Abstract:
:The effects of the plant growth substances indoleacetic acid (IAA) and fusicoccin on the transmembrane potential of Avena coleoptile cells (at 27-29 C) were studied. Fusicoccin caused hyperpolarization of the membrane potential which started after a lag of less than 20 seconds, and which on average reached -49 mv at an external K(+) concentration of 1 mm and -75 mv at 0.1 mm K(+). IAA caused a hyperpolarization of -25 mv starting after a lag of 7 to 8 minutes. These results suggest that fusicoccin and IAA both activate electrogenic H(+) extrusion.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Cleland RE,Prins HB,Harper JR,Higinbotham Ndoi
10.1104/pp.59.3.395subject
Has Abstractpub_date
1977-03-01 00:00:00pages
395-7issue
3eissn
0032-0889issn
1532-2548journal_volume
59pub_type
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