A5014879352- Plant responses to elevated CO2
- Plant Pathogens and Fungal Diseases
- Lichen and fungal ecology
- Botany and Plant Ecology Studies
- Atmospheric chemistry and aerosols
- Mycorrhizal Fungi and Plant Interactions
- Forest Insect Ecology and Management
- Bryophyte Studies and Records
- Yeasts and Rust Fungi Studies
- Plant Parasitism and Resistance
- Heavy metals in environment
- Turfgrass Adaptation and Management
- Spine and Intervertebral Disc Pathology
- Job Satisfaction and Organizational Behavior
- Plant and animal studies
- Plant-Microbe Interactions and Immunity
- Plant Water Relations and Carbon Dynamics
- Work-Family Balance Challenges
- Plant and Fungal Interactions Research
- Plant Pathogens and Resistance
- Fire effects on ecosystems
- Phytochemical compounds biological activities
- Mercury impact and mitigation studies
- Air Quality and Health Impacts
- Orthopedic Surgery and Rehabilitation
Pennsylvania State University
2014-2024
Swedish Medical Center
2024
ISI Foundation
2024
Swedish Medical Center
2023
Atlanta Medical Center
2018-2021
University of Louisiana at Lafayette
2018
University of Louisiana at Monroe
2016
Old Dominion University
1995-2015
Animal and Plant Health Inspection Service
2015
United States Department of Agriculture
2015
This article describes the challenges that women and of color face in their quest to achieve perform leadership roles work settings. We discuss barriers encounter specifically address dimensions gender race impact on leadership. identify factors associated with evaluations leaders stereotypes other faced by White color. use ideas concerning identity intersection multiple identities understand way which mediates shapes experience workplace. conclude suggestions for research theory development...
Abstract There has been a considerable debate about the individual and organizational benefits of competition. Adopting person–environment fit perspective, this research examined influence competition as an interaction between trait competitiveness competitive climate. Using sample information technology workers, climate was considered both level variable workgroup variable. Results show that effect depended on at which assessed for four outcomes assessed: job satisfaction, commitment,...
Abstract This research tested a multilevel model examining the influence of work‐family culture and supportive workplace relationships on work interference with family. Web‐based survey data were provided by 792 information technology employees from 10 organizations. Random coefficient modeling was used to test path between culture, leader‐member exchange (LMX), coworker support, The direct effects LMX support family significant. indirect effect also Results demonstrate value in...
Conductive heating in the physiological range of sites anterior hypothalamus anesthetized cat caused a fall rectal temperature and inhibition shivering. Excessive also cutaneous vasodilatation, bradycardia transient loss nociceptive reflexes. Cooling at same rise but did not cause shivering or vasoconstriction. Heating posterior was associated with slight temperature, cooling fall. Changes autonomic somatic activity were rarely seen association such cooling. In chronic preparations...
The success of some invasive tree species is attributed, in part, to high fecundity the form sexual propagules. If trees produce more seed annually than co-occurring native trees, they will have a greater ability disperse and establish across landscape. In this study, production female Ailanthus was investigated determine (1) reproductive age limits; (2) annual cumulative output; (3) viability. Existing data on were combined with novel dataset compare variability explore relationships...
Research of nonspecific defense processes in woody plants has focused on xylem. From these studies the concept compartmentalization sensu Shigo was developed. Responses bark to injury and infection, however, are understood poorly. This discussion summarizes evidence for occurrence similar function xylem bark. We suggest that a developmental approach research plant responses infection could result conceptual unity regarding structural functional changes both
Extensive, unprecedented wilt and mortality of the highly invasive tree-of-heaven (Ailanthus altissima) occurred recently within mixed-hardwood forests in south-central Pennsylvania. Until this study, cause epidemic was unknown. Verticillium albo-atrum consistently isolated from symptomatic Ailanthus seedlings trees areas having high levels mortality, whereas V. dahliae small scattered patches diseased Ailanthus. Inoculations potted greenhouse, as well canopy field, revealed that both were...
Ailanthus altissima (Tree of Heaven), an invasive tree species native to China and East Asia, was first introduced into the US ca. 1784 by William Hamilton at his Philadelphia, PA estate. However, means temporal progression spread from this other early points introduction are not clear. This now occurs in >40 states, primarily as urban roadside weed. The Northeast supports highest densities within US, mainly transportation corridors areas, where it has become dominant species. A recent,...
Verticillium wilt, caused by nonalfalfae, is currently killing tens of thousands highly invasive Ailanthus altissima trees within the forests in Pennsylvania, Ohio, and Virginia being considered as a biological control agent Ailanthus. However, little known about pathogenicity virulence V. nonalfalfae isolates from other hosts on Ailanthus, or genetic diversity among confirmed wilt epicenters locations not associated with wilt. Here, we compared several alfalfae isolates, evaluated efficacy...
The naturally occurring Verticillium nonalfalfae has been proposed as a biocontrol agent against the highly invasive Ailanthus altissima in eastern United States. We tested 71 nontarget woody species for susceptibility to potential agent. In field, only devil's walkingstick (17% incidence) and striped maple (3%) acquired infections through natural spread from infected A. (100%). Staghorn sumac (16% also exhibited wilt close proximity diseased Ailanthus, although V. was never recovered. Stem...
Studies were performed to determine the injury and growth response of four native tree species ambient ozone on ridgetop sites Allegheny Plateau north central Pennsylvania. Open-top chambers established at each three located in Clear Creek State Park, Jefferson County (41°9′39″N, 79°02′35″W), Elliott Clearfield (41°07′02″N, 78°31′40″W), Tiadaghton, Lycoming (41°20′05″N, 77°26′57″W). Seedlings black cherry (Prunusserotina Ehrh.), yellow-poplar (Liriodendrontulipifera L.), red oak...
Abstract Focus groups with information technology (IT) professionals and interviews high‐performing IT supervisors were content‐analyzed to discover best supervisory practices.The focus is on how these practices address challenges commonly confronted in the work environment. Consistent classic leadership theory, fell into two major categories: task‐focused (boundary spanning, performance management, employee involvement, training development) person‐focused (relationship building, mentoring,...
Verticillium wilt of the highly invasive tree-of-heaven [Ailanthus altissima (Mill.) Swingle], caused by nonalfalfae Interbitzin et al. (1), formerly classified as V. albo-atrum Reinke and Berthold, has been reported in United States from two states: Pennsylvania (2) Virginia (3). Infected A. both states exhibited similar symptoms wilt, premature defoliation, terminal dieback, yellow vascular discoloration, mortality. In June 2012, second author observed dead dying trees southern Ohio (Pike...
Cuttings of poplar hybrid NE-388 (P. maximowiczii Henry × trichocarpa Torr. & Gray) were inoculated with mycelium Cytospora chrysosperma (Pers.) Fr. Bark samples for histological study taken at varying times after inoculation from slowly enlarging cankers, blackstem, control wounds, and uninoculated healthy plants. Histological examination revealed that cankers are characterized by hyphae in the xylem necrosis cambium ahead visible bark symptoms, large- small-diameter both between within...
Verticillium albo-atrum causes unprecedented wilt and mortality of the invasive tree-of-heaven (Ailanthus altissima) within forests south-central Pennsylvania. Stem inoculation potted Ailanthus seedlings in greenhouse canopy trees field with V. resulted 100% mortality. understory striped maple saplings also However, high susceptibility was not observed naturally infected stands, where only 1% exhibited wilt. Inoculation chestnut oak, northern red maple, sugar white ash, yellow-poplar or did...