Effect of manganese ions on benzyladenine-induced growth and chlorophyll synthesis in excised cucumber cotyledons

Mudliar, A.; Bharti, S.

Physiologia Plantarum 61(4): 629-633

1984


ISSN/ISBN: 0031-9317
DOI: 10.1111/j.1399-3054.1984.tb05181.x
Accession: 001188250

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Abstract
The behaviour of endogenous Mn2+ was studied by electron spin resonance spectroscopy during BA-induced growth of excised cucumber (cv. Long green) cotyledons. The level of endogenous Mn2+ was decreased by BA treatment, most pronouncedly after 96 h. MnCl2 applied alone promoted chlorophyll synthesis at relatively low concentrations but in the presence of BA higher concentrations of MnCl2 were required for stimulation of chlorophyll synthesis. A pronounced increase in growth was observed when Mn2+ was applied with BA at 96 h, when the decline in the endogenous level of paramagnetic Mn2+ was maximal.

Effect of manganese ions on benzyladenine-induced growth and chlorophyll synthesis in excised cucumber cotyledons