Calendar Name: seminars
Scheduled for: Friday, April 1 2011, 14:00 - 15:30
Event text: Dr Jos� R. Dinneny
Temasek Life Sciences Laboratory
National University of Singapore
SINGAPORE
Details: �Towards a spatiotemporal understanding of environmental
response in roots�
ABSTRACT
The response of plant roots to environmental change
serves as an excellent model for understanding the
dynamic regulation of gene expression in a multicellular
context. To shed light on the spatiotemporal regulation
of the salt stress response in roots, we are utilizing
tools common to both developmental and systems biology.
Our studies have revealed that the salt stress response
is characterized by waves of transcriptional activity,
which are associated with dynamic changes in morphology
and growth rates. We have recently extended our interest
of environmental responses into the role that moisture
plays in locally regulating root growth and development.
In a process we term �hydropatterning�, we have
discovered that contact of the root tip with moisture
elicits a cascade of changes in root development
including the suppression of hair initiation, activation
of lateral root development and changes in gravity
response.
The mechanisms for hydropatterning are currently being
investigated and will be discussed during the seminar.
