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Inhibition of cytokinin‐induced plant growth by jasmonic acid and its methyl ester
Author(s) -
Ueda Junichi,
Kato Jiro
Publication year - 1982
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1982.tb00255.x
Subject(s) - kinetin , jasmonic acid , methyl jasmonate , callus , cytokinin , raphanus , cotyledon , chemistry , glycine , urea , hypocotyl , botany , biochemistry , biology , tissue culture , salicylic acid , auxin , amino acid , in vitro , gene
Effects of jasmonic acid, methyl jasmonate and ABA on cytokinin‐induced soybean ( Glycine max Merrill cv. Kingen No. 1) callus growth and radish ( Raphanus sativus L. cv. Comet) cotyledon growth were studied. Jasmonic acid and methyl jasmonate were powerful inhibitors of kinetin‐ or N‐phenyl‐N′‐(2‐chloro‐4‐pyridyl)urea‐induced soybean callus growth, the former being more effective than the latter, especially at low concentrations (0.45 to 4.5 μ M ). These compounds could completely eliminate kinetin‐ or N‐phenyl‐N′‐(2‐chloro‐4‐pyridyl)urea‐induced soybean callus growth at 45 μ M . At low concentrations ABA had no effect but at 450 μ M it completely eliminated callus growth induced by kinetin. Of the compounds tested ABA was the most powerful inhibitor of radish cotyledon growth in the presence or absence of kinetin. Jasmonic acid and methyl jasmonate were much less effective than ABA in this assay system.