Hormonal Regulation of Plant Adaptive Responses to Environmental Signals
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10 November 2022
4:00 PM - University Campus Bohunice (pavilion B11/ seminar room 132)
Lecture will be held in English
Speaker
Group leader
True to their name’s Greek roots, plant hormones “set in motion” a myriad of physiological processes. Influencing and modulating each other, an intricate network of interactions arises. The Benkova group seeks to untangle this network and understand its molecular basis.
Plants as sessile organisms constantly integrate varying environmental signals to flexibly adapt their growth and development. Local heterogeneities in water and nutrients availability, sudden changes in temperature, light or other stresses trigger dramatic changes in plant growth and development. Multiple hormonal signaling cascades interconnected into complex networks act as essential endogenous translators of these exogenous signals in plant adaptive responses. How the hormonal networks are established, maintained and modulated to control specific developmental outputs is the focus of the Benkova group. Recently, the group has located several convergence points that integrate different hormonal inputs. Importantly, some of these identified components exceed their function in the hormonal crosstalk and provide functional links with pathways mediating perception of environmental stimuli.
Link to research group of Eva Benkova.
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About the lecture
"Hormonal regulation of root adaptive responses to environmental signals"
Exploitation and acquisition of nutrients from the soil is one of the most challenging aspects of plant adaptation to a sessile life-style. Plant must cope with varying availabilities of mineral elements and secure their optimal income into plant body. This is achieved through adjustment of mechanisms and pathways mediating soil exploitation, uptake of elements, and distribution within the plant body. This vital function of effective soil exploitation and balanced acquisition of all elements is executed by a root organ. In the soil, the root system perceives and integrates local and systemic signals on the plant’s nutrient status to regulate activity of pathways mediating nutrient uptake and distribution. An important component of this nutrient management strategy involves rapid modulation of root growth and development. In response to nutrient availability, root meristem activity, root elongation growth as well as branching pattern are adjusted in order to optimize nutrient provision to the plant body. Applying state of the art microscopy and biochemical tools we aim at dissecting molecular mechanisms underlying growth and developmental adaption of root to varying nutrition.
Registration for lunch with the speaker /for Ph.D. students/
The sponsored lunch usually takes place in the Campus River restaurant. Please meet the speaker and other students at 12:45 at the reception desk at the main entrance (building B22, see the map below).
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