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Further examination of the effects of IAA and anoxia on the growth rate and the spatially separate electrogenic ion pumps in bean hypocotyl
Author(s) -
MIZUNO AKIKO,
OKAMOTO HISASHI
Publication year - 1983
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/1365-3040.ep11587643
Subject(s) - hypocotyl , vigna , chemistry , air stream , aerosol , anoxic waters , phaseolus , growth rate , nitrogen , ion , analytical chemistry (journal) , botany , horticulture , environmental chemistry , biology , environmental engineering , environmental science , organic chemistry , geometry , mathematics
. Measurements of V ps and V px were made on Vigna sesquipedalis hypocotyls in a stream of air or nitrogen during and after the application of IAA in an aerosol added to the gas stream. The lAA‐induced hyperpolarization of V ps and increase in growth rate in air was maintained for at least half an hour after the 50‐min IAA treatment was terminated. Changing from air to O 2 ‐free gas stream in the presence of IAA aerosol depolarized V ps and V px , and then reduced growth rate, to the same extent as in hypocotyls in which IAA and O 2 supply were terminated simultaneously. Under anoxic conditions, application of an IAA N 2 ‐aerosol had no effect on V ps . V px or growth rate.