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Rios CO, Pimentel PA, Bicalho EM, Garcia QS, Pereira EG. Photochemical attributes determine the responses of plant species from different functional groups of ferruginous outcrops when grown in iron mining substrates. FUNCTIONAL PLANT BIOLOGY : FPB 2024; 51:FP23207. [PMID: 38163648 DOI: 10.1071/fp23207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 12/02/2023] [Indexed: 01/03/2024]
Abstract
Environments originating from banded iron formations, such as the canga , are important reference ecosystems for the recovery of degraded areas by mining. The objective of this work was to evaluate if the relationship between morphofunctional and photosynthetic attributes of native canga species from different functional group results in distinct responses when grown in iron mining tailings substrate. The experiment was carried out with species belonging to different functional groups: a widespread semi-deciduous tree-shrub, Myrcia splendens ; an endemic deciduous shrub, Jacaranda caroba ; and a nitrogen-fixing herbaceous species, Periandra mediterranea . The species were grown in two conditions, reference soil and iron ore tailing. Despite belonging to different functional groups when grown in tailings, the morphofunctional attributes presented similar responses between species. M. splendens was the species most affected by the conditions imposed by the iron ore mining tailings, with decreased light-use efficiency and electron transport. P. mediterranea had satisfactory growth and maintenance of photosynthetic attributes. J. caroba growing in the tailings increased the effective quantum yield of PSII. The photochemical and growth assessments were able to better explain the adaptive strategies developed by the species, guaranteeing a greater chance of success during the rehabilitation of mining substrates.
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Affiliation(s)
- Camilla Oliveira Rios
- Graduate program in Plant Biology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | - Paulo Antônio Pimentel
- Institute of Biological and Health Sciences, Federal University of Viçosa (UFV), Campus Florestal, Florestal, Minas Gerais, Brazil
| | - Elisa Monteze Bicalho
- Plant Growth and Development Laboratory, Plant Physiology, Federal University of Lavras (UFLA), University Campus, Lavras, Minas Gerais, Brazil
| | - Queila Souza Garcia
- Laboratory of Plant Physiology, Department of Botany, Institute of Biological Sciences, Federal University of Minas Gerais, Pampulha, Belo Horizonte, Minas Gerais, Brazil
| | - Eduardo Gusmão Pereira
- Institute of Biological and Health Sciences, Federal University of Viçosa (UFV), Campus Florestal, Florestal, Minas Gerais, Brazil
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Fan R, Huang Y, Liu W, Jiang S, Ji W. Dauciform roots affect the position of the neighboring plants on the economic spectrum in degraded alpine meadows. FRONTIERS IN PLANT SCIENCE 2023; 14:1277013. [PMID: 37936938 PMCID: PMC10627033 DOI: 10.3389/fpls.2023.1277013] [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: 08/13/2023] [Accepted: 10/11/2023] [Indexed: 11/09/2023]
Abstract
Background and aims Special root structures that can dissolve insoluble phosphorus locked in soil are supposed to contribute not only to the growing status of themselves but also to the neighbouring plants. However, whether dauciform roots have any effect on the neighbouring plants and how does it respond to meadow degradation had not been studied. Methods Alpine meadows with different degradation statuses were selected and the functional traits of Carex filispica and the co-occurring species Polygonum viviparum were measured to explore their response to degradation, as well as the response of Polygonum viviparum to the dauciform roots of Carex filispica. Results The results showed that 1) the number of dauciform roots decreased with the intensifying degradation, positively related to available phosphorus in the soil and negatively related to the aboveground phosphorus of Carex filispica. 2) Carex filispica and Polygonum viviparum are similar in specific leaf area and specific root area, yet different in the phosphorus content. The available phosphorus in the soil was negatively related to the aboveground phosphorus of Carex filispica and positively related to that of Polygonum viviparum. 3) When lightly degraded, the proportion of dauciform roots had positive effects on the aboveground resource-acquiring traits of Polygonum viviparum, which were no longer significant at heavy degradation. 4) Polygonum viviparum and Carex filispica without dauciform roots have similar performance: a decrease of belowground carbon with the increasing degradation, and a trend toward resource conservation with the increasing proportion of dauciform roots, which did not exist in Carex filispica with dauciform roots. Conclusion Our study found that dauciform roots had a beneficial effect on the resource acquisition of their neighbouring plants. However, due to the uncontrollable nature of natural habitats, whether this effect is stable and strong enough to be performed in ecological restoration requires further lab-controlled studies.
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Affiliation(s)
| | | | | | | | - Wenli Ji
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shaanxi, China
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Fan R, Hua J, Jiang S, Wang X, Liu W, Ji W. Dauciform roots affect functional traits of Carex filispica under nitrogen and phosphorus fertilization in alpine meadow. Sci Rep 2023; 13:14195. [PMID: 37648691 PMCID: PMC10469187 DOI: 10.1038/s41598-023-40828-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 08/17/2023] [Indexed: 09/01/2023] Open
Abstract
Over recent decades, there has been a severe nitrogen-deposition in alpine meadows which often leads to phosphorus limitation of plant productivity. In these high-altitude localities, Cyperaceae have an increasing biomass while other functional groups decrease. Meanwhile, Cyperaceae are known to have the ability of producing dauciform roots, which are formed under phosphorus limitation, but in China, are only described in these high-altitude places. So, is the superiority of Cyperaceae and the formation of dauciform roots in high-altitude localities related to the accumulation of nitrogen? And is there a link between them? A Carex filispica dominated community in Baima Snow Mountain was selected and quantitative fertilization with four levels of nitrogen and three levels of phosphorus was performed. After 2 weeks, Carex filispica individuals with and without dauciform roots were separated and analyzed for their regular root properties, dauciform root properties, biomass and chemical traits of above- and belowground parts. The total cover of the community declined under phosphorus limitation with increasing nitrogen supply, while the relative cover difference of Carex filispica increased with increasing nitrogen supply and decreased with increasing phosphorus supply. Dauciform roots had a more significant response to nitrogen supply than to phosphorus supply and they were formed the most at a low supply of nitrogen. The biomass and root properties of individuals with dauciform roots were enhanced by nitrogen supply and inhibited by phosphorus supply, while those of individuals without dauciform roots were often enhanced by phosphorus supply. Individuals with and without dauciform roots showed two different mechanisms, and were limited by significantly different factors, which can explain the opposite performance of Cyperaceae after nitrogen and phosphorus supply in previous studies.
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Affiliation(s)
- Rong Fan
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Jinguo Hua
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Songlin Jiang
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Xiaoqi Wang
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Wanting Liu
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Wenli Ji
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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Plant microbiomes harbor potential to promote nutrient turnover in impoverished substrates of a Brazilian biodiversity hotspot. THE ISME JOURNAL 2023; 17:354-370. [PMID: 36536072 PMCID: PMC9938248 DOI: 10.1038/s41396-022-01345-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 11/14/2022] [Accepted: 11/17/2022] [Indexed: 12/24/2022]
Abstract
The substrates of the Brazilian campos rupestres, a grassland ecosystem, have extremely low concentrations of phosphorus and nitrogen, imposing restrictions to plant growth. Despite that, this ecosystem harbors almost 15% of the Brazilian plant diversity, raising the question of how plants acquire nutrients in such a harsh environment. Here, we set out to uncover the taxonomic profile, the compositional and functional differences and similarities, and the nutrient turnover potential of microbial communities associated with two plant species of the campos rupestres-dominant family Velloziaceae that grow over distinct substrates (soil and rock). Using amplicon sequencing data, we show that, despite the pronounced composition differentiation, the plant-associated soil and rock communities share a core of highly efficient colonizers that tend to be highly abundant and is enriched in 21 bacterial families. Functional investigation of metagenomes and 522 metagenome-assembled genomes revealed that the microorganisms found associated to plant roots are enriched in genes involved in organic compound intake, and phosphorus and nitrogen turnover. We show that potential for phosphorus transport, mineralization, and solubilization are mostly found within bacterial families of the shared microbiome, such as Xanthobacteraceae and Bryobacteraceae. We also detected the full repertoire of nitrogen cycle-related genes and discovered a lineage of Isosphaeraceae that acquired nitrogen-fixing potential via horizontal gene transfer and might be also involved in nitrification via a metabolic handoff association with Binataceae. We highlight that plant-associated microbial populations in the campos rupestres harbor a genetic repertoire with potential to increase nutrient availability and that the microbiomes of biodiversity hotspots can reveal novel mechanisms of nutrient turnover.
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Rios CO, Siqueira-Silva AI, Pereira EG. Revegetation of mining-impacted sites with a tropical native grass: Constraints of climate seasonality and trace-element accumulation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 326:116655. [PMID: 36368206 DOI: 10.1016/j.jenvman.2022.116655] [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: 05/25/2022] [Revised: 10/24/2022] [Accepted: 10/27/2022] [Indexed: 06/16/2023]
Abstract
The iron ore mining activity results in considerable waste production and impacts on surrounding ecosystems. Natural recovery of impacted areas is absent or occurs slowly, especially when associated with prolonged dry seasons in tropical regions. The objective of this work was to unveil the mechanisms of Paspalum densum (Poir.) grass to overcome the periods of seasonal drought and its metal accumulation in areas impacted by iron mining, a tailings storage facilities and surrounding ferruginous grassland in Brazil. Lower mortality was observed among individuals in the tailings storage facilities, with a 74.3% survival rate. In contrast, after the beginning of the dry season, all individuals died in the ferruginous grassland. The plants in the tailings deposits showed better nutrition, with a higher concentration of P, Cu, Fe, Zn, Mn and greater capacity to accumulate Pb and Cd over time. Pb was the element with highest bioconcetration factor (BCF) and bioaccumulation coefficient (BAC), while Mn was the one with the highest translocation factor (TF). The dry season resulted in reduced chlorophyll a, b and total and effective quantum yield of photosystem II (PSII) of P. densum individuals. However, the plants in the tailings storage facilities showed adjustments to overcome the effects of drought, with an increase in the concentration of proline in leaves and reduction of oxidative damage (MDA and H2O2) at the end of the dry season. The grass P. densum showed rapid acclimatization in the tailings storage facilities and resistance to drought through antioxidant and photosynthetic adjustments and was still able to bioaccumulate and translocate in plant tissues some metals present in the iron ore impacted sites.
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Affiliation(s)
- Camilla Oliveira Rios
- Gradute Program in Management and Conservation of Natural and Agricultural Ecosystems, Federal University of Viçosa (UFV), Campus Florestal, 35690-000, Florestal, Minas Gerais, Brazil; Graduate Program in Plant Biology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | | | - Eduardo Gusmão Pereira
- Institute of Biological and Health Sciences, Federal University of Viçosa (UFV), Campus Florestal, 35690-000, Florestal, Minas Gerais, Brazil.
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Almeida LDAS, Santana DGDE, Guimarães EC. Spatial characterization of factors inherent in the microendemism of the dwarf pequi tree (Caryocar brasiliense subsp. intermedium (Wittm.) PRANCE & M. F. Silva). AN ACAD BRAS CIENC 2023; 95:e20220128. [PMID: 37075351 DOI: 10.1590/0001-3765202320220128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 07/28/2022] [Indexed: 04/21/2023] Open
Abstract
The dwarf pequi tree, Caryocar brasiliense subsp. intermedium, is extremely restricted to ecological niches in the Cerrado biome. Thus, understanding the conditioning factors of the micro-endemism of this sub-species through its spatial distribution and the physical-chemical attributes of the soil was the objective of this research. The research was carried out in a fragment of rupestrian field. The area was divided into quadrants in which the number of pequi trees was quantified and the physicochemical characteristics of the soil were determined. The modeling of semivariograms was performed using semivariances, and ordinary kriging was used for spatial interpolation of variables with spatial dependence. The number of pequi trees, the altitude, the remaining phosphorus and the humidity showed a strong degree of spatial dependence, unlike the pH, the calcium and the magnesium, all of which had a pure nugget effect. The other variables showed a moderate degree of spatial dependence. The greater availability of bases (SB > 0.1 cmolc dm-3) and phosphorus (> 1.05 mg dm-3), the reduced percentage of moisture (< 5%) and low potential acidity (< 4.0 cmolc dm-3) were the factors positively related to the establishment and development of the dwarf pequi tree in the area.
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Affiliation(s)
- Leandro DA Silva Almeida
- Universidade Federal de Uberlândia, Instituto de Ciências Agrárias, Bloco CCG, Sala 1C 206, Rodovia BR 050, Km 78, Campus Glória, 38410-337 Uberlândia, MG, Brazil
| | - Denise G DE Santana
- Universidade Federal de Uberlândia, Instituto de Ciências Agrárias, Bloco CCG, Sala 1C 206, Rodovia BR 050, Km 78, Campus Glória, 38410-337 Uberlândia, MG, Brazil
| | - Ednaldo C Guimarães
- Universidade Federal de Uberlândia, Faculdade de Matemática, Av. João Naves de Ávila, 2121, Bloco 1J, Sala 114, Campus Santa Mônica, 38408-144 Uberlândia, MG, Brazil
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Santos DGPOD, Corrêa LC, Silva JCRL, Gomes JAO, Semir J, Monge M, Ming LC, Martins ER, Zucchi MI, Hantao LW, Sawaya ACHF, Marques MOM. Lychnophora pinaster in endangered campos rupestres: phenolic compounds and population ecogeography. AN ACAD BRAS CIENC 2023; 95:e20201399. [PMID: 37132744 DOI: 10.1590/0001-3765202320201399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 08/08/2021] [Indexed: 05/04/2023] Open
Abstract
Lychnophora pinaster, known as arnica-mineira, is endemic to campos rupestres, at risk of extinction. The present study aimed to characterize the ecogeography and phenolic constituents of 11 L. pinaster populations collected in the mesoregions North, Jequitinhonha, Metropolitan of Belo Horizonte and Campos das Vertentes in the state of Minas Gerais, Brazil. Phenolic constituents were identified and quantified by Ultra-high performance liquid chromatography- mass spectrometry. Lychnophora pinaster occurs in sites at high altitude (700 and 1498 m), annual rainfall of up to 1455 m, soils with low fertility and predominantly loamy texture. Therefore, it can be considered tolerant to acidic soils, with low availability of nutrient. The most abundant substances in all populations were vitexin (18 - 1345 ng/g) and chlorogenic acid (60 - 767 ng/g). The 11 populations formed four groups in relation to the phenolic constituents, with group 1 consisting of the populations of the North Mesoregion (GM, OD) and Jetiquinhonha (DIMa), group 2, the Metropolitan of Belo Horizonte (SRM, NLSC, SM, RPS, CTRA), group 3, the North Mesoregion (ODMa and DI), and group 4, the Campos das Vertentes (CC). Among the populations, only those from the Metropolitan of Belo Horizonte showed correlation of soil properties with phenolic constituents.
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Affiliation(s)
- Dayane G P O Dos Santos
- Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, Departamento de Horticultura, Rua José Barbosa de Barros, 1780, 18610-307 Botucatu, SP, Brazil
- Centro de Pesquisa de Recursos Genéticos Vegetais, Instituto Agronômico, Av. da Barão de Itapura, 1481, Botafogo, 13020-902 Campinas, SP, Brazil
| | - Lilian C Corrêa
- Centro de Pesquisa de Recursos Genéticos Vegetais, Instituto Agronômico, Av. da Barão de Itapura, 1481, Botafogo, 13020-902 Campinas, SP, Brazil
| | - Júlio C R L Silva
- Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, Departamento de Horticultura, Rua José Barbosa de Barros, 1780, 18610-307 Botucatu, SP, Brazil
- Centro de Pesquisa de Recursos Genéticos Vegetais, Instituto Agronômico, Av. da Barão de Itapura, 1481, Botafogo, 13020-902 Campinas, SP, Brazil
| | - Jordany A O Gomes
- Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, Departamento de Horticultura, Rua José Barbosa de Barros, 1780, 18610-307 Botucatu, SP, Brazil
| | - João Semir
- Universidade Estadual de Campinas, Instituto de Biologia, Departamento de Botânica, Rua Monteiro Lobato, 255, Barão Geraldo, Caixa Postal: 6109, 13083-862 Campinas, SP, Brazil
| | - Marcelo Monge
- Universidade Estadual de Campinas, Instituto de Biologia, Departamento de Botânica, Rua Monteiro Lobato, 255, Barão Geraldo, Caixa Postal: 6109, 13083-862 Campinas, SP, Brazil
- Universidade Federal de Uberlândia, Instituto de Biologia, Rua Ceará, s/n, Bloco 2D, 38400-902 Uberlândia, MG, Brazil
| | - Lin C Ming
- Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, Departamento de Horticultura, Rua José Barbosa de Barros, 1780, 18610-307 Botucatu, SP, Brazil
| | - Ernane R Martins
- Universidade Federal de Minas Gerais, Instituto de Ciências Agrárias, Av. Universitária, 1000, Universitário, 39404-547 Montes Claros, MG, Brazil
| | - Maria I Zucchi
- Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de Desenvolvimento Tecnológico do Centro Sul, Caixa Postal 28, 13400-970 Piracicaba, SP, Brazil
| | - Leandro W Hantao
- Universidade Estadual de Campinas, Instituto de Química, Rua Monteiro Lobato, 270, 13083-970 Campinas, SP, Brazil
| | - Alexandra C H F Sawaya
- Universidade Estadual de Campinas, Faculdade de Ciências Farmacêuticas, Rua Cândido Portinari, 200, Cidade Universitária, 13083-871 Campinas, SP, Brazil
| | - Marcia Ortiz M Marques
- Centro de Pesquisa de Recursos Genéticos Vegetais, Instituto Agronômico, Av. da Barão de Itapura, 1481, Botafogo, 13020-902 Campinas, SP, Brazil
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Ning J, Liu S, Kamran M, Sun Y, Xu L, Wang H, Zhang M, Chang S, West CP, Hou F. Trace elements apportionment in forage, soil, and livestock in rangeland ecosystems along climatic gradients. ENVIRONMENTAL RESEARCH 2022; 215:114222. [PMID: 36049511 DOI: 10.1016/j.envres.2022.114222] [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: 05/17/2022] [Revised: 07/21/2022] [Accepted: 08/24/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Alpine meadows, typical steppes, and deserts are among the globally important rangeland types that are generally distributed along temperature and precipitation gradients. Mineral losses caused by grazing are one of the key factors that can lead to instability or even degradation of these rangeland ecosystems. METHODS We examined the concentrations of Cu, Fe, Mn, and Zn in soil, forage, and livestock dungs from diverse rangeland types in northwest China, to determine the relationships between these trace elements (TEs) concentrations and climatic factors (i.e., temperature, precipitation, and humidity), and to evaluate the potential risks of TEs deficiencies or excesses in these rangeland ecosystems. RESULTS Forage Zn concentrations in forage of all three types of rangeland, and Cu concentrations in forage of the alpine meadow did not meet the growth requirements of grazing livestock. Concentrations of Cu, Fe, and Mn in forage and Fe, Mn, and Zn in livestock dungs had quadratic parabola relationships with temperature, precipitation, and humidity, but the relationships between climate factors and Cu, Fe, and Mn concentrations in soil were not significant. In addition, the abilities of the plant to absorb Cu, Fe, and Zn from soil were stronger in the typical steppe than that in the alpine meadows and desert. Also, the abilities of livestock to return TEs to soil were stronger in the alpine meadow than that in the typical steppe and desert. CONCLUSION We derived a conceptual mode that the ratio of TE concentrations of the plant to soil and of livestock dung to forage represents the abilities of plants to absorb TEs from the soil matrix and livestock to return TEs to soil or to absorb TEs from forage, respectively. Results indicate potentially more serious risks of TEs deficiencies, especially that of Zn than previously considered in typical steppes and desert rangelands.
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Affiliation(s)
- Jiao Ning
- State Key Laboratory of Grassland Agro-Ecosystems, Ministry Lab, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, Gansu, 730020, China
| | - Shengsheng Liu
- State Key Laboratory of Grassland Agro-Ecosystems, Ministry Lab, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, Gansu, 730020, China
| | - Muhammad Kamran
- State Key Laboratory of Grassland Agro-Ecosystems, Ministry Lab, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, Gansu, 730020, China
| | - Yi Sun
- State Key Laboratory of Grassland Agro-Ecosystems, Ministry Lab, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, Gansu, 730020, China
| | - Lei Xu
- State Key Laboratory of Grassland Agro-Ecosystems, Ministry Lab, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, Gansu, 730020, China
| | - Hua Wang
- State Key Laboratory of Grassland Agro-Ecosystems, Ministry Lab, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, Gansu, 730020, China
| | - Minglei Zhang
- State Key Laboratory of Grassland Agro-Ecosystems, Ministry Lab, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, Gansu, 730020, China
| | - Shenghua Chang
- State Key Laboratory of Grassland Agro-Ecosystems, Ministry Lab, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, Gansu, 730020, China
| | - Charles P West
- Department of Plant and Soil Science, Texas Tech University, Lubbock, TX, 79409, USA
| | - Fujiang Hou
- State Key Laboratory of Grassland Agro-Ecosystems, Ministry Lab, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, Gansu, 730020, China.
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Tian Q, Lu P, Zhai X, Zhang R, Zheng Y, Wang H, Nie B, Bai W, Niu S, Shi P, Yang Y, Li K, Yang D, Stevens C, Lambers H, Zhang WH. An integrated belowground trait-based understanding of nitrogen-driven plant diversity loss. GLOBAL CHANGE BIOLOGY 2022; 28:3651-3664. [PMID: 35231142 DOI: 10.1111/gcb.16147] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 02/15/2022] [Indexed: 06/14/2023]
Abstract
Belowground plant traits play important roles in plant diversity loss driven by atmospheric nitrogen (N) deposition. However, the way N enrichment shapes plant microhabitats by patterning belowground traits and finally determines aboveground responses is poorly understood. Here, we investigated the rhizosheath trait of 74 plant species in seven N-addition simulation experiments across multiple grassland ecosystems in China. We found that rhizosheath formation differed among plant functional groups and contributed to changes in plant community composition induced by N enrichment. Compared with forb species, grass and sedge species exhibited distinct rhizosheaths; moreover, grasses and sedges expanded their rhizosheaths with increasing N-addition rate which allowed them to colonize belowground habitats. Grasses also shaped a different microenvironment around their roots compared with forbs by affecting the physicochemical, biological, and stress-avoiding properties of their rhizosphere soil. Rhizosheaths act as a "biofilm-like shield" by the accumulation of protective compounds, carboxylic anions and polysaccharides, determined by both plants and microorganisms. This enhanced the tolerance of grasses and sedges to stresses induced by N enrichment. Conversely, forbs lacked the protective rhizosheaths which renders their roots sensitive to stresses induced by N enrichment, thus contributing to their disappearance under N-enriched conditions. This study uncovers the processes by which belowground facilitation and trait matching affect aboveground responses under conditions of N enrichment, which advances our mechanistic understanding of the contribution of competitive exclusion and environmental tolerance to plant diversity loss caused by N deposition.
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Affiliation(s)
- Qiuying Tian
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China
| | - Peng Lu
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China
| | - Xiufeng Zhai
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Ruifang Zhang
- Mountain Area Research Institute, Agricultural University of Hebei, Baoding, China
| | - Yao Zheng
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Hong Wang
- Mountain Area Research Institute, Agricultural University of Hebei, Baoding, China
| | - Bao Nie
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China
| | - Wenming Bai
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China
| | - Shuli Niu
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
| | - Peili Shi
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
| | - Yuanhe Yang
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China
| | - Kaihui Li
- Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
| | - Dianlin Yang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China
| | - Carly Stevens
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | - Hans Lambers
- School of Biological Sciences and Institute of Agriculture, University of Western Australia, Perth, Western Australia, Australia
- National Academy for Green Agriculture, China Agricultural University, Beijing, China
| | - Wen-Hao Zhang
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
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Reichert T, Rammig A, Fuchslueger L, Lugli LF, Quesada CA, Fleischer K. Plant phosphorus-use and -acquisition strategies in Amazonia. THE NEW PHYTOLOGIST 2022; 234:1126-1143. [PMID: 35060130 DOI: 10.1111/nph.17985] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 12/20/2021] [Indexed: 06/14/2023]
Abstract
In the tropical rainforest of Amazonia, phosphorus (P) is one of the main nutrients controlling forest dynamics, but its effects on the future of the forest biomass carbon (C) storage under elevated atmospheric CO2 concentrations remain uncertain. Soils in vast areas of Amazonia are P-impoverished, and little is known about the variation or plasticity in plant P-use and -acquisition strategies across space and time, hampering the accuracy of projections in vegetation models. Here, we synthesize current knowledge of leaf P resorption, fine-root P foraging, arbuscular mycorrhizal symbioses, and root acid phosphatase and organic acid exudation and discuss how these strategies vary with soil P concentrations and in response to elevated atmospheric CO2 . We identify knowledge gaps and suggest ways forward to fill those gaps. Additionally, we propose a conceptual framework for the variations in plant P-use and -acquisition strategies along soil P gradients of Amazonia. We suggest that in soils with intermediate to high P concentrations, at the plant community level, investments are primarily directed to P foraging strategies via roots and arbuscular mycorrhizas, whereas in soils with intermediate to low P concentrations, investments shift to prioritize leaf P resorption and mining strategies via phosphatases and organic acids.
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Affiliation(s)
- Tatiana Reichert
- School of Life Sciences, Technical University of Munich, Freising, 85354, Germany
| | - Anja Rammig
- School of Life Sciences, Technical University of Munich, Freising, 85354, Germany
| | - Lucia Fuchslueger
- Centre of Microbiology and Environmental Systems Science, University of Vienna, Vienna, 1090, Austria
| | - Laynara F Lugli
- National Institute of Amazonian Research, Manaus, 69060-062, Brazil
| | - Carlos A Quesada
- National Institute of Amazonian Research, Manaus, 69060-062, Brazil
| | - Katrin Fleischer
- School of Life Sciences, Technical University of Munich, Freising, 85354, Germany
- Department Biogeochemical Signals, Max Planck Institute for Biogeochemistry, Jena, 07745, Germany
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11
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Wen Z, White PJ, Shen J, Lambers H. Linking root exudation to belowground economic traits for resource acquisition. THE NEW PHYTOLOGIST 2022; 233:1620-1635. [PMID: 34761404 DOI: 10.1111/nph.17854] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 11/04/2021] [Indexed: 06/13/2023]
Abstract
The concept of a root economics space (RES) is increasingly adopted to explore root trait variation and belowground resource-acquisition strategies. Much progress has been made on interactions of root morphology and mycorrhizal symbioses. However, root exudation, with a significant carbon (C) cost (c. 5-21% of total photosynthetically fixed C) to enhance resource acquisition, remains a missing link in this RES. Here, we argue that incorporating root exudation into the structure of RES is key to a holistic understanding of soil nutrient acquisition. We highlight the different functional roles of root exudates in soil phosphorus (P) and nitrogen (N) acquisition. Thereafter, we synthesize emerging evidence that illustrates how root exudation interacts with root morphology and mycorrhizal symbioses at the level of species and individual plant and argue contrasting patterns in species evolved in P-impoverished vs N-limited environments. Finally, we propose a new conceptual framework, integrating three groups of root functional traits to better capture the complexity of belowground resource-acquisition strategies. Such a deeper understanding of the integrated and dynamic interactions of root morphology, root exudation, and mycorrhizal symbioses will provide valuable insights into the mechanisms underlying species coexistence and how to explore belowground interactions for sustainable managed systems.
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Affiliation(s)
- Zhihui Wen
- College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, 100193, Beijing, China
| | - Philip J White
- Ecological Science Group, The James Hutton Institute, Invergowrie, Dundee, DD2 5DA, UK
| | - Jianbo Shen
- College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, 100193, Beijing, China
| | - Hans Lambers
- College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, 100193, Beijing, China
- School of Biological Sciences and Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley, Perth, WA, 6009, Australia
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12
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Llusià J, Asensio D, Sardans J, Filella I, Peguero G, Grau O, Ogaya R, Gargallo-Garriga A, Verryckt LT, Van Langenhove L, Brechet LM, Courtois E, Stahl C, Janssens IA, Peñuelas J. Contrasting nitrogen and phosphorus fertilization effects on soil terpene exchanges in a tropical forest. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 802:149769. [PMID: 34464786 DOI: 10.1016/j.scitotenv.2021.149769] [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: 05/13/2021] [Revised: 08/09/2021] [Accepted: 08/16/2021] [Indexed: 06/13/2023]
Abstract
Production, emission, and absorption of biogenic volatile organic compounds (BVOCs) in ecosystem soils and associated impacts of nutrient availability are unclear; thus, predictions of effects of global change on source-sink dynamic under increased atmospheric N deposition and nutrition imbalances are limited. Here, we report the dynamics of soil BVOCs under field conditions from two undisturbed tropical rainforests from French Guiana. We analyzed effects of experimental soil applications of nitrogen (N), phosphorus (P), and N + P on soil BVOC exchanges (in particular of total terpenes, monoterpenes, and sesquiterpenes), to determine source and sink dynamics between seasons (dry and wet) and elevations (upper and lower elevations corresponding to top of the hills (30 m high) and bottom of the valley). We identified 45 soil terpenoids compounds emitted to the atmosphere, comprising 26 monoterpenes and 19 sesquiterpenes; of these, it was possible to identify 13 and 7 compounds, respectively. Under ambient conditions, soils acted as sinks of these BVOCs, with greatest soil uptake recorded for sesquiterpenes at upper elevations during the wet season (-282 μg m-2 h-1). Fertilization shifted soils from a sink to source, with greatest levels of terpene emissions recorded at upper elevations during the wet season, following the addition of N (monoterpenes: 406 μg m-2 h-1) and P (sesquiterpenes: 210 μg m-2 h-1). Total soil terpene emission rates were negatively correlated with total atmospheric terpene concentrations. These results indicate likely shifts in tropical soils from sink to source of atmospheric terpenes under projected increases in N deposition under global change, with potential impacts on regional-scale atmospheric chemistry balance and ecosystem function.
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Affiliation(s)
- Joan Llusià
- CREAF, Campus Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona 08193, Catalonia, Spain; CSIC, Global Ecology Unit CREAF- CSIC-UAB, Bellaterra, Barcelona 08193, Catalonia, Spain.
| | - Dolores Asensio
- CREAF, Campus Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona 08193, Catalonia, Spain; CSIC, Global Ecology Unit CREAF- CSIC-UAB, Bellaterra, Barcelona 08193, Catalonia, Spain
| | - Jordi Sardans
- CREAF, Campus Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona 08193, Catalonia, Spain; CSIC, Global Ecology Unit CREAF- CSIC-UAB, Bellaterra, Barcelona 08193, Catalonia, Spain
| | - Iolanda Filella
- CREAF, Campus Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona 08193, Catalonia, Spain; CSIC, Global Ecology Unit CREAF- CSIC-UAB, Bellaterra, Barcelona 08193, Catalonia, Spain
| | - Guille Peguero
- CREAF, Campus Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona 08193, Catalonia, Spain; CSIC, Global Ecology Unit CREAF- CSIC-UAB, Bellaterra, Barcelona 08193, Catalonia, Spain
| | - Oriol Grau
- CREAF, Campus Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona 08193, Catalonia, Spain; CSIC, Global Ecology Unit CREAF- CSIC-UAB, Bellaterra, Barcelona 08193, Catalonia, Spain
| | - Romà Ogaya
- CREAF, Campus Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona 08193, Catalonia, Spain; CSIC, Global Ecology Unit CREAF- CSIC-UAB, Bellaterra, Barcelona 08193, Catalonia, Spain
| | - Albert Gargallo-Garriga
- CREAF, Campus Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona 08193, Catalonia, Spain; CSIC, Global Ecology Unit CREAF- CSIC-UAB, Bellaterra, Barcelona 08193, Catalonia, Spain
| | - Lore T Verryckt
- Department of Biology, Research Group PLECO (Plant and Ecosystems), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Leandro Van Langenhove
- Department of Biology, Research Group PLECO (Plant and Ecosystems), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Laëtitia M Brechet
- INRAE, UMR Ecology of Guiana Forests (Ecofog), AgroParisTech, Cirad, CNRS, Université des Antilles, Université de Guyane, 97387 Kourou, French Guiana; Center of Excellence Global Change Ecology, Department of Biology, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Elodie Courtois
- Laboratoire Ecologie, Evolution, interactions des systèmes amazoniens (LEEISA), Université de Guyane, CNRS, IFREMER, 97300 Cayenne, French Guiana
| | - Clément Stahl
- INRAE, UMR Ecology of Guiana Forests (Ecofog), AgroParisTech, Cirad, CNRS, Université des Antilles, Université de Guyane, 97387 Kourou, French Guiana
| | - Ivan A Janssens
- Department of Biology, Research Group PLECO (Plant and Ecosystems), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Josep Peñuelas
- CREAF, Campus Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona 08193, Catalonia, Spain; CSIC, Global Ecology Unit CREAF- CSIC-UAB, Bellaterra, Barcelona 08193, Catalonia, Spain
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13
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Fernandes-Filho EI, Gonçalves Reynaud Schaefer CE, Faria RM, Lopes A, Francelino MR, Gomes LC. The unique and endangered Campo Rupestre vegetation and protected areas in the Iron Quadrangle, Minas Gerais, Brazil. J Nat Conserv 2022. [DOI: 10.1016/j.jnc.2022.126131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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14
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Urbina I, Grau O, Sardans J, Margalef O, Peguero G, Asensio D, LLusià J, Ogaya R, Gargallo‐Garriga A, Van Langenhove L, Verryckt LT, Courtois EA, Stahl C, Soong JL, Chave J, Hérault B, Janssens IA, Sayer E, Peñuelas J. High foliar K and P resorption efficiencies in old-growth tropical forests growing on nutrient-poor soils. Ecol Evol 2021; 11:8969-8982. [PMID: 34257939 PMCID: PMC8258221 DOI: 10.1002/ece3.7734] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 03/04/2021] [Accepted: 05/15/2021] [Indexed: 11/11/2022] Open
Abstract
Resorption is the active withdrawal of nutrients before leaf abscission. This mechanism represents an important strategy to maintain efficient nutrient cycling; however, resorption is poorly characterized in old-growth tropical forests growing in nutrient-poor soils. We investigated nutrient resorption from leaves in 39 tree species in two tropical forests on the Guiana Shield, French Guiana, to investigate whether resorption efficiencies varied with soil nutrient, seasonality, and species traits. The stocks of P in leaves, litter, and soil were low at both sites, indicating potential P limitation of the forests. Accordingly, mean resorption efficiencies were higher for P (35.9%) and potassium (K; 44.6%) than for nitrogen (N; 10.3%). K resorption was higher in the wet (70.2%) than in the dry (41.7%) season. P resorption increased slightly with decreasing total soil P; and N and P resorptions were positively related to their foliar concentrations. We conclude that nutrient resorption is a key plant nutrition strategy in these old-growth tropical forests, that trees with high foliar nutrient concentration reabsorb more nutrient, and that nutrients resorption in leaves, except P, are quite decoupled from nutrients in the soil. Seasonality and biochemical limitation played a role in the resorption of nutrients in leaves, but species-specific requirements obscured general tendencies at stand and ecosystem level.
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Affiliation(s)
- Ifigenia Urbina
- CREAFCentre de Recerca Ecològica i Aplicacions ForestalsBellaterraSpain
- Consejo Superior de Investigaciones CientíficasGlobal Ecology UnitUniversidad Autònoma de BarcelonaBellaterraSpain
| | - Oriol Grau
- CREAFCentre de Recerca Ecològica i Aplicacions ForestalsBellaterraSpain
- Consejo Superior de Investigaciones CientíficasGlobal Ecology UnitUniversidad Autònoma de BarcelonaBellaterraSpain
- CIRADUMR EcoFoG (AgroParisTech, CNRS, INRA, Univ Antilles, Univ. Guyane)KourouFrench Guiana
| | - Jordi Sardans
- CREAFCentre de Recerca Ecològica i Aplicacions ForestalsBellaterraSpain
- Consejo Superior de Investigaciones CientíficasGlobal Ecology UnitUniversidad Autònoma de BarcelonaBellaterraSpain
| | - Olga Margalef
- CREAFCentre de Recerca Ecològica i Aplicacions ForestalsBellaterraSpain
- Consejo Superior de Investigaciones CientíficasGlobal Ecology UnitUniversidad Autònoma de BarcelonaBellaterraSpain
| | - Guillermo Peguero
- CREAFCentre de Recerca Ecològica i Aplicacions ForestalsBellaterraSpain
- Consejo Superior de Investigaciones CientíficasGlobal Ecology UnitUniversidad Autònoma de BarcelonaBellaterraSpain
| | - Dolores Asensio
- CREAFCentre de Recerca Ecològica i Aplicacions ForestalsBellaterraSpain
- Consejo Superior de Investigaciones CientíficasGlobal Ecology UnitUniversidad Autònoma de BarcelonaBellaterraSpain
| | - Joan LLusià
- CREAFCentre de Recerca Ecològica i Aplicacions ForestalsBellaterraSpain
- Consejo Superior de Investigaciones CientíficasGlobal Ecology UnitUniversidad Autònoma de BarcelonaBellaterraSpain
| | - Romà Ogaya
- CREAFCentre de Recerca Ecològica i Aplicacions ForestalsBellaterraSpain
- Consejo Superior de Investigaciones CientíficasGlobal Ecology UnitUniversidad Autònoma de BarcelonaBellaterraSpain
| | - Albert Gargallo‐Garriga
- CREAFCentre de Recerca Ecològica i Aplicacions ForestalsBellaterraSpain
- Consejo Superior de Investigaciones CientíficasGlobal Ecology UnitUniversidad Autònoma de BarcelonaBellaterraSpain
| | - Leandro Van Langenhove
- Department of BiologyCentre of Excellence PLECO (Plants and Ecosystems)University of AntwerpWilrijkBelgium
| | - Lore T. Verryckt
- Department of BiologyCentre of Excellence PLECO (Plants and Ecosystems)University of AntwerpWilrijkBelgium
| | - Elodie A. Courtois
- CIRADUMR EcoFoG (AgroParisTech, CNRS, INRA, Univ Antilles, Univ. Guyane)KourouFrench Guiana
| | - Clément Stahl
- CIRADUMR EcoFoG (AgroParisTech, CNRS, INRA, Univ Antilles, Univ. Guyane)KourouFrench Guiana
| | - Jennifer L. Soong
- Climate and Ecosystem Science DivisionLawrence Berkeley National LaboratoryBerkeleyCAUSA
| | - Jerome Chave
- Laboratoire Evolution et Diversité BiologiqueUMR5174CNRS–Université Paul Sabatier–IRDToulouse cedex 9France
| | - Bruno Hérault
- Cirad, UR Forêts & SociétésUniversité de MontpellierMontpellierFrance
- Institut National Polytechnique Félix Houphouët‐Boigny (INP‐HB)YamoussoukroIvory Coast
| | - Ivan A. Janssens
- Department of BiologyCentre of Excellence PLECO (Plants and Ecosystems)University of AntwerpWilrijkBelgium
| | - Emma Sayer
- Lancaster Environment CentreLancaster UniversityLancasterUK
- Smithsonian Tropical Research InstitutePanamaRepublic of Panama
| | - Josep Peñuelas
- CREAFCentre de Recerca Ecològica i Aplicacions ForestalsBellaterraSpain
- Consejo Superior de Investigaciones CientíficasGlobal Ecology UnitUniversidad Autònoma de BarcelonaBellaterraSpain
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15
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Campos PV, Schaefer CEGR, Pontara V, Senra EO, Viana PL, Oliveira FS, Candido HG, Villa PM. Exploring the relationship between soil and plant evolutionary diversity in the Roraima table mountain OCBIL, Guayana Highlands. Biol J Linn Soc Lond 2021. [DOI: 10.1093/biolinnean/blab013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
OCBIL theory aims to develop hypotheses that explain the evolutionary ecology of biota on old, climatically buffered, infertile landscapes (OCBILs). The table mountain OCBILs of the Guayana Highlands are a major centre of Neotropical plant diversity; however, knowledge about the underlying mechanisms of plant community assembly at the mountaintops is still limited. We evaluated the effect of a fine-scale geoenvironmental gradient on the phylogenetic metrics of plant communities on the iconic, highly isolated Roraima table mountain of the Guayana Highlands. We selected three specific geoenvironments: Bonnetia-shrubby rupestrian grassland, peaty rupestrian grassland and sandy rupestrian grassland. We evaluated evolutionary history using species richness and phylogenetic metrics and analysed effects of the soil on phylogenetic metrics using linear models. Of the 55 species surveyed, 40% are endemic to the Guayana Highlands. Bonnetia-shrubby rupestrian grassland showed higher species richness (47) than peaty rupestrian grassland (30) and sandy rupestrian grassland (24). We observed significant differences in phylogenetic diversity and structure among geoenvironments. The highest phylogenetic diversity was found for Bonnetia-shrubby rupestrian grassland and sandy rupestrian grassland. Peaty rupestrian grassland had significantly lower mean pairwise phylogenetic distance and all standardized phylogenetic metrics. The values of standardized phylogenetic metrics were close to zero, suggesting random phylogenetic structure. The linear models revealed that soil texture explained most of the variation in phylogenetic metrics. Our results might be related to the long geological history of tepuis and the accumulation of lineages over tens of millions of years, which supports the OCBIL theory.
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Affiliation(s)
- Prímula Viana Campos
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | | | - Vanessa Pontara
- Laboratório de Macroecologia e Evolução, Universidade Estadual de Mato Grosso do Sul, Mundo Novo, MS, Brazil
| | | | - Pedro Lage Viana
- Coordenação de Botânica, Museu Paraense Emílio Goeldi, Belém, PA, Brazil
| | - Fábio Soares Oliveira
- Departamento de Geografia/Instituto de Geociências, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Pedro Manuel Villa
- Departamento de Engenharia Florestal, Universidade Federal de Viçosa, Viçosa, MG, Brazil
- Fundación para la Conservación de la Biodiversidad, Mérida, Venezuela
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16
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Cabral A, Luebert F, Mello-Silva R. Evidence for Middle Miocene origin and morphological evolutionary stasis in a Barbacenia Inselberg clade (Velloziaceae). Mol Phylogenet Evol 2021; 161:107163. [PMID: 33831546 DOI: 10.1016/j.ympev.2021.107163] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 01/20/2021] [Accepted: 03/23/2021] [Indexed: 11/16/2022]
Abstract
Atlantic Forest Inselbergs (AFI) and Campos Rupestres (CR) are mountains and highlands of eastern South America, relatively poorly studied and highly threatened, which display extraordinary levels of plant endemism and richness. In spite of their geographical and environmental differences, the origin of the flora of CR and AFI are likely linked to each other, because several plant clades are distributed across both ecosystems. In addition to these studies, little has been investigated about the historical biogeographical connections between AFI and CR and most evolutionary studies are restricted to CR. Barbacenia (Velloziaceae) is widely spread and nearly endemic to the AFI and CR outcrops and thus represent an ideal system to study the biogeographical connections between CR and AFI. Besides, given the remarkable diversity of Barbacenia in CR compared to AFI, it appears that different factors were important drivers in the diversification of Barbacenia lineages, likely leading to different patterns of morphological diversification. Here, we integrate phylogenetic, biogeographic and morphological approaches to: (i) address whether AFI species of Barbacenia are monophyletic and thus a single colonization of AFI can be inferred; (ii) understand the timing and geographical origin of CR and AFI clades; (iii) compare morphological diversity between Barbacenia from AFI and CR under the hypothesis that these two systems have experienced similar levels of morphological diversification during their evolutionary history. To this end, we presented a phylogeny inferred using plastid (atpB-rbcL, trnH-psbA and trnL-trnF) and nuclear (ITS) markers and a complete sampling of AFI Barbacenia, estimated divergence times, reconstructed the ancestral areas of Barbacenia clades and compared their morphological diversity based on a dataset of 16 characters. Our results provided evidence for a diversification of Barbacenia from the Middle Miocene to Pleistocene, as suggested in previous studies. We suggest that stepping-stone dispersal across mountaintops in interplay with paleovegetation dynamics during the global Miocene cooling and Pleistocene climatic oscillations may played an important role in the range expansion of modern AFI Barbacenia lineages. Finally, our results also showed a significant differences in morphological diversity between AFI and CR clades, suggesting a long-term morphological stasis in AFI species.
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Affiliation(s)
- Andressa Cabral
- Universidade de São Paulo, Departamento de Botânica, São Paulo, SP, Brazil.
| | - Federico Luebert
- Nees-Institut für Biodiversität der Pflanzen, Universität Bonn, Bonn, Germany; Departamento de Silvicultura y Conservación de la Naturaleza, Universidad de Chile, Santiago, Chile
| | - Renato Mello-Silva
- Universidade de São Paulo, Departamento de Botânica, São Paulo, SP, Brazil
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17
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Rodrigues Pinto JR, Reis R. dos Santos T, Moser P. The type of substrate does not influence the intraspecific population structure of shrub‐tree species in the Brazilian savanna. Ecol Res 2021. [DOI: 10.1111/1440-1703.12218] [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)
| | - Tassiana Reis R. dos Santos
- Programa de Pós‐Graduação em Botânica Universidade de Brasília Brasília Brazil
- Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso Barra do Garças Brazil
| | - Pamela Moser
- Programa de Pós‐Graduação em Ecologia Universidade de Brasília Brasília Brazil
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18
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Hopper SD, Lambers H, Silveira FAO, Fiedler PL. OCBIL theory examined: reassessing evolution, ecology and conservation in the world’s ancient, climatically buffered and infertile landscapes. Biol J Linn Soc Lond 2021. [DOI: 10.1093/biolinnean/blaa213] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Abstract
OCBIL theory was introduced as a contribution towards understanding the evolution, ecology and conservation of the biological and cultural diversity of old, climatically buffered, infertile landscapes (OCBILs), especially in the Southern Hemisphere. The theory addresses some of the most intransigent environmental and cultural trends of our time – the ongoing decline of biodiversity and cultural diversity of First Nations. Here we reflect on OCBILs, the origins of the theory, and its principal hypotheses in biological, anthropological and conservation applications. The discovery that threatened plant species are concentrated in the Southwest Australian Floristic Region (SWAFR) on infertile, phosphorous-impoverished uplands within 500 km of the coast formed the foundational framework for OCBIL theory and led to the development of testable hypotheses that a growing literature is addressing. Currently, OCBILs are recognized in 15 Global Biodiversity Hotspots and eight other regions. The SWAFR, Greater Cape Floristic Region of South Africa and South America’s campos rupestres (montane grasslands) are those regions that have most comprehensively been investigated in the context of OCBIL theory. We summarize 12 evolutionary, ecological and cultural hypotheses and ten conservation-management hypotheses being investigated as recent contributions to the OCBIL literature.
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Affiliation(s)
- Stephen D Hopper
- Centre of Excellence in Natural Resource Management, School of Agriculture & Environment, The University of Western Australia, Albany, WA, Australia
| | - Hans Lambers
- School of Biological Sciences, The University of Western Australia, Crawley (Perth), WA, Australia
| | - Fernando A O Silveira
- Departmento de Genética, Ecologia e Evolução, Universidade Federal de Minas Gerais, Av. Antônio Carlos, Belo Horizonte, MG, Brazil
| | - Peggy L Fiedler
- Natural Reserve System, University of California, Office of the President, Oakland, CA, USA
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19
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Silva LCD, Moreira MP, Silveira AADC, Sibov ST. Influence of macronutrients, sucrose and LED on in vitro culture of Lomatozona artemisiifolia (Asteraceae - Eupatorieae). RODRIGUÉSIA 2021. [DOI: 10.1590/2175-7860202172054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Abstract Balanced levels of macronutrients and sucrose may ensure the success of micropropagation of the endangered ones. This study aimed to evaluate the effect of levels of salts in the culture medium on in vitro culture of Lomatozona artemisiifolia, as well as to determine the influence of light emitting diode (LED) on the shoot proliferation and rooting of the species. Nodal segments were used to evaluate the different macronutrient concentrations of MS medium (25, 50 and 100%), as well as sucrose concentrations (0.0 mM; 0.34 mM; 0.68 mM and 1.03 mM). Five light conditions were evaluated at shoots proliferation and rooting [100% blue (455 nm); 100% red (630 nm); 30% blue + 70% red; 30% red + 70% blue or fluorescent white]. Low levels of macronutrients in MS (50% and 25%) and sucrose (0.00 mM and 0.34 mM) resulted in plants with higher height, number of shoots and higher production of photosynthetic pigments. The 100% red light promoted rooting of 100% of the plants, and in 100% red or 70% red + 30% blue, higher plants were observed. These results demonstrate that under in vitro conditions, L. artemisiifolia has low nutritional needs, typical of plants that live in rupestrian fields.
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20
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Kong D, Wang J, Valverde-Barrantes OJ, Kardol P. A framework to assess the carbon supply-consumption balance in plant roots. THE NEW PHYTOLOGIST 2021; 229:659-664. [PMID: 32654148 DOI: 10.1111/nph.16807] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 07/06/2020] [Indexed: 06/11/2023]
Affiliation(s)
- Deliang Kong
- College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
- Liaoning Key Laboratory for Biological Invasions and Global Change, Shenyang Agricultural University, Shenyang, Liaoning, 110866, China
| | - Junjian Wang
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | | | - Paul Kardol
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, 90183, Sweden
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21
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Rapini A, Bitencourt C, Luebert F, Cardoso D. An escape-to-radiate model for explaining the high plant diversity and endemism in campos rupestres†. Biol J Linn Soc Lond 2020. [DOI: 10.1093/biolinnean/blaa179] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
With extraordinary levels of plant diversity and endemism, the Brazilian campos rupestres across the Espinhaço Range have a species/area ratio 40 times higher than the lowland Amazon. Although diversification drivers in campos rupestres remain a matter of debate, the Pleistocene refugium hypothesis (PRH) is often adopted as the most plausible explanation for their high diversity. The PRH has two main postulates: highland interglacial refugia and a species pump mechanism catalysed by climatic changes. We critically assessed studies on campos rupestres diversification at different evolutionary levels and conclude that most of them are affected by sampling biases, unrealistic assumptions or inaccurate results that do not support the PRH. By modelling the palaeo-range of campos rupestres based on the distribution of 1123 species of vascular plants endemic to the Espinhaço Range and using climate and edaphic variables, we projected a virtually constant suitable area for campos rupestres across the last glacial cycle. We challenge the great importance placed on Pleistocene climatic oscillations in campos rupestres plant diversification and offer an alternative explanation named escape-to-radiate model, which emphasizes niche shifts. Under this biogeographic model of diversification, the long-term fragmentation of campos rupestres combined with recurrent extinctions after genetic drift and sporadic events of adaptive radiation may provide an explanation for the current diversity and endemism in the Espinhaço Range. We conclude that long-term diversification dynamics in campos rupestres are mainly driven by selection, while most endemic diversity is ephemeral, extremely fragile and mainly driven by drift.
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Affiliation(s)
- Alessandro Rapini
- Programa de Pós-graduação em Botânica, Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Av. Transnordestina s.n., Novo Horizonte, Feira de Santana, Bahia, Brazil
| | - Cássia Bitencourt
- Programa de Pós-graduação em Botânica, Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Av. Transnordestina s.n., Novo Horizonte, Feira de Santana, Bahia, Brazil
| | - Federico Luebert
- Departmento de Silvicultura y Conservación de la Naturaleza, Universidad de Chile, Santa Rosa 11315, La Pintana, Santiago, Chile
| | - Domingos Cardoso
- Programa de Pós-graduação em Botânica, Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Av. Transnordestina s.n., Novo Horizonte, Feira de Santana, Bahia, Brazil
- National Institute of Science and Technology in Interdisciplinary and Transdisciplinary Studies in Ecology and Evolution (INCT IN-TREE), Instituto de Biologia, Universidade Federal da Bahia, Rua Barão de Jeremoabo, s.n., Ondina, Salvador, Bahia, Brazil
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22
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Miola DTB, Ramos VDV, Silveira FAO. A brief history of research in campo rupestre: identifying research priorities and revisiting the geographical distribution of an ancient, widespread Neotropical biome. Biol J Linn Soc Lond 2020. [DOI: 10.1093/biolinnean/blaa175] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Few ecologists and evolutionary biologists are familiar with the ecology and evolution of the campo rupestre, an ancient azonal peinobiome characterized by a fire-prone, nutrient-impoverished, montane vegetation mosaic, home to thousands of endemics and climate refugia. With the goal of providing a synthetic view of the campo rupestre, we provide a brief historical account of the biological research, revisit its geographical distribution and identify knowledge gaps. The azonal campo rupestre is distributed as isolated and naturally fragmented sky islands, mostly in Central and Eastern Brazil and in the Guyana Shield, with significant areas across the Amazon, Cerrado, Atlantic Forest, Caatinga and Pantanal. Our proposal to elevate campo rupestre to the level of biome is expected to improve communication among scientists and consolidate the use of the term campo rupestre in the ecological and evolutionary literature, as is the case for analogous ecosystems, such as kwongan, fynbos, páramos and tepuis. Based on the identification of knowledge gaps, we propose a research programme comprising ten key topics that can foster our understanding of the ecology and evolution of campo rupestre and, potentially, support conservation strategies.
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Affiliation(s)
- Deise T B Miola
- Rua Itaúna 35, Lj 3. Pará de Minas, Minas Gerais, Brazil
- Departamento de Genética, Ecologia e Evolução, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - Fernando A O Silveira
- Departamento de Genética, Ecologia e Evolução, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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23
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Caminha-Paiva D, Negreiros D, Barbosa M, Fernandes GW. Functional trait coordination in the ancient and nutrient-impoverished campo rupestre: soil properties drive stem, leaf and architectural traits. Biol J Linn Soc Lond 2020. [DOI: 10.1093/biolinnean/blaa153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Old, climatically buffered and infertile landscapes (OCBILs) are remarkably species-diverse, but the assembly of their ecological communities is largely unknown. Our goal was to understand how edaphic filters drive the functional structure of plant communities in an ancient and nutrient-impoverished ecosystem. We carried out a functional screening across four types of campo rupestre habitats with different edaphic conditions. We investigated trait–soil relationships for ironstone and quartzitic substrate to obtain the optimal trait values of each condition. In addition, we built unipartite networks to explore trait–trait relationships to assess functional coordination among organs. Lower soil pH and less soil water retention potential increased the proportion of smaller leaves, tissue dry mass and tissue density, resulting in more resource-conservative plant species and communities. Trait functions were tightly correlated among organs at both the plot and the individual level, indicating a trend of phenotypic integration. Architectural traits were central to coordination, suggesting their key role in integrating sap transport, mechanical support and leaf display. We conclude that the trait adjustments in response to soil parameters are important for the coexistence of a large number of species in the campo rupestre ecosystem.
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Affiliation(s)
- Dario Caminha-Paiva
- Ecologia Evolutiva & Biodiversidade/Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Daniel Negreiros
- Instituto de Ciências Biológicas e Saúde, Centro Universitário UNA, Belo Horizonte, MG, Brazil
| | - Milton Barbosa
- Ecologia Evolutiva & Biodiversidade/Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - G Wilson Fernandes
- Ecologia Evolutiva & Biodiversidade/Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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24
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Valverde-Barrantes OJ, Maherali H, Baraloto C, Blackwood CB. Independent evolutionary changes in fine-root traits among main clades during the diversification of seed plants. THE NEW PHYTOLOGIST 2020; 228:541-553. [PMID: 32535912 DOI: 10.1111/nph.16729] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 05/19/2020] [Indexed: 06/11/2023]
Abstract
Changes in fine-root morphology are typically associated with transitions from the ancestral arbuscular mycorrhizal (AM) to the alternative ectomycorrhizal (ECM) or nonmycorrhizal (NM) associations. However, the modifications in root morphology may also coincide with new modifications in leaf hydraulics and growth habit during angiosperm diversification. These hypotheses have not been evaluated concurrently, and this limits our understanding of the causes of fine-root evolution. To explore the evolution of fine-root systems, we assembled a 600+ species database to reconstruct historical changes in seed plants over time. We utilise ancestral reconstruction approaches together with phylogenetically informed comparative analyses to test whether changes in fine-root traits were most strongly associated with mycorrhizal affiliation, leaf hydraulics or growth form. Our findings showed significant shifts in root diameter, specific root length and root tissue density as angiosperms diversified, largely independent from leaf changes or mycorrhizal affiliation. Growth form was the only factor associated with fine-root traits in statistical models including mycorrhizal association and leaf venation, suggesting substantial modifications in fine-root morphology during transitions from woody to nonwoody habits. Divergences in fine-root systems were crucial in the evolution of seed plant lineages, with important implications for ecological processes in terrestrial ecosystems.
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Affiliation(s)
- Oscar J Valverde-Barrantes
- International Center for Tropical Biodiversity, Department of Biological Sciences, Florida International University, Miami, FL, 33199, USA
| | - Hafiz Maherali
- Department of Integrative Biology, University of Guelph, 50 Stone Road East, Guelph, ON, N1G 2W1, Canada
| | - Christopher Baraloto
- International Center for Tropical Biodiversity, Department of Biological Sciences, Florida International University, Miami, FL, 33199, USA
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25
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Lullfitz A, Pettersen C, Reynolds R(D, Eades A, Dean A, Knapp L, Woods E, Woods T, Eades E, Yorkshire-Selby G, Woods S, Dortch J, Guilfoyle D, Hopper SD. The Noongar of south-western Australia: a case study of long-term biodiversity conservation in a matrix of old and young landscapes. Biol J Linn Soc Lond 2020. [DOI: 10.1093/biolinnean/blaa097] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Occurring across all southern hemisphere continents except Antarctica, old, climatically buffered, infertile landscapes (OCBILs) are centres of biological richness, often in biodiversity hotspots. Among a matrix of young, often disturbed, fertile landscapes (YODFELs), OCBILs are centres of endemism and diversity in the exceptionally rich flora of the south-west Australian global biodiversity hotspot, home to Noongar peoples for ≥ 48 000 years. We analysed contemporary traditional Noongar knowledge of adjacent OCBILs (e.g. granite outcrops) and YODFELs (e.g. creekline fringes) both at a single site and in two larger areas to test whether patterns of disturbance dictated by Noongar custom align with OCBIL theory. We found that Noongar traditional knowledge reflects a regime of concentrated YODFEL rather than OCBIL disturbance—a pattern which aligns with maximal biodiversity preservation. SIMPER testing found traditional Noongar OCBIL and YODFEL activities are 64–75% dissimilar, whereas Pearson’s chi-square tests revealed camping, burning, travelling through country and hunting as primarily YODFEL rather than OCBIL activities. We found that Noongar activities usually avoid OCBIL disturbance. This combined with high floristic diversity following enduring First Peoples’ presence, suggests that traditional Noongar knowledge is valuable and necessary for south-west Australian biodiversity conservation. Similar cultural investigations in other OCBIL-dominated global biodiversity hotspots may prove profitable.
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Affiliation(s)
- Alison Lullfitz
- Centre of Excellence in Natural Resource Management, School of Agriculture and Environment, University of Western Australia, Albany, WA, Australia
| | - Carol Pettersen
- Centre of Excellence in Natural Resource Management, School of Agriculture and Environment, University of Western Australia, Albany, WA, Australia
| | - Ron (Doc) Reynolds
- Esperance Tjaltjraak Native Title Aboriginal Corporation, Esperance, WA, Australia
| | - Aden Eades
- Centre of Excellence in Natural Resource Management, School of Agriculture and Environment, University of Western Australia, Albany, WA, Australia
| | - Averil Dean
- Centre of Excellence in Natural Resource Management, School of Agriculture and Environment, University of Western Australia, Albany, WA, Australia
| | - Lynette Knapp
- Centre of Excellence in Natural Resource Management, School of Agriculture and Environment, University of Western Australia, Albany, WA, Australia
| | - Eliza Woods
- Centre of Excellence in Natural Resource Management, School of Agriculture and Environment, University of Western Australia, Albany, WA, Australia
| | - Treasy Woods
- Centre of Excellence in Natural Resource Management, School of Agriculture and Environment, University of Western Australia, Albany, WA, Australia
| | - Eugene Eades
- Centre of Excellence in Natural Resource Management, School of Agriculture and Environment, University of Western Australia, Albany, WA, Australia
| | - Gail Yorkshire-Selby
- Esperance Tjaltjraak Native Title Aboriginal Corporation, Esperance, WA, Australia
| | - Steven Woods
- Centre of Excellence in Natural Resource Management, School of Agriculture and Environment, University of Western Australia, Albany, WA, Australia
| | - Joe Dortch
- Centre for Rock Art Research and Management, University of Western Australia, Perth, WA, Australia
| | | | - Stephen D Hopper
- Centre of Excellence in Natural Resource Management, School of Agriculture and Environment, University of Western Australia, Albany, WA, Australia
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26
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Cary KL, Ranieri GM, Pittermann J. Xylem form and function under extreme nutrient limitation: an example from California's pygmy forest. THE NEW PHYTOLOGIST 2020; 226:760-769. [PMID: 31900931 DOI: 10.1111/nph.16405] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 12/19/2019] [Indexed: 06/10/2023]
Abstract
Xylem anatomy and function have large implications for plant growth as well as survival during drought, but the impact of nutrient limitation on xylem is not fully understood. This study examines the pygmy forest in California, a plant community that experiences negligible water stress but is severely stunted by low-nutrient and acidic soil, to investigate how nutrient limitation affects xylem function. Thirteen key anatomical and hydraulic traits of stems of four species were compared between pygmy forest plants and nearby conspecifics growing on richer soil. Resistance to cavitation (P50 ), a critical trait for predicting survival during drought, had highly species-specific responses: in one species, pygmy plants had a 26% decrease in cavitation resistance compared to higher-nutrient conspecifics, while in another species, pygmy plants had a 56% increase in cavitation resistance. Other traits responded to nutrient limitation more consistently: pygmy plants had smaller xylem conduits and higher leaf-specific conductivity (KL ) than conspecific controls. Edaphic stress, even in the absence of water stress, altered xylem structure and thus had substantial impacts on water transport. Importantly, nutrient limitation shifted cavitation resistance in a species-specific and unpredictable manner; this finding has implications for the assessment of cavitation resistance in other natural systems.
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Affiliation(s)
- Katharine L Cary
- University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA, 95064, USA
| | - Gina M Ranieri
- University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA, 95064, USA
| | - Jarmila Pittermann
- University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA, 95064, USA
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27
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Paz A, Gagen EJ, Levett A, Zhao Y, Kopittke PM, Southam G. Biogeochemical cycling of iron oxides in the rhizosphere of plants grown on ferruginous duricrust (canga). THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 713:136637. [PMID: 31958731 DOI: 10.1016/j.scitotenv.2020.136637] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 01/08/2020] [Accepted: 01/09/2020] [Indexed: 06/10/2023]
Abstract
Goethite-cemented duricrusts, also known as canga, commonly occur as a capping rock protecting underlying iron ore deposits. The processes that govern canga formation are still unclear but include recurrent partial dissolution and recrystallisation of goethite through biogeochemical cycling of iron, hypothesised to be catalysed by plants and bacteria. In the present study, the effect of plant exudates on mobilisation of iron in canga was examined using model plants grown on crushed canga in RHIZOtest devices, which separate roots from substrate by a semi-permeable membrane. Moderate plant-induced acidification of the canga was detected, however the primary driver of mineral dissolution was the synergistic effect of reductive and ligand-promoted dissolution, identified by an increase in organic acids concentration and the presence of low concentrations of free ferrous iron. Whilst organic acids exudation lasted, iron cations were stabilised in solution; once the organic acids were degraded by microorganisms, the free cations precipitated as iron oxy-hydroxides. Mineralogical analysis and high-resolution microscopy confirmed our hypothesis that plants that grow in this iron-rich substrate contribute to iron dissolution indirectly (e.g., during phosphate solubilisation), and that the resulting surplus iron not taken up by the plants is redeposited, promoting the cementation of the residual minerals. Understanding the contribution of plants to the iron cycling in canga is crucial when formulating post-mining rehabilitation strategies for iron ore sites.
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Affiliation(s)
- Anat Paz
- School of Earth and Environmental Sciences, The University of Queensland, St Lucia, QLD 4072, Australia.
| | - Emma J Gagen
- School of Earth and Environmental Sciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Alan Levett
- School of Earth and Environmental Sciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Yitian Zhao
- School of Mechanical and Mining Engineering, University of Queensland, St. Lucia, QLD 4072, Australia
| | - Peter M Kopittke
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Gordon Southam
- School of Earth and Environmental Sciences, The University of Queensland, St Lucia, QLD 4072, Australia
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28
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Abrahão A, de Britto Costa P, Teodoro GS, Lambers H, Nascimento DL, Adrián López de Andrade S, Ryan MH, Silva Oliveira R. Vellozioid roots allow for habitat specialization among rock‐ and soil‐dwelling Velloziaceae in
campos rupestres. Funct Ecol 2019. [DOI: 10.1111/1365-2435.13479] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Anna Abrahão
- Departamento de Biologia Vegetal Institute of Biology University of Campinas – UNICAMP Campinas Brazil
- School of Biological Sciences University of Western Australia Crawley (Perth) WA Australia
- Institute of Soil Science and Land Evaluation University of Hohenheim Stuttgart Germany
| | - Patricia de Britto Costa
- Departamento de Biologia Vegetal Institute of Biology University of Campinas – UNICAMP Campinas Brazil
- School of Biological Sciences University of Western Australia Crawley (Perth) WA Australia
| | | | - Hans Lambers
- School of Biological Sciences University of Western Australia Crawley (Perth) WA Australia
| | - Diego L. Nascimento
- Geosciences Institute Universidade Estadual de Campinas Cidade Universitária Zeferino Vaz Campinas Brazil
| | | | - Megan H. Ryan
- School of Agriculture and Environment University of Western Australia Crawley (Perth) WA Australia
| | - Rafael Silva Oliveira
- Departamento de Biologia Vegetal Institute of Biology University of Campinas – UNICAMP Campinas Brazil
- School of Biological Sciences University of Western Australia Crawley (Perth) WA Australia
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29
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Camargo AP, de Souza RSC, de Britto Costa P, Gerhardt IR, Dante RA, Teodoro GS, Abrahão A, Lambers H, Carazzolle MF, Huntemann M, Clum A, Foster B, Foster B, Roux S, Palaniappan K, Varghese N, Mukherjee S, Reddy TBK, Daum C, Copeland A, Chen IMA, Ivanova NN, Kyrpides NC, Pennacchio C, Eloe-Fadrosh EA, Arruda P, Oliveira RS. Microbiomes of Velloziaceae from phosphorus-impoverished soils of the campos rupestres, a biodiversity hotspot. Sci Data 2019; 6:140. [PMID: 31366912 PMCID: PMC6668480 DOI: 10.1038/s41597-019-0141-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 06/25/2019] [Indexed: 12/22/2022] Open
Abstract
The rocky, seasonally-dry and nutrient-impoverished soils of the Brazilian campos rupestres impose severe growth-limiting conditions on plants. Species of a dominant plant family, Velloziaceae, are highly specialized to low-nutrient conditions and seasonal water availability of this environment, where phosphorus (P) is the key limiting nutrient. Despite plant-microbe associations playing critical roles in stressful ecosystems, the contribution of these interactions in the campos rupestres remains poorly studied. Here we present the first microbiome data of Velloziaceae spp. thriving in contrasting substrates of campos rupestres. We assessed the microbiomes of Vellozia epidendroides, which occupies shallow patches of soil, and Barbacenia macrantha, growing on exposed rocks. The prokaryotic and fungal profiles were assessed by rRNA barcode sequencing of epiphytic and endophytic compartments of roots, stems, leaves and surrounding soil/rocks. We also generated root and substrate (rock/soil)-associated metagenomes of each plant species. We foresee that these data will contribute to decipher how the microbiome contributes to plant functioning in the campos rupestres, and to unravel new strategies for improved crop productivity in stressful environments.
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Affiliation(s)
- Antonio Pedro Camargo
- Centro de Biologia Molecular e Engenharia Genética, Universidade Estadual de Campinas (UNICAMP), 13083-875, Campinas, SP, Brazil
- Departamento de Genética e Evolução, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), 13083-875, Campinas, SP, Brazil
- Genomics for Climate Change Research Center, Universidade Estadual de Campinas (UNICAMP), 13083-875, Campinas, SP, Brazil
| | - Rafael Soares Correa de Souza
- Centro de Biologia Molecular e Engenharia Genética, Universidade Estadual de Campinas (UNICAMP), 13083-875, Campinas, SP, Brazil.
- Departamento de Genética e Evolução, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), 13083-875, Campinas, SP, Brazil.
- Genomics for Climate Change Research Center, Universidade Estadual de Campinas (UNICAMP), 13083-875, Campinas, SP, Brazil.
| | - Patrícia de Britto Costa
- Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), 13083-862, Campinas, SP, Brazil
- School of Biological Sciences, University of Western Australia (UWA), Perth, WA, 6009, Australia
| | - Isabel Rodrigues Gerhardt
- Centro de Biologia Molecular e Engenharia Genética, Universidade Estadual de Campinas (UNICAMP), 13083-875, Campinas, SP, Brazil
- Genomics for Climate Change Research Center, Universidade Estadual de Campinas (UNICAMP), 13083-875, Campinas, SP, Brazil
- Embrapa Informática Agropecuária, 13083-886, Campinas, SP, Brazil
| | - Ricardo Augusto Dante
- Centro de Biologia Molecular e Engenharia Genética, Universidade Estadual de Campinas (UNICAMP), 13083-875, Campinas, SP, Brazil
- Genomics for Climate Change Research Center, Universidade Estadual de Campinas (UNICAMP), 13083-875, Campinas, SP, Brazil
- Embrapa Informática Agropecuária, 13083-886, Campinas, SP, Brazil
| | - Grazielle Sales Teodoro
- Instituto de Ciências Biológicas, Universidade Federal do Para (UFPA), 66075-750, Belem, PA, Brazil
| | - Anna Abrahão
- Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), 13083-862, Campinas, SP, Brazil
- School of Biological Sciences, University of Western Australia (UWA), Perth, WA, 6009, Australia
| | - Hans Lambers
- School of Biological Sciences, University of Western Australia (UWA), Perth, WA, 6009, Australia
| | - Marcelo Falsarella Carazzolle
- Departamento de Genética e Evolução, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), 13083-875, Campinas, SP, Brazil
| | - Marcel Huntemann
- Department of Energy Joint Genome Institute, Walnut Creek, California, 94598, USA
| | - Alicia Clum
- Department of Energy Joint Genome Institute, Walnut Creek, California, 94598, USA
| | - Brian Foster
- Department of Energy Joint Genome Institute, Walnut Creek, California, 94598, USA
| | - Bryce Foster
- Department of Energy Joint Genome Institute, Walnut Creek, California, 94598, USA
| | - Simon Roux
- Department of Energy Joint Genome Institute, Walnut Creek, California, 94598, USA
| | | | - Neha Varghese
- Department of Energy Joint Genome Institute, Walnut Creek, California, 94598, USA
| | - Supratim Mukherjee
- Department of Energy Joint Genome Institute, Walnut Creek, California, 94598, USA
| | - T B K Reddy
- Department of Energy Joint Genome Institute, Walnut Creek, California, 94598, USA
| | - Chris Daum
- Department of Energy Joint Genome Institute, Walnut Creek, California, 94598, USA
| | - Alex Copeland
- Department of Energy Joint Genome Institute, Walnut Creek, California, 94598, USA
| | - I-Min A Chen
- Department of Energy Joint Genome Institute, Walnut Creek, California, 94598, USA
| | - Natalia N Ivanova
- Department of Energy Joint Genome Institute, Walnut Creek, California, 94598, USA
| | - Nikos C Kyrpides
- Department of Energy Joint Genome Institute, Walnut Creek, California, 94598, USA
| | - Christa Pennacchio
- Department of Energy Joint Genome Institute, Walnut Creek, California, 94598, USA
| | | | - Paulo Arruda
- Centro de Biologia Molecular e Engenharia Genética, Universidade Estadual de Campinas (UNICAMP), 13083-875, Campinas, SP, Brazil
- Departamento de Genética e Evolução, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), 13083-875, Campinas, SP, Brazil
- Genomics for Climate Change Research Center, Universidade Estadual de Campinas (UNICAMP), 13083-875, Campinas, SP, Brazil
| | - Rafael Silva Oliveira
- Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), 13083-862, Campinas, SP, Brazil.
- School of Biological Sciences, University of Western Australia (UWA), Perth, WA, 6009, Australia.
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30
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Augusto L, Fanin N, Bakker MR. When plants eat rocks: Functional adaptation of roots on rock outcrops. Funct Ecol 2019. [DOI: 10.1111/1365-2435.13325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Laurent Augusto
- UMR 1391 ISPA INRA, Bordeaux Sciences Agro Villenave d’Ornon France
| | - Nicolas Fanin
- UMR 1391 ISPA INRA, Bordeaux Sciences Agro Villenave d’Ornon France
| | - Mark R. Bakker
- UMR 1391 ISPA INRA, Bordeaux Sciences Agro Villenave d’Ornon France
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31
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Fan Q, Wang Z, Chang S, Peng Z, Wanapat M, Bowatte S, Hou F. Relationship of mineral elements in sheep grazing in the highland agro-ecosystem. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2019; 33:44-52. [PMID: 31010963 PMCID: PMC6946991 DOI: 10.5713/ajas.18.0955] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 04/06/2019] [Indexed: 11/27/2022]
Abstract
Objective Minerals are one of the important nutrients for supporting the growth of sheep grazing in the highland, northwest of China. The experiment was conducted to investigate the relationship of both macro and micro minerals in sheep grazing in the highlands of six districts located in the Qilian Mountain of China. Methods Samples of herbage (n = 240) and soil (n = 240) were collected at random in a “W” shape across the area designated for harvesting from 24 farms, where the sheep commonly graze in October (winter) for mineral analyses. In addition, serum samples were taken via jugular vein from 20 sheep per farm from 24 farms (n = 480 samples in total) for serum minerals analyses. Mean values of macro and micro minerals were statistically compared among districts and the correlations among soil-plant-animal were statistically analyzed and correlations were regressed, as well. Results The results revealed that there were variations for both macro and micro minerals among districts. Statistical analysis of the correlation coefficients between herbage and sheep were significantly different for most of the minerals but not for P, Cu, and Se. Many correlation regression coefficients were found significantly different among minerals of herbage, soil, and sheep serum especially those of K, Na, Fe, Mn, and Zn (between herbage and sheep serum), and Fe and Mn (between herbage and soil), Na, Fe, Mn, and Zn (between soil and sheep serum), respectively. The regression coefficient equations derived under this experiment for prediction of Ca (R2 = 0.618), K (R2 = 0.803), Mg (R2 = 0.767), Na (R2 = 0.670), Fe (R2 = 0.865), Zn (R2 = 0.950), Mn (R2 = 0.936), and Se (R2 = 0.630), resulted in significant R2 values. Conclusion It is inferred that the winter herbage minerals in all the districts were below the recommended levels for macro minerals which indicated there would be some mineral deficiencies in sheep grazing the herbage in these regions. Supplemental minerals may therefore play an important role in balancing the minerals available from the herbage in winter and would lead to increased productivity in sheep on the highland areas of China. These findings could be potentially applied to the other regions for improving the livestock productivity.
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Affiliation(s)
- Qingshan Fan
- State Key Laboratory of Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Zhaofeng Wang
- State Key Laboratory of Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Shenghua Chang
- State Key Laboratory of Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Zechen Peng
- State Key Laboratory of Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Metha Wanapat
- Tropical Feed Resources Research and Development Center (TROFREC), Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Saman Bowatte
- State Key Laboratory of Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Fujiang Hou
- State Key Laboratory of Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
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Teodoro GS, Lambers H, Nascimento DL, de Britto Costa P, Flores‐Borges DNA, Abrahão A, Mayer JLS, Sawaya ACHF, Ladeira FSB, Abdala DB, Pérez CA, Oliveira RS. Specialized roots of Velloziaceae weather quartzite rock while mobilizing phosphorus using carboxylates. Funct Ecol 2019. [DOI: 10.1111/1365-2435.13324] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Grazielle Sales Teodoro
- Biology Institute Universidade Federal do Pará Guamá Belém Brazil
- Department of Plant Biology, Biology Institute, Universidade Estadual de Campinas Cidade Universitária Zeferino Vaz Campinas Brazil
| | - Hans Lambers
- School of Biological Sciences The University of Western Australia Crawley (Perth) Western Australia Australia
| | - Diego L. Nascimento
- Geosciences Institute, Universidade Estadual de Campinas Cidade Universitária Zeferino Vaz Campinas Brazil
| | - Patrícia de Britto Costa
- Department of Plant Biology, Biology Institute, Universidade Estadual de Campinas Cidade Universitária Zeferino Vaz Campinas Brazil
- School of Biological Sciences The University of Western Australia Crawley (Perth) Western Australia Australia
| | - Denisele N. A. Flores‐Borges
- Department of Plant Biology, Biology Institute, Universidade Estadual de Campinas Cidade Universitária Zeferino Vaz Campinas Brazil
| | - Anna Abrahão
- Department of Plant Biology, Biology Institute, Universidade Estadual de Campinas Cidade Universitária Zeferino Vaz Campinas Brazil
- School of Biological Sciences The University of Western Australia Crawley (Perth) Western Australia Australia
| | - Juliana L. S. Mayer
- Department of Plant Biology, Biology Institute, Universidade Estadual de Campinas Cidade Universitária Zeferino Vaz Campinas Brazil
| | - Alexandra C. H. F. Sawaya
- Department of Plant Biology, Biology Institute, Universidade Estadual de Campinas Cidade Universitária Zeferino Vaz Campinas Brazil
| | | | - Dalton Belchior Abdala
- Brazilian Synchrotron Light Laboratory (LNLS) Brazilian Center for Research in Energy and Materials (CNPEM) Campinas São Paulo Brazil
| | - Carlos A. Pérez
- Brazilian Synchrotron Light Laboratory (LNLS) Brazilian Center for Research in Energy and Materials (CNPEM) Campinas São Paulo Brazil
| | - Rafael S. Oliveira
- Department of Plant Biology, Biology Institute, Universidade Estadual de Campinas Cidade Universitária Zeferino Vaz Campinas Brazil
- School of Biological Sciences The University of Western Australia Crawley (Perth) Western Australia Australia
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Dayrell RLC, Arruda AJ, Pierce S, Negreiros D, Meyer PB, Lambers H, Silveira FAO. Ontogenetic shifts in plant ecological strategies. Funct Ecol 2018. [DOI: 10.1111/1365-2435.13221] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Roberta L. C. Dayrell
- Departamento de BotânicaUniversidade Federal de Minas Gerais (UFMG) Belo Horizonte Brazil
- School of Biological SciencesUniversity of Western Australia (UWA) Perth Australia
| | - André J. Arruda
- Departamento de BotânicaUniversidade Federal de Minas Gerais (UFMG) Belo Horizonte Brazil
- IMBE – Institut Méditerranéen de Biodiversité et d’Ecologie, CNRS, IRD, Université d’Avignon et des Pays de Vaucluse, IUT d’AvignonAix Marseille Université Avignon France
| | - Simon Pierce
- Department of Agricultural and Environmental Sciences (DiSAA)University of Milan Milan Italy
| | - Daniel Negreiros
- Instituto de Ciências Biológicas e SaúdeCentro Universitário UNA Belo Horizonte Brazil
| | - Pablo B. Meyer
- Departamento de BotânicaUniversidade Federal de Minas Gerais (UFMG) Belo Horizonte Brazil
| | - Hans Lambers
- School of Biological SciencesUniversity of Western Australia (UWA) Perth Australia
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Alcantara S, Ree RH, Mello-Silva R. Accelerated diversification and functional trait evolution in Velloziaceae reveal new insights into the origins of the campos rupestres' exceptional floristic richness. ANNALS OF BOTANY 2018; 122:165-180. [PMID: 29800276 PMCID: PMC6025242 DOI: 10.1093/aob/mcy063] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 04/12/2018] [Indexed: 05/06/2023]
Abstract
Background and Aims The greater diversity of plant clades in the Neotropics compared to their relatives in Africa is a pervasive pattern in biogeography. To better understand the causes of this imbalance, we studied the diversification dynamics of the monocot family Velloziaceae. In addition to being conspicuously richer in the Neotropics compared to the Palaeotropics, many species of Velloziaceae exhibit extreme desiccation tolerance (i.e. 'resurrection' behaviour), and other ecological specializations to life on rocky outcrops, poor sandy soils, open vegetation and seasonally dry climates. Velloziaceae is also ecologically dominant in the campos rupestres, a habitat having exceptionally high plant diversity and endemism in Brazil. Methods We reconstructed a densely sampled time-calibrated molecular phylogeny and used state-dependent and state-independent models to estimate rates of lineage diversification in relation to continent-scale geographical occurrence and functional traits associated with desiccation tolerance and water storage capacity. Key Results Independent shifts to faster diversification occurred within two Neotropical lineages, Vellozia and Barbacenia. The Vellozia radiation was associated with the presence of conspicuous aerial stems, and was followed by decreasing diversification rates during the Oligocene, a time of rising global temperatures and expanding open areas around the world. The Barbacenia radiation was faster and more recent, occurring during the cooling conditions of the Miocene, and associated with the acquisition of aquiferous parenchyma on the leaves. Conclusions High species richness of Velloziaceae in South America has been driven by faster diversification in lineages predominantly occurring in the campos rupestres, putatively by the evolution of adaptive strategies in response to independent climatic events. The radiation of Vellozia in particular might have played a key role in the assembly of the campos rupestres vegetation.
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Affiliation(s)
- Suzana Alcantara
- Departamento de Botânica, Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Campus Universitário, Trindade, Florianópolis, SC, Brazil
- Departamento de Botânica, Universidade de São Paulo, São Paulo, SP, Brazil
- Integrative Research Center, Field Museum of Natural History, Chicago, IL, USA
| | - Richard H Ree
- Integrative Research Center, Field Museum of Natural History, Chicago, IL, USA
| | - Renato Mello-Silva
- Departamento de Botânica, Universidade de São Paulo, São Paulo, SP, Brazil
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35
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Le Stradic S, Fernandes GW, Buisson E. No recovery of campo rupestre
grasslands after gravel extraction: implications for conservation and restoration. Restor Ecol 2018. [DOI: 10.1111/rec.12713] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Soizig Le Stradic
- Institut Méditerranéen de Biodiversité et d'Ecologie marine et continentale (IMBE); Université d'Avignon et des Pays de Vaucluse, UMR CNRS IRD Aix Marseille Université; IUT site Agroparc, BP 61207, 84911 Avignon Cedex 09 France
- Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais; Belo Horizonte Minas Gerais, Brazil
- Departamento de Botânica, Instituto de Biociências; Universidade Estadual Paulista (UNESP); Rio Claro São Paulo, Brazil
| | - Geraldo W. Fernandes
- Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais; Belo Horizonte Minas Gerais, Brazil
| | - Elise Buisson
- Institut Méditerranéen de Biodiversité et d'Ecologie marine et continentale (IMBE); Université d'Avignon et des Pays de Vaucluse, UMR CNRS IRD Aix Marseille Université; IUT site Agroparc, BP 61207, 84911 Avignon Cedex 09 France
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Effects of using different host plants and long-term fertilization systems on population sizes of infective arbuscular mycorrhizal fungi. Symbiosis 2018. [DOI: 10.1007/s13199-018-0546-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abrahão A, Ryan MH, Laliberté E, Oliveira RS, Lambers H. Phosphorus- and nitrogen-acquisition strategies in two Bossiaea species (Fabaceae) along retrogressive soil chronosequences in south-western Australia. PHYSIOLOGIA PLANTARUM 2018; 163:323-343. [PMID: 29418005 DOI: 10.1111/ppl.12704] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Revised: 01/23/2018] [Accepted: 01/31/2018] [Indexed: 06/08/2023]
Abstract
During long-term ecosystem development and its associated decline in soil phosphorus (P) availability, the abundance of mycorrhizal plant species declines at the expense of non-mycorrhizal species with root specialisations for P-acquisition, such as massive exudation of carboxylates. Leaf manganese (Mn) concentration has been suggested as a proxy for such a strategy, Mn concentration being higher in non-mycorrhizal plants that release carboxylates than in mycorrhizal plants. Shifts in nitrogen (N)-acquisition strategies also occur; nodulation in legumes is expected at low N availability, when sufficient P is available. We investigated whether two congeneric legume species (Bossiaea linophylla and Bossiaea eriocarpa) occurring along two long-term chronosequences on the south-western Australian coast and grown in a glasshouse at varying N and P supply exhibited plasticity in nutrient-acquisition strategies. We hypothesised that the shifts in nutrient limitation and nutrient-acquisition strategies at the community level would also be found at the species level. Leaf N: P ratios and the responses to nutrient availability suggested that growth of both species exhibited P-limitation in all treatments, due to the very high leaf [N] of legumes afforded by symbiotic N-fixation. Mycorrhizal colonisation was not greater at higher P supply, and root exudation of carboxylates was not stimulated at low P supply; both were unrelated to leaf [Mn]. However, nodule production declined with increasing N supply. We conclude that intraspecific variation in nutrient-acquisition and use is low in these species, and that the variation at the community level, observed in previous studies, is likely driven by high-species turnover.
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Affiliation(s)
- Anna Abrahão
- Departamento de Biologia Vegetal, Institute of Biology, University of Campinas - UNICAMP, Campinas 13083-862, Brazil
- School of Biological Sciences, University of Western Australia, Crawley, WA 6009, Australia
| | - Megan H Ryan
- School of Agriculture and Environment, University of Western Australia, Crawley, WA 6009, Australia
| | - Etienne Laliberté
- School of Biological Sciences, University of Western Australia, Crawley, WA 6009, Australia
- Centre sur la biodiversité, Institut de recherche en biologie végétale, Département de sciences biologiques, Université de Montréal, Montréal, Québec H1X 2B1, Canada
| | - Rafael S Oliveira
- Departamento de Biologia Vegetal, Institute of Biology, University of Campinas - UNICAMP, Campinas 13083-862, Brazil
- School of Biological Sciences, University of Western Australia, Crawley, WA 6009, Australia
| | - Hans Lambers
- School of Biological Sciences, University of Western Australia, Crawley, WA 6009, Australia
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38
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Neugebauer K, Broadley MR, El-Serehy HA, George TS, McNicol JW, Moraes MF, White PJ. Variation in the angiosperm ionome. PHYSIOLOGIA PLANTARUM 2018; 163:306-322. [PMID: 29412469 DOI: 10.1111/ppl.12700] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 01/15/2018] [Accepted: 01/31/2018] [Indexed: 05/06/2023]
Abstract
The ionome is defined as the elemental composition of a subcellular structure, cell, tissue, organ or organism. The subset of the ionome comprising mineral nutrients is termed the functional ionome. A 'standard functional ionome' of leaves of an 'average' angiosperm, defined as the nutrient composition of leaves when growth is not limited by mineral nutrients, is presented and can be used to compare the effects of environment and genetics on plant nutrition. The leaf ionome of a plant is influenced by interactions between its environment and genetics. Examples of the effects of the environment on the leaf ionome are presented and the consequences of nutrient deficiencies on the leaf ionome are described. The physiological reasons for (1) allometric relationships between leaf nitrogen and phosphorus concentrations and (2) linear relationships between leaf calcium and magnesium concentrations are explained. It is noted that strong phylogenetic effects on the mineral composition of leaves of angiosperm species are observed even when sampled from diverse environments. The evolutionary origins of traits including (1) the small calcium concentrations of Poales leaves, (2) the large magnesium concentrations of Caryophyllales leaves and (3) the large sulphur concentrations of Brassicales leaves are traced using phylogenetic relationships among angiosperm orders, families and genera. The rare evolution of hyperaccumulation of toxic elements in leaves of angiosperms is also described. Consequences of variation in the leaf ionome for ecology, mineral cycling in the environment, strategies for phytoremediation of contaminated land, sustainable agriculture and the nutrition of livestock and humans are discussed.
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Affiliation(s)
- Konrad Neugebauer
- Ecological Science Group, The James Hutton Institute, Dundee, DD2 5DA, UK
- Plant and Crop Sciences Division, University of Nottingham, Loughborough, LE12 5RD, UK
| | - Martin R Broadley
- Plant and Crop Sciences Division, University of Nottingham, Loughborough, LE12 5RD, UK
| | - Hamed A El-Serehy
- Zoology Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Timothy S George
- Ecological Science Group, The James Hutton Institute, Dundee, DD2 5DA, UK
| | | | - Milton F Moraes
- Graduate Program of Tropical Agriculture, Federal University of Mato Grosso, Barra do Garças, Mato Grosso, Brazil
| | - Philip J White
- Ecological Science Group, The James Hutton Institute, Dundee, DD2 5DA, UK
- Distinguished Scientist Fellowship Program, King Saud University, Riyadh, 11451, Saudi Arabia
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Kasowska D, Gediga K, Spiak Z. Heavy metal and nutrient uptake in plants colonizing post-flotation copper tailings. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:824-835. [PMID: 29063407 PMCID: PMC5756550 DOI: 10.1007/s11356-017-0451-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 10/09/2017] [Indexed: 05/30/2023]
Abstract
Copper ore mining and processing release hazardous post-flotation wastes that are difficult for remediation. The studied tailings were extremely rich in Cu (1800 mg kg-1) and contaminated with Co and Mn, and contained very little available forms of P, Fe, and Zn. The plants growing in tailings were distinctly enriched in Cu, Cd, Co, Ni, and Pb, and the concentration of copper achived the critical toxicity level in shoots of Cerastium arvense and Polygonum aviculare. The redundancy analysis demonstrated significant relationship between the concentration of available forms of studied elements in substrate and the chemical composition of plant shoots. Results of the principal component analysis enabled to distinguish groups of plants which significantly differed in the pattern of element accumulation. The grass species Agrostis stolonifera and Calamagrostis epigejos growing in the tailings accumulated significantly lower amounts of Cu, but they also had the lowest levels of P, Fe, and Zn in comparison to dicotyledonous. A. stolonifera occurred to be the most suitable species for phytostabilization of the tailings with regard to its low shoot Cu content and more efficient acquisition of limiting nutrients in relation to C. epigejos. The amendments improving texture, phosphorus fertilization, and the introduction of native leguminous species were recommended for application in the phytoremediation process of the tailings.
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Affiliation(s)
- Dorota Kasowska
- Department of Botany and Plant Ecology, Wrocław University of Environmental and Life Sciences, Grunwaldzki Square 24A, 50-363 Wrocław, Poland
| | - Krzysztof Gediga
- Department of Plant Nutrition, Wrocław University of Environmental and Life Sciences, Grunwaldzka Street 53, 50-357 Wrocław, Poland
| | - Zofia Spiak
- Department of Plant Nutrition, Wrocław University of Environmental and Life Sciences, Grunwaldzka Street 53, 50-357 Wrocław, Poland
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Zappi DC, Moro MF, Meagher TR, Nic Lughadha E. Plant Biodiversity Drivers in Brazilian Campos Rupestres: Insights from Phylogenetic Structure. FRONTIERS IN PLANT SCIENCE 2017; 8:2141. [PMID: 29312396 PMCID: PMC5742226 DOI: 10.3389/fpls.2017.02141] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 12/04/2017] [Indexed: 05/28/2023]
Abstract
Old, climate-buffered infertile landscapes (Ocbils) have attracted increasing levels of interest in recent years because of their exceptionally diverse plant communities. Brazil's campos rupestres (rupestrian grasslands) are home to almost 15% of Brazil's native flora in less than 0.8% of Brazil's territory: an ideal study system for exploring variation in floristic diversity and phylogenetic structure in sites differing in geology and phytophysiognomy. We found significant differences in floristic diversity and phylogenetic structure across a range of study sites encompassing open vegetation and forest on quartzite (FQ) and on ironstone substrates, commonly termed canga. Substrate and physiognomy were key in structuring floristic diversity in the Espinhaço and physiognomy was more important than substrate in structuring phylogenetic diversity, with neither substrate nor its interaction with physiognomy accounting for significant variation in phylogenetic structure. Phylogenetic clustering was significant in open vegetation on both canga and quartzite, reflecting the potential role of environmental filtering in these exposed montane communities adapted to multiple environmental stressors. In forest communities, phylogenetic clustering was significant only at relatively deep nodes of the phylogeny in FQ while no significant phylogenetic clustering was detected across forest on canga (FC), which may be attributable to proximity to the megadiverse Atlantic forest biome and/or comparatively benign environmental conditions in FC with relatively deep, nutrient-rich soils and access to edaphic water reliable in comparison to those for open vegetation on canga and open or forest communities on quartzite. Clades representing relatively old lineages are significantly over-represented in campos rupestres on quartzite, consistent with the Gondwanan Heritage Hypothesis of Ocbil theory. In contrast, forested sites on canga are recognized as Yodfels. To be effective, conservation measures must take account of the distinct communities which are encompassed within the broad term campos rupestres, and the differing vulnerabilities of Ocbils and Yodfels.
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Affiliation(s)
- Daniela C. Zappi
- Biodiversity and Ecosystem Services Team, Instituto Tecnológico Vale, Belém, Brazil
- Coordenação de Botânica, Museu Paraense Emílio Goeldi, Belém, Brazil
| | - Marcelo F. Moro
- Instituto de Ciências do Mar (Labomar), Universidade Federal do Ceará, Fortaleza, Brazil
| | - Thomas R. Meagher
- School of Biology, University of St Andrews, St Andrews, United Kingdom
| | - Eimear Nic Lughadha
- Conservation Science Department, Royal Botanic Gardens, Kew, Richmond, United Kingdom
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Güsewell S, Schroth MH. How functional is a trait? Phosphorus mobilization through root exudates differs little between Carex species with and without specialized dauciform roots. THE NEW PHYTOLOGIST 2017; 215:1438-1450. [PMID: 28670743 DOI: 10.1111/nph.14674] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Accepted: 05/21/2017] [Indexed: 06/07/2023]
Abstract
Root structures secreting carboxylates and phosphatases are thought to enhance a plant's phosphorus (P) acquisition. But do closely related species with and without such structures really differ in root exudation, P mobilization, or ecological niche? We investigated this by comparing 23 European Carex species with and without 'dauciform roots' (DRs). Plants grown in pots with sand were screened for DR formation, phosphatase activities, carboxylate exudation, and utilization of various organic and inorganic P compounds. Ecological niches were compared using ecological indicator values and nutrient concentrations of plant shoots in natural habitats. Species of subgenus Carex formed DRs, while species of subgenus Vignea did not. Species with DRs had higher root diesterase activity than species without DRs, exuded more citrate but less oxalate and less total carboxylates, and allocated less biomass to roots. Species with and without DRs showed similar growth responses to different forms of P and different amounts of P supplied; their natural habitats do not differ in soil fertility or degree of P limitation. Despite some differences in physiological function, DRs did not influence the P acquisition and nutritional niche of European Carex species, suggesting that species with and without DRs do not exhibit distinct P-acquisition strategies.
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Affiliation(s)
- Sabine Güsewell
- Institute of Integrative Biology, ETH Zurich, Universitätstrasse 16, 8092, Zürich, Switzerland
| | - Martin H Schroth
- Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, Universitätstrasse 16, 8092, Zürich, Switzerland
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Gomes VM, Negreiros D, Fernandes GW, Pires ACV, Silva ACDR, Le Stradic S. Long-term monitoring of shrub species translocation in degraded Neotropical mountain grassland. Restor Ecol 2017. [DOI: 10.1111/rec.12537] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vanessa M. Gomes
- Laboratory of Evolutionary Ecology and Biodiversity; DBG/ICB, Universidade Federal de Minas Gerais; Minas Gerais Brazil
| | - Daniel Negreiros
- Laboratory of Evolutionary Ecology and Biodiversity; DBG/ICB, Universidade Federal de Minas Gerais; Minas Gerais Brazil
- Institute of Biological Sciences and Health; Centro Universitário UNA; Minas Gerais Brazil
| | - G. Wilson Fernandes
- Laboratory of Evolutionary Ecology and Biodiversity; DBG/ICB, Universidade Federal de Minas Gerais; Minas Gerais Brazil
| | - Ana C. V. Pires
- Laboratory of Evolutionary Ecology and Biodiversity; DBG/ICB, Universidade Federal de Minas Gerais; Minas Gerais Brazil
| | - Ana C. D. R. Silva
- Laboratory of Evolutionary Ecology and Biodiversity; DBG/ICB, Universidade Federal de Minas Gerais; Minas Gerais Brazil
| | - Soizig Le Stradic
- Laboratory of Phenology, Departament of Botany; Biosciences Institute, UNESP-Universidade Estadual Paulista; São Paulo Brazil
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Babiychuk E, Kushnir S, Vasconcelos S, Dias MC, Carvalho-Filho N, Nunes GL, Dos Santos JF, Tyski L, da Silva DF, Castilho A, Fonseca VLI, Oliveira G. Natural history of the narrow endemics Ipomoea cavalcantei and I. marabaensis from Amazon Canga savannahs. Sci Rep 2017; 7:7493. [PMID: 28790327 PMCID: PMC5548896 DOI: 10.1038/s41598-017-07398-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 06/28/2017] [Indexed: 11/09/2022] Open
Abstract
Amazon comprises a vast variety of ecosystems, including savannah-like Canga barrens that evolved on iron-lateritic rock plateaus of the Carajás Mountain range. Individual Cangas are enclosed by the rain forest, indicating insular isolation that enables speciation and plant community differentiation. To establish a framework for the research on natural history and conservation management of endemic Canga species, seven chloroplast DNA loci and an ITS2 nuclear DNA locus were used to study natural molecular variation of the red flowered Ipomoea cavalcantei and the lilac flowered I. marabaensis. Partitioning of the nuclear and chloroplast gene alleles strongly suggested that the species share the most recent common ancestor, pointing a new independent event of the red flower origin in the genus. Chloroplast gene allele analysis showed strong genetic differentiation between Canga populations, implying a limited role of seed dispersal in exchange of individuals between Cangas. Closed haplotype network topology indicated a requirement for the paternal inheritance in generation of cytoplasmic genetic variation. Tenfold higher nucleotide diversity in the nuclear ITS2 sequences distinguished I. cavalcantei from I. marabaensis, implying a different pace of evolutionary changes. Thus, Canga ecosystems offer powerful venues for the study of speciation, multitrait adaptation and the origins of genetic variation.
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Affiliation(s)
- Elena Babiychuk
- Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Bairro Nazaré, CEP 66055-090, Belém, Pará, Brazil.
| | - Sergei Kushnir
- Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Bairro Nazaré, CEP 66055-090, Belém, Pará, Brazil
| | - Santelmo Vasconcelos
- Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Bairro Nazaré, CEP 66055-090, Belém, Pará, Brazil
| | - Mariana Costa Dias
- Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Bairro Nazaré, CEP 66055-090, Belém, Pará, Brazil
| | - Nelson Carvalho-Filho
- Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Bairro Nazaré, CEP 66055-090, Belém, Pará, Brazil
| | - Gisele Lopes Nunes
- Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Bairro Nazaré, CEP 66055-090, Belém, Pará, Brazil
| | - Jorge Filipe Dos Santos
- Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Bairro Nazaré, CEP 66055-090, Belém, Pará, Brazil
| | - Lourival Tyski
- Parque Zoobotânico Vale, VALE S.A., Rod. Raimundo Mascarenhas, Km 26, S/N., Núcleo Urbano de Carajás, CEP 68516 000, Parauapebas, Pará, Brazil
| | - Delmo Fonseca da Silva
- Parque Zoobotânico Vale, VALE S.A., Rod. Raimundo Mascarenhas, Km 26, S/N., Núcleo Urbano de Carajás, CEP 68516 000, Parauapebas, Pará, Brazil
| | - Alexandre Castilho
- VALE S.A., Rua Guamá N°60, Prédio DIFN, Núcleo Urbano de Carajás, CEP: 68516-000, Parauapebas, Pará, Brazil
| | | | - Guilherme Oliveira
- Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Bairro Nazaré, CEP 66055-090, Belém, Pará, Brazil
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Dayrell RLC, Garcia QS, Negreiros D, Baskin CC, Baskin JM, Silveira FAO. Phylogeny strongly drives seed dormancy and quality in a climatically buffered hotspot for plant endemism. ANNALS OF BOTANY 2017; 119:267-277. [PMID: 27568299 PMCID: PMC5321058 DOI: 10.1093/aob/mcw163] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 05/24/2016] [Accepted: 06/22/2016] [Indexed: 05/22/2023]
Abstract
BACKGROUND AND AIMS Models of costs and benefits of dormancy (D) predict that the evolutionarily stable strategy in long-term stable environments is for non-dormancy (ND), but this prediction remains to be tested empirically. We reviewed seed traits of species in the climatically buffered, geologically stable and nutrient-impoverished campo rupestre grasslands in Brazil to test the hypothesis that ND is favoured over D. We examined the relative importance of life-history traits and phylogeny in driving the evolution of D and assessed seed viability at the community level. METHODS Germination and viability data were retrieved from 67 publications and ND/D was determined for 168 species in 25 angiosperm families. We also obtained the percentage of embryoless, viable and dormant seeds for 74 species. Frequencies of species with dormant and non-dormant seeds were compared with global databases of dormancy distribution. KEY RESULTS The majority of campo rupestre taxa (62·5 %) had non-dormant seeds, and the ND/D ratio was the highest for any vegetation type on Earth. Dormancy was unrelated to other species life-history traits, suggesting that contemporary factors are poor predictors of D. We found a significant phylogenetic structure in the dormancy categorical trait. Dormancy diversity was highly skewed towards the root of the phylogenetic tree and there was a strong phylogenetic signal in the data, suggesting a major role of phylogeny in determining the evolution of D versus ND and seed viability. Quantitative analysis of the data revealed that at least half of the seeds produced by 46 % of the surveyed populations were embryoless and/or otherwise non-viable. CONCLUSIONS Our results support the view that long-term climatic and geological stability favour ND. Seed viability data show that campo rupestre species have a markedly low investment in regeneration from seeds, highlighting the need for specific in situ and ex situ conservation strategies to avoid loss of biodiversity.
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Affiliation(s)
- Roberta L C Dayrell
- Departamento de Botânica, ICB/UFMG, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, Minas Gerais 31270-110, Brazil
| | - Queila S Garcia
- Departamento de Botânica, ICB/UFMG, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, Minas Gerais 31270-110, Brazil
| | - Daniel Negreiros
- Instituto de Ciências Biológicas e Saúde, Centro Universitário UNA, Rua Guajajaras 175, 30180-100 Belo Horizonte, MG, Brazil
| | - Carol C Baskin
- Department of Biology, University of Kentucky, Lexington, KY 40506, USA
- Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY 40546, USA
| | - Jerry M Baskin
- Department of Biology, University of Kentucky, Lexington, KY 40506, USA
| | - Fernando A O Silveira
- Departamento de Botânica, ICB/UFMG, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, Minas Gerais 31270-110, Brazil
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Gelvez-Zúñiga I, Aguirre A, Martén-Rodríguez S, Matos-Gomes V, Barbosa A, Bordignon L, Rocha R, Fernandes GW. Nectar robbing in Collaea cipoensis (Fabaceae), an endemic shrub of the Brazilian rupestrian grasslands. REV MEX BIODIVERS 2016. [DOI: 10.1016/j.rmb.2016.09.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Giannini TC, Giulietti AM, Harley RM, Viana PL, Jaffe R, Alves R, Pinto CE, Mota NFO, Caldeira CF, Imperatriz-Fonseca VL, Furtini AE, Siqueira JO. Selecting plant species for practical restoration of degraded lands using a multiple-trait approach. AUSTRAL ECOL 2016. [DOI: 10.1111/aec.12470] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tereza C. Giannini
- Instituto Tecnológico Vale Desenvolvimento Sustentável; Rua Boaventura da Silva, 955 Belém Pará Brazil
| | - Ana M. Giulietti
- Instituto Tecnológico Vale Desenvolvimento Sustentável; Rua Boaventura da Silva, 955 Belém Pará Brazil
| | - Raymond M. Harley
- Royal Botanic Gardens, Kew; Richmond Surrey UK
- Museu Paraense Emilio Goeldi; Belém Pará Brazil
| | | | - Rodolfo Jaffe
- Instituto Tecnológico Vale Desenvolvimento Sustentável; Rua Boaventura da Silva, 955 Belém Pará Brazil
| | - Ronnie Alves
- Instituto Tecnológico Vale Desenvolvimento Sustentável; Rua Boaventura da Silva, 955 Belém Pará Brazil
- Programa de Pós-Graduação em Ciência da Computação; Universidade Federal do Pará; Belém Pará Brazil
| | - Carlos E. Pinto
- Instituto Tecnológico Vale Desenvolvimento Sustentável; Rua Boaventura da Silva, 955 Belém Pará Brazil
| | - Nara F. O. Mota
- Programa de Capacitação Institucional; Museu Paraense Emílio Goeldi; Coordenação de Botânica; Belém Pará Brazil
| | - Cecílio F. Caldeira
- Instituto Tecnológico Vale Desenvolvimento Sustentável; Rua Boaventura da Silva, 955 Belém Pará Brazil
| | | | - Antonio E. Furtini
- Instituto Tecnológico Vale Desenvolvimento Sustentável; Rua Boaventura da Silva, 955 Belém Pará Brazil
| | - Jose O. Siqueira
- Instituto Tecnológico Vale Desenvolvimento Sustentável; Rua Boaventura da Silva, 955 Belém Pará Brazil
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Lambers H, Finnegan PM, Jost R, Plaxton WC, Shane MW, Stitt M. Phosphorus nutrition in Proteaceae and beyond. NATURE PLANTS 2015; 1:15109. [PMID: 27250542 DOI: 10.1038/nplants.2015.109] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Proteaceae in southwestern Australia have evolved on some of the most phosphorus-impoverished soils in the world. They exhibit a range of traits that allow them to both acquire and utilize phosphorus highly efficiently. This is in stark contrast with many model plants such as Arabidopsis thaliana and crop species, which evolved on soils where nitrogen is the major limiting nutrient. When exposed to low phosphorus availability, these plants typically exhibit phosphorus-starvation responses, whereas Proteaceae do not. This Review explores the traits that account for the very high efficiency of acquisition and use of phosphorus in Proteaceae, and explores which of these traits are promising for improving the phosphorus efficiency of crop plants.
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Affiliation(s)
- H Lambers
- School of Plant Biology and Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley (Perth), Western Australia 6009, Australia
| | - P M Finnegan
- School of Plant Biology and Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley (Perth), Western Australia 6009, Australia
| | - R Jost
- School of Plant Biology and Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley (Perth), Western Australia 6009, Australia
| | - W C Plaxton
- Department of Biology and Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - M W Shane
- School of Plant Biology and Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley (Perth), Western Australia 6009, Australia
| | - M Stitt
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, D-14476 Potsdam-Golm, Germany
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Lambers H, Martinoia E, Renton M. Plant adaptations to severely phosphorus-impoverished soils. CURRENT OPINION IN PLANT BIOLOGY 2015; 25:23-31. [PMID: 25912783 DOI: 10.1016/j.pbi.2015.04.002] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 03/31/2015] [Accepted: 04/03/2015] [Indexed: 05/22/2023]
Abstract
Mycorrhizas play a pivotal role in phosphorus (P) acquisition of plant roots, by enhancing the soil volume that can be explored. Non-mycorrhizal plant species typically occur either in relatively fertile soil or on soil with a very low P availability, where there is insufficient P in the soil solution for mycorrhizal hyphae to be effective. Soils with a very low P availability are either old and severely weathered or relatively young with high concentrations of oxides and hydroxides of aluminium and iron that sorb P. In such soils, cluster roots and other specialised roots that release P-mobilising carboxylates are more effective than mycorrhizas. Cluster roots are ephemeral structures that release carboxylates in an exudative burst. The carboxylates mobilise sparingly-available sources of soil P. The relative investment of biomass in cluster roots and the amount of carboxylates that are released during the exudative burst differ between species on severely weathered soils with a low total P concentration and species on young soils with high total P concentrations but low P availability. Taking a modelling approach, we explore how the optimal cluster-root strategy depends on soil characteristics, thus offering insights for plant breeders interested in developing crop plants with optimal cluster-root strategies.
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Affiliation(s)
- Hans Lambers
- School of Plant Biology and Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley (Perth), Western Australia 6009, Australia.
| | - Enrico Martinoia
- Institute of Plant Biology, University of Zurich, Zollikerstrasse 107, CH-8008 Zürich, Switzerland
| | - Michael Renton
- School of Plant Biology and Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley (Perth), Western Australia 6009, Australia
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Alcantara S, Mello‐Silva R, Teodoro GS, Drequeceler K, Ackerly DD, Oliveira RS. Carbon assimilation and habitat segregation in resurrection plants: a comparison between desiccation‐ and non‐desiccation‐tolerant species of Neotropical Velloziaceae (Pandanales). Funct Ecol 2015. [DOI: 10.1111/1365-2435.12462] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Suzana Alcantara
- Depto. de Botânica Instituto de Biociências Universidade de São Paulo Rua do Matão 277, Cidade Universitária CEP 05508‐090 São Paulo SPBrazil
- Department of Integrative Biology and Jepson Herbarium University of California – Berkeley 3040 Valley Life Sciences Building Zip Code 94720‐3140 Berkeley CaliforniaUSA
| | - Renato Mello‐Silva
- Depto. de Botânica Instituto de Biociências Universidade de São Paulo Rua do Matão 277, Cidade Universitária CEP 05508‐090 São Paulo SPBrazil
| | - Grazielle S. Teodoro
- Depto. de Biologia Vegetal Instituto de Biologia Universidade Estadual de Campinas Caixa Postal 6109 CEP 13083‐970 Campinas SPBrazil
| | - Kamila Drequeceler
- Depto. de Botânica Instituto de Biociências Universidade de São Paulo Rua do Matão 277, Cidade Universitária CEP 05508‐090 São Paulo SPBrazil
| | - David D. Ackerly
- Department of Integrative Biology and Jepson Herbarium University of California – Berkeley 3040 Valley Life Sciences Building Zip Code 94720‐3140 Berkeley CaliforniaUSA
| | - Rafael S. Oliveira
- Depto. de Biologia Vegetal Instituto de Biologia Universidade Estadual de Campinas Caixa Postal 6109 CEP 13083‐970 Campinas SPBrazil
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Morales M, Garcia QS, Munné-Bosch S. Ecophysiological response to seasonal variations in water availability in the arborescent, endemic plant Vellozia gigantea. TREE PHYSIOLOGY 2015; 35:253-65. [PMID: 25769340 DOI: 10.1093/treephys/tpv012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 01/26/2015] [Indexed: 05/12/2023]
Abstract
The physiological response of plants growing in their natural habitat is strongly determined by seasonal variations in environmental conditions and the interaction of abiotic and biotic stresses. Here, leaf water and nutrient contents, changes in cellular redox state and endogenous levels of stress-related phytohormones (abscisic acid (ABA), salicylic acid and jasmonates) were examined during the rainy and dry season in Vellozia gigantea, an endemic species growing at high elevations in the rupestrian fields of the Espinhaço Range in Brazil. Enhanced stomatal closure and increased ABA levels during the dry season were associated with an efficient control of leaf water content. Moreover, reductions in 12-oxo-phytodienoic acid (OPDA) levels during the dry season were observed, while levels of other jasmonates, such as jasmonic acid and jasmonoyl-isoleucine, were not affected. Changes in ABA and OPDA levels correlated with endogenous concentrations of iron and silicon, hydrogen peroxide, and vitamin E, thus indicating complex interactions between water and nutrient contents, changes in cellular redox state and endogenous hormone concentrations. Results also suggested crosstalk between activation of mechanisms for drought stress tolerance (as mediated by ABA) and biotic stress resistance (mediated by jasmonates), in which vitamin E levels may serve as a control point. It is concluded that, aside from a tight ABA-associated regulation of stomatal closure during the dry season, crosstalk between activation of abiotic and biotic defences, and nutrient accumulation in leaves may be important modulators of plant stress responses in plants growing in their natural habitat.
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Affiliation(s)
- Melanie Morales
- Departament de Biologia Vegetal, Facultat de Biologia, Universitat de Barcelona, Avinguda Diagonal 643, E-08028 Barcelona, Spain
| | - Queila S Garcia
- Laboratório de Fisiologia Vegetal, Departamento de Botânica, Universidade Federal de Minas Gerais (UFMG), CP 486, CEP 31270-970, Belo Horizonte, MG, Brazil
| | - Sergi Munné-Bosch
- Departament de Biologia Vegetal, Facultat de Biologia, Universitat de Barcelona, Avinguda Diagonal 643, E-08028 Barcelona, Spain
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