Ghost Forests and Other Terrifying Tales About Trees

In this episode, Dr. Tim Widmer, Plant Pathologist and former USDA ARS scientist and National Program Leader joins host Matt Kasson to discuss his 2025 APS Fellow Award, his career as a federal researcher focused on biological control and emerging pathogens, and his more recent role as USDA ARS program leader. He discusses the challenges that service-minded scientists face in today's changing political and funding landscape, while encouraging those that are able to pursue federal positions to do so help shape the future of agriculture and plant health. Show Notes Dr. Tim Widmer's USDA Under The Microscope Interview: https://www.ars.usda.gov/oc/utm/so-much-depends-upon-a-strong-green-bough-the-vital-importance-of-plant-health/ Dr. Tim Widmer’s ResearchGate profile: https://www.researchgate.net/scientific-contributions/Timothy-L-Widmer-37720758 This episode is produced by Association Briefings (https://associationbriefings.com). Special Guest: Tim Widmer.

In this episode, Dr. Karen Garrett, Preeminent Professor of Plant Pathology at the University of Florida and current APS President joins host Matt Kasson to discuss her research journey and diverse research program on tropical and international agriculture, microbiomes, epidemiology and disease ecology among others. She discusses the various ways APS is supporting and advocating for its members during a time of uncertainty and rapid policy change. She also highlights some of the exciting workshops and speakers for Plant Health 2025. Show Notes Dr. Karen Garrett’s University of Florida Faculty Profile: https://plantpath.ifas.ufl.edu/people/faculty-pages/karen-garrett/ Dr. Karen Garrett’s Lab Webpage: https://www.garrettlab.com/ Dr. Karen Garrett’s Google Scholar profile: https://scholar.google.com/citations?user=8dMWriAAAAAJ&hl=en APS Member Support and Resources​: https://www.apsnet.org/members/engagement/Pages/Support-resources.aspx Aps Plant Health 2025 Webpage: https://www.apsnet.org/meetings/annual/PH2025/Pages/default.aspx This episode is produced by Association Briefings (https://associationbriefings.com). Special Guest: Karen Garrett.

In this episode, Dr. Marisol Quintanilla, Assistant Professor of Nematology in the Department of Entomology at Michigan State University joins host Matt Kasson to discuss her research on plant parasitic nematodes in Michigan’s vegetable, fruit, and field crops. She discusses the various life strategies and management approaches for diverse nematodes threatening U.S. soybean, hops, and sugar beet production among other crops. She also talks about the challenges of engaging with the general public outside of growers and farmers given the cryptic lifestyles of these microscopic roundworms that thrive beneath our feet. Show Notes Dr. Marisol Quintanilla’s Michigan State University Faculty Profile: https://www.canr.msu.edu/people/marisol_quintanilla MSU Extension Fruit and Nuts article featuring entomopathogenic nematodes: https://www.canr.msu.edu/resources/advances-on-the-management-of-the-spotted-wing-drosophila-with-entomopathogenic-nematodes Summary of Dr. Quintanilla’s grant to study Potato Early Dying Disease: https://www.thepacker.com/news/produce-crops/researchers-seek-new-strategies-combat-yield-reducing-potato-disease Dr. Marisol Quintanilla 's Google Scholar profile: https://scholar.google.com/citations?user=a1XCPT8AAAAJ&hl=en This episode is produced by Association Briefings (https://associationbriefings.com). Special Guest: Marisol Quintanilla.

In this episode, Dr. Kranthi Mandadi, Professor of Plant Pathology and Microbiology at Texas A&M AgriLife Research and Extension Center in Weslaco, Texas, joins host Matt Kasson to discuss his basic and translational research of fastidious (unculturable) plant pathogens including the causal agents of citrus greening disease (HLB) and zebra chip disease. He talks about his lab's innovative approaches to combatting plant diseases throughout the southern U.S. and his Texas-sized ambitions to develop solutions through public-private partnerships with industry. He also discusses the challenges of working with obligate unculturable plant pathogens and the need to balance basic science pursuits with high-risk / high-reward research. Show Notes Texas A & M University Plant Pathology and Microbiology Faculty Profile: https://plantpathology.tamu.edu/people/mandadi-kranthi/ Mandadi Lab webpage: https://agrilife.org/mandadilab/group/ 2024 APS Syngenta Award Profile​: https://www.apsnet.org/members/give-awards/awards/Syngenta/Pages/2024-Syngenta_Mandadi.aspx Farm Progress article on Dr. Mandadi: https://www.farmprogress.com/fruit/scientists-shift-from-defense-to-offense-to-fight-citrus-greening Dr. Kranthi Mandadi's Google Scholar profile: https://scholar.google.com/citations?user=rWVhJ94AAAAJ&hl=en ‪ This episode is produced by Association Briefings (https://associationbriefings.com). Special Guest: Kranthi Mandadi.

In this episode, Dr. Lisa Castlebury, Research Mycologist and Leader of the Mycology and Nematology Genetic Diversity and Biology Laboratory with the USDA ARS and Director of the U.S. National Fungus Collections, joins host Matt Kasson to discuss her long career with the U.S.D.A. A.R.S. and her lab’s role in identifying foreign and domestic plant pathogenic fungi and managing over a million accessions housed in the U.S. National Fungus Collections. She also reflects on her early experiences growing up in Illinois and being part of some of the earliest fungal DNA-based studies in the late 1990s and early 2000s. Show notes USDA ARS Mycology and Nematology Genetic Diversity and Biology Laboratory official website: https://www.ars.usda.gov/northeast-area/beltsville-md-barc/beltsville-agricultural-research-center/mycology-and-nematology-genetic-diversity-and-biology-laboratory/ USDA ARS Employee Profile: Lisa Castlebury : USDA ARS (https://www.ars.usda.gov/people-locations/address/?person-id=10294) Dr. Lisa Castlebury’s Google Scholar profile: ‪Lisa A. Castlebury - ‪Google Scholar (https://scholar.google.com/citations?user=iGCZIKsAAAAJ) This episode is produced by Association Briefings (https://associationbriefings.com). Special Guest: Lisa Castlebury.

In this episode, Dr. Ilse Alejandra Huerta Arredondo, Assistant Professor of Agriculture at the Universidad de Guanajuato in Mexico, joins host Matt Kasson to discuss growing up in Mexico and her family ties to agriculture including her great grandfather's and grandfather's friendship with Norman Borlaug. Dr. Huerta Arredondo shares her academic journey in Mexico and in central Pennsylvania where she discovered her love for agricultural extension. She discusses her vision for extension and agricultural education in Mexico. Show notes Dr. Huerta Arredondo's North American Agricultural Advisory Network (NAAAN) Profile here: https://naaan.csusystem.edu/directory/ilse-alejandra-huerta-arredondo/ Historic photo of Dr. Huerta Arredondo's great grandfather Jose Huerta and grandfather Jose Huerta Jr. with Norman Borlaug, John Gibler, John Pitner at Centro de Investigaciones Agricolas del Noreste (CIANO), Sonora in 1950: http://hdl.handle.net/10883/4315 Universidad de Guanajuato Press release on Dr. Huerta Arredondo's participation in the Global Guides Program, a development program for educators organized by the World Food Prize Foundation and Global Teach Ag: https://www.ugto.mx/noticias/noticias/17674-profesora-ug-participara-en-programa-internacional-de-educacion-para-la-seguridad-alimentaria This episode is produced by Association Briefings. Special Guest: Ilse Huerta-Arredondo.

In this episode, Dr. Elena Karlsen-Ayala, Research Plant Pathologist with The USDA Forest Service in Hamden, Connecticut, joins host Matt Kasson to discuss present day threats to U.S. forests and landscapes. Dr. Karlsen-Ayala shares her journey including her return to New England, mycorrhizal fungi, and how to build more resilient landscapes. Show notes Dr. Karlsen-Ayala Profile here: https://research.fs.usda.gov/about/people/elena.karlsen-ayala USDA Forest Service Region 9 page on Zombie trees: https://www.fs.usda.gov/detail/r9/home/?cid=FSEPRD965797 This episode is produced by Association Briefings (https://associationbriefings.com). Special Guest: Elena Karlsen-Ayala.

In this episode, Dr. Jonathan Jacobs, Associate Professor of Emerging Infectious Diseases at The Ohio State University, joins host Matt Kasson from Uruguay where he is currently investigating emerging and ongoing threats to U.S. and Uruguay cereal production. Dr. Jacobs discusses he globe-trotting academic journey studying plant bacterial diseases in France, Belgium, Uruguay, and the U.S.A. along with his philosophy on mentoring, Show notes Dr. Jacobs Ohio State University Faculty Profile here: https://plantpath.osu.edu/our-people/jonathan-m-jacobs Dr. Jacobs OSU Lab page: Emerging infectious disease ecology laboratory | Biology and evolution of plant pathogenic bacteria and food crops (osu.edu) (https://u.osu.edu/doctorjj/) News Release of Dr. Jacobs Fulbright Award: Jacobs awarded Fulbright U.S. Scholar Award to Uruguay | Office of International Affairs (osu.edu) (https://oia.osu.edu/news/jacobs-awarded-fulbright-u-s-scholar-award-to-uruguay) This episode is produced by Association Briefings (https://associationbriefings.com). Special Guest: Jonathan Jacobs.

In this episode, Dr. Terence Mhora, Senior Global R&D Scientist at FMC Agricultural Solutions, joins host Matt Kasson for an insightful discussion on building an interdisciplinary career in plant pathology. Dr. Mhora shares how his upbringing in Zimbabwe sparked his passion for agriculture and led him down this path. The conversation delves into the critical balance between molecular research and fieldwork in plant pathology, the importance of collaboration with specialized labs for federal approvals, and the challenges and opportunities within the industry. They also explore how publications, patents, and networking play pivotal roles in advancing a career in this field. Show notes Plantopia is produced by Association Briefing (https://associationbriefings.com)s. Special Guest: Terence Mhora.

In this episode, Dr. Edel Pérez-López, Associate Professor of Phytopathology at Université Laval, joins host Matt Kasson for an engaging conversation about growing up in Cuba, taking risks and navigating language and cultural barriers in Mexico, the U.S. and Canada, and the challenges of working with understudied obligate parasitic protists and Mollicutes. *Show notes * Université Laval Faculty Profile here: https://www.ibis.ulaval.ca/en/research/research-teams/edel-perez-lopez-en/#1533234462662-d003f18e-51c6 Seed World Feature on Dr. Perez Lopez: https://www.seedworld.com/canada/2024/02/14/redefining-success-edel-perez-lopezs-approach-to-science-and-well-being/ 2024 MPMI article on Protist Effectors: https://apsjournals.apsnet.org/doi/full/10.1094/MPMI-11-23-0196-CR This episode is produced by Association Briefings (https://associationbriefings.com). Special Guest: Edel Perez Lopez.