. 2015 Jul 13;169(3):1656–1670. doi: 10.1104/pp.15.00794

Table IV. Detection of isotopically labeled APGs.

Isotopically labeled APGs were detected 1 d after injection of different concentrations of l-Ile-¹³C_6, l-Leu-¹³C₆, and l-Val-2,3,4,4,4,5,5,5-D₈ into strawberry ‘Mara des Bois’ fruits.

Concentration Applied	Substrates	Compound	Products
Concentration Applied	Substrates	Compound	Unlabeled	Labeled
mm			%
10	l-Leu	M3	100^a	0^b
50	l-Leu	M3	100	0
10	l-Leu-¹³C₆	M3	100	19.7 ± 1.3
50	l-Leu-¹³C₆	M3	100	78.7 ± 6.3
10	l-Ile	M1	100	0
50	l-Ile	M1	100	0
10	l-Ile-¹³C₆	M1	100	15.9 ± 5.3
50	l-Ile-¹³C₆	M1	100	40.4 ± 0.3
10	l-Val	M2	100	0
50	l-Val	M2	100	0
10	l-Val-2,3,4,4,4,5,5,5-D₈	M2	100	22.9 ± 4.7
50	l-Val-2,3,4,4,4,5,5,5-D₈	M2	100	48.0 ± 24.9

Integrated peak areas of pseudomolecular ions m/z –371, –371, and –357 (after application of l-Leu, l-Ile, and l-Val, respectively) were set to 100%. ^b Percentages of labeled products were calculated from the integrated peak areas of the pseudomolecular ions of isotopically labeled products m/z –376, –376, and –364 (after application of l-Leu-¹³C₆, l-Ile-¹³C₆, and l-Val-2,3,4,4,4,5,5,5-D₈, respectively).