Table 1. Mass Composition and Fatty Acid Flux Sharing between the Two Glycerolipid Pathways in Arabidopsis Grown at 10, 22, and 30°C.

	Mass of Fatty Acid (mol/1000 mol)a	sn-2 Position (%)b		Fatty Acid Entering Prokaryotic Pathway (mol/1000 mol Fatty Acid)	Fatty Acid Entering Eukaryotic Pathway (mol/1000 mol Fatty Acid)
		C16	C18
MGDG
10°C	411	79	21	325	86
22°C	380	76	24	289	91
30°C	387	68	32	263	124
DGDG
10°C	159	13	87	21	138
22°C	160	16	84	26	134
30°C	179	18	82	32	147
PC
10°C	166	2	98	3	163
22°C	176	8	92	14	162
30°C	161	4	96	6	155
PG
10°C	101	90	10	91	10
22°C	101	93	7	94	7
30°C	103	95	5	98	5
PE
10°C	114	0	100	0	114
22°C	124	0	100	0	124
30°C	106	0	100	0	106
PI
10°C	30	0	100	0	30
22°C	35	0	100	0	35
30°C	35	0	100	0	35
SQDG
10°C	20	100	0	20	0
22°C	23	100	0	23	0
30°C	28	100	0	28	0
Total
10°C	1000			460	540
22°C	1000			445	555
30°C	1000			428	572

Data were calculated based on results of Supplemental Table 1 and Figure 1 according to methods of Browse et al. (1986) and Shen et al. (2010). C16 represents the sum of 16:0, 16:l, 16:2, and 16:3; C18 represents the sum of 18:0, 18:1, 18:2, and 18:3.

^aAn original input of 1000 mole of fatty acids biosynthesized in the chloroplast as acyl-ACP species.

^bEach lipid species was divided between the prokaryotic and eukaryotic pathways on the basis of content of C16 at the sn-2 position.