This will be both in-person and Zoom seminar. Ali will speak at 4:10 p.m., Wednesday, April 20 in 122 Briggs Hall. The Zoom link is https://ucdavis.zoom.us/j/
"The talk will broadly be on the behavior and chemical ecology of multi-trophic interactions," Ali says. "This includes plant responses to herbivory, nematode and insect chemical ecology, in agricultural and conservation contexts. Research projects include trophic cascades associated with cover crops, above-below-ground interactions, and the consequences of diet on insect dispersal."
His lab website delves into multi-trophic interactions and chemical ecology.
Ali served as a postdoctoral fellow at Cornell University (2011-2013) in ecology and evolutionary biology before joining Penn State faculty in the spring of 2016. He holds a bachelor's degree in biological sciences (2005) and a master's degree in entomology (2008) from the University of Delaware; and a doctorate in entomology (2011) from the University of Florida.
Ali's most recent publications include:
- Cover Crop Selection Affects Maize Susceptibility to the Fungal Pathogen Fusarium verticillioides, published in Trends in Plant Science.
- Plant Nutrition Influences Resistant Maize Defense Responses to the Fall Armyworm (Spodoptera frugiperda), published in Frontiers in Ecology and Evolution.
- Transcriptomic and Volatile Signatures Associated with Maize Defense against Corn Leaf Aphid, published in BMC Plant Biology.
- Chemical Cues from Entomopathogenic Nematodes Vary Across Three Species with Different Foraging Strategies, Triggering Different Behavioral Responses in Prey and Competitors, published in the Journal of Chemical Ecology.
- Cover Crop Soil Legacies Alter Phytochemistry and Resistance to Fall Armyworm (Lepidoptera: Noctuidae) in Maize, published in Environmental Entomology.
- Herbivore-Induced Plant Volatiles Mediate Behavioral Interactions Between a Leaf-Chewing and a Phloem-Feeding Herbivore, published in Basic and Applied Ecology.
Nematologist Shahid Siddique, assistant professor, UC Davis Department of Entomology and Nematology, is coordinating the spring seminars. For Zoom technical issues, contact him at firstname.lastname@example.org.
The Multistate Research Fund supports agricultural innovation and sustainability by providing federal funds to collaborative research projects led by State Agricultural Experiment Stations and land-grant universities. These projects bring together scientists, Extension educators, and other university, federal, and industry partners to tackle high-priority regional or national issues in agriculture, a spokesman said.
Under the category, “Researchers studied chemical cues that mediate interactions among plants, pests, and predators,” UC Davis (Karban) is credited with identifying “the sagebrush cues that trigger resistance against chewing herbivores” and also finding that “plant cue effectiveness is affected by the geographic proximity of the source of the cue.”
Under the category, “Researchers used chemical ecology to protect pollinators from pesticides and disease,” UC Davis (Vannette) is credited with identifying “floral chemistry traits and microbial communities that affect the patterns or preferences of hummingbirds, honey bees, and carpenter bees.”
Professor Karban, an international authority on plant communication, is the author of the landmark book, Plant Sensing and Communication (University of Chicago Press).
Karban has researched plant communication in sagebrush (Artemisia tridentata) on the east side of the Sierra since 1995. His groundbreaking research on plant communication among kin, published in February 2013 in the Proceedings of the Royal Society B: Biological Sciences, drew international attention. In that study, Karban and his co-researchers found that kin have distinct advantages when it comes to plant communication, just as “the ability of many animals to recognize kin has allowed them to evolve diverse cooperative behaviors.”
Karban is a fellow of Ecological Society of America and the American Association for the Advancement of Science (AAAS). Michael Pollan featured him in the Dec. 23-30, 2013 edition of The New Yorker: “The Intelligent Plant: Scientists Debate a New Way of Understanding Plants."
Vannette, an assistant professor who joined the UC Davis Department of Entomology and Nematology in 2015 after serving as a postdoctoral fellow at Stanford University's biology department, seeks to unlock the mysteries of flower microbes: how do plants protect against them, and can bees benefit from them?
The Vannette lab is a team of entomologists, microbiologists, chemical ecologists, and community ecologists trying to understand how microbial communities affect plants and insects (sometimes other organisms too). “We often study microbial communities in flowers, on insects or in soil,” according to her website. “We rely on natural history observations, and use techniques from chemical ecology, microbial ecology and community ecology. In some cases, we study applied problems with an immediate application including pathogen control or how to support pollinators. Other questions may not have an immediate application but are nonetheless grounded in theory and will contribute to basic knowledge and conservation (e.g. how can dispersal differences among organisms affect patterns of abundance or biodiversity?).
All plants are colonized by microorganisms that influence plant traits and interactions with other species, including insects that consume or pollinate plants, Vannette explains. “I am interested in the basic and applied aspects of microbial contributions to the interaction between plants and insects. I also use these systems to answer basic ecological questions, such as what mechanisms influence plant biodiversity and trait evolution.”
“Much of the work in my lab focuses on how microorganisms affect plant defense against herbivores and plant attraction to pollinators. For example, we are interested in understanding the microbial drivers of soil health, which can influence plant attractiveness to herbivores and the plant's ability to tolerate or defend against damage by herbivores. In addition, we are working to examine how microorganisms modify flower attractiveness to pollinators. This may have relevance in agricultural systems to improve plant and pollinator health.”
Vannette, who holds a doctorate in ecology and evolutionary biology (2011) from the University of Michigan, was selected a UC Davis Hellman Fellow in 2018.
Her recent research grants include two from the National Science Federation (NSF). One is a five-year Faculty Early Career Development (CAREER) Program award, titled “Nectar Chemistry and Ecological and Evolutionary Tradeoffs in Plant Adaptation to Microbes and Pollinators.” The other is a three-year collaborative grant, “The Brood Cell Microbiome of Solitary Bees: Origin, Diversity, Function, and Vulnerability.”
The virtual seminar is set for 4:10 to 5 p.m., Wednesday, Dec. 9 and will be hosted by Professor Richard "Rick" Karban of the Department of Entomology and Nematology. To attend, access this form for the direct link.
"As sessile organisms, plants have to adjust their metabolism to ever-changing environmental conditions in order to stay in place and successfully reproduce," Kessler says in his abstract. "Thereby plants orchestrate interactions with other organisms (e.g. other plants, herbivores, pathogens, predators etc.) by providing cues or signals to whoever can read them. The seemingly universal language used to manipulate those interactions is chemical. This presentation reviews some of the Kessler Lab research on the ecological functionality and environmental context-dependency of chemical information transfer in the charismatic Northeastern goldenrod plants, Solidago altissima."
As a chemical ecologist, his research focuses on the mechanisms, ecological consequences and the evolution of plant induced responses to herbivore damage.
"Moreover, we put a particular emphasis on studying the ecological functions and evolution of plant metabolic responses and chemical information transfer in the plants' native habitats. With more recent projects my group tries to apply some of the chemical ecology principles found in native systems to control insect pests in agricultural systems. My research includes a number of different study systems in New York, Utah, Peru, Costa Rica, Colombia and Kenya."
Professor Kessler received his master's degree from the University of Würzbug, Germany, where he studied ecology, genetics and geobotany. He earned his doctorate from the Max Planck Institute for Chemical Ecology and University of Jena, Germany.
Cooperative Extension specialist Ian Grettenberg, assistant professor, UC Davis Department of Entomology and Nematology, is coordinating the seminars. For any technical issues, contact Grettenberger at email@example.com.
- Generations of Insect Attacks Drive Plants to 'Talk' Publicly (The Scientist, March 1, 2020)
- Plants Use a Common 'Language' for Emergency Alerts (Cornell Chronicle, Oct. 2, 2019)
The seminar takes place from 4:10 to 5 p.m., Wednesday, Oct. 28. Access this site for the Zoom link. Host is Cooperative Extension specialist and agricultural entomologist Ian Grettenberger, assistant professor, UC Davis Department of Entomology and Nematology. He is coordinating the department's fall seminars.
"The research in our lab focuses on understanding how chemical compounds mediate interactions among microbes, plants, herbivores, and herbivore natural enemies," Helms says. "We combine analytical chemistry and behavioral ecology in laboratory and field-based research to investigate how organisms use chemistry to navigate, communicate, and defend themselves. This seminar will discuss some of our ongoing projects examining how plants and insect herbivores use chemical information from their environment to assess their risk of attack and how herbivore natural enemies use such information to find potential prey."
Helms, an assistant professor, holds two degrees from Pepperdine University, Malibu, Calif., both awarded in 2009: a bachelor of science degree in biology and a bachelor of arts degree in biochemistry. She received her doctorate in ecology in 2015 from The Pennsylvania State University, State College, Penn. While in the John Tooker lab, Helms studied the chemical ecology of plant-insect interactions, especially how plants defend themselves against insect herbivores. She investigated how plants use olfactory cues to predict impeding herbivore attacks and the molecular mechanisms involved.
In addition to the general field of chemical ecology, Helms' research interests include plant-insect interactions, tritrophic interactions, belowground chemical ecology, chemical communication, and plant defense.
Her most recent publications:
Helms, A.M., Ray, S., Matulis, N.L.*, Kuzemchak, M.C.*, Grisales, W.*, Tooker, J.F., Ali, J.G. Chemical cues linked to risk: Cues from belowground natural enemies enhance plant defences and influence herbivore behaviour and performance. Functional Ecology. 33, 798-808 (2019). DOI: 10.1111/1365-2435.13297
Acevedo, F.E., Smith, P., Peiffer, M., Helms, A.M., Tooker, J.T., Felton, G.W. Phytohormones in fall armyworm saliva modulate defense responses in plants. Journal of Chemical Ecology. (2019). https://doi.org/10.1007/s10886-019-01079-z
Yip, E.C., Sowers, R.P.*, Helms, A.M., Mescher, M.C., De Moraes, C.M., Tooker, J.F. Tradeoffs between defenses against herbivores in goldenrod (Solidago altissima). Arthropod-Plant Interactions. 13, 279-287 (2019). DOI: 10.1007/s11829-019-09674-3
For any technical issues regarding the seminar, contact Grettenberger at firstname.lastname@example.org.
The special forum, set from noon to 1 p.m. in Room 194 of Young Hall, is a new addition to Biodiversity Museum Day, a 9 a.m.-to 4 p.m. event showcasing 13 museums or collections. The event is free and family friendly.
The slate of speakers:
- Art Shapiro, distinguished professor of evolution and ecology, will discuss “Are Our Butterflies in Trouble?” (“Yes, they mostly are in trouble,” he says. He will discuss “How do we know and why?”)
- Gabrielle Nevitt, professor of animal behavior (on leave), will speak on “How Do Sub-Antarctic Seabirds Find their Food in the Vast Ocean?” (“They follow their nose," she says, "and sometimes it gets them into trouble.”)
- Melanie Truan, research ecologist, UC Davis Museum of Wildlife and Fish Biology, will cover “Biodiversity Studies at the UC Davis Wildlife Museum.” Biodiversity studies, she says, “can tell us a lot about the world and how it is functioning. This is especially important today where the influence of Homo sapiens is having profound impacts on the planet and its inhabitants.” She will touch on some of the ways that the UC Davis Museum of Wildlife and Fish Biology incorporates biodiversity into its research.
Prominent lepidopterist Art Shapiro, in his 49th year of service to UC Davis, joined the UC Davis faculty in 1971, first working in the former Department of Zoology. He has been monitoring California butterfly faunas since 1972. (See his website.) Shapiro is a fellow of the American Association for the Advancement of Science, the California Academy of Sciences, the Royal Entomological Society (U.K.) and the Explorers Club. Shapiro has authored some 300 scientific publications and the book, Field Guide to Butterflies of the San Francisco Bay and Sacramento Valley Regions. He has mentored 17 doctoral students and a similar number of master's students. Shapiro received his bachelor of arts degree in biology from the University of Pennsylvania in 1966 and his doctorate in entomology from Cornell in 1970.
Gabrielle Nevitt, a 25-year member of the UC Davis faculty, is a leader in the field of chemical ecology. She is known for her pioneering work in the sub-Antarctic that established a climate regulator, dimethyl sulphide, as a keystone foraging cue in marine ecosystems.
Her research frequently appears in leading scientific journals, including Science, Nature, and Proceedings of the National Academy of Sciences, and has been featured in many documentaries, including David Attenborough's “Life of Birds.” She is spotlighted in a popular Audubon piece, "Birds Can Smell, and One Scientist is Leading the Charge to Prove It."
Nevitt has served as a contributing lecturer in the International Course on Sensory Ecology at Lund University in Sweden since 2008 and was the first woman ever to chair the Scientific Advisory Board for the Max Planck Institute of Ornithology in Germany.
A graduate of Stanford University, Nevitt received her doctorate in zoology from the University of Washington, and served as a postdoctoral researcher in the Department of Neurobiology and Behavior at Cornell University. She has mentored some 60 undergraduate, graduate and postdoctoral scholars in her lab, as well as serving in advisory roles to graduate students at other institutions.
Melanie Truan, 16 years in her current position, received her doctorate in ecology in 2004 from UC Davis, studying the plants and animals of Putah Creek and laying the groundwork for a long-term research program that continues today. She is particularly interested in the art of eco-investigation, “a sort of detective work that employs in-depth observation and species monitoring to infer the structure and function of ecosystems, the results of which can be used to devise habitat reconciliation strategies and management objectives.” She holds a bachelor's degree in biology/environmental studies (1996) from UC Santa Cruz.
Truan says she is a self-professed "biophiliac" (E. O. Wilson 1984), bearing a strong urge to affiliate with other forms of life.
UC Davis Biodiversity Museum Day
The ninth annual UC Davis Biodiversity Museum Day, an annual science-based event, is billed as a “free, educational event for the community where visitors get to meet and talk with UC Davis scientists from undergraduate students to staff to emeritus professors and see amazing objects and organisms from the world around us,” according to Biodiversity Museum Day coordinator Tabatha Yang, education and outreach coordinator for the Bohart Museum of Entomology. Last year's event drew more than 4000 visitors. The event is always held the Saturday of Presidents' Day weekend.
The schedule is online at http://biodiversitymuseumday.ucdavis.edu/schedule.html.
Participating museums or collections and the hours they will be open:
- The Botanical Conservatory, the Greenhouses along Kleiber Hall Drive, will be open from 9 a.m. to 4 p.m.
The following five will be open from 9 a.m. to 1 p.m.:
- Arboretum and Public Garden, Shields Oak Grove, alongside the Vet School, Garrod Drive on campus
- Bohart Museum of Entomology, Room 1124 and Main Hall of the Academic Surge Building, Crocker Lane
- California Raptor Center, 340 Equine Lane, off Old Davis Road
- Museum of Wildlife and Fish Biology, Room 1394 and Mail Hall, Academic Surge Building, Crocker Lane
- Paleontology Collection, Earth and Physical Sciences Building, 434 LaRue Road
Two collections will be open from 10 a.m. to 2 p.m.:
- Phaff Yeast Culture Collection, Robert Mondavi Institute of Wine and Food Science, 392 Old Davis Road, on campus
- Viticulture and Enology Culture Collection, Robert Mondavi Institute of Wine and Food Science, 392 Old Davis Road, on campus
These four will be open from noon to 4 p.m.:
- Anthropology Museum, 328 Young Hall and grounds
- Center for Plant Diversity, Sciences Laboratory Building, off Kleiber Hall Drive
- Häagen-Dazs Honey Bee Haven, Bee Biology Road, off Hopkins Road (take West Hutchison Drive to Hopkins)
- Nematode Collection, Sciences Laboratory Building, off Kleiber Hall Drive
- Marine Invertebrate Collection, Sciences Laboratory Building, off Kleiber Hall Drive
All 13 sites are within walking distance except for the Häagen-Dazs Honey Bee Haven on Bee Biology Road and the Raptor Center on Old Davis Road. Further information, including a campus map, is available on the UC Davis Biodiversity Museum Day website.