caa a22 4500 477101534 CHVBK 20180405111543.0 cr unu---uuuuu 170330e19960701xx s 000 0 eng 10.1007/BF00195723 doi (NATIONALLICENCE)springer-10.1007/BF00195723 Light- and temperature-entrained circadian regulation of activity and mRNA accumulation of 1-aminocyclopropane-1-carboxylic acid oxidase in Stellaria longipes [Elektronische Daten] [Arumugam Kathiresan, D. Reid, C. Chinnappa] Stem and leaf tissues of Stellaria longipes Goldie (prairie ecotype) exhibit circadian rhythmicity in the activity and mRNA abundance for 1-aminocyclopropane-1-carboxylic acid oxidase (EC 1.4.3). The steady-state mRNA levels and enzymatic activity levels fluctuated with a period of approximately 24 h and reached their maxima by the middle of the light phase and minima by the middle of the dark phase. The oscillations showed damping under constant light, constant dark and constant temperature conditions, indicating that the rhythm is entrained by an external signal. The results indicate that light/dark cycles have greater entraining effects than temperature cycles. A 15-min red light pulse, but not a blue light pulse, could reset rhythm in continuous darkness, suggesting the possible role of a red-light signal transduction pathway in the circadian regulation of 1-aminocyclopropane-1-carboxylic acid oxidase. Springer-Verlag, 1996 1-aminocyclopropane-1-carboxylic acid oxidase (activity, mRNA) nationallicence Circadian rhythm nationallicence Light nationallicence Stellaria nationallicence Temperature nationallicence ACC : 1-aminocyclopropane-1-carboxylic acid nationallicence DD : continuous dark nationallicence LD : light-dark nationallicence LL : continuous light nationallicence ZT : Zeitgeber time (start of light period for circadian entrainment) nationallicence Kathiresan Arumugam Department of Biological Sciences, The University of Calgary, T2N 1N4, Calgary, Alberta, Canada aut Reid D. Department of Biological Sciences, The University of Calgary, T2N 1N4, Calgary, Alberta, Canada aut Chinnappa C. Department of Biological Sciences, The University of Calgary, T2N 1N4, Calgary, Alberta, Canada aut Planta Springer-Verlag 199/3(1996-07-01), 329-335 0032-0935 199:3<329 1996 199 425 https://doi.org/10.1007/BF00195723 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00195723 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kathiresan Arumugam Department of Biological Sciences, The University of Calgary, T2N 1N4, Calgary, Alberta, Canada aut NATIONALLICENCE 700 1- Reid D. Department of Biological Sciences, The University of Calgary, T2N 1N4, Calgary, Alberta, Canada aut NATIONALLICENCE 700 1- Chinnappa C. Department of Biological Sciences, The University of Calgary, T2N 1N4, Calgary, Alberta, Canada aut NATIONALLICENCE 773 0- Planta Springer-Verlag 199/3(1996-07-01), 329-335 0032-0935 199:3<329 1996 199 425 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 477100201 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer