Watertransport in plants at multiple scales: A physiological, ecological, andevolutionary appraisal
Zwieniecki, Maciej , Secchi, Francesca .
Molecular understanding of xylem refilling.
Drought induced embolism can severely impact plant fitness. Thus findings that plants can actively refill embolized vessels came with little surprise. However, despite significant research effort, the biophysical understanding of vessel refilling remains elusive. Basic information such as, understanding how plants generate a driving force for refilling, the surface properties of vessels and how they influence refilling process, sensory mechanisms involved n recognizing the presence of embolism or molecular activity of cells during refilling are still unknown. Recent analysis of transcriptome activity of parenchyma cells in embolized vessels provides new insight into understanding the biology of refilling and provides asolid basis to formulate hypotheses that describes the details of molecular responses of the parenchyma cells in response to the formation of xylem embolism. In this presentation I will discuss how investigations at the molecular level are unifying disparate information into a comprehensive view of refilling in plants.
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1 - Harvard University, Arnold Arboretum, 1300 Centre Street, Boston, MA, 02131, USA
xylem embolism and refilling.
Presentation Type: Symposium or Colloquium Presentation
Location: Delaware C/Hyatt
Date: Monday, July 9th, 2012
Time: 3:00 PM