Time filter

Source Type

Murfreesboro, NC, United States

Chowan /tʃoʊˈwɔːn/ University is a small private university of about 1200 students located in Murfreesboro, North Carolina, United States. The school is affiliated with the Baptist State Convention of North Carolina, though it accepts students of all backgrounds. It is the second-oldest Baptist school in North Carolina. The University offers both Associate's and Bachelor's degrees in 40 academic disciplines and is accredited by the Southern Association of Colleges and Schools. Wikipedia.

Day F.P.,Old Dominion University | Schroeder R.E.,Old Dominion University | Stover D.B.,U.S. Department of Energy | Brown A.L.P.,Old Dominion University | And 8 more authors.
New Phytologist | Year: 2013

Uncertainty surrounds belowground plant responses to rising atmospheric CO2 because roots are difficult to measure, requiring frequent monitoring as a result of fine root dynamics and long-term monitoring as a result of sensitivity to resource availability. We report belowground plant responses of a scrub-oak ecosystem in Florida exposed to 11 yr of elevated atmospheric CO2 using open-top chambers. We measured fine root production, turnover and biomass using minirhizotrons, coarse root biomass using ground-penetrating radar and total root biomass using soil cores. Total root biomass was greater in elevated than in ambient plots, and the absolute difference was larger than the difference aboveground. Fine root biomass fluctuated by more than a factor of two, with no unidirectional temporal trend, whereas leaf biomass accumulated monotonically. Strong increases in fine root biomass with elevated CO2 occurred after fire and hurricane disturbance. Leaf biomass also exhibited stronger responses following hurricanes. Responses after fire and hurricanes suggest that disturbance promotes the growth responses of plants to elevated CO2. Increased resource availability associated with disturbance (nutrients, water, space) may facilitate greater responses of roots to elevated CO2. The disappearance of responses in fine roots suggests limits on the capacity of root systems to respond to CO2 enrichment. © 2013 The Authors. © 2013 New Phytologist Trust. Source

Cho S.K.,Iowa State University | Kang I.-H.,DuPont Company | Carr T.,Chowan University | Hannapel D.J.,Iowa State University
Frontiers in Plant Science | Year: 2012

Heterografting and RNA transport experiments have demonstrated the long-distance mobility of StBEL5 RNA, its role in controlling tuber formation, and the function of the 503-nt 3′ untranslated region (UTR) of the RNA in mediating transport. Because the 3′ UTR of StBEL5 is a key element in regulating several aspects of RNA metabolism, a potato leaf cDNA library was screened using the 3′ UTR of StBEL5 as bait in the yeast three-hybrid (Y3H) system to identify putative partner RNA-binding proteins (RBPs). From this screen, 116 positive cDNA clones were isolated based on nutrient selection, HIS3 activation, and lacZ induction and were sequenced and classified. Thirty-five proteins that were predicted to function in either RNA- or DNA-binding were selected from this pool. Seven were monitored for their expression profiles and further evaluated for their capacity to bind to the 3′ UTR of StBEL5 using β-galactosidase assays in the Y3H system and RNA gel-shift assays. Among the final selections were two RBPs, a zinc finger protein, and one protein, StLSH10, from a family involved in light signaling. In this study, the Y3H system is presented as a valuable tool to screen and verify interactions between target RNAs and putative RBPs. These results can shed light on the dynamics and composition of plant RNA-protein complexes that function to regulate RNA metabolism. © 2012 Cho, Kang, Carr and Hannapel. Source

Wethington A.R.,Chowan University | Kirkland D.L.,University of Alabama | Dillon Jr. R.T.,College of Charleston
American Malacological Bulletin | Year: 2012

Previously-published mate-choice experiments have uncovered significant prezygotic reproductive isolation between South Carolina populations of Physa acuta (Draparnaud, 1805) and P. pomilia (Conrad, 1834). Here we report the results of similar tests returning no evidence of such barriers between an Alabama population of P. pomilia and three separate populations of P. acuta, two from Alabama and one from South Carolina. However, heterogametic copulations did demonstrate both a significant sex bias and a significant size bias. The smaller P. acuta was more likely to copulate in the male role and hence less exposed to any potential fitness decrements due to the reduced viability and sterility of the hybrids produced. Our observations on defeated mating attempts suggested that P. acuta may be more aggressive than Alabama P. pomilia in mating contests (its smaller size perhaps contributing to greater agility) and hence more likely to prevail in the male role. The absence of a sex bias in our previously-published mate-choice observations involving South Carolina P. pomilia and P. acuta may be attributable to our use of size-matched snails, which equalized the agility of the prospective copulants, thus perhaps prolonging the mating contests, and ultimately lessening the likelihood that any mating took place at all. Source

Doane A.N.,Chowan University | Pearson M.R.,University of New Mexico | Kelley M.L.,Old Dominion University
Computers in Human Behavior | Year: 2014

The present study tested the Theory of Reasoned Action (TRA) as an explanation for cyberbullying perpetration among 375 (128 male, 246 female) college students. Empathy toward cyberbullying victims was also included in the models. Participants completed the cyberbullying perpetration scale of the Cyberbullying Experiences Survey (Doane, Kelley, Chiang, & Padilla, 2013) that assesses four types of cyberbullying (deception, malice, public humiliation, and unwanted contact). Across all four models, results showed that lower empathy toward cyberbullying victims predicted more favorable attitudes toward cyberbullying perpetration, more favorable attitudes toward cyberbullying predicted higher intentions to cyberbully, and higher cyberbullying intentions predicted more frequent perpetration of cyberbullying behaviors. Injunctive norms regarding cyberbullying (e.g., perception of peers' approval of cyberbullying perpetration) predicted intentions to engage in malice and unwanted contact behaviors. The results demonstrate that the TRA is a useful framework for understanding cyberbullying perpetration. © 2014 Elsevier Ltd. All rights reserved. Source

Doane A.N.,Chowan University | Boothe L.G.,University of Virginia | Pearson M.R.,University of New Mexico | Kelley M.L.,Old Dominion University
Computers in Human Behavior | Year: 2016

The present study tested Protection Motivation Theory (PMT) as an explanation of electronic communication safe behavioral intentions and behaviors and cyberbullying victimization. We recruited 577 college students who completed a battery of surveys examining PMT-based constructs and cyberbullying victimization. We found that higher perceived susceptibility to cyberbullying victimization was associated with lower electronic communication safe behavioral intentions, higher electronic communication risky behaviors, and higher cyberbullying victimization. In addition, higher perceived severity of cyberbullying victimization was associated with higher electronic communication safe behavioral intentions and lower cyberbullying victimization. Furthermore, higher response efficacy and self-efficacy regarding electronic communication safe behaviors were predictive of higher electronic communication safe behavioral intentions. The PMT-based model accounted for over 30% of the variability in cyberbullying victimization. PMT constructs may be promising targets for interventions designed to decrease the incidence of cyberbullying victimization. © 2016 Elsevier Ltd. All rights reserved. Source

Discover hidden collaborations