Species Associated With Cytospora Canker On Populus Tremuloides,
2015
Colorado State University - Fort Collins
Species Associated With Cytospora Canker On Populus Tremuloides, Jeff B. Kepley, F. Brent Reeves, William R. Jacobi, Gerard C. Adams
Department of Plant Pathology: Faculty Publications
A new species that is often associated with Cytospora chrysosperma was found commonly on stems of Populus tremuloides in Colorado. This fungus is illustrated and described as Cytospora notastroma sp. nov., and morphological and molecular data demonstrate that the new species is distinct from C. chrysosperma, C. nivea, C. translucens, and other species found on Populus. Diagnostic features are superficially visible, darkly pigmented conceptacles circumscribing the ascostromata and conidiomata and surrounding the white to grayish-white discs; some isolates produce a Phialocephala-like synanamorph in vitro in addition to the Cytospora anamorph.
Draft Genome Sequence Of Cercospora Arachidicola, Causal Agent Of Early Leaf Spot In Peanuts,
2015
USDA-ARS National Peanut Research Laboratory, Dawson, Georgia
Draft Genome Sequence Of Cercospora Arachidicola, Causal Agent Of Early Leaf Spot In Peanuts, Valerie A. Orner, Emily G. Cantowine, Xinye Monica Wang, Amr Abouelleil, James Bochicchio, Chad Nusbaum, Albert C. Culbreath, Zaid Abdo, Renee S. Arias
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Cercospora arachidicola, causal agent of early leaf spot, is an economically important peanut pathogen. Lack of genetic information about this fungus prevents understanding the role that potentially diverse genotypes may have in peanut breeding programs. Here, we report for the first time a draft genome sequence of C. arachidicola.
The Taurine Biosynthetic Pathway Of Microalgae,
2015
University of Nebraska-Lincoln
The Taurine Biosynthetic Pathway Of Microalgae, Rahul Tevatia, James Allen, Deepak Rudrappa, Derrick White, Thomas E. Clemente, Heriberto Cerutti, Yaşar Demirel, Paul H. Blum
Center for Plant Science Innovation: Faculty Publications
Taurine (2-aminoethanesulfonic acid) is an amino acid–like compound widely distributed in animals and an essential nutrient in some species. Targeted metabolomics of marine and freshwater microalgae combined with medium supplementation identified biosynthetic pathway intermediates and necessary catalytic activities. Genomic analysis was then used to predict the first taurine biosynthetic pathway in these organisms. MRM-based electrospray ionization (ESI) LC–MS/MS analysis demonstrated that taurine is synthesized using a carbon backbone from L-serine combined with sulfur derived from sulfate. Metabolite analysis showed a nonuniform pattern in levels of pathway intermediates that were both species and supplement dependent. While increased culture salinity raised taurine …
Nitrogen Management Of Forages In Relation To Gaseous Emissions – New Approaches And Considerations,
2015
Agriculture and Agri-Food Canada, Canada
Nitrogen Management Of Forages In Relation To Gaseous Emissions – New Approaches And Considerations, Shabtai Bittman, Derek Hunt
IGC Proceedings (1977-2023)
Forages have a high N demand, a long growing season, and an effective root system all contributing to effective nutrient capture. However forages are restrictive in methods available for mitigating gaseous losses both as NH3 and as N2O, due to both practical and cost considerations. Strategies are needed to address the challenges of both N efficiency and N losses. Agronomic techniques in long term experiments can enhance estimates of N loss pathways and N efficiency, and demonstrate the importance of integrated multinutrient approaches. The dual manure stream concept divides manure into a thin fraction suitable as an …
Impact Of Market Forces On Product Quality And Grassland Condition,
2015
Charles Sturt University, Australia
Impact Of Market Forces On Product Quality And Grassland Condition, David L. Michalk, Jianping Wu, Warwick B. Badgery, David R. Kemp
IGC Proceedings (1977-2023)
Meeting demands for livestock products which are predicted to more than double during the next 20 years, is central to the challenge of feeding the world sustainably. Smallholders will play a key role in achieving global security in animal protein. However, this requires a shift from subsistence to market-oriented farming where production efficiency not the number of livestock is the key focus with the aim of producing ‘more from less’. For grassland-based ruminant production, reducing stocking rate from current unsustainable levels under subsistence management is an essential first step to producing more production and profit from fewer animals. This is …
Stakeholders Integration For Sustainable Use Of Temperate Forage/Livestock Agriculture,
2015
University of Kentucky
Stakeholders Integration For Sustainable Use Of Temperate Forage/Livestock Agriculture, Garry D. Lacefield, Don Ball
IGC Proceedings (1977-2023)
Forage/livestock production is complex, and best management options are often site-specific, but some concepts have broad application. The intent of this article is to provide an overview of research-based management approaches that the authors believe are necessary to ensure the sustainability of forage/livestock farms. This overview discussion is needed because livestock agriculture is changing, thus creating both challenges and opportunities for producers. In the last 30 years, beef numbers in the USA have declined by 20%, but production per cow has more than doubled, resulting in increased total production on less land with fewer animals. Similar statistics exist for the …
Socio-Cultural Factors Challenging Development Interventions In Cattle Production In The Remote Areas Of Vietnam,
2015
Vietnam National University of Agriculture, Vietnam
Socio-Cultural Factors Challenging Development Interventions In Cattle Production In The Remote Areas Of Vietnam, Duong-Nam Ha, Pham-Van Hung, Tran-The Cuong, Ninh-Xuan Trung, Tran-Van Long, Laurie Bonney, Peter A. Lane, Guillaume Duteurtre, Stephen Ives
IGC Proceedings (1977-2023)
The northwest highlands of Vietnam are characterized by high altitude, low infrastructure, and low population densities composed of a wide diversity of different ethnic groups. Their socio-cultural characteristics strongly influence their lifestyle and production systems, including agricultural activities. The majority of these people have suffered from slow economic development, with the highest poverty rate in the country. This is a real need for plausible interventions where behavioral changes of smallholders throughout local value chains would be a critical foundation. Our project implemented in this context of development in the Northwest highlands of Vietnam aims to understand the role of socio-cultural …
Changing Grassland Scenario In Developing Countries--Economical And Social Perspective,
2015
Livestock and Irrigated Value Chains for Ethiopian Smallholders/International Livestock Research Institute, Ethiopia
Changing Grassland Scenario In Developing Countries--Economical And Social Perspective, Abule Ebro
IGC Proceedings (1977-2023)
Grasslands are mainly used for livestock production in developing countries although they have been facing contradictory pressures, i.e., increased demand for natural resources and animal products to cope with rising human populations. On the other, there is a need to preserve the environment and ecosystem. This paper reviewed the causes of grassland changes, the economic and social perspective of changing grasslands with more emphasis on dry lands. Different indicators were used to assess the economic (livestock production, wildlife and tourism, crop production, ecosystem services) and social (traditional institutions, mobility, land tenure and grazing systems) perspectives of changing grassland. The major …
Conservation Of Grassland Plant Genetic Resources Through People Participation,
2015
Indian Grassland and Fodder Research Institute, India
Conservation Of Grassland Plant Genetic Resources Through People Participation, D. R. Malaviya, Ajoy K. Roy, P. Kaushal
IGC Proceedings (1977-2023)
Agrobiodiversity provides the foundation of all food and feed production. Hence, need of the time is to collect, evaluate and utilize the biodiversity globally available. Indian sub-continent is one of the world’s mega centers of crop origins. India possesses 166 species of agri-horticultural crops and 324 species of wild relatives. India is reported to have five grass covers identified. There have been almost nil human interference in terms of selection pressure; hence, the biodiversity is well conserved in these grazing lands. There is need of a system approach to understanding biodiversity that moves significantly beyond taxonomy and species observations. In …
Breeding Strategies To Improve Fodder Legumes With Special Emphasis On Clover And Medics,
2015
Indian Grassland and Fodder Research Institute, India
Breeding Strategies To Improve Fodder Legumes With Special Emphasis On Clover And Medics, Ajoy K. Roy, D. R. Malaviya, P. Kaushal
IGC Proceedings (1977-2023)
In India, Forage has a unique integration of agriculture and animal industry in diversified rich cultural environment. Greater part of rural economy in India relies much upon mixed farming system, a well-knit combination of crop production and livestock rearing. In India, grazing-based livestock husbandry plays an important role in the rural economy as around 50% of animals depend on grazing. Pasturelands over an area of 12 Mha constitute the main grazing resources that are available. Nearly 30 pastoral communities in hilly or arid/semi-arid regions in northern and western parts of India, depend on grazing-based livestock production. Nomadic pastoralism, a traditional …
Front Matter [23rd International Grassland Congress Proceedings],
2015
University of Kentucky
Front Matter [23rd International Grassland Congress Proceedings], National Organizing Committee, International Grassland Congress
IGC Proceedings (1977-2023)
No abstract provided.
Bioethanol: Feedstock Alternatives, Pretreatments,Lignin Chemistry, And The Potential For Green Value-Added Lignin Co-Products,
2015
University of Arkansas, Fayetteville
Bioethanol: Feedstock Alternatives, Pretreatments,Lignin Chemistry, And The Potential For Green Value-Added Lignin Co-Products, Ruben Michael Ceballos, N. A. Batchenkova, M.K. Y. Chan, A. X. Duffing-Romero, A. E. Nelson, S. Man
Biological Sciences Faculty Publications and Presentations
Major challenges still exist in the cost-competitive production of cellulosic ethanol. Lignocellulose deconstruction using physiochemical pretreatments continues to be the most efficient way to remove lignin and expose cellulose for enzyme-mediated sugar reduction. Recent interest in the development of “value-added” lignin co-products and the desire to reduce the use of hazardous materials has prompted a resurgence of interest in alternative lignocellulosic feedstock and research into environment-friendly biological pretreatments. This article provides an overview of bioethanol processes and economics, standard and alternative feedstocks, physiochemical and biological pretreatments, and lignin chemistry. The chemistry and mode of action of ligninolytic and cellulolytic enzymes …
Characterization Of Colletotrichum Species Causing Bitter Rot Of Apples In Kentucky Orchards,
2015
University of Kentucky
Characterization Of Colletotrichum Species Causing Bitter Rot Of Apples In Kentucky Orchards, Misbakhul Munir
Theses and Dissertations--Plant Pathology
Multiple species of Colletotrichum can cause bitter rot disease of apple, but the identities and relative representation of the species causing the disease in Kentucky are unknown. A total of 475 Colletotrichum isolates were collected from diseased apples in 25 counties and characterized both morphologically and by using various molecular approaches. Four morphotypes corresponded to reported descriptions of bitter rot species. Morphotype 1, distinguished by the production of a pink color on potato dextrose agar (PDA), orange conidial masses, and fusiform spores, was consistent with C. acutatum. Morphotype 2, which produced gray or white mycelial colonies with orange conidial masses …
Grassland Resources And Protections In The Yellow River Source Zone On The Qinghai-Tibet Plateau,
2015
Qinghai University, China
Grassland Resources And Protections In The Yellow River Source Zone On The Qinghai-Tibet Plateau, Xilai Li, Gary J. Brierley, Youming Qiao, George L. W. Perry, Jay King Gao
IGC Proceedings (1977-2023)
This paper summarises resources and protections of the Yellow River Source Zone on the Qinghai-Tibet Plateau. A concerted effort has been made to address concerns for overgrazing on the alpine steppe and alpine meadow landscapes in the source zone of the Yellow River. An assessment of the impacts of overgrazing includes consideration of the role of small mammals (on the one hand they are considered as a critical ecosystem engineer, on the other they are perceived as a major threatening pest). Analyzed in this paper are management options in the restoration of degraded grasslands.
Importance Of Livestock Production From Grasslands For National And Local Food And Nutritional Security In Developing Countries,
2015
International Livestock Research Institute, Kenya
Importance Of Livestock Production From Grasslands For National And Local Food And Nutritional Security In Developing Countries, Iain A. Wright
IGC Proceedings (1977-2023)
Grazing lands cover more than a quarter of the world’s land surface, often on land that is unsuitable for other forms of use. Despite the perception that productivity is inherently low, the contribution of grasslands in food security in developing countries is significant. However the challenges of spatial and temporal variability of primary productivity need to be managed and mobility of livestock is key to this. Appropriate land management and governance arrangements are essential for facilitating this mobility and for creating the circumstances in which technical options for reducing variability and risk in livestock keeping can be deployed and to …
Front Matter [Preface And List Of Contributors],
2015
University of Kentucky
Front Matter [Preface And List Of Contributors], National Organizing Committee, International Grassland Congress
IGC Proceedings (1977-2023)
No abstract provided.
Promising Forage Options To Enhance Livestock Production In Mediterranean Climate Agricultural Systems,
2015
International Center for Agricultural Research in the Dry Areas, Syria
Promising Forage Options To Enhance Livestock Production In Mediterranean Climate Agricultural Systems, Serkan Ates, Hayley C. Norman, Hichem Ben Salem, Bradley Nutt, Harun Cicek
IGC Proceedings (1977-2023)
The increasing demand for food, fibre and animal products inevitably requires intensifying agricultural production worldwide. This can present a number of environmental and farming systems challenges in Mediterranean climate areas of the world. Developments of novel strategies, employing ecologically sound intensification practices, are crucial to enhance production in the Mediterranean agropastoral production systems. In this paper, we have discussed forage based systems that improve productivity, profitability, environmental quality and resilience of the farming systems. Key opportunities include better use and integration of diverse genetic resources, new agronomic techniques and the utilization of perennial forage plants that are adapted to land …
New Methodologies For Grasslands Monitoring,
2015
Institute of Geodesy and Cartography Remote Sensing Center, Poland
New Methodologies For Grasslands Monitoring, Katarzyna Dabrowska-Zielinska, Piotr Goliński, Marit Jorgensen, Jørgen Mølmann, Gregory Taff, Monika Tomaszewska, Barbara Golińska, Maria Budzynska, Martyna Gatkowska
IGC Proceedings (1977-2023)
Monitoring grassland areas to assess changes in their condition over time has been the subject of a lot of research at different scales. Initially the techniques focused on field-based measurements, and modelling. However, several obtained data were site specific. Based on the increase in availability of remote sensing data and products, there is an expectation that remote sensing can provide rapid and definite answers to the challenges of detecting and monitoring grassland conditions and associated changes in productivity. At the time of European Copernicus Programme, the new possibilities of satellite data from the group of Sentinel satellites give the new …
Grazing Management Options For Maintaining Optimum Pasture Composition And Utilization,
2015
U.S. Department of Agriculture
Grazing Management Options For Maintaining Optimum Pasture Composition And Utilization, Glen E. Aiken
IGC Proceedings (1977-2023)
Global demand for meat and dairy products will continue to increase over the 21st century, however, the global forage-based livestock industry will be challenged in meeting production goals with minimal impact of the environment. Sustainable production of grazing livestock will depend on the use of carefully planned grazing management strategies. Development of a grazing management plan involves making two decisions: determining the livestock density at which pastures are stocked and settling on the method used to graze the pastures. Stocking rate indirectly affects output per animal and per hectare through its direct effect on forage mass and pasture composition. A …
Enhancing Grassland Productivity Through Disease Management Of Grass And Forage Species,
2015
Lanzhou University, China
Enhancing Grassland Productivity Through Disease Management Of Grass And Forage Species, Tingyu Duan, Chunjie Li, Yanzhong Li, Binhua Yu, Zhibiao Nan
IGC Proceedings (1977-2023)
The total area of grassland in China is about 400 million hectares, accounting for 41.7% of the country’s land area, which plays important role in ecological construction and food security assurance of the national. However, diseases of grass and forage limited the development of the pastoral agriculture. There are more than1500 new diseases were reported in the past 16 years with more and more new diseases were discovered. The damage to grassland is becoming more severe with the known diseases prevalent areas expanding.
