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http://dx.doi.org/10.3795/KSME-B.2003.27.11.1612

In Vivo Visualization of Flow in Xylem Vessels of a Bamboo Leaf Using Synchrotron X-ray Micro Imaging Technique  

Kim, Yang-Min (포항공과대학교 대학원 기계산업공학부)
Lee, Sang-Joon (포항공과대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.27, no.11, 2003 , pp. 1612-1617 More about this Journal
Abstract
Synchrotron X-ray micro imaging technique was employed to non-invasively monitor the water flow inside xylem vessels in a bamboo leaf. The phase contrast X-ray images clearly visualized plant anatomy and the rise of a water front inside the vessels. Consecutive X-ray images taken for 60 seconds revealed water rise kinetics against gravity in the xylem of a cut dry leaf taken from a bamboo tree. For the first time, traces of water rise, variation of contact angle between water and xylem wall as well as the internal structure of xylem were obtained. In xylem vessels, a repeating flow pattern has a typical flow velocity of 30.7$\mu\textrm{m}$/s and faster flow is established intermittently. It is concluded that the transmission type of X-ray micro imaging can be used as a powerful tool to investigate the ascent of sap in the xylem vessels at a resolution higher than that of MRI.
Keywords
Synchrotron X-ray Micro Imaging; Xylem; Water Refilling; Bamboo;
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Times Cited By KSCI : 1  (Citation Analysis)
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