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Cover Crop Effect On Subsequent Wheat Yield In The Central Great Plains, David Nielsen, Drew Lyon, Robert Higgins, Gary Hergert, Johnathon Holman, Merle Vigil 2016 Washington State University

Cover Crop Effect On Subsequent Wheat Yield In The Central Great Plains, David Nielsen, Drew Lyon, Robert Higgins, Gary Hergert, Johnathon Holman, Merle Vigil

David C. Nielsen

Crop production systems in the water-limited environment of the semiarid central Great Plains may not have potential to profitably use cover crops because of lowered subsequent wheat (Triticum asestivum L.) yields following the cover crop. Mixtures have reportedly shown less yield-reducing effects on subsequent crops than single-species plantings. This study was conducted to determine winter wheat yields following both mixtures and single-species plantings of spring-planted cover crops. The study was conducted at Akron, CO, and Sidney, NE, during the 2012–2013 and 2013–2014 wheat growing seasons under both rainfed and irrigated conditions. Precipitation storage efficiency before wheat planting, wheat ...


Plant Growth Promotion By Bradyrhizobium Japonicum Under Heavy Metal Stress, M. Seneviratne, S. Gunaratne, T. Bandara, L. Weerasundara, Nishanta Rajakaruna, G. Seneviratne, M. Vithanage 2016 National Institute of Fundamental Studies

Plant Growth Promotion By Bradyrhizobium Japonicum Under Heavy Metal Stress, M. Seneviratne, S. Gunaratne, T. Bandara, L. Weerasundara, Nishanta Rajakaruna, G. Seneviratne, M. Vithanage

Nishanta Rajakaruna

The increase in usage of heavy metals in different industrial activities causes their existence in effluents. Excessive concentrations of these heavy metals pollute soil and water. Heavy metals cause toxicities and other harmful effects not only in humans and animals but also in plants and soil microorganisms. Heavy metals disrupt many biochemical and physiological activities in bacteria, including growth, development, enzyme and hormone production. Indole acetic acid (IAA) is one of the most important hormones in plants, which is secreted by both bacteria and plants. The present study assessed the effects of Ni, Pb and Cu on the growth of ...


Leveraging The Plant Biotechnology Toolbox For Aquaculture: Production Of Protein Therapeutants For Promoting Fish Immune Health, Lana L. Elkins 2016 Arkansas State University - Main Campus

Leveraging The Plant Biotechnology Toolbox For Aquaculture: Production Of Protein Therapeutants For Promoting Fish Immune Health, Lana L. Elkins

2nd International Conference of Fish & Shellfish Immunology

No abstract provided.


Ascomycota: Introduction To Biodiversity, Evolutionary Genomics And Systematics, Wolfgang Schweigkofler 2016 Research Center for Agriculture and Forestry Laimburg, Italy

Ascomycota: Introduction To Biodiversity, Evolutionary Genomics And Systematics, Wolfgang Schweigkofler

Wolfgang Schweigkofler

The term genome, the basic gene complement of an individual, is almost synonymous with the chromosome complement of both nucleus and organelles. Refinements in cellular, genetic and molecular methods in recent years have opened up unexplored avenues in genome research. The modern tools of gene and genome analyses, coupled with analysis of finer segments of gene sequences in chromosomes utilizing molecular hybridization, are now applied on a wider scale in different groups of plants, ranging from algae to angiosperms. The present series on Plant Genomics: Biodiversity and Evolution aims to cover, in successive volumes, comprehensive reviews, concepts and discussions on ...


Biodiversity Of Planthoppers (Auchennorrhyncha) In Vineyards Infected With The Bois Noir Phytoplasma, Gernot Kunz, Christian Roschatt, Wolfgang Schweigkofler 2016 Department of Zoology, Universitatsplatz 2 A-8010 Graz, Austria

Biodiversity Of Planthoppers (Auchennorrhyncha) In Vineyards Infected With The Bois Noir Phytoplasma, Gernot Kunz, Christian Roschatt, Wolfgang Schweigkofler

Wolfgang Schweigkofler

The presence and density of plant- and leafhoppers was investigated in eleven vineyards infected with Ca. Phytoplasma solani, causal agent of Bois noir (BN), in South Tyrol (Northern Italy) using insect nets fro sampling the understory vegetation. The confirmed vector Hyalesthes obsoletus (Signoret) was sampled from early June to mid August of 2006; its abundance was positively correlated to the presence of BN symptoms on grapevines. An additional 56 Auchenorrhyncha species were sampled; the most numerous being Psammotettix confinis (Dahlbom), Laodelphax striatella (Fallen), Dicranotropis hamata (Boheman), Psammotettix alienus (Dahlbom), Falcotoya minuscula (Horvath), Macrosteles cristatus (Ribaut), Dictyophara europaea (L.), Philaenus spumarius ...


Microbial Biodiversity Associated With The Walnut Juglans Regia L. In South Tyrol (Italy), Ruth Pardatscher, Wolfgang Schweigkofler 2016 Research Centre for Agriculture and Forestry, Laimburg

Microbial Biodiversity Associated With The Walnut Juglans Regia L. In South Tyrol (Italy), Ruth Pardatscher, Wolfgang Schweigkofler

Wolfgang Schweigkofler

The endophytic and epiphytic microflora from walnut trees in South Tyrol (Northern Italy) was analyzed. A total of 16 trees from 8 sites were sampled at three dates during the warm season (May, July and September) in 2005, using plant material from three different tissue types (leaves, fruit and lignified twigs). Samples were either transferred directly onto nutrient medium or surface sterilized prior to plating to distinguish between epiphytic and endophytic growth. A total of 3,880 culturable isolates were obtained, the vast majority of the isolates (3,742) belonging to fungi (96.4%); only 138 (3.6%) were bacteria ...


Steaming Inactivates Phytophthora Ramorum, Causal Agent Of Sudden Oak Death And Ramorum Blight, From Infested Nursery Soils In California, Wolfgang Schweigkofler, Kathleen Kosta, Vernon Huffman, Supriya Sharma, Karen Suslow, Sibdas Ghosh 2016 Department of Natural Sciences and Mathematics, Dominican University of California

Steaming Inactivates Phytophthora Ramorum, Causal Agent Of Sudden Oak Death And Ramorum Blight, From Infested Nursery Soils In California, Wolfgang Schweigkofler, Kathleen Kosta, Vernon Huffman, Supriya Sharma, Karen Suslow, Sibdas Ghosh

Wolfgang Schweigkofler

Nursery trade plays a major role in the long-distance spread of Phytophthora ramorum, the causal agent of Sudden Oak Death (SOD) and ramorum blight of ornamental plants. Under federal regulations, nurseries found positive for P. ramorum must destroy infected plants and treat infested soils. The use of steam is an effective method to thermally inactivate P. ramorum from nursery soils as demonstrated at the National Ornamental Research Site at Dominican University (NORS-DUC) and one commercial nursery in the Central Valley of California. Heating up the top soil layer (0-30 cm) to 50°C for 120 minutes resulted in complete thermal ...


Reduced Levels Of Calcium And Other Mineral Elements In Grapevine Leaves Affected By Bois Noir (Bn), Wolfgang Schweigkofler, Anna Cassar, Elmar Stimpfl 2016 Research Centre for Agriculture and Forestry Laimburg

Reduced Levels Of Calcium And Other Mineral Elements In Grapevine Leaves Affected By Bois Noir (Bn), Wolfgang Schweigkofler, Anna Cassar, Elmar Stimpfl

Wolfgang Schweigkofler

The concentrations of seven mineral elements (Ca, K, N, Mg, Mn, Fe and P) were analyzed in leaves of healthy gra- pevines and of grapevines infected with Bois noir (BN). The levels of calcium of all five varieties used in the study('Chardonnay', 'MuÈller Thurgau', 'Pinot Noir', 'Lagrein' and 'Zweigelt') were significantly lower in leaves infected with BN. The other six elements also showed a tendency towards decreased contents, but the effects were less consi-stent. A distinctive varietal influence on both visual symptoms of BN and mineral contents was observed, 'Chardon-nay' and 'Zweigelt' being the most susceptible cultivars.


Detection And Quantification Of Airborne Conidia Of Fusarium Circinatum, The Causal Agent Of Pine Pitch Canker, From Two California Sites Using A Real Time-Pcr Approach Combined With A Simple Spore Trapping Method, Wolfgang Schweigkofler, Kerry O'Donnell, Matteo Garbelotto 2016 Department of Environmental Science, Policy, and Management, University of California, Berkeley

Detection And Quantification Of Airborne Conidia Of Fusarium Circinatum, The Causal Agent Of Pine Pitch Canker, From Two California Sites Using A Real Time-Pcr Approach Combined With A Simple Spore Trapping Method, Wolfgang Schweigkofler, Kerry O'Donnell, Matteo Garbelotto

Wolfgang Schweigkofler

Pinus radiata (Monterey pine), a tree native to coastal California and Mexico, is widely planted worldwide for timber production. A major threat to Monterey pine plantations is the fungal disease pine pitch canker, caused by Fusarium circinatum (Hypocreales). We present a novel trapping approach using filter paper in combination with a rapid molecular method to detect the presence of inoculum in the air. The assay is also useful for diagnosing the presence of the pathogen on plants. The test is based on the F. circinatum specific primer pair CIRC1A-CIRC4A, which amplifies a 360-bp DNA fragment in the intergenic spacer region ...


Detection And Quantification Of Leptographium Wageneri, The Cause Of Black-Stain Root Disease, From Bark Beetles (Coleoptera: Scolytidae) In Northern California Using Regular And Real-Time Pcr, Wolfgang Schweigkofler, William J. Otrosina, Sheri L. Smisth, Daniel R. Cluck, Kevin Maeda, Kabir G. Peay, Matteo Garbelotto 2016 Department of Environmental Science, Policy and Management, University of California, Berkeley

Detection And Quantification Of Leptographium Wageneri, The Cause Of Black-Stain Root Disease, From Bark Beetles (Coleoptera: Scolytidae) In Northern California Using Regular And Real-Time Pcr, Wolfgang Schweigkofler, William J. Otrosina, Sheri L. Smisth, Daniel R. Cluck, Kevin Maeda, Kabir G. Peay, Matteo Garbelotto

Wolfgang Schweigkofler

Black-stain root disease is a threat to conifer forests in western North America. The disease is caused by the ophiostomatoid fungus Leptographium wageneri (W.B. Kendr.) M.J. Wingf., which is associated with a number of bark beetle (Coleoptera: Scolytidae) and weevil species (Coleoptera: Curculionidae). We developed a polymerase chain reaction test to identify and quantify fungal DNA directly from insects. Leptographium wageneri DNA was detected on 142 of 384 bark beetle samples (37%) collected in Lassen National Forest, in northeastern California, during the years 2001 and 2002. Hylastes macer (LeConte) was the bark beetle species from which Leptographium DNA ...


First Report Of Fusarium Circinatum, Causal Agent Of Pitch Canker Disease, From The Roots Of Mature Aleppo Pines In California, M. Garbelotto, W. Schweigkofler 2016 Department of ESPM-ES, University of California, Berkeley

First Report Of Fusarium Circinatum, Causal Agent Of Pitch Canker Disease, From The Roots Of Mature Aleppo Pines In California, M. Garbelotto, W. Schweigkofler

Wolfgang Schweigkofler

A rapid decline of Aleppo pines was observed in the parking lot of the Legoland amusement park in San Diego Co., CA. Although Aleppo pine is a known host for Fusarium circinatum, this is the first report describing resin-soaked sapwood lesions in the roots of mature trees. Previous reports on root infections regarded seedlings. The infestation in this location may have begun with infected roots in planted saplings. The persistent infestation at Legoland represents a significant source of inoculum for this pathogen exotic to California.


Exploration Of Chemical And Biological Management Strategies For Diaphorina Citri The Primary Vector Of Candidatus Liberibacter Asiaticus, Gretta Marie Sharp 2016 University of Texas at Tyler

Exploration Of Chemical And Biological Management Strategies For Diaphorina Citri The Primary Vector Of Candidatus Liberibacter Asiaticus, Gretta Marie Sharp

Biology Theses

Diaphorina citri (Hemipteran: Psyllidae), the Asian citrus psyllid, is a phloem-feeding, invasive species endemic to southern Asia that was first identified in the United States in Florida in 1998. Since introduction, D. citri has spread across the major citrus growing regions of the United States. This is of great concern to the citrus industry because D. citri is the primary vector of Candidatus Liberibacter asiaticus the causal agent of Haunglongbing (HLB). Haunglongbing is the most economically devastating disease of citrus causing an estimated 8.92 billion dollars lost in revenue and 4.62 billion dollars lost in gross domestic product ...


Per Axel Rydberg’S Botanical Collecting Trips To Western Nebraska In 1890 And 1891, Robert B. Kaul, David M. Sutherland 2016 University of Nebraska-Lincoln

Per Axel Rydberg’S Botanical Collecting Trips To Western Nebraska In 1890 And 1891, Robert B. Kaul, David M. Sutherland

Zea E-Books

In the summer of 1891, Per Axel Rydberg and his assistant, Julius Hjalmar Flodman, collected plants in western Nebraska for the United States Department of Agriculture. They collected many first-records for Nebraska as well as some that became type specimens of Rydberg’s and other botanists’ names. In the following autumn and winter, Rydberg made a detailed, typewritten, carbon copied 35-page Report and 37-page List of specimens from that trip; one carbon copy is in the Bessey Herbarium (NEB) at the University of Nebraska–Lincoln. It is these documents that we present here, extensively annotated with our geographic clarifications, original ...


Oxalate And Phytate Of Soy Foods, Ismail A. Al-Wahsh, Harry T. Horner, Reid G. Palmer, Manju B. Reddy, Linda K. Massey 2016 Washington State University

Oxalate And Phytate Of Soy Foods, Ismail A. Al-Wahsh, Harry T. Horner, Reid G. Palmer, Manju B. Reddy, Linda K. Massey

Harry Horner

The consumption of foods made from soybeans is increasing because of their desirable nutritional value. However, some soy foods contain high concentrations of oxalate and/or phytate. Oxalate is a component of calcium oxalate kidney stones, whereas phytate is an inhibitor of calcium kidney stone formation. Thirty tested commercial soy foods exhibited ranges of 0.02−2.06 mg oxalate/g and 0.80−18.79 mg phytate/g. Commercial soy foods contained 2−58 mg of total oxalate per serving and 76−528 mg phytate per serving. Eighteen of 19 tofu brands and two soymilk brands contained less than ...


Oxalate And Phytate Of Soy Foods, Ismail A. Al-Wahsh, Harry T. Horner, Reid G. Palmer, Manju B. Reddy, Linda K. Massey 2016 Washington State University

Oxalate And Phytate Of Soy Foods, Ismail A. Al-Wahsh, Harry T. Horner, Reid G. Palmer, Manju B. Reddy, Linda K. Massey

Harry Horner

The consumption of foods made from soybeans is increasing because of their desirable nutritional value. However, some soy foods contain high concentrations of oxalate and/or phytate. Oxalate is a component of calcium oxalate kidney stones, whereas phytate is an inhibitor of calcium kidney stone formation. Thirty tested commercial soy foods exhibited ranges of 0.02−2.06 mg oxalate/g and 0.80−18.79 mg phytate/g. Commercial soy foods contained 2−58 mg of total oxalate per serving and 76−528 mg phytate per serving. Eighteen of 19 tofu brands and two soymilk brands contained less than ...


Oxalate And Phytate Concentrations In Seeds Of Soybean Cultivars, Harry T. Horner, Teresa Cervantes-Martinez, Rosanne Healy, Manju B. Reddy, Betsy L. Deardorff, Theodore B. Bailey, Ismail Al-Wahsh, Linda K. Massey, Reid G. Palmer 2016 Iowa State University

Oxalate And Phytate Concentrations In Seeds Of Soybean Cultivars, Harry T. Horner, Teresa Cervantes-Martinez, Rosanne Healy, Manju B. Reddy, Betsy L. Deardorff, Theodore B. Bailey, Ismail Al-Wahsh, Linda K. Massey, Reid G. Palmer

Harry Horner

This study analyzed soybean seeds from 116 cultivars for total, insoluble, and soluble oxalate (Ox), phytate (InsP6), calcium (Ca), and magnesium (Mg) because of their potential beneficial or harmful effects on human nutrition. These cultivars were divided into four groups (A-D) on the basis of the year and geographic location where they were grown. Oxalate concentration ranged from about 82 to 285 mg/100 g of dry seed. The InsP6 concentration ranged from 0.22 to 2.22 g/100 g of dry seed. There was no correlation between Ox and InsP6 within or among the four groups of cultivars ...


Oxalate And Phytate Concentrations In Seeds Of Soybean Cultivars, Harry T. Horner, Teresa Cervantes-Martinez, Rosanne Healy, Manju B. Reddy, Betsy L. Deardorff, Theodore B. Bailey, Ismail Al-Wahsh, Linda K. Massey, Reid G. Palmer 2016 Iowa State University

Oxalate And Phytate Concentrations In Seeds Of Soybean Cultivars, Harry T. Horner, Teresa Cervantes-Martinez, Rosanne Healy, Manju B. Reddy, Betsy L. Deardorff, Theodore B. Bailey, Ismail Al-Wahsh, Linda K. Massey, Reid G. Palmer

Harry Horner

This study analyzed soybean seeds from 116 cultivars for total, insoluble, and soluble oxalate (Ox), phytate (InsP6), calcium (Ca), and magnesium (Mg) because of their potential beneficial or harmful effects on human nutrition. These cultivars were divided into four groups (A-D) on the basis of the year and geographic location where they were grown. Oxalate concentration ranged from about 82 to 285 mg/100 g of dry seed. The InsP6 concentration ranged from 0.22 to 2.22 g/100 g of dry seed. There was no correlation between Ox and InsP6 within or among the four groups of cultivars ...


Initiation And Early Development Of Fiber In Wild And Cultivated Cotton, Kara M. Butterworth, Dean C. Adams, Harry T. Horner, Jonathan F. Wendel 2016 Iowa State University

Initiation And Early Development Of Fiber In Wild And Cultivated Cotton, Kara M. Butterworth, Dean C. Adams, Harry T. Horner, Jonathan F. Wendel

Harry Horner

Cultivated cotton fiber has undergone transformation from short, coarse fibers found in progenitor wild species to economically important, long, fine fibers grown globally. Morphological transformation requires understanding of development of wild fiber and developmental differences between wild and cultivated fiber.We examined early development of fibers, including abundance and placement on seed surface, nucleus position, presence of vacuoles, and fiber size and shape. Four species were studied using microscopic, morphometric, and statistical methods: Gossypium raimondii (wild D genome), Gossypium herbaceum (cultivated A genome), Gossypium hirsutum (wild tetraploid), and Gossypium hirsutum (cultivated tetraploid). Early fiber development is highly asynchronous in G ...


Mapping Morels: Predicting The Locations Of Morchella Species Through Environmental Factors Using The Gis System, Emily M. Stanevicius 2016 Augustana College - Rock Island

Mapping Morels: Predicting The Locations Of Morchella Species Through Environmental Factors Using The Gis System, Emily M. Stanevicius

Celebration of Learning

Morel mushrooms, Morechella esculenta and M. deliciosa, are known delicacies across the globe, ranging from exquisite dishes in French cuisine to Eastern palates such as Japanese Matsutake. According to literature, true morels diverged as their own genus about 129 million years, again which has led to the development of more than 177 species and have been part of the human diet since their beginning. However, the elusiveness of morels has contributed to the mushrooms infamy for rarity, and has even been known to sell for more than $40 per pound. This project seeks to aid in the search for morels ...


Effects Of Two Different Concentrations Of Miracle-Gro Solution On Wisconsin Fast Plant Growth, Peter Francissen, Joseph Gonziorek, Katherine Morgan, Danielle Deering 2016 Augustana College, Rock Island Illinois

Effects Of Two Different Concentrations Of Miracle-Gro Solution On Wisconsin Fast Plant Growth, Peter Francissen, Joseph Gonziorek, Katherine Morgan, Danielle Deering

Celebration of Learning

Wisconsin Fast Plant (Brassica Rapa, Brassicaceae) seeds were planted in three six-celled planting chambers. The chambers were filled with standard potting soil under continuous grow-lux lighting. A week after germination, one planting chamber (E1) was supplied with the recommended Miracle-Gro fertilizer solution. Our second experimental chamber (E2) was supplied with 1.5x the eight was 60.4. Our t-tests showed that the height of the control plants vs. E1 was significant (P=.010563), for control plants vs. E2 it was even more significant (P=.008813). However, for E1 vs. E2, our data was insignificant (P=.318883). Our hypothesis was that ...


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