Index Catalog // ScholarsArchive@OSU

Infection of Brachypodium distachyon by Formae Speciales of Puccinia graminis: Early Infection Events and Host-Pathogen Incompatibility

Creator:: Figueroa, Melania, Alderman, Stephen, Garvin, David F., and Pfender, William F.
Abstract:: Puccinia graminis causes stem rust, a serious disease of cereals and forage grasses. Important formae speciales of P. graminis and their typical hosts are P. graminis f. sp. tritici (Pg-tr) in wheat and barley, P. graminis f. sp. lolii (Pg-lo) in perennial ryegrass and tall fescue, and P. graminis f....
Resource Type:: Article
Full Text:: , Stephen Alderman1, David F. Garvin2, William F. Pfender1,3* 1 Forage Seed and Cereal Research Unit

The Use and Role of Predictive Systems in Disease Management

Creator:: Gent, David H., Mahaffee, Walter F., McRoberts, Neil, and Pfender, William F.
Abstract:: Disease predictive systems are intended to be management aids. With a few exceptions, these systems typically do not have direct sustained use by growers. Rather, their impact is mostly pedagogic and indirect, improving recommendations from farm advisers and shaping management concepts. The degree to which a system is consulted depends...
Resource Type:: Article
Full Text:: . Gent,1,3,∗ Walter F. Mahaffee,2,3 Neil McRoberts,4 and William F. Pfender1,3 1U.S. Department of

Association of Spring Pruning Practices with Severity of Powdery Mildew and Downy Mildew on Hop

Creator:: Gent, David H., Nelson, Mark E., Grove, Gary G., Mahaffee, Walter F., Turechek, William W., and Woods, Joanna L.
Abstract:: Downy mildew (caused by Pseudoperonospora humuli) and powdery mildew (caused by Podosphaera macularis) are important diseases of hop in the Pacific Northwest United States, and cultural practices may affect the severity of both diseases. The association of spring pruning quality and timing with severity of downy mildew and powdery mildew...
Resource Type:: Article
Full Text:: Research and Extension Center, Prosser 99350; Walter F. Mahaffee, USDA-ARS, Horticultural Crops Research

Comparative genetic structure of two mangrove species in Caribbean and Pacific estuaries of Panama

Creator:: Ceron-Souza, Ivania, Bermingham, Eldredge, McMillan, William Owen, and Jones, Frank Andrew
Abstract:: Background: Mangroves are ecologically important and highly threatened forest communities. Observational and genetic evidence has confirmed the long distance dispersal capacity of water-dispersed mangrove seeds, but less is known about the relative importance of pollen vs. seed gene flow in connecting populations. We analyzed 980 Avicennia germinans for 11 microsatellite...
Resource Type:: Article
Full Text:: species in Caribbean and Pacific estuaries of Panama Ivania Cerón-Souza1,2*, Eldredge Bermingham1, William

Global net community production and the putative net heterotrophy of the oligotrophic oceans

Creator:: Westberry, Toby K., Williams, Peter J. le B., and Behrenfeld, Michael J.
Abstract:: Reconciling rates of organic carbon export from the euphotic zone with the consumption of organic material in the dark ocean remains one of the major quantitative uncertainties of the ocean carbon cycle. Euphotic zone net community production (NCP) provides one broad constraint on export flux and potential carbon drawdown. However,...
Resource Type:: Article
Full Text:: and respiration rates (mmol O2 m �3 d�1) for (a) the whole data set and (b–f) various subsets. In

An Ephemeral Sexual Population of Phytophthora infestans in the Northeastern United States and Canada

Creator:: Danies, Giovanna, Myers, Kevin, Mideros, María F., Restrepo, Silvia, Martin, Frank N., Cooke, David E. L., Smart, Christine D., Ristaino, Jean B., Seaman, Abby J., Gugino, Beth K., Grünwald, Niklaus J., and Fry, William E.
Abstract:: Phytophthora infestans, the causal agent of late blight disease, has been reported in North America since the mid-nineteenth century. In the United States the lack of or very limited sexual reproduction has resulted in largely clonal populations of P. infestans. In 2010 and 2011, but not in 2012 or 2013,...
Resource Type:: Article

SNP-Based Differentiation of Phytophthora infestans Clonal Lineages Using Locked Nucleic Acid Probes and High-Resolution Melt Analysis

Creator:: Hansen, Zachariah R., Knaus, Brian J., Tabima, Javier F., Press, Caroline M., Judelson, Howard S., Grünwald, Niklaus J., and Smart, Christine D.
Abstract:: Phytophthora infestans, the cause of the devastating late blight disease of potato and tomato, exhibits a clonal reproductive lifestyle in North America. Phenotypes such as fungicide sensitivity and host preference are conserved among individuals within clonal lineages, while substantial phenotypic differences can exist between lineages. Whole P. infestans genomes were...
Resource Type:: Article
Full Text:: ; Javier F. Tabima, Botany and Plant Pathology, Oregon State University, Corvallis, 97331; Caroline M

Mutualistic Co-evolution of Type III Effector Genes in Sinorhizobium fredii and Bradyrhizobium japonicum

Creator:: Kimbrel, Jeffrey A., Thomas, William J., Jiang, Yuan, Creason, Allison L., Thireault, Caitlin A., Sachs, Joel L., and Chang, Jeff H.
Abstract:: Two diametric paradigms have been proposed to model the molecular co-evolution of microbial mutualists and their eukaryotic hosts. In one, mutualist and host exhibit an antagonistic arms race and each partner evolves rapidly to maximize their own fitness from the interaction at potential expense of the other. In the opposing...
Resource Type:: Article
Full Text:: Genes in Sinorhizobium fredii and Bradyrhizobium japonicum Jeffrey A. Kimbrel1,2.¤, William J. Thomas1,2

Gramene: a bird's eye view of cereal genomes

Creator:: Jaiswal, Pankaj, Ni, Junjian, Yap, Immanuel, Ware, Doreen, Spooner, William, Youens-Clark, Ken, Canaran, Payan, Fogleman, Molly, Hebbard, Claire, Ren, Liya, Liang, Chengzhi, Zhao, Wei, Ratnapu, Kiran, Faga, Benjamin, Avraham, Shuly, Schmidt, Steven, Casstevens, Terry M., Buckler, Edward S., Stein, Lincoln, and McCouch, Susan
Abstract:: Rice, maize, sorghum, wheat, barley and the other major crop grasses from the family Poaceae (Gramineae) are mankind’s most important source of calories and contribute tens of billions of dollars annually to the world economy (FAO 1999, http://www.fao.org; USDA 1997, http://www.usda.gov). Continued improvement of Poaceae crops is necessary in order...
Resource Type:: Article
Full Text:: , Immanuel Yap, Doreen Ware1,3, William Spooner1, Ken Youens-Clark1, Liya Ren1, Chengzhi Liang1, Wei Zhao1

Gramene database in 2010: updates and extensions

Creator:: Youens-Clark, Ken, Buckler, Ed, Casstevens, Terry, Chen, Charles, DeClerck, Genevieve, Derwent, Paul, Dharmawardhana, Palitha, Jaiswal, Pankaj, Kersey, Paul, Karthikeyan, A. S., Lu, Jerry, McCouch, Susan R., Ren, Liya, Spooner, William, Stein, Joshua C., Thomason, Jim, Wei, Sharon, and Ware, Doreen
Abstract:: Now in its 10th year, the Gramene database (http://www.gramene.org) has grown from its primary focus on rice, the first fully-sequenced grass genome, to become a resource for major model and crop plants including Arabidopsis, Brachypodium, maize, sorghum, poplar and grape in addition to several species of rice. Gramene began with...
Resource Type:: Article
Full Text:: Lu1, Susan R. McCouch4, Liya Ren1, William Spooner1, Joshua C. Stein1, Jim Thomason1, Sharon Wei1 and

ScholarsArchive@OSU

Infection of Brachypodium distachyon by Formae Speciales of Puccinia graminis: Early Infection Events and Host-Pathogen Incompatibility

The Use and Role of Predictive Systems in Disease Management

Association of Spring Pruning Practices with Severity of Powdery Mildew and Downy Mildew on Hop

Comparative genetic structure of two mangrove species in Caribbean and Pacific estuaries of Panama

Global net community production and the putative net heterotrophy of the oligotrophic oceans

An Ephemeral Sexual Population of Phytophthora infestans in the Northeastern United States and Canada

SNP-Based Differentiation of Phytophthora infestans Clonal Lineages Using Locked Nucleic Acid Probes and High-Resolution Melt Analysis

Mutualistic Co-evolution of Type III Effector Genes in Sinorhizobium fredii and Bradyrhizobium japonicum

Gramene: a bird's eye view of cereal genomes

Gramene database in 2010: updates and extensions

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