Publications

Dr. Julie LaRoche, Professor

Recent Publications:

Bannon CC, Soto MA, Rowland E, Chen N, Gleason A, Devred E, LaRoche J, Bertrand EM. 2024. Production and utilization of pseudocobalamin in marine听Synechococcus听cultures and communities. Environmental Microbiology 26(10): e16701. 听

Raes EJ, Myles S, MacNeil L, Wietz N, Bienhold C, Tait K, Somerfield PJ, Bissett A, van de Kamp J, Gasol JM, Massana R, Yeh Y-C, Fuhrman JA, LaRoche J. 2024. Seasonal patterns of microbial diversity across the world oceans.听Limnology and Oceanography Letters 9(5): 512-523.听

LaRoche J, Archibald JM. 2024. Marine microbiology: How to evolve a nitrogen-fixing organelle.听Current Biology 34(17): R826-R829.听

Bach LT, Ferderer AJ, LaRoche J, Schulz KG. 2024. Technical note: Ocean Alkalinity Enhancement Pelagic Impact Intercomparison Project (OAEPIIP).听Biogeosciences 21(16): 3665-3676.

Rose SA, Robicheau BM, Tolman J, Fonseca-Batista D, Rowland E, Desai D, Ratten J-M, Kantor EJH, Comeau AM, Langille MGI, Jerlstr枚m-Hultqvist J, Devred E, Sarthou G, Bertrand EM, LaRoche J. 2024. Nitrogen fixation in the widely distributed marine 纬-proteobacterial diazotroph听Candidatus听Thalassolituus haligoni.听Science Advances 10(31): eadn1476.

MacNeil L, Costa M, LaRoche J. 2024. Glimpsing the 2020 spring bloom in the Strait of Georgia (Canada) with autonomous ferry-based sensors.听Marine Ecology Progress Series 736: 181-187.

Tolman J, Desai D, LaRoche J. 2024.听Rapid quantitative assessment of temporal and spatial variation in key functional genes of the microbial nitrogen cycle across multiple marine environments using the NanoString nCounter.听Limnology and Oceanography: Methods 22(2): 103-117.

Haider D, Hall MW, LaRoche J, Beiko RG. 2024. Mock microbial community meta-analysis using different trimming of amplicon read lengths. Environmental Microbiology 26(1): e16566

Robicheau BM, Tolman J, Rose S, Desai D, LaRoche J. 2023.听Marine nitrogen-fixers in the Canadian Arctic Gateway are dominated by biogeographically distinct non-cyanobacterial communities. FEMS Microbiology Ecology 99(12): fiad122.

Robicheau BM, Tolman J, Desai D, LaRoche J. 2023.听Microevolutionary patterns in ecotypes of the symbiotic cyanobacterium UCYN-A revealed from a Northwest Atlantic coastal time series. Science Advances 9(39): eadh9768.

Colombo M, LaRoche J, Desai D, Li J, Maldonado MT. 2023.听Control of particulate manganese (Mn) cycling in halocline Arctic Ocean waters by putative Mn鈥恛xidizing bacterial dynamics. Liminology and Oceanography 68(9):听2070-2087.

Hendricks A, Mackie CM, Luy E, Sonnichsen C, Smith J, Grundke I, Tavasoli M, Furlong A, Beiko RG, LaRoche J, Sieben V. 2023. Compact and automated eDNA sampler for in situ monitoring of marine environments. Scientific Reports 13: 1-13

Soto MA, Desai D, Bannon C, LaRoche J, Bertrand EM. 2023.听Cobalamin producers and prokaryotic consumers in the Northwest Atlantic. Environmental Microbiology 25(7): 1300-1313.听

Behnke J, Cai Y, Gu H, 尝补搁辞肠丑别听闯. 2023.听Short-term response to iron resupply in an iron-limited open ocean diatom reveals rapid decay of iron-responsive transcripts.听PLOS ONE 18(1):听e0280827.听

Landou E, Lazar B, LaRoche J, Fennel I, Berman鈥怓rank I. 2023.听Contribution of photic and aphotic N₂听fixation to production in an oligotrophic sea.听Liminology and Oceanography 68(3):听692-708.

Raes EJ, Tolman J, Desai D, Ratten J-M, Zorz J, Robicheau BM, Haider D, LaRoche J. 2022.听Seasonal bacterial niche structures and chemolithoautotrophic ecotypes in a North Atlantic fjord. Scientific Reports 12(15335): 1-13.

MacNeil L, Desai DK, Costa M, LaRoche J. 2022. Combining multi-marker metabarcoding and digital holography to describe eukaryotic plankton across the Newfoundland Shelf. Scientific Reports 12(13078): 1-11.

Robicheau BM, Tolman J, Bertrand EM, LaRoche J. 2022.听Highly-resolved interannual phytoplankton community dynamics of the coastal Northwest Atlantic. ISME Communications 2:1-12.听

Duerschlag J, Mohr W, Ferdelman TG, LaRoche J, Desai D, Croot PL, Vo脽 D, Zielinski O, Lavik G, Littmann S, Mart铆nez-P茅rez C, Tschitschko B, Bartlau N, Osterholz H, Dittmar T, Kuypers MMM. 2022.听Niche partitioning by photosynthetic plankton as a driver of CO2-fixation across the oligotrophic South Pacific Subtropical Ocean. ISME J 16(2):465-476.

LaRoche J and听Robicheau BM. 2022.听The Pelagic Light-Dependent Microbiome. In: Stal LJ, Cretoiu MS (eds)听The Marine Microbiome, 2nd Edition. Springer, Cham. pp. 395-423. 听

Smith P, Beaumont L, Bernacchi CJ, Byrne M, Cheung W, Conant RT, Cotrufo F, Feng X, Janssens I, Jones H, Kirschbaum MUF, Kobayashi K, 尝补搁辞肠丑别听闯, Luo Y, McKechnie A, Penuelas J, Piao S, Robinson S, Sage RF, Sugget DJ, Thackeray SJ, Way D, Long SP. 2022. Essential Outcomes for COP26. Global Change Biology 28(1):1-3.

Chen X, Wei W, Xiao X, Wallace D, Hu C, Zhang L, Batt J, Liu J, Gonsior M, Zhang Y, 尝补搁辞肠丑别听闯, Hill P, Xu D, Wang J, Jiao N, Zhang R. 2022.听Heterogeneous viral contribution to dissolved organic matter processing in a long-term macrocosm experiment.听Environment International 158:106950.

MacNeil L, Missan S, Luo J, Trappenberg T, LaRoche J. 2021.听Plankton classification with high-throughput submersible holographic microscopy and transfer learning.听BMC Ecology and Evolution 21(1):1-11.

Sebastian H, Robicheau BM, Rakshit S, Tolman J, Algar CK, LaRoche J, Wallace DWR. 2021.听Physical mixing in coastal waters controls and decouples nitrification via biomass dilution.听Proceedings of the National Academy of Sciences 118(18).

Jiao N, et al. 2021.听Correcting a major error in assessing organic carbon pollution in natural waters.听Science Advances 7(16): eabc7318

Behnke J, Cohen AM, LaRoche J. 2021.听N-linked glycosylation enzymes in the diatom Thalassiosira oceanica exhibit a diel cycle in transcript abundance and favor for NXT-type sites. Scientific reports 11(1):1-14

B么to ML, Magalh茫es C, Perdig茫o R, Alexandrino DAM, Fernandes JP, Bernabeu AM, Ramos S, Carvalho MF, Semedo M, LaRoche J, Almeida CMR, Mucha AP. 2021.听Harnessing the potential of native microbial communities for bioremediation of oil spills in the Iberian Peninsula NW coast.听Frontiers in Microbiology 12:879.

Roy AS, Woehle C, LaRoche J. 2020.听The Transfer of the Ferredoxin Gene From the Chloroplast to the Nuclear Genome Is Ancient Within the Paraphyletic Genus Thalassiosira.听Frontiers in Microbiology 11:2389.

Behnke J, LaRoche J. 2020.听Iron uptake proteins in algae and the role of Iron Starvation-Induced Proteins (ISIPs).听European Journal of Phycology 55(3):339-360.

Haas S, Desai DK, LaRoche J, Pawlowicz R, Wallace DWR. 2019. Geomicrobiology of the carbon, nitrogen adn sulphur cycles in Powell Lake: a permanently stratified water column containing ancient seawater. Enviromental Microbiology 21(10):3927-3952听

Willis C, Desai D, LaRoche J. 2019.听Influence of 16S rRNA variable region on perceived diversity of marine microbial communities of the Northern North Atlantic.听FEMS Microbiology Letters : fnz152

Fonseca-Batista D, Li X, Riou V, Michotey V, Deman F, Fripiat F, Guasco S, Brion N, Lemaitre N, Tonnard M, Gallinari M, Planquette H, Planchon F, Sarthou G, Elskens M, LaRoche J, Chou L, Dehairs F. 2019. Evidence of high N₂听fixation rates in the temperate northeast Atlantic. Biogeosciences. 16(5):999-1017

Zorz J, Willis C, Comeau A, Langille MGT, Johnson C, Li WKW, LaRoche J.2019.听Drivers of Regional Bacterial Community Structure and Diversity in the Northwest Atlantic Ocean. Fronteirs in Microbiology. 10. DOI:听10.3389/fmicb.2019.00281

Michl S, Beyer M, Ratten J, Hasler M, LaRoche J, Schulz C. 2019.听A diet-change modulates the previously established bacterial gut community in juvenile brown trout (Salmo trutta). Scientific Reports. 9(1). DOI: 10.1038/s41598-019-38800-7

Moore RM, Grefe I, Zorz J, Shan S, Thompson K, Ratten J, LaRoche J. 2018. On the Relationship Between Hydrogen Saturation in the Tropical Atlantic Ocean and Nitrogen Fixation by the Symbiotic Diazotroph UCYN鈥怉. Journal of Geophysical Research: Oceans 123(4):2353-2362

Michl SC, Ratten J, Beyer M, Hasler M,听LaRoche J, Schulz, C. 2017.听The malleable gut microbiome of juvenile rainbow trout (Oncorhynchus mykiss): Diet-dependent shifts of bacterial community structures.听PLoS ONE (12):e0177735

Jickells TD, Buitenhuis E, Altieri K, Baker AR, Capone D, Duce RA, Dentener F, Fennel K, Kanakidou M,听LaRoche J, Lee K, Liss P, Middelburg JJ, Moore JK, Okin G, Oschlies A, Sarin M, Seitzinger S, Sharples J, Singh A, Suntharalingam P, Uematsu M, Zamora LM. 2017.听A reevaluation of the magnitude and impacts of anthropogenic atmospheric nitrogen inputs on the ocean.听Global Biogeochemical Cycles (31):289-305

Sargent EC, Hitchcock A, Johansson SA, Langlois R, Moore CM,听LaRoche J, Poulton AJ, Bibby TS. 2016.听Evidence for polyploidy in the globally important diazotroph Trichodesmium.听FEMS Microbiology Letters (363):fnw244

Martinez-Perez C, Mohr W, L枚scher CR, Dekaezemacker J, Littmann S, Yilmaz P, Lehnen N, Fuchs BM, Lavik G, Schmitz RA,听LaRoche J, Kuypers MMM. 2016. The small unicellular diazotrophic symbiont, UCYN-A, is a key player in the marine nitrogen cycle.听Nature Microbiology (1):16163

L枚scher CR,听LaRoche J, Schmitz RA. 2015.听Underestimation of Marine Dinitrogen Fixation: A Novel Method and Novel Diazotrophic Habitats Biological Nitrogen Fixation.听891-896础

Kopf A, Bicak M, Kottmann R, Schnetzer J, Kostadinov I, Lehmann K, ...(157 authors)听2015.听The ocean sampling day consortium.听GigaScience 4(1):1-5

Langlois R, Gro脽kopf T,听Mills M, Takeda S,听LaRoche J.听2015.听Widespread Distribution and Expression of Gamma A (UMB), an Uncultured, Diazotrophic, 纬-Proteobacterial nifH Phylotype.听PLoS One听

Ratten JM,听LaRoche J, Desai DK, Shelley RU, Landing WM, Boyle E, Cutter GA, Langlois RJ. 2015.听Sources of iron and phosphate affect the distribution of diazotrophs in the North Atlantic.听Deep Sea Research Part II: Topical Studies in Oceanography 116:332-341.

Wallace DW, de Young B, Iverson S,听LaRoche J, Whoriskey F, Lewis M,...Rae A. 2014.听A Canadian contribution to an integrated Atlantic ocean observing system (IAOOS).听In Oceans-St. John's, (pp. 1-10). IEEE.

Krupke A, Mohr W,听LaRoche J, Fuchs BM, Amann RI, Kuypers MM. 2014.听The effect of nutrients on carbon and nitrogen fixation by the UCYN-A鈥揾aptophyte symbiosis. The ISME journal.

Perner M, Gonnella G, Kurtz S,听LaRoche J. 2014.听Handling temperature bursts reaching 464掳 C: different microbial strategies in the Sisters Peak hydrothermal chimney. Appl.Environ. Microbiol, AEM. 01460-141.

Loescher CR, Gro脽kopf T, Desai FD, Gill D, Schunck H, Croot PL, Schlosser C, Neulinger S, Pinnow N, Lavik G, Kuypers MMM,听LaRoche J听and Schmit RA. 2014.听Facets of diazotrophy in the oxygen minimum zone waters off Peru.听听

Krupke A,听Musat N,听Laroche J,听Mohr W,听Fuchs BM,听Amann RI,听Kuypers MM,听Foster RA. 2013.听In situ identification and N鈧� and C fixation rates of uncultivated cyanobacteria populations. Syst Appl Microbiol. 36(4):259-71.听

Moore CM, Mills MM, Arrigo KR, Berman-Frank I, Bopp L, Boyd PW, Galbraith ED, Geider RJ, Guieu C, Jaccard SL, Jickells TD,听LaRoche J, Lenton TM, Mahowald NM, Mara帽贸n E, Marinov I, Moore JK, Nakatsuka T, Oschlies A, Saito MA, Thingstad TF, Tsuda A, Ulloa O. 2013.听Processes and patterns of oceanic nutrient limitation. Nature Geoscience.

Mohr W, Vagner T, Kuypers MMM, Ackermann M,听LaRoche J. 2013.听Resolution of Conflicting Signals at the Single-Cell Level in the Regulation of Cyanobacterial Photosynthesis and Nitrogen Fixation.听Plos One 8(6).

Desai DK, Schunck H, Loeser JW,听LaRoche J. 2013.听Fragment recruitment on metabolic pathways: comparative metabolic profiling of metagenomes and metatranscriptomes. Bioinformatics 29(6): 790-791.

Roy A-S, Gibbons SM, Schunck H, Owens S, Caporaso JG, Sperling M, Nissimov JI, Romac S, Bittner L, Muehling M, Riebesell U,听LaRoche J, Gilbert JA. 2013.听Ocean acidification shows negligible impacts on high-latitude bacterial community structure in coastal pelagic mesocosms. Biogeosciences 10(1): 555-566.

Schunck H, Lavik G, Desai DK, GroSSkopf T, Kalvelage T, Loscher CR, Paulmier A, Contreras S, Siegel H, Holtappels M, Rosenstiel P, Schilhabel MB, Graco M, Schmitz RA, Kuypers MMM,听Laroche J. 2013.听Giant Hydrogen Sulfide Plume in the Oxygen Minimum Zone off Peru Supports Chemolithoautotrophy. PloS one 8(8):e68661.

Desai DK, Desai FD,听LaRoche J. 2012.听Factors influencing the diversity of iron uptake systems in aquatic microorganisms. Front. Microbio. 3:362.听

Gro脽kopf T, Mohr W, Baustian T, Schunck H, Gill1 D, Kuypers MMK, Lavik G, Schmitz RA, Wallace DWR,听LaRoche J.听2012.听Doubling of marine dinitrogen-fixation rates based on direct measurements. Nature 488, 361鈥�364.听

Gro脽kopf T,听LaRoche J.听2012.听Direct and indirect costs of dinitrogen fixation in Crocosphaera watsonii WH8501 and possible implications for the nitrogen cycle. Front. Microbio.听

Lommer M, Specht M, Roy A-S, Kraemer L, Andreson R, Gutowska MA, Wolf J, Bergner SV, Schilhabel MB, Klostermeier UC, Beiko RG, Rosenstiel P, Hippler M,听LaRoche J. 2012.听Genome and low-iron response of an oceanic diatom adapted to chronic iron limitation. Genome Biology 13:R66

Halm H, Lam P, Ferdelman TG, Lavik G, Dittmar T,听LaRoche J, D'Hondt S. 2012.听Heterotrophic organisms dominate nitrogen fixation in the South Pacific Gyre. ISME J 6(6):1238-1249听

Loescher CR, Kock A, Koenneke M,听LaRoche J,听Bange HW, Schmitz RA. 2011.听Production of oceanic nitrous oxide by ammonia-oxidizing archaea.听PLoS ONE Biogeosciences, 9, 2419鈥�2429, 2012听

Mohr W, Gro脽kopf T, Wallace DWR,听LaRoche J. 2010.听Methodological Underestimation of Oceanic Nitrogen Fixation Rates. PLoS ONE 5: e12583.听