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Robertson GP, Hamilton SK, Paustian K, Smith P. Land-based climate solutions for the United States. GLOBAL CHANGE BIOLOGY 2022; 28:4912-4919. [PMID: 35638387 PMCID: PMC9544421 DOI: 10.1111/gcb.16267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 04/22/2022] [Indexed: 06/15/2023]
Abstract
Meeting end-of-century global warming targets requires aggressive action on multiple fronts. Recent reports note the futility of addressing mitigation goals without fully engaging the agricultural sector, yet no available assessments combine both nature-based solutions (reforestation, grassland and wetland protection, and agricultural practice change) and cellulosic bioenergy for a single geographic region. Collectively, these solutions might offer a suite of climate, biodiversity, and other benefits greater than either alone. Nature-based solutions are largely constrained by the duration of carbon accrual in soils and forest biomass; each of these carbon pools will eventually saturate. Bioenergy solutions can last indefinitely but carry significant environmental risk if carelessly deployed. We detail a simplified scenario for the United States that illustrates the benefits of combining approaches. We assign a portion of non-forested former cropland to bioenergy sufficient to meet projected mid-century transportation needs, with the remainder assigned to nature-based solutions such as reforestation. Bottom-up mitigation potentials for the aggregate contributions of crop, grazing, forest, and bioenergy lands are assessed by including in a Monte Carlo model conservative ranges for cost-effective local mitigation capacities, together with ranges for (a) areal extents that avoid double counting and include realistic adoption rates and (b) the projected duration of different carbon sinks. The projected duration illustrates the net effect of eventually saturating soil carbon pools in the case of most strategies, and additionally saturating biomass carbon pools in the case of forest management. Results show a conservative end-of-century mitigation capacity of 110 (57-178) Gt CO2 e for the U.S., ~50% higher than existing estimates that prioritize nature-based or bioenergy solutions separately. Further research is needed to shrink uncertainties, but there is sufficient confidence in the general magnitude and direction of a combined approach to plan for deployment now.
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Affiliation(s)
- G. Philip Robertson
- W.K. Kellogg Biological StationMichigan State UniversityHickory CornersMichiganUSA
- Department of Plant, Soil, and Microbial SciencesMichigan State UniversityHickory CornersMichiganUSA
- Great Lakes Bioenergy Research CenterMichigan State UniversityEast LansingMichiganUSA
| | - Stephen K. Hamilton
- W.K. Kellogg Biological StationMichigan State UniversityHickory CornersMichiganUSA
- Great Lakes Bioenergy Research CenterMichigan State UniversityEast LansingMichiganUSA
- Department of Integrative BiologyMichigan State UniversityEast LansingMichiganUSA
- Cary Institute of Ecosystem StudiesMillbrookNew YorkUSA
| | - Keith Paustian
- Department of Soil and Crop Sciences and Natural Resource Ecology LaboratoryColorado State UniversityFort CollinsColoradoUSA
| | - Pete Smith
- Institute of Biological and Environmental SciencesUniversity of AberdeenAberdeenUK
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2
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Bhatt P, Thaker V. A comparative study on 193 plastomes of Poaceae for validity and implications of individual barcode genes and concatenated protein coding sequences with selected plastomes of grasses from the desert of India. Meta Gene 2021. [DOI: 10.1016/j.mgene.2021.100921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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3
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Gelfand I, Hamilton SK, Kravchenko AN, Jackson RD, Thelen KD, Robertson GP. Empirical Evidence for the Potential Climate Benefits of Decarbonizing Light Vehicle Transport in the U.S. with Bioenergy from Purpose-Grown Biomass with and without BECCS. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:2961-2974. [PMID: 32052964 DOI: 10.1021/acs.est.9b07019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Climate mitigation scenarios limiting global temperature increases to 1.5 °C rely on decarbonizing vehicle transport with bioenergy production plus carbon capture and storage (BECCS), but climate impacts for producing different bioenergy feedstocks have not been directly compared experimentally or for ethanol vs electric light-duty vehicles. A field experiment at two Midwest U.S. sites on contrasting soils revealed that feedstock yields of seven potential bioenergy cropping systems varied substantially within sites but little between. Bioenergy produced per hectare reflected yields: miscanthus > poplar > switchgrass > native grasses ≈ maize stover (residue) > restored prairie ≈ early successional. Greenhouse gas emission intensities for ethanol vehicles ranged from 20 to -179 g CO2e MJ-1: maize stover ≫ miscanthus ≈ switchgrass ≈ native grasses ≈ poplar > early successional ≥ restored prairie; direct climate benefits ranged from ∼80% (stover) to 290% (restored prairie) reductions in CO2e compared to petroleum and were similar for electric vehicles. With carbon capture and storage (CCS), reductions in emission intensities ranged from 204% (stover) to 416% (restored prairie) for ethanol vehicles and from 329 to 558% for electric vehicles, declining 27 and 15%, respectively, once soil carbon equilibrates within several decades of establishment. Extrapolation based on expected U.S. transportation energy use suggests that, once CCS potential is maximized with CO2 pipeline infrastructure, negative emissions from bioenergy with CCS for light-duty electric vehicles could capture >900 Tg CO2e year-1 in the U.S. In the future, as other renewable electricity sources become more important, electricity production from biomass would offset less fossil fuel electricity, and the advantage of electric over ethanol vehicles would decrease proportionately.
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Affiliation(s)
- Ilya Gelfand
- Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, Michigan 48824, United States
- W.K. Kellogg Biological Station, Michigan State University, Hickory Corners, Michigan 49060, United States
- The French Associates Institute for Agriculture and Biotechnology of Drylands, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Beer-Sheva 84990, Israel
| | - Stephen K Hamilton
- Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, Michigan 48824, United States
- W.K. Kellogg Biological Station, Michigan State University, Hickory Corners, Michigan 49060, United States
- Department of Integrative Biology, Michigan State University, East Lansing, Michigan 48824, United States
- Cary Institute of Ecosystem Studies, Millbrook, New York 12545, United States
| | - Alexandra N Kravchenko
- Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, Michigan 48824, United States
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, Michigan 48824, United States
| | - Randall D Jackson
- Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
- Department of Agronomy, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Kurt D Thelen
- Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, Michigan 48824, United States
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, Michigan 48824, United States
| | - G Philip Robertson
- Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, Michigan 48824, United States
- W.K. Kellogg Biological Station, Michigan State University, Hickory Corners, Michigan 49060, United States
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, Michigan 48824, United States
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4
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Yang Y, Tilman D, Furey G, Lehman C. Soil carbon sequestration accelerated by restoration of grassland biodiversity. Nat Commun 2019; 10:718. [PMID: 30755614 PMCID: PMC6372642 DOI: 10.1038/s41467-019-08636-w] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 01/08/2019] [Accepted: 01/18/2019] [Indexed: 11/09/2022] Open
Abstract
Agriculturally degraded and abandoned lands can remove atmospheric CO2 and sequester it as soil organic matter during natural succession. However, this process may be slow, requiring a century or longer to re-attain pre-agricultural soil carbon levels. Here, we find that restoration of late-successional grassland plant diversity leads to accelerating annual carbon storage rates that, by the second period (years 13–22), are 200% greater in our highest diversity treatment than during succession at this site, and 70% greater than in monocultures. The higher soil carbon storage rates of the second period (years 13–22) are associated with the greater aboveground production and root biomass of this period, and with the presence of multiple species, especially C4 grasses and legumes. Our results suggest that restoration of high plant diversity may greatly increase carbon capture and storage rates on degraded and abandoned agricultural lands. Abandoned and degraded agricultural lands undergo ecological succession that sequesters atmospheric CO2 as soil carbon, but at low rates. Here the authors show that restoration of high plant diversity provides a greenhouse gas benefit by greatly increasing the rate of soil carbon sequestration on such lands.
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Affiliation(s)
- Yi Yang
- Department of Ecology, Evolution, and Behavior, University of Minnesota, St. Paul, MN, 55108, USA
| | - David Tilman
- Department of Ecology, Evolution, and Behavior, University of Minnesota, St. Paul, MN, 55108, USA. .,Bren School of Environmental Science and Management, University of California, Santa Barbara, CA, 93106, USA.
| | - George Furey
- Department of Ecology, Evolution, and Behavior, University of Minnesota, St. Paul, MN, 55108, USA
| | - Clarence Lehman
- Department of Ecology, Evolution, and Behavior, University of Minnesota, St. Paul, MN, 55108, USA
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5
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Muthukrishnan R, Jordan NR, Davis AS, Forester JD. Use of simulation-based statistical models to complement bioclimatic models in predicting continental scale invasion risks. Biol Invasions 2018. [DOI: 10.1007/s10530-018-1864-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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Muthukrishnan R, Davis AS, Jordan NR, Forester JD. Invasion complexity at large spatial scales is an emergent property of interactions among landscape characteristics and invader traits. PLoS One 2018; 13:e0195892. [PMID: 29771923 PMCID: PMC5957392 DOI: 10.1371/journal.pone.0195892] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 04/02/2018] [Indexed: 12/02/2022] Open
Abstract
Invasion potential should be part of the evaluation of candidate species for any species introduction. However, estimating invasion risks remains a challenging problem, particularly in complex landscapes. Certain plant traits are generally considered to increase invasive potential and there is an understanding that landscapes influence invasions dynamics, but little research has been done to explore how those drivers of invasions interact. We evaluate the relative roles of, and potential interactions between, plant invasiveness traits and landscape characteristics on invasions with a case study using a model parameterized for the potentially invasive biomass crop, Miscanthus × giganteus. Using that model we simulate invasions on 1000 real landscapes to evaluate how landscape characteristics, including both composition and spatial structure, affect invasion outcomes. We conducted replicate simulations with differing strengths of plant invasiveness traits (dispersal ability, establishment ability, population growth rate, and the ability to utilize dispersal corridors) to evaluate how the importance of landscape characteristics for predicting invasion patterns changes depending on the invader details. Analysis of simulations showed that the presence of highly suitable habitat (e.g., grasslands) is generally the strongest determinant of invasion dynamics but that there are also more subtle interactions between landscapes and invader traits. These effects can also vary between different aspects of invasion dynamics (short vs. long time scales and population size vs. spatial extent). These results illustrate that invasions are complex emergent processes with multiple drivers and effective management needs to reflect the ecology of the species of interest and the particular goals or risks for which efforts need to be optimized.
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Affiliation(s)
- Ranjan Muthukrishnan
- Department of Fisheries, Wildlife, and Conservation Biology, University of Minnesota, St. Paul, Minnesota, United States of America
- * E-mail:
| | - Adam S. Davis
- Global Change and Photosynthesis Research Unit, USDA-ARS, Urbana, Illinois, United States of America
| | - Nicholas R. Jordan
- Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, Minnesota, United States of America
| | - James D. Forester
- Department of Fisheries, Wildlife, and Conservation Biology, University of Minnesota, St. Paul, Minnesota, United States of America
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7
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Robertson GP, Hamilton SK, Barham BL, Dale BE, Izaurralde RC, Jackson RD, Landis DA, Swinton SM, Thelen KD, Tiedje JM. Cellulosic biofuel contributions to a sustainable energy future: Choices and outcomes. Science 2018; 356:356/6345/eaal2324. [PMID: 28663443 DOI: 10.1126/science.aal2324] [Citation(s) in RCA: 243] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Cellulosic crops are projected to provide a large fraction of transportation energy needs by mid-century. However, the anticipated land requirements are substantial, which creates a potential for environmental harm if trade-offs are not sufficiently well understood to create appropriately prescriptive policy. Recent empirical findings show that cellulosic bioenergy concerns related to climate mitigation, biodiversity, reactive nitrogen loss, and crop water use can be addressed with appropriate crop, placement, and management choices. In particular, growing native perennial species on marginal lands not currently farmed provides substantial potential for climate mitigation and other benefits.
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Affiliation(s)
- G Philip Robertson
- W. K. Kellogg Biological Station, Michigan State University, Hickory Corners, MI 49060, USA. .,Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, USA.,Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI 48824, USA
| | - Stephen K Hamilton
- W. K. Kellogg Biological Station, Michigan State University, Hickory Corners, MI 49060, USA.,Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI 48824, USA.,Department of Integrative Biology, Michigan State University, East Lansing, MI 48824, USA
| | - Bradford L Barham
- Department of Agricultural and Applied Economics, University of Wisconsin, Madison, WI 53706, USA.,Great Lakes Bioenergy Research Center, University of Wisconsin, Madison, WI 53706, USA
| | - Bruce E Dale
- Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI 48824, USA.,Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI 48824, USA
| | - R Cesar Izaurralde
- Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI 48824, USA.,Department of Geographical Sciences, University of Maryland, College Park, MD 20742, USA.,Texas AgriLife Research, Texas A&M University, Temple, TX 76502, USA
| | - Randall D Jackson
- Great Lakes Bioenergy Research Center, University of Wisconsin, Madison, WI 53706, USA.,Department of Agronomy, University of Wisconsin, Madison, WI 53706, USA
| | - Douglas A Landis
- Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI 48824, USA.,Department of Entomology, Michigan State University, East Lansing, MI 48824, USA
| | - Scott M Swinton
- Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI 48824, USA.,Department of Agricultural, Food, and Resource Economics, Michigan State University, East Lansing, MI 48824, USA
| | - Kurt D Thelen
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, USA.,Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI 48824, USA
| | - James M Tiedje
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, USA.,Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI 48824, USA.,Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824, USA
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8
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West NM, Matlaga DP, Muthukrishnan R, Spyreas G, Jordan NR, Forester JD, Davis AS. Lack of Impacts during Early Establishment Highlights a Short-Term Management Window for Minimizing Invasions from Perennial Biomass Crops. FRONTIERS IN PLANT SCIENCE 2017; 8:767. [PMID: 28555146 PMCID: PMC5430074 DOI: 10.3389/fpls.2017.00767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 04/24/2017] [Indexed: 06/07/2023]
Abstract
Managing intentional species introductions requires evaluating potential ecological risks. However, it is difficult to weigh costs and benefits when data about interactions between novel species and the communities they are introduced to are scarce. In anticipation of expanded cultivation of perennial biomass crops, we experimentally introduced Miscanthus sinensis and Miscanthus × giganteus (two non-native candidate biomass crops) into two different non-crop habitats (old field and flood-plain forest) to evaluate their establishment success and impact on ambient local communities. We followed these controlled introductions and the composition dynamics of the receiving communities over a 5-year period. Habitats differed widely in adult Miscanthus survival and reproduction potential between species, although seed persistence and seedling emergence were similar in the two biomass crops in both habitats. Few introductions survived in the floodplain forest habitat, and this mortality precluded analyses of their potential impacts there. In old field habitats, proportional survival ranged from 0.3 to 0.4, and plant survival and growth increased with age. However, there was no evidence of biomass crop species effects on community richness or evenness or strong impacts on the resident old field constituents across 5 years. These results suggest that Miscanthus species could establish outside of cultivated fields, but there will likely be a lag in any impacts on the receiving communities. Local North American invasions by M. sinensis and M. sacchariflorus display the potential for Miscanthus species to develop aggressively expanding populations. However, the weak short-term community-level impacts demonstrated in the current study indicate a clear management window in which eradicating species footholds is easily achieved, if they can be detected early enough. Diligent long-term monitoring, detection, and eradication plans are needed to successfully minimize harmful invasions from these biomass crops.
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Affiliation(s)
- Natalie M. West
- Pest Management Research Unit, United States Department of Agriculture – Agricultural Research Service, SidneyMT, USA
- Global Change and Photosynthesis Research Unit, United States Department of Agriculture – Agricultural Research Service, UrbanaIL, USA
| | - David P. Matlaga
- Global Change and Photosynthesis Research Unit, United States Department of Agriculture – Agricultural Research Service, UrbanaIL, USA
- Department of Biology, Susquehanna University, SelinsgrovePA, USA
| | - Ranjan Muthukrishnan
- Department of Fisheries, Wildlife, and Conservation Biology, University of Minnesota, St. PaulMN, USA
| | - Greg Spyreas
- Prairie Research Institute, Illinois Natural History Survey, ChampaignIL, USA
| | - Nicholas R. Jordan
- Department of Agronomy and Plant Genetics, University of Minnesota, St. PaulMN, USA
| | - James D. Forester
- Department of Fisheries, Wildlife, and Conservation Biology, University of Minnesota, St. PaulMN, USA
| | - Adam S. Davis
- Global Change and Photosynthesis Research Unit, United States Department of Agriculture – Agricultural Research Service, UrbanaIL, USA
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9
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West NM, Matlaga DP, Muthukrishnan R, Spyreas G, Jordan NR, Forester JD, Davis AS. Lack of Impacts during Early Establishment Highlights a Short-Term Management Window for Minimizing Invasions from Perennial Biomass Crops. FRONTIERS IN PLANT SCIENCE 2017; 8:767. [PMID: 28555146 PMCID: PMC5430074 DOI: 10.3389/fpls.2017.00767, 10.3389/fphys.2017.00767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 04/24/2017] [Indexed: 06/12/2023]
Abstract
Managing intentional species introductions requires evaluating potential ecological risks. However, it is difficult to weigh costs and benefits when data about interactions between novel species and the communities they are introduced to are scarce. In anticipation of expanded cultivation of perennial biomass crops, we experimentally introduced Miscanthus sinensis and Miscanthus × giganteus (two non-native candidate biomass crops) into two different non-crop habitats (old field and flood-plain forest) to evaluate their establishment success and impact on ambient local communities. We followed these controlled introductions and the composition dynamics of the receiving communities over a 5-year period. Habitats differed widely in adult Miscanthus survival and reproduction potential between species, although seed persistence and seedling emergence were similar in the two biomass crops in both habitats. Few introductions survived in the floodplain forest habitat, and this mortality precluded analyses of their potential impacts there. In old field habitats, proportional survival ranged from 0.3 to 0.4, and plant survival and growth increased with age. However, there was no evidence of biomass crop species effects on community richness or evenness or strong impacts on the resident old field constituents across 5 years. These results suggest that Miscanthus species could establish outside of cultivated fields, but there will likely be a lag in any impacts on the receiving communities. Local North American invasions by M. sinensis and M. sacchariflorus display the potential for Miscanthus species to develop aggressively expanding populations. However, the weak short-term community-level impacts demonstrated in the current study indicate a clear management window in which eradicating species footholds is easily achieved, if they can be detected early enough. Diligent long-term monitoring, detection, and eradication plans are needed to successfully minimize harmful invasions from these biomass crops.
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Affiliation(s)
- Natalie M. West
- Pest Management Research Unit, United States Department of Agriculture – Agricultural Research Service, SidneyMT, USA
- Global Change and Photosynthesis Research Unit, United States Department of Agriculture – Agricultural Research Service, UrbanaIL, USA
| | - David P. Matlaga
- Global Change and Photosynthesis Research Unit, United States Department of Agriculture – Agricultural Research Service, UrbanaIL, USA
- Department of Biology, Susquehanna University, SelinsgrovePA, USA
| | - Ranjan Muthukrishnan
- Department of Fisheries, Wildlife, and Conservation Biology, University of Minnesota, St. PaulMN, USA
| | - Greg Spyreas
- Prairie Research Institute, Illinois Natural History Survey, ChampaignIL, USA
| | - Nicholas R. Jordan
- Department of Agronomy and Plant Genetics, University of Minnesota, St. PaulMN, USA
| | - James D. Forester
- Department of Fisheries, Wildlife, and Conservation Biology, University of Minnesota, St. PaulMN, USA
| | - Adam S. Davis
- Global Change and Photosynthesis Research Unit, United States Department of Agriculture – Agricultural Research Service, UrbanaIL, USA
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10
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Burke SV, Wysocki WP, Zuloaga FO, Craine JM, Pires JC, Edger PP, Mayfield-Jones D, Clark LG, Kelchner SA, Duvall MR. Evolutionary relationships in Panicoid grasses based on plastome phylogenomics (Panicoideae; Poaceae). BMC PLANT BIOLOGY 2016; 16:140. [PMID: 27316745 PMCID: PMC4912804 DOI: 10.1186/s12870-016-0823-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 05/27/2016] [Indexed: 05/08/2023]
Abstract
BACKGROUND Panicoideae are the second largest subfamily in Poaceae (grass family), with 212 genera and approximately 3316 species. Previous studies have begun to reveal relationships within the subfamily, but largely lack resolution and/or robust support for certain tribal and subtribal groups. This study aims to resolve these relationships, as well as characterize a putative mitochondrial insert in one linage. RESULTS 35 newly sequenced Panicoideae plastomes were combined in a phylogenomic study with 37 other species: 15 Panicoideae and 22 from outgroups. A robust Panicoideae topology largely congruent with previous studies was obtained, but with some incongruences with previously reported subtribal relationships. A mitochondrial DNA (mtDNA) to plastid DNA (ptDNA) transfer was discovered in the Paspalum lineage. CONCLUSIONS The phylogenomic analysis returned a topology that largely supports previous studies. Five previously recognized subtribes appear on the topology to be non-monophyletic. Additionally, evidence for mtDNA to ptDNA transfer was identified in both Paspalum fimbriatum and P. dilatatum, and suggests a single rare event that took place in a common progenitor. Finally, the framework from this study can guide larger whole plastome sampling to discern the relationships in Cyperochloeae, Steyermarkochloeae, Gynerieae, and other incertae sedis taxa that are weakly supported or unresolved.
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Affiliation(s)
- Sean V Burke
- Department of Biological Sciences, Northern Illinois University, 1425 W. Lincoln Hwy, DeKalb, IL, 60115-2861, USA.
| | - William P Wysocki
- Department of Biological Sciences, Northern Illinois University, 1425 W. Lincoln Hwy, DeKalb, IL, 60115-2861, USA
| | - Fernando O Zuloaga
- Instituto de Botánica Darwinion, Labardén 200, Casilla de Correo 22, B1642HYD, San Isidro, Buenos Aires, Argentina
| | | | - J Chris Pires
- Biological Sciences, University of Missouri, 371b Bond Life Sciences Center, Columbia, MO, 65211, USA
| | - Patrick P Edger
- Department of Horticulture, Michigan State University, East Lansing, MI, 48823, USA
| | - Dustin Mayfield-Jones
- Donald Danforth Plant Science Center, 975 North Warson Rd, St. Louis, MO, 63132, USA
| | - Lynn G Clark
- Ecology, Evolution and Organismal Biology, 251 Bessey Hall, Iowa State University, Ames, IA, 50011-1020, USA
| | - Scot A Kelchner
- Biological Sciences, Idaho State University, 921 S. 8th Ave, Pocatello, ID, 83209-8007, USA
| | - Melvin R Duvall
- Department of Biological Sciences, Northern Illinois University, 1425 W. Lincoln Hwy, DeKalb, IL, 60115-2861, USA
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11
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Muthukrishnan R, West NM, Davis AS, Jordan NR, Forester JD. Evaluating the role of landscape in the spread of invasive species: The case of the biomass crop Miscanthus×giganteus. Ecol Modell 2015. [DOI: 10.1016/j.ecolmodel.2015.08.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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