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11,286 full-text articles. Page 1 of 161.

United In Diversity: Mechanosensitive Ion Channels In Plants, Eric S. Hamilton, Angela M. Schlegel, Elizabeth S. Haswell 2015 Washington University in St Louis

United In Diversity: Mechanosensitive Ion Channels In Plants, Eric S. Hamilton, Angela M. Schlegel, Elizabeth S. Haswell

Biology Faculty Publications

Mechanosensitive (MS) ion channels are a common mechanism for perceiving and responding to mechanical force. This class of mechanoreceptors is capable of transducing membrane tension directly into ion flux. In plant systems, MSion channels have been proposed to play a wide array of roles, from the perception of touch and gravity to the osmotic homeostasis of intracellular organelles. Three families of plant MS ion channels have been identified: the MscS-like (MSL), Mid1-complementing activity (MCA), and two-pore potassium (TPK) families. Channels from these families vary widely in structure and function, localize to multiple cellular compartments, and conduct chloride, calcium, and/or ...


Variable Frequency Of Plastid Rna Editing Among Ferns And Repeated Loss Of Uridine-To-Cytidine Editing From Vascular Plants, Wenhu Guo, Felix Grewe, Jeffrey P. Mower 2015 University of Nebraska-Lincoln

Variable Frequency Of Plastid Rna Editing Among Ferns And Repeated Loss Of Uridine-To-Cytidine Editing From Vascular Plants, Wenhu Guo, Felix Grewe, Jeffrey P. Mower

Faculty Publications from the Center for Plant Science Innovation

The distinct distribution and abundance of C-to-U and U-to-C RNA editing among land plants suggest that these two processes originated and evolve independently, but the paucity of information from several key lineages limits our understanding of their evolution. To examine the evolutionary diversity of RNA editing among ferns, we sequenced the plastid transcriptomes from two early diverging species, Ophioglossum californicum and Psilotum nudum. Using a relaxed automated approach to minimize false negatives combined with manual inspection to eliminate false positives, we identified 297 C-to-U and three U-to-C edit sites in the O. californicum plastid transcriptome but only 27 C-to-U and ...


2015 Update Mtg: Weed Research Update, Katherine Ghantous, Hilary A. Sandler 2015 UMass Amherst

2015 Update Mtg: Weed Research Update, Katherine Ghantous, Hilary A. Sandler

Cranberry Station Extension meetings

No abstract provided.


2015 Update Mtg: Weed Biology Affects Weed Management, Hilary A. Sandler, Katherine Ghantous 2015 University of Massachusetts - Amherst

2015 Update Mtg: Weed Biology Affects Weed Management, Hilary A. Sandler, Katherine Ghantous

Cranberry Station Extension meetings

No abstract provided.


2015 Update Mtg: Processes Of P Loss In Cranberry Floods, Casey Kennedy 2015 USDA ARS

2015 Update Mtg: Processes Of P Loss In Cranberry Floods, Casey Kennedy

Cranberry Station Extension meetings

No abstract provided.


2015 Update Mtg: Plant Pathology Update: New Diseases, Erika Saalau Rojas 2015 UMass Amherst Cranberry Exp Station

2015 Update Mtg: Plant Pathology Update: New Diseases, Erika Saalau Rojas

Cranberry Station Extension meetings

No abstract provided.


2015 Update Mtg: Phosphorus Update 2015, Carolyn J. DeMoranville 2015 UMass Amherst

2015 Update Mtg: Phosphorus Update 2015, Carolyn J. Demoranville

Cranberry Station Extension meetings

No abstract provided.


2015 Update Mtg: Nitrogen Movement In Cranberry Floodwaters, Carolyn J. DeMoranville, Rachel Jakuba, Christopher Neill, Casey Kennedy, Nick Alverson 2015 UMass Amherst

2015 Update Mtg: Nitrogen Movement In Cranberry Floodwaters, Carolyn J. Demoranville, Rachel Jakuba, Christopher Neill, Casey Kennedy, Nick Alverson

Cranberry Station Extension meetings

No abstract provided.


Changes In Corn Residue Quality Throughout The Grazing Period And Effect Of Supplementation Of Calves Grazing Corn Residue, Amanda J. Burken 2014 University of Nebraska-Lincoln

Changes In Corn Residue Quality Throughout The Grazing Period And Effect Of Supplementation Of Calves Grazing Corn Residue, Amanda J. Burken

Theses and Dissertations in Animal Science

Corn residue is an abundant feed source in Nebraska that can be utilized as an alternative winter feed. Calves were backgrounded on corn residue in order to determine gain and estimate forage intake when supplemented with distillers grains (DGS). Calves grazing the non-irrigated field gained more (1.03 kg/calf daily) when compared to those grazing the irrigated field (0.90 kg/calf daily; P < 0.01). In year 1, a quadratic effect for intake of DGS was present (P < 0.01) while year 2 observed a linear effect for increasing level of DGS (P < 0.01). The nutritional quality of corn residue was evaluated over time in order to determine changes in blade/sheath, cob, husk/shank and stem. Minimal changes in DM of the forage components occurred was grain reached 15.5% moisture. Digestibility of the blade/sheath declined linearly over time (P < 0.01) while the husk remained constant (P = 0.40). Cob digestibility decreased quadratically (P < 0.01) throughout the sampling period with few changes once grain reached 15.5% moisture. Differences observed in the digestibility of the blade/sheath were attributed to the effects of weathering. A third set of trials was conducted to evaluate the effects of by-product supplementation of calves grazing irrigated corn residue and supplemented with DGS or continuous access to lick tubs. The DGS treatment gained more (0.62 kg/calf daily) than the lick tub treatment (0.38 kg/calf daily; P < 0.01). Calves offered DGS consumed more supplement as a percentage of BW (0.52%) when compared with calves offered lick tubs (0.36%; P < 0.01) on a DM basis. Calves supplemented with DGS had a higher supplement efficiency (46.3% to 42.9%, DM basis) although no differences were present between treatments (P = 0.49). When analyzed on an OM basis, however, calves offered lick tubs had a numerically higher supplement efficiency (50.4 ...


Managing Threats To The Urban Forest: From Dutch Elm Disease To Emerald Ash Borer - Learning From Experience, Christopher J. Borman 2014 University of Nebraska-Lincoln

Managing Threats To The Urban Forest: From Dutch Elm Disease To Emerald Ash Borer - Learning From Experience, Christopher J. Borman

Doctoral Documents from Doctor of Plant Health Program

The urban forest provides important essential services to all municipalities; however, its value is often overlooked. The urban forest contributes to energy savings, environmental benefits, psychological well-being, and social benefits. Managing the urban forest in a sustainable manner is important if we wish to benefit from these services well into the future. Reliable management techniques have been created through previous experiences with pests, and these should be utilized and improved for use on urban forests.

American elm (Ulmus americana L.) was once a major component of the urban forests of North America. In 1927, Dutch elm disease (DED) was introduced ...


Modeling Grain And Straw Yields Of Wheat Using Back Propagation And Genetic Algorithm, Omar Maghawri Ibrahim Hassan Dr. 2014 City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab, Alexandria 21934, Egypt

Modeling Grain And Straw Yields Of Wheat Using Back Propagation And Genetic Algorithm, Omar Maghawri Ibrahim Hassan Dr.

Dr. Omar Maghawri Ibrahim

The first objective of this study was to model the effect of yield components, number of grain/spike, number of spikes/m2, and 1000 kernels weight on the grain yield and straw yield of wheat. An artificial neural network (ANN), multilayer perceptron feed forward neural network (MLP) was used for developing the predictive model. Two different training algorithms: back propagation (BP) and genetic algorithm (GA) were used to train the MLP which structured of three neurons in the input layer, one hidden layer of six neurons, and two neurons in the output layer. The second objective of the current study ...


Noteworthy Collection Of Papaver Rhoeas From Indiana, Jordan M. Marshall 2014 Indiana University-Purdue University Fort Wayne

Noteworthy Collection Of Papaver Rhoeas From Indiana, Jordan M. Marshall

Biology Faculty Publications

A new county record of Papaver rhoeas is reported in Allen County, Indiana. Voucher specimens have been deposited in the Indiana University-Purdue University Fort Wayne herbarium. Due to the location, a protected mesic prairie under active management, and the increasing number of county records in Indiana, there may be concern regarding this species collection.


Effect Of Photoperiod On Redox Regulation Of Phenotypic Plasticity And Cellular Growth In Chlorella Vulgaris, Lauren E. Hollis 2014 The University of Western Ontario

Effect Of Photoperiod On Redox Regulation Of Phenotypic Plasticity And Cellular Growth In Chlorella Vulgaris, Lauren E. Hollis

University of Western Ontario - Electronic Thesis and Dissertation Repository

Photoautotrophs are predisposed to maintain a balance between light energy absorption with the capacity to consume this energy through metabolism. An imbalance in energy flow may be a consequence of increased light intensity and is sensed as modulation of excitation pressure (EP). Chlorella vulgaris acclimated to continuous high EP exhibits a yellow-green phenotype characterized by reduced chlorophyll content and high chlorophyll a/b ratio with reduced light-harvesting complex abundance relative to the dark green phenotype of low EP-acclimated cultures. Previous studies on acclimation to EP in green algae have been conducted under constant growth light. To determine the role of ...


Pseudomonas Syringae Type Iii Effectors: Targets And Roles In Plant Immunity, Tania Y. Toruño 2014 University of Nebraska-Lincoln

Pseudomonas Syringae Type Iii Effectors: Targets And Roles In Plant Immunity, Tania Y. Toruño

Faculty Publications from the Center for Plant Science Innovation

Pseudomonas syringae is a Gram-negative bacterial pathogen that infects many crops. A central virulence strategy P. syringae uses to successfully infect plants is the injection of type III effector proteins (T3Es) into plant cells through a type IIII protein secretion system (T3SS). The T3SS is a molecular syringe found in many Gram-negative bacterial pathogens of plants and animals that transport T3Es from the bacterial cytosol into eukaryotic cells. T3Es disrupt host processes in the plant immune system required to restrict pathogen ingress. The plant innate immune system is divided in two branches, pathogen-associated molecular patterns (PAMP)-triggered immunity (PTI) and ...


Thylakoid Phosphorylation And Cell Morphology In The Antarctic Psychrophile, Chlamydomonas Sp. Uwo241, Beth Szyszka-Mroz 2014 The University of Western Ontario

Thylakoid Phosphorylation And Cell Morphology In The Antarctic Psychrophile, Chlamydomonas Sp. Uwo241, Beth Szyszka-Mroz

University of Western Ontario - Electronic Thesis and Dissertation Repository

The unicellular green microalga, Chlamydomonas sp. UWO 241, was isolated from Lake Bonney, Antarctica. A unique characteristic of this algal strain is its inability to undergo state transitions combined with an altered thylakoid protein phosphorylation profile, which suggests the absence of LHCII phosphorylation, and preferential phosphorylation of a set of novel proteins. Examination of the unique phosphoproteins revealed that they are associated with a large pigment-protein supercomplex, which contains components of both photosystem I and the cytochrome b6/f complex and likely functions in cyclic electron flow (CEF).

The absence of phosphorylation of LHCII proteins, associated with state transitions ...


2015 Spring Seed Guide, Teshome Regassa, Charles Shapiro 2014 University of Nebraska-Lincoln

2015 Spring Seed Guide, Teshome Regassa, Charles Shapiro

Agronomy & Horticulture -- Faculty Publications

NEBRASKA CORN HYBRID TESTS CROP PRODUCTION SUMMARY: According to the National Agricultural Statistics Service, there were 8.75 million acres of corn harvested in Nebraska in 2014 producing approximately 1.58 billion bushels of grain. The total average corn yield for Nebraska in 2014 was a record 181 bushels per acre (bu/a). Total corn yields from the previous 10 years are reported below.

NEBRASKA SOYBEAN VARIETY TESTS - 2014 - CROP PRODUCTION SUMMARY: According to the National Agricultural Statistics Service, there were 5.4 million acres of soybeans planted in Nebraska in 2014. 5.35 million acres were harvested producing around ...


The Effect Of Agricultural Practices On Sugar Beet Root Aphid (Pemphigus Betae Doane) And Beneficial Epigeal Arthropods, Rudolph J. Pretorius 2014 University of Nebraska-Lincoln

The Effect Of Agricultural Practices On Sugar Beet Root Aphid (Pemphigus Betae Doane) And Beneficial Epigeal Arthropods, Rudolph J. Pretorius

Dissertations and Student Research in Entomology

This study investigated the effect of several agricultural practices on the sugar beet root aphid (Pemphigus betae Doane) and beneficial epigeal natural enemies in western Nebraska sugar beet agroecosystems. Eight glyphosate-tolerant sugar beet varieties were evaluated under field conditions for their resistance to root aphids. High levels of aphid resistance were detected for some varieties. In conjunction to this, pitfall sampling was conducted to determine the beneficial epigeal natural enemy complex in the area, which could contribute to the management of both root aphids and glyphosate-resistant weeds. Ground beetles comprised an important and abundant component of this fauna, with 79 ...


Carbohydrate Metabolism And The Trehalose Biosynthetic Pathway In Maize Kernels Grown In Vitro Under Sucrose Starvation Stress, Samuel W. Bledsoe 2014 University of Nebraska-Lincoln

Carbohydrate Metabolism And The Trehalose Biosynthetic Pathway In Maize Kernels Grown In Vitro Under Sucrose Starvation Stress, Samuel W. Bledsoe

Theses, Dissertations, and Student Research in Agronomy and Horticulture

Drought is an increasing issue that many farmers encounter especially in hot arid climates with little rainfall. High temperatures and inadequate rainfall at certain stages in crop development can have disastrous consequences to yield. In maize, drought occurring near or during the flowering stage often causes significant kernel abortion that greatly impacts potential yield. The trehalose biosynthetic pathway has recently been found to be important in plant metabolism in response to stress in higher order plants. Trehalose is currently known throughout the plant and animal kingdoms as an osmoprotectant, high energy fuel source, structural component, and involved in pathogen response ...


Decision Support Tools To Address Climate Change: Climate Model - Land Surface Models, Zea Mays L. (Corn) Phenology And Evapotranspiration-Yield Sensitivity Models For Nebraska, Usa., Jane A. Okalebo 2014 University of Nebraska-Lincoln

Decision Support Tools To Address Climate Change: Climate Model - Land Surface Models, Zea Mays L. (Corn) Phenology And Evapotranspiration-Yield Sensitivity Models For Nebraska, Usa., Jane A. Okalebo

Dissertations & Theses in Natural Resources

Nebraska's climate is highly variable and is expected to change in the future with anthropogenic global warming (AGW), resulting in warmer spring and summer temperatures coupled with more erratic rainfall events. This has strong implications for agriculture in the region, yet it is not clear that current modeling and decision-support tools are adequate to address these looming changes and provide planning, mitigation and adaptation strategies. To address climate change and its implications to agriculture in Nebraska, a set of robust decision support tools are very crucial. This study herein are divided into three chapters, with each chapter addressing a ...


Pacific Plug & Liner Crop Shrinkage Evaluation, Jillian Balli 2014 California Polytechnic State University - San Luis Obispo

Pacific Plug & Liner Crop Shrinkage Evaluation, Jillian Balli

Horticulture and Crop Science

Crop Shrinkage has a major impact on a company’s bottom line. There are many ways to combat shrinkage. This report focuses on shrinkage reduction by adjusting buffer planting numbers to reflect the actual number of plants lost in production. Inaccurate buffer can cause the cost of production to be inaccurate as well. This report evaluates crop shrinkage of a greenhouse located in Watsonville, CA called Pacific Plug & Liner.


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