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Abstract Detail



Xylem apoplast-symplast interactions

Jacobsen, Anna [1], Hacke, Uwe [2].

Xylem apoplast-symplast interactions.

Although functional xylem conduits (vessels and tracheids) are dead at maturity, there are many living cells in the xylem. These living cells are functionally important in the xylem and also are important in forming connections between the xylem and other tissues and living cells within the plant body. In their xylem, woody plants have developed a 3-dimensional symplastic network of ray and axial parenchyma cells. Rays function in storage of organic and inorganic material and serve as radial translocation routes for water and solutes. Such radial exchange is required to connect different tissues, including xylem, vascular cambium, and phloem. Xylem parenchyma cells may also play a role in the refilling of embolized vessels and in minimizing the spread of pathogens in dysfunctional conduits. Symposium speakers will discuss the multiple functions of living cells in xylem. Specific topics include the localization and function of aquaporins in xylem and phloem, vessel development and living vessels, tradeoffs between allocation to parenchyma versus vessels, and xylem-phloem interactions.

Broader Impacts:


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1 - California State University Bakersfield, 9001 Stockdale Hwy, 61 SCI, Bakersfield, CA, 93311, USA, 310-740-7659
2 - University of Alberta, Renewable Resources, 442 Earth Sciences Building, Edmonton, AB, T6G 2E3, Canada

Keywords:
xylem
symplast
aquaporins
rays
embolism repair
xylogenesis
wood.

Presentation Type: Symposium or Colloquium Presentation
Session: C3
Location: Belle-Chasse/Riverside Hilton
Date: Monday, July 29th, 2013
Time: 8:00 AM
Number: C3SUM
Abstract ID:8
Candidate for Awards:None


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