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Full-Text Articles in Life Sciences

Short Day Transcriptomic Programming During Induction Of Dormancy In Grapevine, Anne Fennell, Karen A. Schlauch, Satyanarayana Gouthu, Laurent G. Deluc, Vedbar Khadka, Lekha Sreekantan, Jerome Grimplet, Grant C. Cramer, Katherine L. Mathiason Nov 2015

Short Day Transcriptomic Programming During Induction Of Dormancy In Grapevine, Anne Fennell, Karen A. Schlauch, Satyanarayana Gouthu, Laurent G. Deluc, Vedbar Khadka, Lekha Sreekantan, Jerome Grimplet, Grant C. Cramer, Katherine L. Mathiason

Agronomy, Horticulture and Plant Science Faculty Publications

Bud dormancy in grapevine is an adaptive strategy for the survival of drought, high and low temperatures and freeze dehydration stress that limit the range of cultivar adaptation. Therefore, development of a comprehensive understanding of the biological mechanisms involved in bud dormancy is needed to promote advances in selection and breeding, and to develop improved cultural practices for existing grape cultivars. The seasonally indeterminate grapevine, which continuously develops compound axillary buds during the growing season, provides an excellent system for dissecting dormancy, because the grapevine does not transition through terminal bud development prior to dormancy. This study used gene expression …


Rnaseq Reveals Weed-Induced Pif3-Like As A Candidate Target To Manipulate Weed Stress Response In Soybean, David P. Horvath, Stephanie A. Bruggeman, Janet Moriles Miller, Ronald Pierik, Chanhui Yan, David E. Clay, Brian Scheffler, Sharon A. Clay Feb 2015

Rnaseq Reveals Weed-Induced Pif3-Like As A Candidate Target To Manipulate Weed Stress Response In Soybean, David P. Horvath, Stephanie A. Bruggeman, Janet Moriles Miller, Ronald Pierik, Chanhui Yan, David E. Clay, Brian Scheffler, Sharon A. Clay

Agronomy, Horticulture and Plant Science Faculty Publications

Research conducted, including the rationale: Weeds reduce yield in soybeans through incompletely defined mechanisms. The effects of weeds on the soybean transcriptome were evaluated in field conditions during four separate growing seasons. Methods: RNASeq data were collected from 6 biological samples of soybeans growing with or without weeds. Weed species and the methods to maintain weed free controls varied between years to mitigate treatment effects and to allow detection of general soybeans weed responses. Key results: Soybean plants were not visibly nutrient or water stressed. We identified 55 consistently down-regulated genes in weedy plots. Many of the down-regulated genes were …


Differential Effects Of Biochar On Soils Within An Eroded Field, Thomas E. Schumacher, Rajesh Chintala, Saroopp Sandhu, Sandeep Kumar, David Clay, Ron Gelderman, Sharon Papiernik, Douglas Malo, Sharon Clay, Jim Julson Jan 2015

Differential Effects Of Biochar On Soils Within An Eroded Field, Thomas E. Schumacher, Rajesh Chintala, Saroopp Sandhu, Sandeep Kumar, David Clay, Ron Gelderman, Sharon Papiernik, Douglas Malo, Sharon Clay, Jim Julson

Agronomy, Horticulture and Plant Science Faculty Publications

Future uses of biochar will in part be dependent not only on the effects of biochar on soil processes but also on the availability and economics of biochar production. If pyrolysis for production of bio-oil and syngas becomes wide-spread, biochar as a by-product of bio-oil production will be widely available and relatively inexpensive compared to the production of biochar as primary product. Biochar produced as a by-product of optimized bio-oil production using regionally available feedstocks was examined for properties and for use as an amendment targeted to contrasting soils within an eroded field in an on-farm study initiated in 2013 …


An Economic Analysis Of High-Intensity, Short-Duration Grazing Systems In South Dakota And Nebraska, Larry Janssen, Bronc Mcmurtry, Matthew Stockton, Alexander Smart, Sharon A. Clay Jan 2015

An Economic Analysis Of High-Intensity, Short-Duration Grazing Systems In South Dakota And Nebraska, Larry Janssen, Bronc Mcmurtry, Matthew Stockton, Alexander Smart, Sharon A. Clay

Agronomy, Horticulture and Plant Science Faculty Publications

Four different grazing systems: two rotational systems, a continuous grazing system, and a modified high-intensity, short-duration (mob) system were evaluated from an economic return and risk perspective. Stocking rates and average daily gains (ADG) were obtained from 2011 – 2014 from university ranch experiments in northern Nebraska. Simulation models were used to examine net returns and risk in each system and rank systems according to risk preferences. A twice through rotational grazing system was most profitable. Mob grazing was the least preferred, although when risk aversion increased, it rose in preference. Mob grazing could be profitable if adjustments increased animal …