Table 1. Influence of Daytime and Night Temperatures on C Allocation, C Utilization, and the Diurnal Timing of Growth.

Line	Thermocycle	Diurnal C Turnover as % of A	Growth Rate at Night as % of That in the Daytime	R as % of Diurnal C Turnover	Estimated Rg (g C/g DW per Night)	Estimated Maintenance Respiration (g C/DW per Night)
Col-0	12°C/12°C	70	73	37	0.0062	0.0123
Bu-2	12°C/12°C	60	51	33	0.0069	0.0101
Lip-0	12°C/12°C	84	160	35	0.0064	0.0106
Col-0	24°C/12°C	53	34	40	0.0061	0.0140
Bu-2	24°C/12°C	52	30	45	0.0060	0.0182
Lip-0	24°C/12°C	45	23	43	0.0058	0.0156
Col-0	16°C/16°C	76	99	38	0.0075	0.0151
Bu-2	16°C/16°C	62	49	38	0.0075	0.0157
Lip-0	16°C/16°C	58	37	45	0.0057	0.0175
Col-0	24°C/16°C	49	21	56	0.0047	0.0252
Bu-2	24°C/16°C	43	20	47	0.0060	0.0204
Lip-0	24°C/16°C	52	30	45	0.0068	0.0215
Col-0	24°C/24°C	42	12	66	0.0034	0.0297
Bu-2	24°C/24°C	43	10	74	0.0026	0.0342
Lip-0	24°C/24°C	44	11	72	0.0028	0.0343

Growth in daytime was estimated as the difference between photosynthesis (A) and C turnover, defined as the sum of the C in starch, sugars, organic acids, and amino acids turned over during the night. Growth at night was estimated as the difference between C turnover and respiration (R). The growth rates represent the growth per hour. R_g was estimated as growth rate × 0.2. Maintenance respiration was estimated as R – R_g. The original data and more information are available inSupplemental Data Set 3 online.