Proton flux and elongation in primary roots of barley (Hordeum vulgare L.)

The elongation zone of the primary root of barley (Hordeum vulgare L.) has been reported to be markedly basic in pH, in apparent contradiction of the acid-growth theory. We determined simultaneously the location of the elongation zone and the basic zone in these roots and found them indeed to be the...

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Published inPlant physiology (Bethesda) Vol. 73; no. 1; pp. 199 - 201
Main Authors Roger A. O'Neill, Scott, Tom K.
Format Journal Article
LanguageEnglish
Published Rockville, MD American Society of Plant Physiologists 01.09.1983
Subjects
Auxins
Barley
Biological and medical sciences
Cell growth
Chemical agents
Corn
Fundamental and applied biological sciences. Psychology
Hordeum vulgare
Indoleacetic acids
Plant physiology and development
Plant roots
Plants
protons
Root cap
Root growth
roots
Short Communications
Vegetative apparatus, growth and morphogenesis. Senescence
Monocotyledones
Hordeum vulgare
Root
Gramineae
Growth
Angiospermae
PH
Spermatophyta
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Summary:The elongation zone of the primary root of barley (Hordeum vulgare L.) has been reported to be markedly basic in pH, in apparent contradiction of the acid-growth theory. We determined simultaneously the location of the elongation zone and the basic zone in these roots and found them indeed to be the same. However, sections of barley root elongation zones were found to respond to acidic, basic, and neutral solutions as predicted by the acid-growth theory.
Bibliography:F60
F
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ISSN:0032-0889
1532-2548
DOI:10.1104/pp.73.1.199