COLLABORATIVE RESEARCH: Genetics and Development of Parallel Pollination System Evolution in Penstemon
COLLABORATIVE RESEARCH: Genetics and Development of Parallel Pollination System Evolution in Penstemon
批准号:
1555434
负责人:
Mark Rausher
金额:
$24.95万
依托单位:
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
2016
资助国家:
美国
项目状态:
已结题
起止时间:
2016-03-01 至 2021-02-28
中文摘要
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英文摘要
This project examines the extent to which evolutionary change is predictable. In particular, it will test the hypothesis that different species that evolve similar characteristics do so by changes in the same genes. This hypothesis will be examined using species in the plant genus Penstemon that have independently evolved a similar suite of floral characters (e.g. long, narrow flowers, increased nectar production, lengthening of the reproductive organs) in response to pollination by hummingbirds. If this hypothesis is true, then in different hummingbird-pollinated species, genes affecting a given character should be located at similar positions in the genome. The project will test this expectation using genetic and genomic approaches applied to four hummingbird-pollinated species and closely related species pollinated by bees. In addition, this research will determine the developmental basis (e.g. changes in cell size or cell proliferation) for the character changes. In examining the main hypothesis, the project will sequence the genomes of three Penstemon species and provide genetic maps. These resources will be made available to the scientific community. The project will provide training for one postdoc and several graduate students in molecular and genomic techniques, as well as in bioinformatics and statistical analysis. Finally, it will introduce undergraduate students to the sciences of evolutionary biology and genomics through internships and independent study with the PI and co-PI of the project, with a focus on minority student participation.This project examines parallelism across different hierarchical levels (developmental vs. genetic), across different trait types within the pollination syndrome (quantitative vs. qualitative traits), and across different origins of flowers adapted to hummingbird pollination. In doing so, it will provide the first extensive data specifically designed to determine the extent to which parallel phenotypic evolution of a complex multi-trait syndrome, comprised of multiple quantitative characters, evolved by parallel genetic and developmental mechanisms. Penstemon species pairs representing four independent transitions from bee to hummingbird pollination floral syndromes will provide the foundation of this research. For each of the four species pairs, the developmental differences that lead to divergent bee and hummingbird-adapted floral morphologies will be assessed to determine whether differences reflect parallel developmental processes. For the same four species pairs, genetic mapping combined with genome sequencing will be used to assess whether quantitative floral trait loci identified in independent transitions to hummingbird pollination correspond to homologous genomic regions containing the same set of homologous candidate genes, suggestive that parallelism extends to the genetic level. As few studies have examined genetic parallelism in quantitative traits, the project includes the development of a novel 'genetic parallelism score' to quantify the degree of genetic parallelism for both quantitative and qualitative traits. Lastly, by quantifying developmental parameters in genetic lines derived from the mapping study, the project will link genetic and developmental processes by determining how fixed genetic differences between bee- and hummingbird-adapted species alter the specific developmental processes that contribute to divergent floral traits.
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DIMENSIONS: COLLABORATIVE RESEARCH: The evolution of pollination syndrome diversity in Penstemon
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批准号:1542387
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项目类别:Continuing Grant
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资助金额:$99.9万
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财政年份:2015
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负责人:Mark Rausher
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依托单位:
DISSERTATION RESEARCH: How is the Selfing Syndrome Assembled? A Common Garden Fitness Study of its Component Parts
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批准号:1501954
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项目类别:Standard Grant
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资助金额:$2.06万
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财政年份:2015
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负责人:Mark Rausher
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依托单位:
DISSERTATION RESEARCH: Genetic basis of parallel flower color shifts in Penstemon
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批准号:1010886
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项目类别:Standard Grant
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资助金额:$1.5万
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财政年份:2010
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负责人:Mark Rausher
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依托单位:
DISSERTATION RESEARCH: Genetic Architecture of Resistance in a Coevolving Plant-Fungus Pathosystem
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批准号:0909946
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项目类别:Standard Grant
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资助金额:$1.14万
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财政年份:2009
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负责人:Mark Rausher
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依托单位:
Genetics and Evolution of Reproductive Character Displacement in Phlox drumondii
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批准号:0841521
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项目类别:Continuing Grant
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资助金额:$100.0万
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财政年份:2009
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负责人:Mark Rausher
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依托单位:
DISSERTATION RESEARCH: An investigation of pleiotropy as an adaptive constraint using flower color change in Phlox
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批准号:0909927
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项目类别:Standard Grant
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资助金额:$1.35万
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财政年份:2009
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负责人:Mark Rausher
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依托单位:
Genetic Change Associated with Flower-Color Adaptation in Morning
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批准号:0448889
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项目类别:Continuing Grant
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资助金额:$66.7万
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财政年份:2005
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负责人:Mark Rausher
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依托单位:
DISSERTATION RESEARCH: Evolutionary Fate of Gene Duplications in Morning Glories (Ipomoea)
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批准号:0411807
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项目类别:Standard Grant
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资助金额:$0.0万
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财政年份:2004
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负责人:Mark Rausher
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依托单位:
DISSERTATION RESEARCH: Assessing the General Importance of Frequency-Dependent Selection in Plant Breeding Systems.
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批准号:0407838
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项目类别:Standard Grant
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资助金额:$1.15万
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财政年份:2004
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负责人:Mark Rausher
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依托单位:
DISSERTATION RESEARCH: Pollinator-mediated Interspecific Competition in Ipomoea
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批准号:0308923
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项目类别:Standard Grant
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资助金额:$1.15万
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财政年份:2003
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负责人:Mark Rausher
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依托单位:
Dissertation Research: Genetic Architecture of Flower-color Differences in Ipomoea Species
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批准号:0206009
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项目类别:Standard Grant
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资助金额:$0.86万
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财政年份:2002
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负责人:Mark Rausher
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依托单位:
Dissertation Research: Anthocyanin Biosynthesis and the Evolution of Red-Flowered Ipomoea
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批准号:0105056
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项目类别:Standard Grant
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资助金额:$0.9万
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财政年份:2001
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负责人:Mark Rausher
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依托单位:
Molecular Evolution of Anthocyanin Pathway Genes in Morning Glories (Ipomoea)
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批准号:0110596
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项目类别:Continuing Grant
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资助金额:$44.4万
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财政年份:2001
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负责人:Mark Rausher
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依托单位:
Dissertation Research: Evolution of a Disease-resistance Polymorphism in Ipomoea purpurea
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批准号:0107172
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项目类别:Standard Grant
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资助金额:$0.88万
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财政年份:2001
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负责人:Mark Rausher
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依托单位:
Dissertation Research: Ecological and Evolutionary Constraints to Herbivore Resistance in a Native Plant - Mulitiple Herbivore Community
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批准号:0073176
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项目类别:Standard Grant
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资助金额:$1.0万
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财政年份:2000
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负责人:Mark Rausher
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依托单位:
Dissertation Research: The Evolution of Mutualism and Cost-Benefit Analysis: Selection on Extrafloral Nectar Traits of Chamaecrista Fasciculata
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批准号:9800876
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项目类别:Standard Grant
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资助金额:$0.57万
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财政年份:1998
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负责人:Mark Rausher
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依托单位:
Optimal Reaction Norms and Genetic Constraints in the Evolution of Plant Size in Ipomoea purpurea
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批准号:9707223
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项目类别:Continuing Grant
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资助金额:$32.99万
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财政年份:1997
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负责人:Mark Rausher
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依托单位:
Dissertation Research: Natural Selection and Genetic Constraints on the Evolution of Tolerance to Herbivore Damage in Ipomoea purpurea
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批准号:9701330
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项目类别:Standard Grant
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资助金额:$0.67万
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财政年份:1997
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负责人:Mark Rausher
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依托单位:
The Effect of Induced Resistance on Herbivore Population Dynamics
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批准号:9615227
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项目类别:Standard Grant
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资助金额:$14.6万
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财政年份:1997
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负责人:Mark Rausher
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依托单位:
Dissertation Research: Maintenance of a Leaf Shape Polymorphism in Ipomoea Hederacea
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批准号:9624051
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项目类别:Standard Grant
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资助金额:$0.8万
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财政年份:1996
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负责人:Mark Rausher
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依托单位:
国内基金
海外基金
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