Carolee Bull

Director of the Microbiome Center; Professor of Plant Pathology; Bacterial Systematics Head, Department of Plant Pathology and Environmental Microbiology

Carolee Bull

Research Summary

Bacterial systematics, epidemiology, and population biology of bacterial plant pathogens and biological control agents to develop alternatives to synthetic chemicals for plant disease management

Huck Affiliations


Publication Tags

Genome Pseudomonas Genes Pathogens Lettuce Leaf Spot Xanthomonas Genomics Xanthomonas Campestris Xanthomonas Campestris Pv. Vitians Bacteria Taxonomy Phylogeny Pathovars Bacteriophages Epidemiology Plant Pathogenic Bacteria Mushrooms Pseudomonas Syringae Nucleotides Virulence Cultivars Genetic Variation Methodology Sequence Analysis

Most Recent Papers

Lettuce Bacterial Leaf Spot

M Gorgo-Gourovitch, Emma Rosenthal, Carolee Bull, 2021,

Bacterial Leaf Spot of Cucurbits, Beets, and Swiss Chard

Raymond Garcia Rodriguez, B Gugino, Carolee Bull, 2021,

Species of dickeya and pectobacterium isolated during an outbreak of blackleg and soft rot of potato in northeastern and north central united states

Rebecca D. Curland, Amanda Mainello, Keith L. Perry, Jianjun Hao, Amy O. Charkowski, Carolee T. Bull, Ryan R. McNally, Steven B. Johnson, Noah Rosenzweig, Gary A. Secor, Robert P. Larkin, Beth K. Gugino, Carol A. Ishimaru, 2021, Microorganisms

Clarifying the taxonomy of the causal agent of bacterial leaf spot of lettuce through a polyphasic approach reveals that Xanthomonas cynarae Trébaol et al. 2000 emend. Timilsina et al. 2019 is a later heterotypic synonym of Xanthomonas hortorum Vauterin et al. 1995

Lucas Morinière, Alexandre Burlet, Emma R. Rosenthal, Xavier Nesme, Perrine Portier, Carolee T. Bull, Céline Lavire, Marion Fischer-Le Saux, Franck Bertolla, 2020, Systematic and Applied Microbiology

Transfer of Xanthomonas campestris pv. arecae and X. campestris pv. musacearum to X. vasicola (Vauterin) as X. vasicola pv. arecae comb. nov. And X. vasicola pv. musacearum comb. nov. And description of X. vasicola pv. vasculorum pv. nov.

David J. Studholme, Emmanuel Wicker, Sadik Muzemil Abrare, Andrew Aspin, Adam Bogdanove, Kirk Broders, Zoe Dubrow, Murray Grant, Jeffrey B. Jones, Georgina Karamura, Jillian Lang, Jan Leach, George Mahuku, Gloria Valentine Nakato, Teresa Coutinho, Julian Smith, Carolee T. Bull, 2020, Phytopathology on p. 1153-1160

Bacterial brown pit, a new disease of edible mushrooms caused by mycetocola sp.

Mozhde Hamidizade, S. Mohsen Taghavi, Samuel J. Martins, Rachel A. Herschlag, Kevin L. Hockett, Carolee T. Bull, Ebrahim Osdaghi, 2020, Plant Disease on p. 1445-1454

Identification of Pseudomonas Isolates Associated With Bacterial Canker of Stone Fruit Trees in the Western Cape, South Africa

Khumbuzile N. Bophela, Yolanda Petersen, T. Bull Carolee, A. Coutinho Teresa, 2020, Plant Disease on p. 882-892

Comparing approaches for capturing bacterial assemblages associated with symptomatic (Bacterial Blotch) and asymptomatic mushroom (Agaricus bisporus) caps

Samuel J. Martins, Ryan V. Trexler, Fabricio R. Vieira, John A. Pecchia, Prem P. Kandel, Kevin L. Hockett, Terrence H. Bell, Carolee T. Bull, 2020, Phytobiomes Journal on p. 90-99

Comparing approaches for capturing bacterial assemblages associated with symptomatic (bacterial blotch) and asymptomatic mushroom (Agaricus bisporus) caps

Samuel Martins, Ryan Trexler, Fabricio Vieira, John Pecchia, Prem Kandel, Kevin Hockett, Terrence Bell, Carolee Bull, 2020, Phytobiomes Journal on p. 90-99

The emergence of microbiome centres

Jennifer B.H. Martiny, Katrine L. Whiteson, Brendan J.M. Bohannan, Lawrence A. David, Nicole A. Hynson, Margaret McFall-Ngai, John F. Rawls, Thomas M. Schmidt, Zaid Abdo, Martin J. Blaser, Seth Bordenstein, Christian Bréchot, Carolee T. Bull, Pieter Dorrestein, Jonathan A. Eisen, Ferran Garcia-Pichel, Jack Gilbert, Kirsten S. Hofmockel, Mary L. Holtz, Rob Knight, David B. Mark Welch, Daniel McDonald, Barbara Methé, Nigel J. Mouncey, Noel T. Mueller, Catherine A. Pfister, Lita Proctor, Joel L. Sachs, 2020, Nature Microbiology on p. 2-3

Most-Cited Papers

Genome-based evolutionary history of Pseudomonas spp

Cedar Hesse, Frederik Schulz, Carolee T. Bull, Brenda T. Shaffer, Qing Yan, Nicole Shapiro, Karl A. Hassan, Neha Varghese, Liam D.H. Elbourne, Ian T. Paulsen, Nikos Kyrpides, Tanja Woyke, Joyce E. Loper, 2018, Environmental Microbiology on p. 2142-2159

Practical Benefits of Knowing the Enemy

Carolee Theresa Bull, Steven T. Koike, 2015, Annual Review of Phytopathology on p. 157-180

Development of an engineered bioluminescent reporter phage for detection of bacterial blight of crucifers

David A. Schofield, Carolee T. Bull, Isael Rubio, W. Patrick Wechter, Caroline Westwater, Ian J. Molineux, 2012, Applied and Environmental Microbiology on p. 3592-3598

Comparative Genomics of Multiple Strains of Pseudomonas cannabina pv. alisalensis, a Potential Model Pathogen of Both Monocots and Dicots

Panagiotis F. Sarris, Emmanouil A. Trantas, David A. Baltrus, Carolee T. Bull, William Patrick Wechter, Shuangchun Yan, Filippos Ververidis, Nalvo F. Almeida, Corbin D. Jones, Jeffery L. Dangl, Nickolas J. Panopoulos, Boris A. Vinatzer, Dimitrios E. Goumas, 2013, PLoS One

List of new names of plant pathogenic bacteria (2011-2012)

C. T. Bull, T. A. Coutinho, T. P. Denny, G. Firrao, M. Fischer-Le Saux, X. Li, G. S. Saddler, M. Scortichini, D. E. Stead, Y. Takikawa, 2014, Journal of Plant Pathology on p. 223-226

Angular leaf spot of cucurbits is associated with genetically diverse pseudomonas syringae strains

E. A. Newberry, T. M. Jardini, I. Rubio, P. D. Roberts, B. Babu, S. T. Koike, H. Bouzar, E. M. Goss, J. B. Jones, C. T. Bull, M. L. Paret, 2016, Plant Disease on p. 1397-1404

Characterization and performance of 16 new inbred lines of lettuce

Ivan Simko, Ryan J. Hayes, Carolee T. Bull, Beiquan Mou, Yaguang Luo, Mark A. Trent, Amy J. Atallah, Edward J. Ryder, Rebecca G. Sideman, 2014, Hortscience: A Publication of the American Society for Hortcultural Science on p. 679-687

The inheritance of resistance to bacterial leaf spot of lettuce caused by Xanthomonas campestris pv. Vitians in three lettuce cultivars

Ryan J. Hayes, Mark A. Trent, Maria Jose Truco, Rudie Antonise, Richard W. Michelmore, Carolee T. Bull, 2014, Horticulture Research

Genetic diversity and virulence of wheat and barley strains of xanthomonas translucens from the upper midwestern United States

Rebecca D. Curland, Liangliang Gao, Carolee T. Bull, Boris A. Vinatzer, Ruth Dill-Macky, Leon Van Eck, Carol A. Ishimaru, 2018, Phytopathology on p. 443-453

Baby leaf lettuce germplasm enhancement

Ryan J. Hayes, Mark A. Trent, Beiquan Mou, Ivan Simko, Samantha J. Gebben, Carolee T. Bull, 2014, Hortscience: A Publication of the American Society for Hortcultural Science on p. 18-24

News Articles Featuring Carolee Bull

Bull elected fellow of American Phytopathological Society

Carolee Bull, professor of systematic bacteriology and plant pathology in Penn State's College of Agricultural Sciences, has been elected as a fellow of the American Phytopathological Society, an honor given to members in recognition of distinguished contributions to the discipline of plant pathology.

Penn State Microbiome Center and GALT enter collaboration to advance research

The Penn State Microbiome Center and General Automation Lab Technologies (GALT) announced their collaboration to advance plant pathology, environmental microbiology and human gut microbiome studies.

Mysterious Chinese seed packets are showing up all over the US, and the government is warning people not to plant them

Dozens of US states have reported mysterious seeds showing up in packages from China and are warning citizens not to plant them because they could be an invasive species.

Agriculture officials issue warning on seed packages from China

Agriculture officials in Georgia and at least 12 other states issued warnings Monday about unsolicited seed packages arriving from China that may be an invasive plant species and harmful to livestock, according to reports.

27 States Issue Warnings About Seed Packets From China

State agriculture officials are urging residents not to plant the seeds, which were mailed in pouches featuring Chinese characters.

How to manage plant pests and diseases in your coronavirus victory garden

Home gardening is having a boom year across the United States. Whether they’re growing their own food in response to pandemic shortages or just looking for a diversion, numerous aspiring gardeners have constructed their first raised beds, and seeds are flying off suppliers’ shelves. Now that gardens are largely planted, much of the work for the next several months revolves around keeping them healthy.

How to manage plant pests and diseases in your victory garden

Home gardening is having a boom year across the US, whether because of pandemic shortages or people wanting a diversion. Now that gardens are largely planted, much of the work for the next several months revolves around keeping them healthy.

Growth of Microbiome Centers Noted In Nature Microbiology.

Penn State has committed to hiring almost two dozen new faculty members to study the microbiome since the creation of its own center.

The Emergence of Microbiome Centres

As microbiome science expands, academic centres scramble to fill many needs, from service provider to industry liaison. A newly created network aims to share strategies and accelerate knowledge transfer, and invites others to join the efforts.

Plant pathologist awarded grant to aid global study of seedborne pathogens

A nearly $4 million grant awarded to Penn State will support an interdisciplinary, multi-university team of researchers as they explore bacterial pathogens causing leaf spot diseases that are damaging valuable agricultural crops such as watermelon and pumpkin.