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Arabidopsis thaliana floral stem elongation: Evidence for an endogenous circadian rhythm |
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Published in | Plant Physiology and Biochemistry. 1998, vol. 36, p. 469-472 | |
Abstract | The floral stem elongation of Arabidopsis thaliana, Landsberg erecta ecotype, was studied with a plant growthmeasuring apparatus using linear voltage differential transformers as sensors. Elongation rate displayed a clear rhythm which could be synchronized by a L:D (12:12) or L:D (7:7) photoperiod. The rhythm persisted afterwards in continuous constant conditions (CL). When pre-synchronization was L:D (12:12), the period in CL was 23.5 h. After L:D (7:7) synchronization (equal light/dark photoperiod which was not in phase with the 24 h daily period) a period of 21.4 h was measured in CL. Moreover, this later treatment triggered a significant increase in the first internode length. Thus, these results showed clearly that the floral stem growth was under the control of an endogenous circadian rhythm | |
Keywords | Arabidopsis thaliana — Floral stem elongation rate — Photoperiod — Circadian rhythm | |
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Citation (ISO format) | JOUVE, Laurent, GREPPIN, Hubert, DEGLI AGOSTI, Robert. Arabidopsis thaliana floral stem elongation: Evidence for an endogenous circadian rhythm. In: Plant physiology and biochemistry, 1998, vol. 36, p. 469-472. doi: 10.1016/S0981-9428(98)80212-X https://archive-ouverte.unige.ch/unige:42741 |