Southwest China. Our major objective was to test the variation in these functional traits between these two leaf forms. Overall, overlapping leaf mass per area (LMA), photosynthesis, as well as leaf nitrogen and phosphorus concentrations were found between these coexisting valley-savanna simple- and compound-leaved tree species. We didn’t find significant differences in water and photosynthetic nitrogen or phosphorus use efficiency between simple and compound leaves. Across these simple- and compound-leaved tree species, photosynthetic phosphorus use efficiencies were positively related to LMA and negatively correlated with phosphorus concentration per mass or area. Water use efficiency (intrinsic water use efficiency or stable carbon isotopic composition) was independent of all leaf traits. Similar ecophysiology strategies among these coexisting valley-savanna simple- and compound-leaved species suggested a convergence in ecological adaptation to the hot and dry environment. The overlap in traits related to water use, carbon assimilation, and stress tolerance (e.g., LMA) also suggests a similar response of these two leaf forms to a hotter and drier future due to the climate change.
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Ma R, Xu S, Chen Y, Guo F, Wu R. Allometric relationships between leaf and bulb traits of Fritillaria przewalskii Maxim. grown at different altitudes. PLoS One 2020; 15:e0239427. [PMID: 33017404 PMCID: PMC7535033 DOI: 10.1371/journal.pone.0239427] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 08/21/2020] [Indexed: 12/01/2022] Open
Abstract
Plants adapt to high altitudes by adjusting the characteristics of their above and underground organs. Identifying the species-specific plant traits changed in response to altitude is essential for understanding ecophysiological processes at the ecosystem level. Multiple studies analyzed the effects of altitude on above and underground organ traits in different species. Yet, little is known about those responses in the alpine Fritillaria przewalskii Maxim. (Liliaceae). F. przewalskii is a perennial medicinal plant with meager annual growth and vanishing wild populations. We analyzed leaf and bulb functional traits, and their allometric relationships in F. przewalskii plants grown at three altitudes: 3000, 2700, and 2400 m. Leaf thickness, leaf biomass, leaf biomass allocation, and the aboveground:underground ratio increased significantly with increasing altitude. Conversely, bulb allocation decreased at higher altitudes. The altitude influenced the allometric growth trajectories of specific leaf and bulb traits: higher altitudes led to thicker and broader leaves and changed the shape of the bulbs from more circular, which is ideal (at 2700 m), to more elongated (at 3000 m). Those variations had remarkable ecological significance. Hence, bulb biomass is the largest at 2700 m of altitude for which their vertical and longitudinal ratio is unaffected. which is economically favorable. Our findings show that F. przewalskii has a notable potential of growth and morphological plasticity along the altitude gradient and that 2700 m might be ideal for developing its artificial cultivation.
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Affiliation(s)
- Ruili Ma
- Qinghai University Medical College, Qinghai Provincial Key Laboratory of Traditional Chinese Medicine Research for Glucolipid Metabolic Diseases, Xi′ning, China
- College of Agronomy, Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Genetic & Germplasm Enhancement, Gansu Provincial Key Lab of Good Agricultural Production for Traditional Chinese Medicines, Gansu Provincial Engineering Research Centre for Medical Plant Cultivation and Breeding, College of Life Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Shengrong Xu
- Qinghai University Medical College, Qinghai Provincial Key Laboratory of Traditional Chinese Medicine Research for Glucolipid Metabolic Diseases, Xi′ning, China
- College of Agronomy, Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Genetic & Germplasm Enhancement, Gansu Provincial Key Lab of Good Agricultural Production for Traditional Chinese Medicines, Gansu Provincial Engineering Research Centre for Medical Plant Cultivation and Breeding, College of Life Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Yuan Chen
- College of Agronomy, Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Genetic & Germplasm Enhancement, Gansu Provincial Key Lab of Good Agricultural Production for Traditional Chinese Medicines, Gansu Provincial Engineering Research Centre for Medical Plant Cultivation and Breeding, College of Life Science and Technology, Gansu Agricultural University, Lanzhou, China
- * E-mail: (YC); (FG)
| | - Fengxia Guo
- College of Agronomy, Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Genetic & Germplasm Enhancement, Gansu Provincial Key Lab of Good Agricultural Production for Traditional Chinese Medicines, Gansu Provincial Engineering Research Centre for Medical Plant Cultivation and Breeding, College of Life Science and Technology, Gansu Agricultural University, Lanzhou, China
- * E-mail: (YC); (FG)
| | - Rui Wu
- College of Agronomy, Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Genetic & Germplasm Enhancement, Gansu Provincial Key Lab of Good Agricultural Production for Traditional Chinese Medicines, Gansu Provincial Engineering Research Centre for Medical Plant Cultivation and Breeding, College of Life Science and Technology, Gansu Agricultural University, Lanzhou, China
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Comparison of the Scaling Relationships of Leaf Biomass versus Surface Area between Spring and Summer for Two Deciduous Tree Species. FORESTS 2020. [DOI: 10.3390/f11091010] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The scaling relationship between either leaf dry or fresh mass (M) and surface area (A) can reflect the photosynthetic potential and efficiency of light harvesting in different broad-leaved plants. In growing leaves, lamina area expansion is typically finished before the completion of leaf biomass accumulation, thereby affecting the M vs. A scaling relationship at different developmental stages of leaves (e.g., young vs. adult leaves). In addition, growing plants can have different-sized leaves at different plant ages, potentially also changing M vs. A scaling. Furthermore, leaf shape can also change during the course of ontogeny and modify the M vs. A scaling relationship. Indeed, the effect of seasonal changes in leaf shape on M vs. A scaling has not been examined in any previous studies known to us. The study presented here was conducted using two deciduous tree species: Alangium chinense (saplings forming leaves through the growing season) and Liquidambar formosana (adult trees producing only one leaf flush in spring) that both have complex but nearly bilaterally symmetrical leaf shapes. We determined (i) whether leaf shapes differed in spring versus summer; (ii) whether the M vs. A scaling relationship varied over time; and (iii) whether there is a link between leaf shape and the scaling exponent governing the M vs. A scaling relationship. The data indicated that (i) the leaf dissection index in spring was higher than that in summer for both species (i.e., leaf-shape complexity decreased from young to adult leaves); (ii) there was a significant difference in the numerical value of the scaling exponent of leaf perimeter vs. area between leaves sampled at the two dates; (iii) spring leaves had a higher water content than summer leaves, and the scaling exponents of dry mass vs. area and fresh mass vs. area were all greater than unity; (iv) the scaling relationship between fresh mass and area was statistically more robust than that between leaf dry mass and area; (v) the scaling exponents of leaf dry and fresh mass vs. area of A. chinense leaves in spring were greater than those in summer (i.e., leaves in younger plants tend to be larger than leaves in older plants), whereas, for the adult trees of L. formosana, the scaling exponent in spring was smaller than that in summer, indicating increases in leaf dry mass per unit area with increasing leaf age; and (vi) leaf shape appears not to be related to the scaling relationship between either leaf dry or fresh mass and area, but is correlated with the scaling exponent of leaf perimeter vs. area (which tends to be a ½ power function). These trends indicate that studies of leaf morphometrics and scaling relationships must consider the influence of seasonality and plant age in sampling of leaves and the interpretation of data.
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35
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A general formula for calculating surface area of the similarly shaped leaves: Evidence from six Magnoliaceae species. Glob Ecol Conserv 2020. [DOI: 10.1016/j.gecco.2020.e01129] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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Schmitt S, Hérault B, Ducouret É, Baranger A, Tysklind N, Heuertz M, Marcon É, Cazal SO, Derroire G. Topography consistently drives intra‐ and inter‐specific leaf trait variation within tree species complexes in a Neotropical forest. OIKOS 2020. [DOI: 10.1111/oik.07488] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sylvain Schmitt
- Univ. Bordeaux, INRAE, BIOGECO 69 route d'Arcachon FR‐33610 Cestas France
| | - Bruno Hérault
- CIRAD, UPR Forêts et Sociétés, Yamoussoukro, Côte d'Ivoire, and: Forêts et Sociétés, Univ Montpellier, CIRAD Montpellier France
| | - Émilie Ducouret
- Cirad, UMR EcoFoG (Agroparistech, CNRS, INRAE, Université des Antilles, Univ. de la Guyane) Kourou French Guiana
| | - Anne Baranger
- Univ. Bordeaux, INRAE, BIOGECO 69 route d'Arcachon FR‐33610 Cestas France
| | - Niklas Tysklind
- INRAE, UMR EcoFoG (Agroparistech, CNRS, Cirad, Université des Antilles, Univ. de la Guyane) Kourou French Guiana
| | - Myriam Heuertz
- Univ. Bordeaux, INRAE, BIOGECO 69 route d'Arcachon FR‐33610 Cestas France
| | - Éric Marcon
- Agroparistech, UMR EcoFoG (CNRS, Cirad, INRAE, Université des Antilles, Univ. de la Guyane) Kourou French Guiana
| | - Saint Omer Cazal
- INRAE, UMR EcoFoG (Agroparistech, CNRS, Cirad, Université des Antilles, Univ. de la Guyane) Kourou French Guiana
| | - Géraldine Derroire
- Cirad, UMR EcoFoG (Agroparistech, CNRS, INRAE, Université des Antilles, Univ. de la Guyane) Kourou French Guiana
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37
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Ulrich W, Kusumoto B, Fattorini S, Kubota Y. Factors influencing the precision of species richness estimation in Japanese vascular plants. DIVERS DISTRIB 2020. [DOI: 10.1111/ddi.13049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Werner Ulrich
- Department of Ecology and Biogeography Nicolaus Copernicus University Toruń Poland
| | - Buntarou Kusumoto
- Faculty of Science University of the Ryukyus Nishihara Japan
- Royal Botanic Gardens Kew Richmond UK
| | - Simone Fattorini
- Department of Life Health & Environmental Sciences University of L'Aquila L'Aquila Italy
| | - Yasuhiro Kubota
- Faculty of Science University of the Ryukyus Nishihara Japan
- Marine and Terrestrial Field Ecology Tropical Biosphere Research Center University of the Ryukyus Nishihara Japan
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Burton JI, Perakis SS, Brooks JR, Puettmann KJ. Trait integration and functional differentiation among co-existing plant species. AMERICAN JOURNAL OF BOTANY 2020; 107:628-638. [PMID: 32236958 PMCID: PMC8108537 DOI: 10.1002/ajb2.1451] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 01/16/2020] [Indexed: 05/17/2023]
Abstract
PREMISE Determining which traits characterize strategies of coexisting species is important to developing trait-based models of plant communities. First, global dimensions may not exist locally. Second, the degree to which traits and trait spectra constitute independent dimensions of functional variation at various scales continues to be refined. Finally, traits may be associated with existing categorical groupings. METHODS We assessed trait integration and differentiation across 57 forest understory plant species in Douglas-fir forests of western Oregon, United States. We combined measurements for a range of traits with literature-based estimates of seed mass and species groupings. We used network analysis and nonmetric multidimensional scaling ordination (NMS) to determine the degree of integration. RESULTS We observed a strong leaf economics spectrum (LES) integrated with stem but not root traits. However, stem traits and intrinsic water-use efficiency integrated LES and root traits. Network analyses indicated a modest grouping of a priori trait dimensions. NMS indicated that multivariate differences among species were related primarily to (1) rooting depth and plant height vs. specific root length, (2) the LES, and (3) leaf size vs. seed mass. These differences were related to species groupings associated with growth and life form, leaf lifespan and seed dispersal mechanisms. CONCLUSIONS The strategies of coexisting understory plant species could not be reduced to a single dimension. Yet, species can be characterized efficiently and effectively for trait-based studies of plant communities by measuring four common traits: plant height, specific leaf area, leaf size, and seed mass.
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Affiliation(s)
- Julia I. Burton
- State University of New York College of Environmental Sciences and Forestry, Department of Sustainable Resources Management, 320 Bray Hall, 1 Forestry Dr., Syracuse, NY 13210, USA
| | - Steven S. Perakis
- U.S. Geological Survey, Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR 97331, USA
| | - J. Renée Brooks
- U.S. Environmental Protection Agency, Western Ecology Division, 200 SW 35, Corvallis, OR 97331, USA
| | - Klaus J. Puettmann
- Oregon State University, Department of Forest Ecosystems and Society, 321 Richardson Hall, Corvallis, OR 97331, USA
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39
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Shi P, Li Y, Hui C, Ratkowsky DA, Yu X, Niinemets Ü. Does the law of diminishing returns in leaf scaling apply to vines? – Evidence from 12 species of climbing plants. Glob Ecol Conserv 2020. [DOI: 10.1016/j.gecco.2019.e00830] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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40
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Levionnois S, Coste S, Nicolini E, Stahl C, Morel H, Heuret P. Scaling of petiole anatomies, mechanics and vasculatures with leaf size in the widespread Neotropical pioneer tree species Cecropia obtusa Trécul (Urticaceae). TREE PHYSIOLOGY 2020; 40:245-258. [PMID: 31976541 DOI: 10.1093/treephys/tpz136] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 11/28/2019] [Accepted: 12/18/2019] [Indexed: 06/10/2023]
Abstract
Although the leaf economic spectrum has deepened our understanding of leaf trait variability, little is known about how leaf traits scale with leaf area. This uncertainty has resulted in the assumption that leaf traits should vary by keeping the same pace of variation with increases in leaf area across the leaf size range. We evaluated the scaling of morphological, tissue-surface and vascular traits with overall leaf area, and the functional significance of such scaling. We examined 1,271 leaves for morphological traits, and 124 leaves for anatomical and hydraulic traits, from 38 trees of Cecropia obtusa Trécul (Urticaceae) in French Guiana. Cecropia is a Neotropical genus of pioneer trees that can exhibit large laminas (0.4 m2 for C. obtusa), with leaf size ranging by two orders of magnitude. We measured (i) tissue fractions within petioles and their second moment of area, (ii) theoretical xylem hydraulic efficiency of petioles and (iii) the extent of leaf vessel widening within the hydraulic path. We found that different scaling of morphological trait variability allows for optimisation of lamina display among larger leaves, especially the positive allometric relationship between lamina area and petiole cross-sectional area. Increasing the fraction of pith is a key factor that increases the geometrical effect of supportive tissues on mechanical rigidity and thereby increases carbon-use efficiency. We found that increasing xylem hydraulic efficiency with vessel size results in lower leaf lamina area: xylem ratios, which also results in potential carbon savings for large leaves. We found that the vessel widening is consistent with hydraulic optimisation models. Leaf size variability modifies scaling of leaf traits in this large-leaved species.
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Affiliation(s)
- Sébastien Levionnois
- UMR EcoFoG, AgroParisTech, CIRAD, CNRS, INRAE, UA, UG, 97379 Kourou Cedex, France
| | - Sabrina Coste
- UMR EcoFoG, AgroParisTech, CIRAD, CNRS, INRAE, UA, UG, 97379 Kourou Cedex, France
| | - Eric Nicolini
- UMR AMAP, CIRAD, CNRS, INRAE, IRD, Université de Montpellier, 34398 Montpellier, France
| | - Clément Stahl
- UMR EcoFoG, AgroParisTech, CIRAD, CNRS, INRAE, UA, UG, 97379 Kourou Cedex, France
| | - Hélène Morel
- UMR EcoFoG, AgroParisTech, CIRAD, CNRS, INRAE, UA, UG, 97379 Kourou Cedex, France
| | - Patrick Heuret
- UMR EcoFoG, AgroParisTech, CIRAD, CNRS, INRAE, UA, UG, 97379 Kourou Cedex, France
- UMR AMAP, CIRAD, CNRS, INRAE, IRD, Université de Montpellier, 34398 Montpellier, France
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41
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Moore TE, Jones CS, Chong C, Schlichting CD. Impact of rainfall seasonality on intraspecific trait variation in a shrub from a Mediterranean climate. Funct Ecol 2020. [DOI: 10.1111/1365-2435.13533] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Timothy E. Moore
- Department of Ecology and Evolutionary Biology University of Connecticut Storrs CT USA
| | - Cynthia S. Jones
- Department of Ecology and Evolutionary Biology University of Connecticut Storrs CT USA
| | - Caroline Chong
- Species Conservation, Flora and Fauna Division Department of Environment and Natural Resources Northern Territory Government Palmerston NT Australia
| | - Carl D. Schlichting
- Department of Ecology and Evolutionary Biology University of Connecticut Storrs CT USA
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42
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“Diminishing Returns” in the Scaling between Leaf Area and Twig Size in Three Forest Communities Along an Elevation Gradient of Wuyi Mountain, China. FORESTS 2019. [DOI: 10.3390/f10121138] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background and aims: The “diminishing returns” hypothesis postulates that the scaling exponent governing the lamina area versus lamina mass scaling relationships has, on average, a numerical value less than one. Theoretically, a similar scaling relationship may exist at the twig level. However, this possibility has not been explored empirically. Methods: We tested both hypotheses by measuring the lamina area and mass, petiole mass of individual leaves, and the total foliage area and stem mass of individual current-year shoots (twigs) of 64 woody species growing in three characteristic forest community types: (1) Evergreen broad-leaved, (2) mixed coniferous and broad-leaved, and (3) deciduous. Key results: The results demonstrate that lamina area vs. mass and lamina area vs. petiole mass differ significantly among the three forest types at both the individual leaf and twig levels. Nevertheless, the scaling exponents of lamina area vs. mass were <1.0 in each of the three community types, as were the corresponding exponents for lamina area vs. petiole mass, both within and across the three community types. Similar trends were observed at the individual twig level. The numerical values of the scaling exponent for lamina area vs. petiole mass and total foliage area vs. stem mass per twig decreased with increased elevation. Conclusions: These data support the “diminishing returns” hypothesis at both the individual leaf level and at the individual twig level, phenomena that can inform future inquiries into the mechanistic basis of biomass allocation patterns to physiological (leaf) and mechanical (stem) plant organs.
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Richards TJ, Ortiz‐Barrientos D, McGuigan K. Natural selection drives leaf divergence in experimental populations of Senecio lautus under natural conditions. Ecol Evol 2019; 9:6959-6967. [PMID: 31380026 PMCID: PMC6662321 DOI: 10.1002/ece3.5263] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 04/21/2019] [Accepted: 04/23/2019] [Indexed: 11/11/2022] Open
Abstract
Leaf morphology is highly variable both within and between plant species. This study employs a combination of common garden and reciprocal transplant experiments to determine whether differences in leaf shape between Senecio lautus ecotypes has evolved as an adaptive response to divergent ecological conditions.We created a synthetic population of hybrid genotypes to segregate morphological variation between three ecotypes and performed reciprocal transplants where this hybrid population was transplanted into the three adjacent native environments. We measured nine leaf morphology traits across the experimental and natural populations at these sites.We found significant divergence in multivariate leaf morphology toward the native character in each environment, suggesting environmental conditions at each site exert selective pressure that results in a phenotypic shift toward the local phenotype of the wild populations.These associations suggest that differences in leaf morphology between S. lautus ecotypes have arisen as a result of divergent selection on leaf shape or associated traits that confer an adaptive advantage in each environment, which has led to the formation of morphologically distinct ecotypes.
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Affiliation(s)
- Thomas J. Richards
- School of Biological Sciences St LuciaUniversity of QueenslandSt LuciaQueenslandAustralia
- Department of Plant BiologySwedish University of Agricultural SciencesLinnean Center for Plant BiologyUppsalaSweden
| | | | - Katrina McGuigan
- School of Biological Sciences St LuciaUniversity of QueenslandSt LuciaQueenslandAustralia
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Yang D, Zhang YJ, Song J, Niu CY, Hao GY. Compound leaves are associated with high hydraulic conductance and photosynthetic capacity: evidence from trees in Northeast China. TREE PHYSIOLOGY 2019; 39:729-739. [PMID: 30668831 DOI: 10.1093/treephys/tpy147] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 12/08/2018] [Accepted: 12/19/2018] [Indexed: 06/09/2023]
Abstract
Characterizing differences in key functional traits between simple-leaved (SL) and compound-leaved (CL) tree species can contribute to a better understanding of the adaptive significance of compound leaf form. In particular, this information may provide a mechanistic explanation to the long-proposed fast-growth hypothesis of CL tree species. Here, using five SL and five CL tree species co-occurring in a typical temperate forest of Northeast China, we tested whether higher hydraulic efficiency underlies potentially high photosynthetic capacity in CL species. We found that the CL species had significantly higher hydraulic conductance at the whole-branch level than the SL species (0.52 ± 0.13 vs 0.15 ± 0.04 × 10-4 kg m-2 s-1 Pa-1, P = 0.029). No significant difference in net photosynthetic rate (14.7 ± 2.43 vs 12.5 ± 2.05 μmol m-2 s-1, P = 0.511) was detected between these two groups, but this was largely due to the existence of one outlier species in each of the two functional groups. Scrutinization of the intragroup variations in functional traits revealed that distinctions of the two outlier species in wood type (ring- vs diffuse-porous) from their respective functional groups have likely contributed to their aberrant physiological performances. The potentially high photosynthetic capacity of CL species seems to require ring-porous wood to achieve high hydraulic efficiency. Due to its limitation on leaf photosynthetic capacity, diffuse-porous wood with lower hydraulic conductivity largely precludes its combination with the 'throw-away' strategy (i.e., annually replacing the stem-like rachises) of compound-leaved tree species, which intrinsically requires high carbon assimilation rate to compensate for their extra carbon losses. Our results for the first time show clear differentiation in hydraulic architecture and CO2 assimilation between sympatric SL and CL species, which contributes to the probing of the underlying mechanism responsible for the potential fast growth of trees with compound leaves.
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Affiliation(s)
- Da Yang
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yong-Jiang Zhang
- School of Biology and Ecology, the University of Maine, Orono, ME, USA
| | - Jia Song
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Cun-Yang Niu
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Guang-You Hao
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
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Wang N, Palmroth S, Maier CA, Domec JC, Oren R. Anatomical changes with needle length are correlated with leaf structural and physiological traits across five Pinus species. PLANT, CELL & ENVIRONMENT 2019; 42:1690-1704. [PMID: 30684950 DOI: 10.1111/pce.13516] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 12/22/2018] [Accepted: 12/27/2018] [Indexed: 06/09/2023]
Abstract
The genus Pinus has wide geographical range and includes species that are the most economically valued among forest trees worldwide. Pine needle length varies greatly among species, but the effects of needle length on anatomy, function, and coordination and trade-offs among traits are poorly understood. We examined variation in leaf morphological, anatomical, mechanical, chemical, and physiological characteristics among five southern pine species: Pinus echinata, Pinus elliottii, Pinus palustris, Pinus taeda, and Pinus virginiana. We found that increasing needle length contributed to a trade-off between the relative fractions of support versus photosynthetic tissue (mesophyll) across species. From the shortest (7 cm) to the longest (36 cm) needles, mechanical tissue fraction increased by 50%, whereas needle dry density decreased by 21%, revealing multiple adjustments to a greater need for mechanical support in longer needles. We also found a fourfold increase in leaf hydraulic conductance over the range of needle length across species, associated with weaker upward trends in stomatal conductance and photosynthetic capacity. Our results suggest that the leaf size strongly influences their anatomical traits, which, in turn, are reflected in leaf mechanical support and physiological capacity.
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Affiliation(s)
- Na Wang
- School of Forestry, Northeast Forestry University, Harbin, 150040, China
- Nicholas School of the Environment, Duke University, Durham, NC, 27708, USA
| | - Sari Palmroth
- Nicholas School of the Environment, Duke University, Durham, NC, 27708, USA
| | | | - Jean-Christophe Domec
- Nicholas School of the Environment, Duke University, Durham, NC, 27708, USA
- Bordeaux Sciences Agro, UMR 1391 INRA-ISPA, 33175 Gradignan Cedex, France
| | - Ram Oren
- Nicholas School of the Environment, Duke University, Durham, NC, 27708, USA
- Department of Forest Sciences, University of Helsinki, Helsinki, Finland
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Valliere JM, Zhang J, Sharifi MR, Rundel PW. Can we condition native plants to increase drought tolerance and improve restoration success? ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2019; 29:e01863. [PMID: 30831005 DOI: 10.1002/eap.1863] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 11/28/2018] [Accepted: 01/07/2019] [Indexed: 06/09/2023]
Abstract
A common method in ecological restoration is the transplanting of nursery-grown seedlings to the field and, with proper resources, this technique can be highly successful. However, stressors such as drought may negatively impact plant performance and restoration success, especially in dryland ecosystems. Furthermore, increasing environmental change may hamper the ability of practitioners to restore native vegetation. A growing body of research suggests that exposing plants to a stressor may improve tolerance to subsequent stress events later in life. We sought to understand if such a phenomenon could be exploited in order to improve plant drought-tolerance and aid native plant restoration in southern California. In a multi-phase experiment, we first exposed seedlings of native perennials to episodic drought and then later compared the response of these plants to a second drought event to that of well-watered controls. We also transplanted replicates of both treatments to a restoration site in the field to test whether exposure to drought as a seedling could improve plant performance. Plant species responded to drought differently, with species exhibiting the full range of positive, neutral, and negative responses to temporal variability in water stress. However, some species appeared to benefit from drought preconditioning, exhibiting greater growth and increased water-use efficiency compared to well-watered plants. This suggests that simple applications of stress treatments could improve plant growth and stress tolerance, but the success of this method is likely very species specific. Restoration practitioners should consider conducting pilot studies with target plant species to better understand if this technique could assist in achieving restoration goals.
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Affiliation(s)
- Justin M Valliere
- La Kretz Center for California Conservation Science, Institute of the Environment and Sustainability, University of California, Los Angeles, Los Angeles, California, 90095, USA
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, Los Angeles, California, 90095, USA
| | - Jacqueline Zhang
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, Los Angeles, California, 90095, USA
| | - M Rasoul Sharifi
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, Los Angeles, California, 90095, USA
| | - Phillip W Rundel
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, Los Angeles, California, 90095, USA
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Xu C, Ge Y, Wang J. Molecular basis underlying the successful invasion of hexaploid cytotypes of Solidago canadensis L.: Insights from integrated gene and miRNA expression profiling. Ecol Evol 2019; 9:4820-4852. [PMID: 31031947 PMCID: PMC6476842 DOI: 10.1002/ece3.5084] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 02/20/2019] [Accepted: 03/01/2019] [Indexed: 12/04/2022] Open
Abstract
Dissecting complex connections between cytogenetic traits (ploidy levels) and plant invasiveness has emerged as a popular research subject in the field of invasion biology. Although recent work suggests that polyploids are more likely to be invasive than their corresponding diploids, the molecular basis underlying the successful invasion of polyploids remains largely unexplored. To this end, we adopted an RNA-seq and sRNA-seq approach to describe how polyploids mediate invasiveness differences in two contrasting cytotypes of Solidago canadensis L., a widespread wild hexaploid invader with localized cultivated diploid populations. Our analysis of the leaf transcriptome revealed 116,801 unigenes, of which 12,897 unigenes displayed significant differences in expression levels. A substantial number of these differentially expressed unigenes (DEUs) were significantly associated with the biosynthesis of secondary metabolites, carbohydrate metabolism, lipid metabolism, and environmental adaptation pathways. Gene Ontology term enrichment-based categorization of DEU-functions was consistent with this observation, as terms related to single-organism, cellular, and metabolic processes including catalytic, binding, transporter, and enzyme regulator activity were over-represented. Concomitantly, 186 miRNAs belonging to 44 miRNA families were identified in the same leaf tissues, with 59 miRNAs being differentially expressed. Furthermore, we discovered 83 miRNA-target interacting pairs that were oppositely regulated, and a meticulous study of these targets depicted that several unigenes encoding transcription factors, DNA methyltransferase, and leucine-rich repeat receptor-like kinases involved in the stress response were greatly influenced. Collectively, these transcriptional and epigenetic data provide new insights into miRNA-mediated gene expression regulatory mechanisms that may operate in hexaploid cytotypes to favor successful invasion.
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Affiliation(s)
- Chanchan Xu
- State Key Laboratory of Hybrid Rice, College of Life SciencesWuhan UniversityWuhanChina
| | - Yimeng Ge
- State Key Laboratory of Hybrid Rice, College of Life SciencesWuhan UniversityWuhanChina
| | - Jianbo Wang
- State Key Laboratory of Hybrid Rice, College of Life SciencesWuhan UniversityWuhanChina
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Mitchell N, Holsinger KE. Microscale trait-environment associations in two closely-related South African shrubs. AMERICAN JOURNAL OF BOTANY 2019; 106:211-222. [PMID: 30768876 DOI: 10.1002/ajb2.1234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 11/27/2018] [Indexed: 06/09/2023]
Abstract
PREMISE OF THE STUDY Plant traits are often associated with the environments in which they occur, but these associations often differ across spatial and phylogenetic scales. Here we study the relationship between microenvironment, microgeographical location, and traits within populations using co-occurring populations of two closely related evergreen shrubs in the genus Protea. METHODS We measured a suite of functional traits on 147 plants along a single steep mountainside where both species occur, and we used data-loggers and soil analyses to characterize the environment at 10 microsites spanning the elevational gradient. We used Bayesian path analyses to detect trait-environment relationships in the field for each species. We used complementary data from greenhouse grown seedlings derived from wild collected seed to determine whether associations detected in the field are the result of genetic differentiation. KEY RESULTS Microenvironmental variables differed substantially across our study site. We found strong evidence for six trait-environment associations, although these differed between species. We were unable to detect similar associations in greenhouse-grown seedlings. CONCLUSIONS Several leaf traits were associated with temperature and soil variation in the field, but the inability to detect these in the greenhouse suggests that differences in the field are not the result of genetic differentiation.
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Affiliation(s)
- Nora Mitchell
- Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, Connecticut, 06269, USA
- Department of Biology, University of New Mexico, Albuquerque, New Mexico, 87131, USA
| | - Kent E Holsinger
- Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, Connecticut, 06269, USA
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Li L, Zhang T, Zhao C, Li Y, Li Y, Mu C. Leaf and stem traits variation of
Stellera chamaejasme
Linn. with slope aspect in alpine steppe. Ecol Res 2019. [DOI: 10.1111/1440-1703.1007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Lili Li
- Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences Lanzhou University Lanzhou China
| | - Tingjun Zhang
- Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences Lanzhou University Lanzhou China
| | - Chengzhang Zhao
- College of Geography and Environmental Science Northwest Normal University Lanzhou China
| | - Yu Li
- Institute of Environmental Science Beijing Normal University Beijing China
| | - Yuxing Li
- Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences Lanzhou University Lanzhou China
| | - Cuicui Mu
- Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences Lanzhou University Lanzhou China
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Wang C, He J, Zhao TH, Cao Y, Wang G, Sun B, Yan X, Guo W, Li MH. The Smaller the Leaf Is, the Faster the Leaf Water Loses in a Temperate Forest. FRONTIERS IN PLANT SCIENCE 2019; 10:58. [PMID: 30778364 PMCID: PMC6369174 DOI: 10.3389/fpls.2019.00058] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 01/16/2019] [Indexed: 05/18/2023]
Abstract
Leaf size (i.e., leaf surface area and leaf dry mass) profoundly affects a variety of biological carbon, water and energy processes. Therefore, the remarkable variability in individual leaf size and its trade-off with total leaf number in a plant have particularly important implications for understanding the adaption strategy of plants to environmental changes. The various leaf sizes of plants growing in the same habitat are expected to have distinct abilities of thermal regulation influencing leaf water loss and shedding heat. Here, we sampled 16 tree species co-occurring in a temperate forest in northeastern China to quantify the variation of leaf, stomata and twigs traits, and to determine the relationships of leaf size with leaf number and leaf water loss. We examined the right-skewed distributions of leaf size, leafing intensity, stomatal size and stomatal density across species. Leafing intensity was significantly negatively correlated with leaf size, accounting for 4 and 12% of variation in leaf area and leaf mass, respectively. Species was the most important factor in explaining the variation in leaf size (conditional R 2 of 0.92 for leaf area and 0.82 for leaf mass). Leaf area and mass significantly increased with increasing diameter of twigs. Leaf water loss was strongly negatively correlated with leaf area and leaf mass during the first four hours of the measurement. Leaf area and leaf mass accounted for 38 and 30% of variation in total leaf water loss, respectively. Leaf water loss rate (k) was significantly different among tree species and markedly linearly decreased with increasing leaf area and leaf mass for simple-leaved tree species. In conclusion, the existence of a cross-species trade-off between the size of individual leaves and the number of leaves per yearly twig unit was confirmed in that temperate forest. There was strongly negative correlation between leaf water loss and leaf size across tree species, which provides evidences for leaf size in leaf temperature regulation in dry environment with strong radiation. The size-dependent leaf water relation is of central importance to recognize the functional role of leaf size in a changing climate including rapid changes in air temperature and rainfall.
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Affiliation(s)
- Cunguo Wang
- College of Agronomy, Shenyang Agricultural University, Shenyang, China
- School of Geographical Sciences, Northeast Normal University, Changchun, China
| | - Junming He
- College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Tian-Hong Zhao
- College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Ying Cao
- College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Guojiao Wang
- College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Bei Sun
- College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Xuefei Yan
- College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Wei Guo
- College of Agronomy, Shenyang Agricultural University, Shenyang, China
- *Correspondence: Wei Guo,
| | - Mai-He Li
- School of Geographical Sciences, Northeast Normal University, Changchun, China
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland
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