Table II.
DMAPP content of leaves of four isoprene- and MBO-emitting and nonemitting species
| Species | DMAPP | ||||
|---|---|---|---|---|---|
| μmol m−2 | nmol g fresh wt−1 | nmol g dry wt−1 | nmol mg Chl−1a | nmol mg protein−1 | |
| Cottonwood (young; isoprene-emitting) | 2.16 ± 0.25 | 13.86 ± 1.56 | 49.38 ± 5.54 | 8.07 ± 0.14 | 0.17 ± 0.15 |
| Cottonwood (isoprene-emitting) | 14.23 ± 1.62 | 91.17 ± 10.36 | 257.5 ± 29.25 | 33.97 ± 0.13 | 1.19 ± 0.12 |
| Common pole bean (nonemitting) | 6.28 ± 0.45 | 40.24 ± 2.9 | 252.3 ± 18.19 | 19.28 ± 0.08 | 0.84 ± 0.18 |
| Eastern white pine (nonemitting) | n.d.b | 328.6 ± 43.98 | 851.7 ± 114.0 | 229.0 ± 0.14 | 7.43 ± 0.17 |
| Gray pine (MBO-emitting) | n.d. | 180.0 ± 10.56 | 498.3 ± 29.24 | 106.4 ± 0.11 | 4.53 ± 0.18 |
Leaves, or needles, of each species were similarly orientated and harvested on the same day in the middle of the photoperiod; incident PPFD = 1,650 μE. Values are means ± sd, n = 4 to 6.
a
Chl, Total Chl (a + b).
b
n.d., Not determined.