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Title Transcription
ショクブツ セツダンコン ノ イオン コキュウ ソクテイ ノ カイリョウホウ ナラビニ ソノ エンセイ ショクブツ チュウセイ ショクブツコン エノ オウヨウ
Title Alternative (English)
An Improved Method for Measuring Ion Flow through Excised Roots and Its Application to Halophyte and Non-Halophyte Roots
File
language
eng
Author
Hirayama, Osamu
Mihara, Masashi
Hayashi, Kazuo
Description
An improved method for measureing ion flow through excised roots is described. The excised roots were bathed in monocation solution containing 5 mM glucose (for active transport conditions) or 1 mM KCN and 0.5mM vanadate (for passive transport conditions). The ion uptake was measured under applied pressure of 110 cm H_20 using ion chromatography. The ion transport rates were expressed on the basis of root surface area which was estimated from salt adhesion data. The present method was successfully applied to non-halophyte and halophyte roots. The results showed that the ion flow rates were much higher in halophyte roots than in non-halophyte ones. Halophyte roots (samphire, saltwort and reed) absorbed K^+ and <Na>^^^+ at a similar rate, while non-halophyte roots (spinach and cucumber) showed a selective uptake of K^+.
Journal Title
Bulletin of the Faculty of Agriculture, Shimane University
Volume
24
Start Page
233
End Page
238
ISSN
0370940X
Published Date
1990-12-21
NCID
AN00108015
Publisher
島根大学農学部
Publisher Aalternative
Shimane University, Faculty of Agriculture
NII Type
Departmental Bulletin Paper
OAI-PMH Set
Faculty of Life and Environmental Science
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