Inhibition of the formation of adventitious roots on cucumber hypocotyls by the fractions and methoxybenzylglutamine from xylem sap of squash foot

Citation
S. Satoh et al., Inhibition of the formation of adventitious roots on cucumber hypocotyls by the fractions and methoxybenzylglutamine from xylem sap of squash foot, J PLANT RES, 111(1104), 1998, pp. 541-546
Citations number
33
Categorie Soggetti
Plant Sciences
Journal title
JOURNAL OF PLANT RESEARCH
ISSN journal
09189440 → ACNP
Volume
111
Issue
1104
Year of publication
1998
Pages
541 - 546
Database
ISI
SICI code
0918-9440(199812)111:1104<541:IOTFOA>2.0.ZU;2-J
Abstract
In studies of the functions of roots in the development of aboveground orga ns, the butanol fraction of xylem sap collected from squash root was found to have inhibitory activity against the formation of adventitious roots on the hypocotyls of cucumber in a culture of shoot cutting. The inhibitory ac tivity was fractionated with reverse phase column chromatographies, and an inhibitory fraction was recovered with a single peak of absorbance at 280 n m, which contained a novel amino acid, N-5-(4-methoxyphenyl) methyl-L-gluta mine (methoxybenzylglutamine) as a major component (Inouye et al. 1998). Ch emically synthesized methoxybenzylglutamine (5 mM) inhibited the formation of adventitious roots and also inhibited the growth of first leaf and cotyl edons in a culture of shoot cuttings. On the basis of the results obtained, discussed is possible regulation of the developmental events on the aboveg round organs by the roots through xylem sap.