Circadian Rhythmicity in the Activities of Phenylalanine Ammonia-Lyase from Lemna perpusilla and Spirodela polyrhiza

Autor:	William R. Gordon, Willard L. Koukkari
Rok vydání:	1978
Předmět:	Lemna perpusilla biology Physiology Phenylalanine Plant Science Phenylalanine ammonia-lyase biology.organism_classification Continuous light Spirodela polyrhiza Biochemistry Darkness Botany Genetics Circadian rhythm Tyrosine
Zdroj:	Plant Physiology. 62:612-615
ISSN:	1532-2548 0032-0889
DOI:	10.1104/pp.62.4.612
Popis:	The oscillations in phenylalanine ammonia-lyase activity from Spirodela polyrhiza and phenylalanine ammonia-lyase and tyrosine ammonia-lyase activities from Lemna perpusilla displayed a circadian rhythm under continuous light. Rhythmicity in enzymic activity could not be detected in continuous darkness since under this condition phenylalanine ammonia-lyase activity remains at a fairly constantly low level. Results from our studies of the oscillatory pattern of the respective activities of phenylalanine and tyrosine ammonia-lyase support their “inseparability.”
Databáze:	OpenAIRE
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