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Sorgo Dicta - 10 Bmr: Sorgo De Doble Propósito Especial Para Ensilaje, Alberto Morán Araujo, Miriam Villeda 2012 Secretaría de Agricultura y Ganadería (Tegucigalpa, Honduras)

Sorgo Dicta - 10 Bmr: Sorgo De Doble Propósito Especial Para Ensilaje, Alberto Morán Araujo, Miriam Villeda

INTSORMIL Scientific Publications

La Dirección de Ciencia y Tecnología Agropecuaria (DICTA), con el propósito de mejorar la productividad de la ganadería en Honduras, produce la variedad de sorgo DICTA‐10 BMR.

Con esta variedad de sorgo, DICTA contribuye con la seguridad alimentaria de las familias productoras, de escasos recursos.

Esta variedad proviene de la variedad de sorgo CENTA S2 a la que se le introdujeron los genes “BMR 12,” cuya característica más evidente es que la vena central de las hojas es de color café.

Este sorgo de nervadura marrón o BMR (Brown Middle Rib) se caracteriza por tener contenidos bajos de lignina ...


Superweeds And Suspect Seeds: Does The Genetically-Engineered Crop Deregulation Process Put American Agriculture At Risk, Margaret Sova McCabe 2012 University of New Hampshire School of Law

Superweeds And Suspect Seeds: Does The Genetically-Engineered Crop Deregulation Process Put American Agriculture At Risk, Margaret Sova Mccabe

Law Faculty Scholarship

The federal government’s regulatory approach to genetically engineered (GE) crops, known as “The Framework”, is now twenty-five years old. Despite two and half decades of a consistent regulatory regime, GE crop and food regulation remains controversial. This article suggests that regulatory science and its tenets of independence, transparency, and public science should guide reforms of The Framework so that it is an efficient and reliable regulatory system. The article has four parts: 1) it provides a brief overview of the history of GE crop regulation; 2)it describes the key attributes of The Framework and related regulatory documents, with ...


Complementation Contributes To Transcriptome Complexity In Maize (Zea Mays L.) Hybrids Relative To Their Inbred Parents, Anja Paschold, Yi Jia, Caroline Marcon, Steve Lund, Nick B. Larson, Cheng-Ting Yeh, Stephan Ossowski, Christa Lanz, Dan Nettleton, Patrick S. Schnable, Frank Hochholdinger 2012 University of Bonn

Complementation Contributes To Transcriptome Complexity In Maize (Zea Mays L.) Hybrids Relative To Their Inbred Parents, Anja Paschold, Yi Jia, Caroline Marcon, Steve Lund, Nick B. Larson, Cheng-Ting Yeh, Stephan Ossowski, Christa Lanz, Dan Nettleton, Patrick S. Schnable, Frank Hochholdinger

Statistics Publications

Typically, F1-hybrids are more vigorous than their homozygous, genetically distinct parents, a phenomenon known as heterosis. In the present study, the transcriptomes of the reciprocal maize (Zea mays L.) hybrids B73×Mo17 and Mo17×B73 and their parental inbred lines B73 and Mo17 were surveyed in primary roots, early in the developmental manifestation of heterotic root traits. The application of statistical methods and a suitable experimental design established that 34,233 (i.e., 86%) of all high-confidence maize genes were expressed in at least one genotype. Nearly 70% of all expressed genes were differentially expressed between the two ...


Tritrophic Interactions Among Bt Maize, An Insect Pest And Entomopathogens: Effects On Development And Survival Of Western Corn Rootworm, Jennifer L. Petzold-Maxwell, Stefan T. Jaronski, Aaron J. Gassmann 2012 Iowa State University

Tritrophic Interactions Among Bt Maize, An Insect Pest And Entomopathogens: Effects On Development And Survival Of Western Corn Rootworm, Jennifer L. Petzold-Maxwell, Stefan T. Jaronski, Aaron J. Gassmann

Entomology Publications

Agricultural systems often provide a model for testing ecological hypotheses, while ecological theory can enable more effective pest management. One of the best examples of this is the interaction between host-plant resistance and natural enemies. With the advent of crops that are genetically modified to produce insecticidal toxins from the bacterium Bacillus thuringiensis (Bt), a new form of host-plant resistance has been introduced to agroecosystems. How Bt crops interact with natural enemies, especially insect pathogens in below-ground systems, is not well understood, but provides a unique opportunity to study below-ground tritrophic interactions. In this study, we used two species of ...


The Genetics Of Fertility In Soybean, Reid G. Palmer, Devinder Sandhu, Harry T. Horner, Ram J. Singh 2012 Iowa State University

The Genetics Of Fertility In Soybean, Reid G. Palmer, Devinder Sandhu, Harry T. Horner, Ram J. Singh

Genetics, Development and Cell Biology Presentations, Posters and Proceedings

Male and female reproductive structures play an important role in seed development in plants. Abnormalities in male or female reproductive structures can lead to sterility. In soybean, Glycine max (L.) Merr., about 75 sterility mutants have been identified and most of them have been mapped to chromosomes. Mapping results have shown that some chromosomal regions are hotspots for fertility genes. Fine mapping of some of the male-sterile, female-fertile mutants and male-sterile, femalesterile mutants resulted in identification of candidate genes for fertility. Sequence comparisons further helped in locating a few putative candidates. A CACTA- like transposable element that is responsible for ...


Molecular Phylogenetics Of Alternanthera (Gomphrenoideae, Amaranthaceae): Resolving A Complex Taxonomic History Caused By Different Interpretations Of Morphological Characters In A Lineage With C4 And C3-C4 Intermediate Species, Ivonne Sánchez-Del Pino, Timothy J. Motley, Thomas Borsch 2012 Old Dominion University

Molecular Phylogenetics Of Alternanthera (Gomphrenoideae, Amaranthaceae): Resolving A Complex Taxonomic History Caused By Different Interpretations Of Morphological Characters In A Lineage With C4 And C3-C4 Intermediate Species, Ivonne Sánchez-Del Pino, Timothy J. Motley, Thomas Borsch

Biological Sciences Faculty Publications

Aternanthera (Amaranthaceae) is a diverse genus (80-200 species) largely restricted to the American Tropics. With Pedersenia and Tidestromia, it makes up the Alternantheroid clade in Gomphrenoideae. Parsimony and Bayesian analyses of nucleotide sequences of nuclear (ITS) and plastid (rpl16, trnL-F) and morphological characters identify that the capitate stigma of Alternanthera is a synapomorpy within the Alternantheroids. Within Alternanthera, two major clades were resolved, both of which were marked by otherwise homoplasious characters of the gynoecium: Clade A [99% jackknife (JK); 1.0 posterior probability (PP)] with nine species and Clade B (60% JK; 0.98 PP) with 22 species. Four ...


Development And Application Of Methods Used To Source Prehistoric Southwestern Maize: A Review, Larry Benson 2012 U.S. Geological Survey

Development And Application Of Methods Used To Source Prehistoric Southwestern Maize: A Review, Larry Benson

USGS Staff -- Published Research

Archaeological cobs free of mineral contaminants should be used to source the soils in which they were grown. Mineral contaminants often contain much higher concentrations of metals than vegetal materials and can alter a cob’s apparent metal and heavy-isotope content. Cleaning a cob via immersion in an acid solution for more than a few minutes will result in the incongruent and sometimes complete leaching of metals, including strontium (Sr), from the cob. When using 87Sr/86Sr to determine the location of potential agriculture fields, it is best to either integrate several depth-integrated soil samples or to integrate ...


Larval Survival And Plant Injury Of Cry1ab-Susceptible, -Resistant, And -Heterozygous Genotypes Of The Sugarcane Borer On Transgenic Corn Containing Single Or Pyramided Bt Genes, David S. Wangila, B. Rogers Leonard, Yaoyu Bai, Graham P. Head, Fangneng Huang 2012 University of Nebraska-Lincoln

Larval Survival And Plant Injury Of Cry1ab-Susceptible, -Resistant, And -Heterozygous Genotypes Of The Sugarcane Borer On Transgenic Corn Containing Single Or Pyramided Bt Genes, David S. Wangila, B. Rogers Leonard, Yaoyu Bai, Graham P. Head, Fangneng Huang

Faculty Publications: Department of Entomology

Transgenic corn (Zea mays L.) products expressing multiple Bt proteins targeting a same group of insect pests have become commercially available in the U.S. The first commercialized pyramided Bt corn technologies for managing lepidopteran pests include Genuity® VT Triple Pro™ and Genuity® SmartStax™. In this study, larval survival and plant injury of Cry1Ab-susceptible (Cry1Ab-SS), -resistant (Cry1Ab-RR), and -heterozygous (Cry1Ab-RS) genotypes of the sugarcane borer, Diatraea saccharalis F., on five commercial corn hybrids were evaluated in a leaf tissue bioassay and two greenhouse trials during 2010–2011. The five hybrids included two non-Bt corn and three Bt corn hybrids representing ...


Metabolic And Gene Expression Changes Triggered By Nitrogen Deprivation In The Photoautotrophically Grown Microalgae Chlamydomonas Reinhardtii And Coccomyxa Sp. C-169, Joseph Msanne, Di Xu, Anji Reddy Konda, J. Armando Casas-Mollano, Tala Awada, Edgar B. Cahoon, Heriberto Cerutti 2012 University of Nebraska-Lincoln

Metabolic And Gene Expression Changes Triggered By Nitrogen Deprivation In The Photoautotrophically Grown Microalgae Chlamydomonas Reinhardtii And Coccomyxa Sp. C-169, Joseph Msanne, Di Xu, Anji Reddy Konda, J. Armando Casas-Mollano, Tala Awada, Edgar B. Cahoon, Heriberto Cerutti

Faculty Publications from the Center for Plant Science Innovation

Microalgae are emerging as suitable feedstocks for renewable biofuel production. Characterizing the metabolic pathways involved in the biosynthesis of energy-rich compounds, such as lipids and carbohydrates, and the environmental factors influencing their accumulation is necessary to realize the full potential of these organisms as energy resources. The model green alga Chlamydomonas reinhardtii accumulates significant amounts of triacylglycerols (TAGs) under nitrogen starvation or salt stress in medium containing acetate. However, since cultivation of microalgae for biofuel production may need to rely on sunlight as the main source of energy for biomass synthesis, metabolic and gene expression changes occurring in Chlamydomonas and ...


Uridylation Of Mirnas By Hen1 Suppressor1 In Arabidopsis, Guodong Ren, Xuemei Chen, Bin Yu 2012 University of Nebraska-Lincoln

Uridylation Of Mirnas By Hen1 Suppressor1 In Arabidopsis, Guodong Ren, Xuemei Chen, Bin Yu

Faculty Publications from the Center for Plant Science Innovation

HEN1-mediated 2′-O-methylation has been shown to be a key mechanism to protect plant microRNAs (miRNAs) and small interfering RNAs (siRNAs) as well as animal piwi-interacting RNAs (piRNAs) from degradation and 3′ terminal uridylation [1–8]. However, enzymes uridylating unmethylated miRNAs, siRNAs, or piRNAs in hen1 are unknown. In this study, a genetic screen identified a second-site mutation hen1 suppressor1-2 (heso1-2) that partially suppresses the morphological phenotypes of the hypomorphic hen1-2 allele and the null hen1-1 allele in Arabidopsis. HESO1 encodes a terminal nucleotidyl transferase that prefers to add untemplated uridine to the 3′ end of RNA, which is completely ...


Comparative Analysis Of Grapevine Whole-Genome Gene Predictions, Functional Annotation, Categorization And Integration Of The Predicted Gene Sequences, Jerome Grimplet, John Van Hemert, Pablo Carbonell-Bejerano, Jose Diaz-Riquelme, Julie Dickerson, Anne Fennell Dr, Mario Pezzotti, Jose M. Martinez-Zapater 2012 Universidad de La Rioja

Comparative Analysis Of Grapevine Whole-Genome Gene Predictions, Functional Annotation, Categorization And Integration Of The Predicted Gene Sequences, Jerome Grimplet, John Van Hemert, Pablo Carbonell-Bejerano, Jose Diaz-Riquelme, Julie Dickerson, Anne Fennell Dr, Mario Pezzotti, Jose M. Martinez-Zapater

Agronomy, Horticulture and Plant Science Faculty Publications

Background: The first draft assembly and gene prediction of the grapevine genome (8X base coverage) was made available to the scientific community in 2007, and functional annotation was developed on this gene prediction. Since then additional Sanger sequences were added to the 8X sequences pool and a new version of the genomic sequence with superior base coverage (12X) was produced.
Results: In order to more efficiently annotate the function of the genes predicted in the new assembly, it is important to build on as much of the previous work as possible, by transferring 8X annotation of the genome to the ...


Efficacy Of A Novel Molecular Tool In Silencing Arabidopsis Genes, Chase Purnell, Vibha Srivastava, M. Aydin Akbudak, Scott J. Nicholson 2012 University of Arkansas for Medical Sciences

Efficacy Of A Novel Molecular Tool In Silencing Arabidopsis Genes, Chase Purnell, Vibha Srivastava, M. Aydin Akbudak, Scott J. Nicholson

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

RNA interference (RNAi), a pathway capable of silencing genes, has until recently only been achievable in the laboratory by the use of one method, expression of inverted repeat sequences of DNA. These constructs generate a double-stranded RNA, which in turn induce post-transcriptional silencing of other genes that bear sequence homology with the transgene. This approach of targeted gene silencing is extremely useful for studying the function of genes and engineering new traits in both plants and animals. It has recently been discovered that a transgene lacking the polyadenylation signal, called a truncated transgene, is also capable of inducing RNAi in ...


Evaluating Grain Food Potential Of Wild Relatives Of Rice, Shabana Kasem 2012 Southern Cross University

Evaluating Grain Food Potential Of Wild Relatives Of Rice, Shabana Kasem

Theses

Cultivated rice, Oryza sativa, is the major calorie provider for two thirds of the world population and in developing countries is a major source of proteins and some micro nutrients. Rice is mainly favoured for its starch content which has a myriad of applications in food and non-food industries. Rice comes from just two species of the Oryza genus which consists of 23 species. A number of these have contributed to the production of a commercial species with increased pest and disease resistance and male sterility. Despite this the starch properties and the cropping potential of many these varieties are ...


Alternating Temperatures Promote Seed Germination Of Miscanthus Sinensis, Erik J. Christian, A. Susana Goggi 2012 Iowa State University

Alternating Temperatures Promote Seed Germination Of Miscanthus Sinensis, Erik J. Christian, A. Susana Goggi

Agronomy Publications

Miscanthus sinensis can propagate through seed. However, there is little information regarding seed germination requirements. The objective of this study was to determine the optimal germination temperature requirements for the species. Seed germination was studied using a two-way thermogra- dient table without light. The temperature gradient in the table had 30 cells with alternating day/night temperatures and 6 cells with constant tempera- tures. The constant temperature cells were 10, 16, 22, 28, 34, and 40 °C, and the alternating temperature cells were a combination of these same temperatures. Fifteen of the alternating temperatures were higher for 16 h and ...


Letter From The Dean, Michael Vayda 2012 University of Arkansas, Fayetteville

Letter From The Dean, Michael Vayda

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.


Post-Transcriptional Control Of Mirna Abundance In Arabidopsis, Guodong Ren, Bin Yu 2012 University of Nebraska-Lincoln

Post-Transcriptional Control Of Mirna Abundance In Arabidopsis, Guodong Ren, Bin Yu

Faculty Publications from the Center for Plant Science Innovation

MicroRNAs (miRNAs) are a class of small non-coding RNAs (small RNAs) that are 20–24nt in length and predominantly repress gene expression at post-transcriptional levels. They regulate many biological processes including development, metabolism and physiology. Numerous studies have revealed that the steady-state levels of miRNA are under sophisticated control to ensure their proper function. In this review, we summarize recent advances on regulation of miRNA processing and stability in plants.


The Dna- And Rna-Binding Protein Factor Of Dna Methylation 1 Requires Xh Domain-Mediated Complex Formation For Its Function In Rna-Directed Dna Methylation, Meng Xie, Guodong Ren, Chi Zhang, Bin Yu 2012 University of Nebraska-Lincoln

The Dna- And Rna-Binding Protein Factor Of Dna Methylation 1 Requires Xh Domain-Mediated Complex Formation For Its Function In Rna-Directed Dna Methylation, Meng Xie, Guodong Ren, Chi Zhang, Bin Yu

Faculty Publications from the Center for Plant Science Innovation

Studies have identified a sub-group of SGS3-LIKE proteins including FDM1–5 and IDN2 as key components of RNA-directed DNA methylation pathway (RdDM). Although FDM1 and IDN2 bind RNAs with 5' overhangs, their functions in the RdDM pathway remain to be examined. Here we show that FDM1 interacts with itself and with IDN2. Gel filtration suggests that FDM1 may exist as a homodimer in a heterotetramer complex in vivo. The XH domain of FDM1 mediates the FDM1–FDM1 and FDM1–IDN2 interactions. Deletion of the XH domain disrupts FDM1 complex formation and results in loss-of-function of FDM1. These results demonstrate that ...


Critical Roles Of Rna-Binding Proteins In Mirna Biogenesis In Arabidopsis, Guodong Ren, Bin Yu 2012 University of Nebraska-Lincoln

Critical Roles Of Rna-Binding Proteins In Mirna Biogenesis In Arabidopsis, Guodong Ren, Bin Yu

Faculty Publications from the Center for Plant Science Innovation

MicroRNAs (miRNAs) are key regulators of gene expression and play critical roles in modulating metabolism, development and physiology in animals and plants. miRNA levels are transcriptionally and post-transcriptionally controlled for their proper function. Recent studies have shown that RNA-binding proteins play important roles in producing miRNAs by affecting the accurate and/or efficient processing of precursors of miRNAs. Many of these RNA-binding proteins also have roles in general RNA metabolism, indicating potential connections between miRNA biogenesis and other RNA metabolism. Here, we focus on the function of several RNA-binding proteins in miRNA biogenesis in Arabidopsis.


A Modified Method To Screen For Partial Resistance To Phytophthora Sojae In Soybean, Silvina Stewart, Alison E. Robertson 2012 Iowa State University

A Modified Method To Screen For Partial Resistance To Phytophthora Sojae In Soybean, Silvina Stewart, Alison E. Robertson

Plant Pathology and Microbiology Publications

Phytophthora root and stem rot, caused by Phytophthora sojae Kauf and Gerd, is one of the most damaging diseases of soybean [Glycine max (L.) Merr.] in the United States. Partial resistance (PR), which is defined as the relative ability of a soybean plant to survive root infection without showing severe symptoms, is an effective way to manage this disease. A modification of the layer test method used to screen for PR to P. sojae in soybean was evaluated. Instead of the P. sojae-colonized agar layer, which is used in the current greenhouse cup assay, P. sojaeinfested rice (Oryza sativa L ...


Morphological Variation In The Wild-Weedy Complex Of Sorghum Bicolor In Situ In Western Kenya: Preliminary Evidence Of Crop-To-Wild Gene Flow?, James A. Okeno, Evans Mutegi, Santie de Villiers, Jeffrey D. Wolt, Manjit K. Misra 2012 Iowa State University

Morphological Variation In The Wild-Weedy Complex Of Sorghum Bicolor In Situ In Western Kenya: Preliminary Evidence Of Crop-To-Wild Gene Flow?, James A. Okeno, Evans Mutegi, Santie De Villiers, Jeffrey D. Wolt, Manjit K. Misra

Agricultural and Biosystems Engineering Publications

Crop wild relatives are important components of agroecosystems and have over the years been exploited in breeding programs as sources of genes for novel traits. Information on the extent and patterns of variability is important in formulating effective conservation and utilization strategies for existing crop wild relative populations. We conducted surveys and collections of wild and weedy accessions of Sorghum bicolor (L.) Moench in Lambwe Valley in western Kenya in order to investigate occurrence, distribution, and morphological variability in the wild-weedy complex of S. bicolor under local agroecological conditions. We also attempted to understand the role, if any, of crop-to-wild ...


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