Article (Scientific journals)
Influence of Kinetin on Protochlorophyll(ide) Accumulation and on the Shibata Shift in Raphanus Seedlings
Buschmann, Claus; Sironval, Cyrille
1978In Planta, 139, p. 127-132
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Keywords :
Cytokinin; Prochlorophyll; Raphanus; Shibata shift
Abstract :
[en] Radish seedlings (Raphanus sativus L. Saxa Treib) were grown in the dark with or without added kinetin (2 mg/1=9.29 μM). Low-temperature (77° K) fluorescence emission and absorption spectra of etiolated cotyledons were registered at increasing seedling age before and immediately, 30 s and 30 min after one 1-ms flash. Kinetin was found to induce a higher accumulation of the phototransformable protochlorophyll(ide) P657-650 in etiolated cotyledons, especially from day 6 to day 10 after germination. The amount of the P657-650 protochlorophyll(ide) resynthesized during a 30-min dark period after a 1-ms flash decreased with seedling age. It was smaller in cotyledons from kinetin-treated seedlings at day 6 after gemination, and at that age only. The ability to perform the Shibata shift decreased with increasing seedling age. In cotyledons from 10- and 13-day-old seedlings, the shift was accomplished to a greater extent when the plants were grown in the presence of kinetin.
Disciplines :
Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Buschmann, Claus ;  Université de Liège - ULiège
Sironval, Cyrille 
Language :
English
Title :
Influence of Kinetin on Protochlorophyll(ide) Accumulation and on the Shibata Shift in Raphanus Seedlings
Publication date :
1978
Journal title :
Planta
ISSN :
0032-0935
eISSN :
1432-2048
Publisher :
Springer, Germany
Volume :
139
Pages :
127-132
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
NATO - North Atlantic Treaty Organization [BE]
Funding text :
This work was sponsored by a NATO fellowship given to C. Buschmann.
Commentary :
Received 14 August ; accepted 24 October 1977
Available on ORBi :
since 04 October 2023

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