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Theses/Dissertations from 2014

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Real-time PCR analysis of maize seedlings for assessment of seed treatment efficacy and genetic resistance to infection by Sphacelotheca reiliana, Samuel James Anderson

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Deciphering the genetic architecture of native resistance and tolerance to western corn rootworm larval feeding, David Alan Hessel

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Phenology of infection on apple fruit by sooty blotch and flyspeck species in Iowa apple orchards and phylogenetic analysis to assess the evolutionary origins of sooty blotch and flyspeck on apple, Siti Izera Ismail

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Hydrating the Pseudomonas aeruginosa periplasm under desiccating conditions, Seth James Wenner

Theses/Dissertations from 2013

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Studies on extraction and control of plant-parasitic nematodes on corn, Mychele Batista da Silva

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Fumonisin content in conventional versus Bt maize and implications of fumonisin contamination on fuel ethanol yield and DDGS quality, Erin Louise Bowers

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The Turnip mosaic virus and its effects on Arabidopsis thaliana gene expression, Brian Anthony Campbell

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Computational and experimental analysis of TAL effector-DNA binding, Erin Lynn Doyle

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Natural and engineered resistance triggered by TAL effectors of Xanthomonas oryzae, Aaron Hummel

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Sooty blotch and flyspeck disease of apple: expansion of the fungal complex in Turkey and evaluation of a warning system for the Upper Midwest, Derrick Anthony Mayfield

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Determination and quantification of surface lipid metabolites in maize silks: A pathway model for surface lipid biosynthesis based on simultaneous profiling of polar and non-polar metabolites, Layton Andrew Peddicord

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Identification and characterization of effectors secreted from sedentary endoparasitic phytonematodes, William Brock Rutter

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Bacterial wilt of cucurbits: Ecology, genetics, and management, Erika Saalau Rojas

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Characterization of a cell death suppressing effector broadly conserved across the fungal kingdom, Ehren Lee Whigham

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Characterization of multiple regulatory networks and responses to environmental signals in Pseudomonas syringae during its association with plants, Xilan Yu

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Effect of infection site and glyphosate application on the foliar symptoms expression of soybean sudden death syndrome, Marcio Leizer Zaccaron

Theses/Dissertations from 2012

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Fusarium species infecting soybean roots: Frequency, aggressiveness, yield impact and interaction with the soybean cyst nematode, Maria Mercedes Diaz Arias

Theses/Dissertations from 2011

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The effect of fungicides on soybean in Iowa applied alone or in combination with insecticides at two application growth stages on disease severity and yield, Nathan Bestor

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An epidemiological comparison of the US and Canadian Plum pox virus eradication programs, Andrew Gougherty

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A look into the molecular mechanisms of parasitism including the functional characterization of Heterodera schachtii secreted effector proteins and the response of plant small RNA to nematode infection, Peter Jacob Howe

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Characterization and management of genetic diversity in Phytophthora sojae populations, Silvina Maria Stewart

Theses/Dissertations from 2010

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Interactions between lesion nematodes and corn pathogens, Marcos Paulo Da Silva

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Epidemiological studies on the infection process and symptom expression of soybean sudden death syndrome, Carlos Cecilio Gongora-canul

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Improved seed health tests for Xanthomonas axonopodis pv. phaseoli in common bean, Yiqing He

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Functional characterization of Arabidopsis genes changing expression during cyst nematode Heterodera schachtii infection, Jing Jin

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Ophiostomatales isolated from two European bark beetles, Hylurgus ligniperda and Orthotomicus erosus, in California, Sujin Kim

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Quantifying the aggressiveness, temporal and spatial spread of Pantoea stewartii in sweet corn, Lu Liu

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Genetic characterization of the partial restorer of fertility gene, Rf8, in T cytoplasm maize, Julie Marie Meyer

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The regulation of host translation initiation in plant-pathogen interactions, Jackson Russell Moeller

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Deciphering the transcriptional regulation and response of barley to obligate fungal biotroph invasion, Matthew James Moscou

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Novel components of Pseudomonas putida biofilm exopolymeric matrix and a transcriptome analysis of the effects of osmotic and matric stress, Lindsey Nielsen

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Interactions among viruses, insect vectors and the Phomopsis complex in soybean, and effects of integrated management strategies, Jose Pablo Soto-arias

Theses/Dissertations from 2009

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The role of water stress in plant disease resistance and the impact of water stress on the global transcriptome and survival mechanisms of the phytopathogen Pseudomonas syringae, Brian Carl Freeman

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Evaluation of the expression of water stress-responsive Pseudomonas syringae genes during plant infection and in the presence of low osmotic versus low matric potential in culture, Kelly Crowley Peterson

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Assessing new methods of integrated pest management for apple orchards in the Midwest and phenology of sooty blotch and flyspeck fungi on apples in Iowa, Adam Sisson

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Sooty blotch and flyspeck: Evaluation of remotely estimated weather inputs to disease-warning systems and delineation of fungal taxa closely grouping with Mycosphaerella madeirae, Nenad -. Tatalovic

Theses/Dissertations from 2008

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Bean pod mottle virus: Spatial and temporal dynamics at different spatial scales and the impact of time of infection on soybean yield and quality, Emmanuel Byamukama

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Epidemiological studies of shading effects on Asian soybean rust, Ana Paula da Silva Dias

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Soybean mosaic and stem canker in Iowa soybean fields, Xin Lu

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Biotic and abiotic factors associated with Fusarium ear rot of maize caused by Fusarium verticillioides, Michael Wayne Parsons

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Interaction of fungicide seed treatments and the Fusarium-maize (Zea mays L.) pathosystem, Carlos Rodriguez-Brljevich

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A negative regulator of ribosomal RNA processing specifies R-gene-independent cell death in barley - powdery mildew interactions, Liu Xi

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Overwinter survival of Sclerotium rolfsii and S. rolfsii var. delphinii, screening hosta for resistance to S. rolfsii var. delphinii, and phylogenetic relationships among Sclerotium species, Zhihan Xu

Theses/Dissertations from 2007

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Phytophthora root and stem rot of soybean in Iowa: minimizing losses through an improved understanding of population structure and implementation of novel management strategies, Sarah Marie Cerra

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Sooty blotch and flyspeck of apple: assessment of an RFLP-based identification technique and adaptation of a warning system for the Upper Midwest, Katrina Beth Duttweiler

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Soybean rust in the United States: assess its potential epidemic ranges and frequency based on disease limiting factors, disease attributes, and comparative epidemiology, Xun Li

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Alternative hosts of Phakopsora pachyrhizi in the Americas: an analysis of their role in the epidemiology of Asian soybean rust in the continental U.S., Oscar Pérez-Hernández

Theses/Dissertations from 2006

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Genomics and molecular biology approaches to plant-parasitic nematode biology and parasitism , Axel Armin Elling

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Identification of StBEL5 RNA as a long-distance mobile signal in short-day facilitated tuber formation , Yueyue Yu

Theses/Dissertations from 2005

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Sooty blotch and flyspeck on apple: expansion of the fungal complex, post-harvest removal and heterogeneity of apple canopy wetness and its impact on the outcome of a disease-warning system , Jean Carlson Batzer

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Epidemiology and disease management of Stewart's disease of corn in Iowa , Paul David Esker

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Translational control of gene expression mediated by the 3' untranslated region of Barley yellow dwarf virus , Elizabeth Lynn Pettit

Theses/Dissertations from 2004

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Use of remote sensing, geographic information systems, and spatial statistics to assess spatio-temporal population dynamics of Heterodera glycines and soybean yield quantity and quality , Antonio Jose de Araujo Moreira

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Host specialization, intersterility, and taxonomy of populations of Ceratocystis fimbriata from sweet potato, sycamore, and cacao , Christine Jeanette Baker Engelbrecht

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Gene regulation of RNA viruses with uncapped and non-polyadenylated genomic RNA , Ruizhong Shen

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Identification, characterization, and cloning of Arabidopsis rhd1-4: a UDP-glucose-4-epimerase mutant that exhibits hypersusceptibility to the sugar beet cyst nematode and altered root ethylene responses , Martin John Evers Wubben II

Theses/Dissertations from 2003

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Epidemiology and predictive management of gray leaf spot of maize , Pierce Anderson Paul

Theses/Dissertations from 2002

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Ecology and epidemiology of Colletotrichum acutatum on symptomless strawberry leaves , Leonor Frazão da Silva Leandro

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Ecological and quantitative studies of occurrence of soybean Sclerotinia stem rot, caused by Sclerotinia sclerotiorum, in the North-Central Region of the United States , Asimina Leonidas Mila

Theses/Dissertations from 2001

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Molecular mechanisms of cap and poly(A) independent translation of barley yellow dwarf virus RNA , Edwards M. Allen

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Effects of herbicides on growth and survival, and influence of latitude on anastomosis group diversity in Rhizoctonia solani , Harikrishnan Ramasubramaniam

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Insertional mutagenesis of the signal transduction pathway for low CO2 acclimation in Chlamydomonas reinhardtii , Kyujung Van

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Structural genomics of the barley Mla powdery mildew resistance complex , Fusheng Wei

Theses/Dissertations from 2000

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Assessing disease stress and modeling yield losses in alfalfa , Jie Guan

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Effects of liquid swine manure and its components on Heterodera glycines population densities and soybean growth and yield , Dean Alan Reynolds

Theses/Dissertations from 1999

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Biological control of Sclerotinia stem rot of soybean with Sporidesmium sclerotivorum , Luis Enrique del Rió Mendoza

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Relationships among tillage, spatial patterns of Heterodera glycines, and soybean yield , Walber Luiz Gavassoni

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Replication of barley yellow dwarf virus RNA and transcriptional control of gene expression , Guennadi Koev

Theses/Dissertations from 1997

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Soybean tolerance to soybean cyst nematode (Heterodera glycines Ichinohe), and interactions between H glycines and Phialophora gregata, the causal agent of brown stem rot of soybean , James Edward Behm

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Investigating components of the host-pathogen interaction of Septoria musiva and Populus , Scott Albert Heuchelin

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Soybean cultivar responses to and epidemiological studies of Sclerotinia sclerotiorum , Stephen Ngakhala Wegulo

Theses/Dissertations from 1996

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Molecular variation in strains of Fusarium spp affecting corn seed quality , Elizabeth Alvarez

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Biology of seed transmission of Erwinia stewartii in maize , Charles Clemens Block

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The taxonomy and phylogeny of the mycangial fungi from Dendroctonus brevicomis and D frontalis (Coleoptera: Scolytidae) , Portia Tang-Wung Hsiau

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Biology of RPV barley yellow dwarf virus satellite RNA , Lada Rasochova

Theses/Dissertations from 1995

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Molecular basis of resistance to soybean mosaic virus: reverse transcription (RT)-PCR and strain complementation analysis in soybeans , Michael E. Omunyin

Theses/Dissertations from 1994

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Evaluation of seed coating treatment on maize (Zea mays L.) stand establishment and seed rot caused by Pythium species at early planting season , Berto Arias-Rivas

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Genes in Cochliobolus heterostrophus affecting conidiation and lesion development , Peggy Rae Thorson

Theses/Dissertations from 1993

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Yield losses, chemical control, and epidemiology of fungal leaf blights on seed corn in Iowa , Jose Mauricio Rivera Canales

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In vitro analysis of the self-cleaving satellite RNA of barley yellow dwarf virus , Stanley Livingstone Silver

Theses/Dissertations from 1992

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Translational frameshifting by barley yellow dwarf virus RNA , Rong Di

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Epidemiological study of foliar diseases with strip intercropping rotation in Iowa , Kayimbi Mendha Tubajika

Theses/Dissertations from 1990

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Epidemiology and seed transmission of Goss's bacterial wilt and blight in corn , Julie Anne Biddle

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Interactions of Rhizoctonia solani Kühn and Trichoderma spp populations in soil , Maria Esther de la Fuente Prieto

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Development of an immunosorbent assay for seed-borne Erwinia stewartii in corn seed , Gregory Lee Lamka

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A restriction fragment length polymorphism map of Cochliobolus heterostrophus , Tzy-Hwa Tzeng

Theses/Dissertations from 1989

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A quantitative model for prediction of Phomopsis seed decay of soybeans , Carmen Martorell Milla

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Development of suppressiveness to Rhizoctonia solani Kühn in soils amended with fresh and composted manure , Rickie Paul Voland

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Studies on barley yellow dwarf virus in west-central Morocco , Mohamed El Yamani

Theses/Dissertations from 1988

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Growth and yield parameters, water relations, and photosynthesis of soybean plants infected with Phialophora gregata , Phyllis Maraulja Higley

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Wheat root rot in West Central Morocco and effects of Fusarium culmorum and Helminthosporium sativum seed and soil-borne inoculum on root rot development, plant emergence and crop yield , Abderrahmane Lyamani

Theses/Dissertations from 1986

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Development, comparison and utilization of enhanced immunoassays for the detection of lettuce mosaic virus , Angelita C. Dolores-Talens

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Epidemiology of Mycosphaerella populorum Thompson on the foliage and stems of Populus species , Christopher John Luley

Theses/Dissertations from 1985

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Pathogen survival and host resistance in the eyespot disease of maize caused by Kabatiella zeae Narita and Hiratsuka , Carlos M. Chinchilla-Lopez

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Differences in fitness of strains of Cochliobolus heterostrophus near-isogenic for toxin production , Carla Jean Rasmussen Klittich

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Developmental aspects of Gigaspora rosea and Glomus etunicatum, alone or in association with Alnus glutinosa , Ned B. Klopfenstein

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Effect of fungal contaminants on laboratory germination tests , Sarah A. H. Olembo

Theses/Dissertations from 1984

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Pathogenic effects of Pratylenchus scribneri in maize root systems , Stanley Wamukava Waudo

Theses/Dissertations from 1983

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Bacterial pustule of soybeans: Pathogen growth kinetics and epidemiology , Donald Ernest Groth

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Comparisons of traits of aggressiveness in sexual and asexual populations of Puccinia coronata, James Harold Oard