Open AccessTransport of Rubidium Absorbed by the Apex of the Bean Root
Author(s) -
Kerry K. Steward,
H. V. Koontz
Publication year - 1968
Publication title -
plant physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.554
H-Index - 312
eISSN - 1532-2548
pISSN - 0032-0889
DOI - 10.1104/pp.43.4.583
Subject(s) - rubidium , xylem , apex (geometry) , nutrient , botany , biology , horticulture , radiochemistry , chemistry , potassium , ecology , organic chemistry
Rubidium-86 was applied to the terminal 5.0 mm region of intact roots for a 6 hour period. The plants were then harvested after 0, 18, 24, 48, 72, or 96 hours additional growth in a rubidium-free continuously renewed nutrient solution. A substantial portion of the rubidium absorbed in a region of the root devoid of functional xylem tissue was ultimately transported to more basipetal regions.
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