Stephen Lanno
Assistant Professor of GeneticsAbout
Research
Publications
2024
cis- and trans-regulatory contributions to a hierarchy of factors influencing gene expression variation
Kalra S, Lanno S, Sanchez G, Coolon J. cis- and trans-regulatory contributions to a hierarchy of factors influencing gene expression variation. Communications Biology 2024, 7: 1563. PMID: 39587248, PMCID: PMC11589579, DOI: 10.1038/s42003-024-07255-6.Peer-Reviewed Original ResearchConceptsGene expression variationTrait variationExpression variationTrans-regulatory changesGene expression traitsSource of trait variationTrans-regulationExpression traitsDiverse organismsMolecular mechanismsDevelopmental stagesTransgenerational effectsGenesLife stagesTraitsDrosophilaGenomeEnvironmental responsibilityAssociated with changesMultiple different sourcesVariation
2022
Genomics analysis of Drosophila sechellia response to Morinda citrifolia fruit diet
Drum Z, Lanno S, Gregory S, Shimshak S, Barr W, Gatesman A, Schadt M, Sanford J, Arkin A, Assignon B, Colorado S, Dalgarno C, Devanny T, Ghandour T, Griffin R, Hogan M, Horowitz E, McGhie E, Multer J, O'Halloran H, Ofori-Darko K, Pokushalov D, Richards N, Sagarin K, Taylor N, Thielking A, Towle P, Coolon J. Genomics analysis of Drosophila sechellia response to Morinda citrifolia fruit diet. G3: Genes, Genomes, Genetics 2022, 12: jkac153. PMID: 35736356, PMCID: PMC9526069, DOI: 10.1093/g3journal/jkac153.Peer-Reviewed Original ResearchConceptsGene expression responsesD. sechelliaGenome-wide gene expression responsesExpression responsesTranscription factor prediction analysesNoni fruitDrosophila sechelliaGenomic analysisRegulatory networksIdentified genesHost specialistsToxic fruitsGenetic mechanismsRNA sequencingBiochemical pathwaysToxin resistanceFruit flyFruit dietGenesFruitMorinda citrifoliaAbundant compoundsGeneral responseNoniRegulation
2021
Genomics analysis of hexanoic acid exposure in Drosophila species
Drum Z, Lanno S, Gregory S, Shimshak S, Ahamed M, Barr W, Bekele B, Biester A, Castro C, Connolly L, DelGaudio N, Humphrey W, Karimi H, Karolczak S, Lawrence T, McCracken A, Miller-Medzon N, Murphy L, Park C, Park S, Qiu C, Serra K, Snyder G, Strauss A, Tang S, Vyzas C, Coolon J. Genomics analysis of hexanoic acid exposure in Drosophila species. G3: Genes, Genomes, Genetics 2021, 12: jkab354. PMID: 34718544, PMCID: PMC8727985, DOI: 10.1093/g3journal/jkab354.Peer-Reviewed Original ResearchConceptsD. sechelliaDrosophila sechelliaSets of differentially expressed genesSpecialist D. sechelliaFruit of Morinda citrifoliaDifferentially expressed genesAcid resistanceHexanoic acidM. citrifolia fruitDrosophila speciesD. melanogasterGeneralist speciesGenomic analysisFruit of M. citrifoliaCandidate genesDietary specialistsDietary specializationTranscriptional responseEcological communitiesTrophic interactionsHost plantsGenetic basisRNA sequencingDownregulated genesGene expression
2019
Genomics Analysis of L-DOPA Exposure in Drosophila sechellia
Lanno S, Lam I, Drum Z, Linde S, Gregory S, Shimshak S, Becker M, Brew K, Budhiraja A, Carter E, Chigweshe L, Collins K, Earley T, Einstein H, Fan A, Goss S, Hagen E, Hutcheon S, Kim T, Mitchell M, Neri N, Patterson S, Ransom G, Sanchez G, Wiener B, Zhao D, Coolon J. Genomics Analysis of L-DOPA Exposure in Drosophila sechellia. G3: Genes, Genomes, Genetics 2019, 9: 3973-3980. PMID: 31575638, PMCID: PMC6893205, DOI: 10.1534/g3.119.400552.Peer-Reviewed Original ResearchConceptsToxin-resistant phenotypeHost specializationResistance phenotypeGene expression responsesDrosophila sechelliaSpecies pairsGenomic analysisGenomic studiesFunctional geneticsReproductive successEcological adaptationGenomic techniquesToxic fruitsGenetic basisExpression responsesKnock-downHeterologous speciesToxin resistanceGenesFruit flyL-DOPA exposureGenomeSpeciesSupplementation of dietsPhenotypeOsiris Genes and Insect Adaptive Evolution
Coolon J, Drum Z, Lanno S, Smith C. Osiris Genes and Insect Adaptive Evolution. 2019, 1-14. DOI: 10.1002/9780470015902.a0028763.Peer-Reviewed Original ResearchOsiris genesInsect evolutionGene familyPhenotypic plasticityTargets of selectionInsect developmentInsect lineagesInsect genomesEndosomal traffickingSequence homologyMolecular functionsInsect population controlGene expressionGenesSyntenyInsectsExpressionGenomeHomologyLineagesTraffickingFamilySequencePopulation controlsSpeciationDerived esterase activity in Drosophila sechellia contributes to evolved octanoic acid resistance
Lanno S, Coolon J. Derived esterase activity in Drosophila sechellia contributes to evolved octanoic acid resistance. Insect Molecular Biology 2019, 28: 798-806. PMID: 30977928, DOI: 10.1111/imb.12587.Peer-Reviewed Original ResearchConceptsDetoxification gene familiesD. sechelliaGene familyOA resistanceGenomic regionsToxin resistanceMajor-effect lociMedium-chain fatty acids octanoic acidSynergists diethyl maleateDrosophila sechelliaChromosome 3RDefence compoundsEffect lociSechelliaOctanoic acidHost plantsGenetic basisCytochrome P450 enzymatic activityEnzymatic activityMorinda citrifoliaHexanoic acidAcid resistanceGlutathione-S-transferaseEsterase activityToxinInvestigating the role of Osiris genes in Drosophila sechellia larval resistance to a host plant toxin
Lanno S, Shimshak S, Peyser R, Linde S, Coolon J. Investigating the role of Osiris genes in Drosophila sechellia larval resistance to a host plant toxin. Ecology And Evolution 2019, 9: 1922-1933. PMID: 30847082, PMCID: PMC6392368, DOI: 10.1002/ece3.4885.Peer-Reviewed Original ResearchOA resistanceAdaptive phenotypic changesResistant to OAGenomic regionsGenetic basisGenome-wide differential gene expressionPhenotypic changesToxic host plantsFine-mapping QTLDifferential gene expressionHost plant toxinsMultiple life stagesOsiris genesLife stagesGenetic mapHost specializationFamily genesHost plantsResistance genesRNA sequencingRNA interferenceExposure to OAGene expressionGenesFruit fly
2017
Transcriptomic Analysis of Octanoic Acid Response in Drosophila sechellia Using RNA-Sequencing
Lanno S, Gregory S, Shimshak S, Alverson M, Chiu K, Feil A, Findley M, Forman T, Gordon J, Ho J, Krupp J, Lam I, Lane J, Linde S, Morse A, Rusk S, Ryan R, Saniee A, Sheth R, Siranosian J, Sirichantaropart L, Sternlieb S, Zaccardi C, Coolon J. Transcriptomic Analysis of Octanoic Acid Response in Drosophila sechellia Using RNA-Sequencing. G3: Genes, Genomes, Genetics 2017, 7: 3867-3873. PMID: 29021218, PMCID: PMC5714484, DOI: 10.1534/g3.117.300297.Peer-Reviewed Original ResearchConceptsQuantitative trait lociOA resistanceGene expression analysisGene OntologyResistance genesRNA sequencingRNA interferenceExpression analysisConsistent with previous functional studiesFunctional studiesGene family membersAnnotated orthologsDrosophila sechelliaEffect lociRNA-seqLevels of octanoic acidTrait lociCuticle developmentDefense responsesExpressed genesToxic fruitsTranscriptome analysisDownregulated genesUpregulated genesGenesAnalysis of cytochrome P450 contribution to evolved plant toxin resistance in Drosophila sechellia
Peyser R, Lanno S, Shimshak S, Coolon J. Analysis of cytochrome P450 contribution to evolved plant toxin resistance in Drosophila sechellia. Insect Molecular Biology 2017, 26: 715-720. PMID: 28703934, DOI: 10.1111/imb.12329.Peer-Reviewed Original ResearchConceptsD. sechelliaDrosophila sechelliaToxin resistanceCytochrome P450 enzymatic activityEnzymatic activityCytochrome P450 gene familyP450 gene familyM. citrifolia fruitDrosophila simulansGenetic mapDrosophila melanogasterDefence compoundsGene familyBasal resistanceHost plantsGenetic basisSpecies of fruit fliesFruit flyFunctional studiesSechelliaGenesLociCytochromePrimary toxinToxinGenetic basis of octanoic acid resistance in Drosophila sechellia: functional analysis of a fine‐mapped region
López J, Lanno S, Auerbach J, Moskowitz E, Sligar L, Wittkopp P, Coolon J. Genetic basis of octanoic acid resistance in Drosophila sechellia: functional analysis of a fine‐mapped region. Molecular Ecology 2017, 26: 1148-1160. PMID: 28035709, PMCID: PMC5330365, DOI: 10.1111/mec.14001.Peer-Reviewed Original ResearchConceptsD. sechelliaOA resistanceDrosophila sechelliaRNA interferenceGenetic basisEvolutionary changesTissue-specific RNA interferenceFine-mapped regionKnock down expressionGene expression analysisD. simulansSister speciesChromosome 3RGenomic regionsD. melanogasterDefence compoundsLevel of expressionToxic fruitsFat bodySpecies of fruit fliesEnvironmental plasticityGenesSeychelles IslandsFruit flyFunctional analysis