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Dimethylsulfoxide action on dark‐ and light‐induced leaflet movements and its necrotic effects on excised leaves of Cassia fasciculata
Author(s) -
Roblin Gabriel,
FleuratLessard Pierrette
Publication year - 1983
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.1399-3054.1983.tb05733.x
Subject(s) - darkness , cassia , leaflet (botany) , botany , period (music) , chemistry , biology , art , medicine , alternative medicine , pathology , traditional chinese medicine , aesthetics
Dimethylsulfoxide (DMSO) acts on dark‐ and light‐induced movements exhibited by leaflets of isolated leaves of Cassia fasciculate Michx. The closing movement (scotonasty), induced when the leaves are placed in darkness during the normal period of daylight, was inhibited, whereas the opening movement (photonasty), when the leaves arc transferred to light during the normal period of darkness, was promoted. The concentration for significant effects of DMSO was 1% (v/v) when applied over a 3‐h period. After five days, a necrosis of the leaflets was observed for DMSO concentrations as small as 0.1%, applied over a 6‐h period. Complete abscission took place if 3% DMSO was applied for more than 30 min.