Seminar
Professor, Mathematics, UArizona
The beautiful pink, red, purple, and blue colors observed in flowers, fruits, leaves, and stems of plants derive primarily from a class of cell pigments called anthocyanins. These biologically active chemicals play diverse roles in plant ecology and cell biology. In particular, pollinators recognize both the colors and spatial color patterns; alterations in the patterns due to pollutants or climate change have been implicated in plant-pollinator mismatches. Medicinally, anthocyanins are powerful antioxidants, as well as antihypertensive, antitumor, antidiabetic, and antifungal agents. Anthocyanins undergo an incredible number of reversible structural, and therefore color and functional, changes which are pH, temperature, light, and concentration dependent. They also associate with each other to form larger complexes which impact their ecological and medicinal functions. In this talk, we provide experimental evidence for spatial variation in the degree of anthocyanin association in flower pigment patterns. We build a model for anthocyanin pattern formation that includes association and apply methods of topological data analysis combined with machine learning to compare the model to experimental data.
Host: Ingmar Riedel-Kruse
When
11 a.m. to 12:15 p.m. Tuesday
Location
Saguaro Hall, Room 114
When
11 a.m. to 12:15 p.m. March 19, 2024
Location
Saguaro Hall, Room 114
When
11 a.m. to 12:15 p.m. Feb. 27, 2024
Location
Saguaro Hall, Room 114
Host: Ryan Gutenkunst
When
11 a.m. to 12:15 p.m. Feb. 13, 2024
Location
Saguaro Hall, Room 114
Host: Beckman Scholars
When
11 a.m. to 12:15 p.m. April 9, 2024
Location
ENR2 Room S225
When
11 a.m. to 12:15 p.m. April 2, 2024
Location
Saguaro Hall, Room 114
In this seminar, I will present research from my lab on the role of biological resilience in lifespan extension. Our work demonstrates a strong correlation between stress resistance and lifespan that results from similar genetic pathways contributing to both phenotypes. Moreover, our work suggests that the upregulation of pathways of cellular resilience contributes to lifespan extension in long-lived mutants. One of the pathways that I will focus on is the mitochondrial unfolded protein response.
Host: George Sutphin
When
11 a.m. to 12:15 p.m. April 16, 2024
Location
Saguaro Hall, Room 114
Host: Ted Weinert
When
11 a.m. to 12:15 p.m. Feb. 20, 2024
Location
Saguaro Hall, Room 114
Host: Ryan Gutenkunst
When
11 a.m. to 12:15 p.m. Feb. 6, 2024
Location
Saguaro Hall, Room 114
Host: Ross Buchan
When
11 a.m. to 12:15 p.m. Jan. 16, 2024
Location
Saguaro Hall, Room 114
