Browsing by Author "Bordas, Adria"
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- Best Management Practices for Boxwood Blight for Greenery ProducersDart, Norm; Hong, Chuanxue; Bordas, Adria; Bush, Elizabeth A.; Hansen, Mary Ann; Likins, T. Michael (Virginia Cooperative Extension, 2014-11-03)Best management practices for boxwood blight (also called “box blight”) for greenery producers are practices recommended to avoid the introduction and spread of boxwood blight, caused by the fungus Calonectria pseudonaviculata. The recommendations in this document are designed to avoid spread of boxwood blight within a planting or to new locations when pruned tips are collected, sold and/or used for holiday greenery.
- Best Management Practices for Boxwood Blight for Professionally Managed Landscapes and Public and Historic Gardens in VirginiaBordas, Adria; Likins, T. Michael; Bush, Elizabeth A.; Dart, Norm; Hansen, Mary Ann; Hong, Chuanxue (Virginia Cooperative Extension, 2014-12-19)Boxwood blight is caused by the fungal pathogen Calonectria pseudonaviculata(syn. Cylindrocladium buxicola). This document outlines best management practices for landscapers and property managers to reduce the risk of spreading boxwood blight to landscapes and public and historic gardens, and to manage the disease if it is introduced.
- Best Management Practices for Boxwood Blight in the Virginia Home LandscapeBush, Elizabeth A.; Hansen, Mary Ann; Dart, Norm; Hong, Chuanxue; Bordas, Adria; Linkins, T. Mike (Virginia Cooperative Extension, 2016-09)Provides a set of guidelines for home growers of landscape boxwood to avoid introduction of the boxwood blight pathogen into a landscape or, if the disease is already present in a landscape, to manage the disease in the most effective manner and avoid the spread of the disease to new locations.
- Best Management Practices for Boxwood Blight in the Virginia Home LandscapeBush, Elizabeth A.; Hansen, Mary Ann; Dart, Norm; Hong, Chuanxue; Bordas, Adria; Linkins, T. Mike (Virginia Cooperative Extension, 2005-09-14)Provides a set of guidelines for home growers of landscape boxwood to avoid introduction of the boxwood blight pathogen into a landscape or, if the disease is already present in a landscape, to manage the disease in the most effective manner and avoid spread of the disease to new locations.
- Best Management Practices for Boxwood Blight in Virginia Production Nurseries WITH Boxwood BlightDart, Norm; Hong, Chuanxue; Bordas, Adria; Bush, Elizabeth A.; Hansen, Mary Ann; Linkins, T. Mike (Virginia Cooperative Extension, 2014-07-15)Provides a set of guidelines for production nurseries with boxwood blight to contain and manage the disease in the most effective manner and avoid the spread of the disease to new locations.
- Best Management Practices for Boxwood Blight in Virginia Production Nurseries WITHOUT Boxwood BlightDart, Norm; Hong, Chuanxue; Bordas, Adria; Bush, Elizabeth A.; Hansen, Mary Ann; Linkins, T. Mike (Virginia Cooperative Extension, 2014-06-25)Provides a set of guidelines for production nurseries without boxwood blight to avoid introduction of the boxwood blight pathogen into the landscape.
- Best Management Practices for Boxwood Blight: Best management practices for boxwood blight in Virginia production nurseries with boxwood blightDart, Norm; Hong, Chuanxue; Bordas, Adria; Bush, Elizabeth A.; Hansen, Mary Ann; Likins, T. Michael (Virginia Cooperative Extension, 2014-07-15)This Best Management Practice document is a set of guidelines for home growers of landscape boxwood to avoid introduction of the boxwood blight pathogen into a landscape or, if the disease is already present in a landscape, to manage the disease in the most effective manner and avoid spread of the disease to new locations.
- Best Management Practices for Virginia Retail Nurseries WITH Boxwood BlightDart, Norm; Hong, Chuanxue; Bordas, Adria; Bush, Elizabeth A.; Hansen, Mary Ann; Linkins, T. Mike (Virginia Cooperative Extension, 2006-05-14)Provides a set of guidelines for retail nurseries with boxwood blight to contain and manage the disease in the most effective manner and avoid the spread of the disease to new locations.
- Best Management Practices for Virginia Retail Nurseries WITHOUT Boxwood BlightDart, Norm; Hong, Chuanxue; Bordas, Adria; Bush, Elizabeth A.; Hansen, Mary Ann; Linkins, T. Mike (Virginia Cooperative Extension, 2006-06-14)Provides a set of guidelines for retail nurseries without boxwood blight to avoid introduction of the boxwood blight pathogen into the landscape.
- Differential Tolerance to Calonectria pseudonaviculata of English Boxwood Plants Associated with the Complexity of Culturable Fungal and Bacterial Endophyte CommunitiesKong, Ping; Sharifi, Melissa; Bordas, Adria; Hong, Chuanxue (MDPI, 2021-10-21)Isolated boxwood endophytes have been demonstrated to effectively protect boxwood plants from infection by Calonectria pseudonaviculata (Cps). However, the roles of endophytes as communities in plant defense are not clear. Here, we demonstrated differential tolerance to Cps of English boxwood (Buxus sempervirens ‘Suffruticosa’), an iconic landscape plant and generally regarded as highly susceptible, and its link to endophyte complexity. Fifteen boxwood twig samples were collected in triplicates from three historic gardens—Colonial Williamsburg, George Washington’s Mount Vernon and River Farm, and Virginia Tech’s research farm in Virginia Beach in the summer and fall of 2019. A portion of individual samples was inoculated with Cps under controlled conditions. Significant differences in disease severity were observed among samples but not between the two seasons. Examining the endophyte cultures of the summer samples revealed that bacterial and fungal abundance was negatively and positively correlated with the disease severity. Nanopore metagenomics analysis on genomic DNA of the tolerant and susceptible group representatives confirmed the associations. Specifically, tolerant English boxwood plants had an endophyte community dominated by Bacilli and Betaproteobacteria, while susceptible ones had a distinct endophyte community dominated by Gammaproteobacteria, Actinobacteria, and diverse fungi. These findings may lead to boxwood health management innovations—devising and utilizing cultural practices to manipulate and increase the abundance and performance of beneficial endophytes for enhanced boxwood resistance to Cps.
- Emerald Ash Borer for Foresters and LandownersDay, Eric R.; Salom, Scott M.; Fisher, K. Jason; Martin, Debra; Bordas, Adria (Virginia Cooperative Extension, 2014-09-04)Discusses the Emerald Ash Borer, its life history, and means of control, including biological methods, and restriction of the movement of infested firewood.
- Leaf Endophyte Community Composition and Network Structures Differ Between Tolerant and Susceptible English BoxwoodKong, Ping; Li, Xiaoping; Sharifi, Melissa; Bordas, Adria; Hong, Chuanxue (American Phytopathological Society, 2023-09)Differential tolerance of English boxwood to boxwood blight has been linked to the ratio of culturable bacterial and fungal dominance in the leaf tissue of representative samples. To further understand how the whole endophyte communities may involve the tolerance of large samples, we extracted DNA from healthy leaf tissue of previously identified 28 tolerant (T), 41 moderately tolerant (M), and 21 susceptible (S) English boxwood plants, then sequenced associated bacterial and fungal amplicons using the Nanopore MinION platform. The endophyte community did not differ in diversity among the T, M, and S plants but differed in the abundance of bacteria and fungi, particularly between T and S samples. The bacterial genera Brevundimonas and Ammonifex had higher relative abundance in the T and M communities than in the S community, in which the fungal genera Botrytis and Thermothelomyces and family Chaetomiaceae were more dominant. The same results were obtained when mother and daughter samples in the T community were compared with controls in the S community, suggesting bacteria as a work force in the T community. Cooccurrence network analyses revealed that the T network had more fungal hubs but was less complex, with more positive connections than the S network, suggesting that the T community was supported by a healthier network. The resistance of English boxwood to blight is likely attributed to bacteria dominance and a synergic community network. This study is foundational to constructing synthetic communities and using whole communities of tolerant plants through vegetative propagation for microbemodulated immunity.
- Procrastinators Commercial Pesticide Applicators RecertificationBordas, Adria (2016-06-17)Round Robin Presentation: Powdery Mildew vs. Downy Mildew
- What in the World? International Produce Takes a Stand at Virginia Farmers MarketsLynn, Brenda; Bordas, Adria; Brown, Cynthia; Close, David; Olney, Nancy; Rafie, Carlin; Smith, Pamela; Strawn, Laura K.; Strong, Kathryn (Virginia Cooperative Extension, 2016-05-25)Discusses farmers markets and the kinds of food crops sold at these markets. Notes a recent trend of more international specialty vegetables becoming available at these venues.