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The future of sustainable human health and agriculture rests on our ability to view microbial evolution as part of the solution rather than the problem. MARSVOVO Men's Training Sneakers Athletic Sports Running shoes Breathable Causal Work shoes Red Size 12The Koskella lab takes on this challenge by combining discovery-based science on plant microbiomes with hypothesis-driven experimentation. Our research examines host-microbe and microbe-microbe interactions by first identifying patterns in nature and then, in line with current theory where available,DANIELE ALESSANDRINI Scarpa Basse FIBBIE F7178KL4633606Alpine Swiss Men's Leather Lined Dressy Ankle Boots Reebok Womens Cl Lthr NBK SneakerCambridge Select Women's Cutout Crystal Rhinestone Platform Mid Heel Dress Sandalgenerating predictions to explicitly test in the laboratory using a combination of experimental evolution, microbial ecology approaches, CAMEL Running shoes Women Men Lightweight Fashion Sneakers Walking Footwear Tennis Athletic shoes Slip-On for Outdoor Sport Gym Joggingand molecular biological techniques.
We focus primarily on how plant-microbiome, plant-pathogen, and bacteria-phage interactions occur, both as model systems for understanding fundamental principles and with the aim of leveraging these findings for design of novel disease management strategies. Steve Madden Womens Kolina Ankle BootieMark Nason Mens Draper OxfordWe integrate ecological and evolutionary thinking with cutting-edge microbiological and molecular approaches to gain insight to microbiome establishment and function, within-microbiome interactions, and the role that microbiota and phages play in shaping disease. For more information on ongoing research projects, look here.
The Koskella lab at our end-of-semester lab lunch (May 2019)
A brief introduction to the lab and our recent research:
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I am an evolutionary ecologist interested in how species interactions influence genetic diversity within populations, diversity between populations, and species diversity at the community level. By combining evolutionary theory on coevolution, population dynamics, and infection genetics,GLOBALWIN GW M1663-6 Loafers shoes 12 M Dark GreyJiYe Fashion High Top Sneakers MenEnzo Romeo DF01 Men Dress Loafers with Alligator Prints Lace up Oxfords Patent Dress shoesWilson Men's Rush Pro Tennis shoes - Pool White Silver (7) I directly test the underlying assumptions and predicted outcomes of host-pathogen and microbial interactions through the lens of human health and agricultural sustainability.
My previous work was primarily focused on host – parasite coevolution; first between a smut fungus and a plant (e.g. Lovirs Womens Sexy High Heel Pointy Toe Slip On Pumps Wedding Evening Stiletto shoes), then a trematode and a snail (e.g. GLOBALWIN Women's 1632 Black Grey Snow Boots (6.5(M) US Women, 1706Black Print)), and most recently between bacteriophage viruses and the bacteria they infect, which are themselves parasites of plants (e.g. if phages are locally adapted to bacteria, PUMA Mens Suede Classic Bboy Fabulous Casual Athletic & Sneakers Redand Frye Womens Ilana Shootie Boot). The types of fundamental questions I’ve address are:
1) How do pathogens/parasites adapt to better infect their hosts? And at what scale / speed are they capable of adapting?
Meaden, S., & Koskella, B. (2017). Adaptation of the pathogen, Pseudomonas syringae, Men's Genuine Leather Oxfords Dress Ankle Boots with ZipperECCO Mens Soft 8 Hightop Sneakersduring experimental evolution on a native vs. alternative host plant. Molecular ecology, 26(7), 1790-1801.
Koskella, B. (2014). Bacteria-phage interactions across time and space: merging local adaptation and time-shift experiments to understand phage evolution. The American Naturalist, 184(S1), S9-S21.
Koskella, B., Thompson, J. N., Preston, G. M., & Buckling, A. (2011). Felix Chu Men's Classic Formal Dress shoes Men Buckle Leather shoes Oxford shoes for Men BrownAdidas Explosive Flash shoes Kid's Basketball BlackLocal biotic environment shapes the spatial scale of bacteriophage adaptation to bacteria. The American Naturalist, 177(4), 440-451.
Greischar, M. A., & Koskella, B. (2007). A synthesis of experimental work on parasite local adaptation. Ecology Letters, 10(5), 418-434.
2) How do hosts respond to this adaptation (i.e. coevolve) and become more resistant to their local pathogens/parasites? Salming T1 Women's Trail Running shoesCorso Como Womens Coral Slide SandalAnd are they paying a significant cost for this evolved resistance?Proven Pain Relief Plantar Fasciitis Orthopedic Comfortable Diabetic Flat Feet Mens Walking shoes Youth Business England Casual Men's Lace-Up shoesMen Winter Snow Boots Warm Leather Fur Lined Non Slip Casual Outdoor Boots High Rise shoes Lace Up Trekking shoes Size：38-47.
Koskella, B., & Parr, N. (2015). The evolution of bacterial resistance against bacteriophages in the horse chestnut phyllosphere is general across both space and time. Phil. Trans. R. Soc. B, 370(1675), 20140297.
Meaden, S., Paszkiewicz, K., & Koskella, B. (2015). The cost of phage resistance in a plant pathogenic bacterium is context‐dependent. Evolution, 69(5), 1321-1328.
Koskella, B. (2013). Phage-mediated selection on microbiota of a long-lived host. Current Biology, 23(13), 1256-1260.
Koskella, B., Lin, D. M., Buckling, A., & Thompson, J. N. (2011).Nike Women's Air Zoom Structure 20 849577-501HAPPYSHOP(TM Genuine Leather Lace up Wingtip Ankle Boots Casual shoes Men Brogue shoes Martin Boots Black Men's Leather shoes Sring Fall, Loafers Loafers & Slip-Ons Driving shoes,Casual Breathable,Comfort Party & Evening Formal Business Work (color B, Size 41)Nike MercurialX Finale II IC Mens Soccer-shoes 831974The costs of evolving resistance in heterogeneous parasite environments. Proceedings of the Royal Society of London B: Biological Sciences, rspb20112259.
3) Can antagonistic coevolution lead to increased diversity? For example, do pathogens/parasites preferentially target common hosts (i.e. the hosts that are the most fit) and therefore impose a rare-host advantage?
Morella, N. M., Gomez, A. L., Wang, G., Leung, M. S., & Koskella, B. (2018). The impact of bacteriophages on phyllosphere bacterial abundance and composition. Molecular ecology, 27(8), 2025-2038.
Koskella, B., & Lively, C. M. (2009). Evidence for negative frequency‐dependent selection during experimental coevolution of a freshwater snail and a sterilizing trematode. Evolution: International Journal of Organic Evolution, 63(9), 2213-2221.
and 4) Does this coevolution among hosts and parasites matter to human health, agriculture, and conservation? Can we use our understanding about when and how pathogens and commensals evolve to design better treatments and to predict and prevent the spread of diseases?
Koskella, B., & Taylor, T. B. (2018). Multifaceted impacts of bacteriophages in the plant microbiome. Annual review of phytopathology, 56, 361-380.
Lin, D., & Koskella, B. (2015). Friend and foe: Betsey Johnson bluee Women's SB-Jude Ballet FlatStacy Adams Men's Armistice 53380 Blackfactors influencing the movement of the bacterium Helicobacter pylori along the parasitism–mutualism continuum. Evolutionary applications, 8(1), 9-22.
Meaden, S., & Koskella, B. (2013). Exploring the risks of phage application in the environment. Frontiers in microbiology, 4, 358.
So far, the body of evidence produced by the scientific community over decades of work suggests that parasites can evolve rapidly and specifically to infect their hosts, but that this doesn’t always mean they get more harmful or even better at infecting.HAPPYSHOP(TM New Comfort Mens Dress shoes Formal Lace up Oxfords Classic Leather Casual BlackXHD- Classic shoes Men's Comfortable Fashion Design Soft Casual Moccasins Slip On Driving Loafer Slipper (color Red Brown Hollow Vamp, Size 6 D(M) US) There is also clear evidence that hosts respond by evolving increased resistance, and that this often comes at a cost such as decreased growth or reproduction. This ongoing coevolution, in which neither parasite nor host is winning the battle has been called ‘Red Queen’ dynamics, based on the idea from “Alice Through the Looking Glass” that you have to run as fast as you can just to stay in the same placeSpring Step Men Rylan shoes color Medium Brown Leather shoesLacoste Lerond 318 3 Red.Coolloog Mens Snow Boots Women Winter High Boots Waterproof Non Slip Warm Fur LinedAdidas Men's Cloudfoam Flow 2.0 Solar bluee2 White Night Grey Sneaker 7 D (M) At last these ideas are beginning to be incorporated into the design and use of drug treatments (sometimes referred to as Darwinian Medicine) and used to build predictive models of disease spread in our increasingly-connected world. My work has taken advantage of a very powerful approach to address these questions by experimentally evolving hosts and parasites in the laboratory, Johnston & Murphy Womens Vanessa Dress PumpKIIU Mens Closed Toe Sandals Sport Hiking Sandal Athletic Walking Sandals Fishermen Outdoortherefore controlling for all the other “noise” out there in nature (Lady Boots Winter Women Non-Slip Bow Flat Platform Warm Snow Casual Single shoes Fashion Leisure Elegant Cosy Wild Tight Super Quality for Womens).Hi-Tec Mens Wildlife Lux WP Hiking BootsPUMA Men's EL Ace Leather Handcrafted Classic Sneaker However,Dr. Martens Mens Sussex Chukka BootSupra Mens 2016 Ellington Strap shoes I always try to go back to nature’s microcosm to find out whether what holds true in the lab can be used to explain what we see in the real world.Globe Encore 2 - ENCORECHARCOAL