Effects of mti-2 Transgenic Potato Plants on the Aphid Myzus persicae (Sternorrhyncha: Aphididae)

Table 1

Average (± s.d.) trypsin activity in presence of leaf protein crude extracts from nontransformed (NT) and mti-2-expressing potato lines.

Line	Average trypsin activity  (pmol hydrolysed azocaseine/min/mg of trypsin)
NT (= 100% activity)	93.0±0.2
DM1	83.7±0.0
DM2	75.1±10.2
DM3	79.0±1.8
DM4	79.5±6.7
DM5	69.8±5.5
DM6^∗	60.2±10.3
DM7^∗	48.6±4.1
DM8	81.8±1.4
DM9	66.6±0.3
DM11^∗	63.2±0.1
DM12	100.2±1.6
DM13	77.9±4.5
DM14	73.8±3.7
DM15	74.4±4.8
DM16	75.0±9.9
DM17	73.1±3.2
DM18	82.1±3.9
DM19^∗	60.7±9.4
DM20	66.9±3.2
DM21	80.2±3.5
DM22	75.8±0.8
DM23	78.8±8.1
DM24	80.3±11.4
DM26	71.7±2.9
DM28	80.3±4.0
DM29	68.6±0.1
DM30	73.0±5.3
DM31	85.1±11.3
DM32	76.4±13.2
DM33	83.1±5.7
DM34	67.7±7.0
DM35	83.2±0.1

∗Selected lines in which at least 30% of trypsin activity were inhibited compared to nontransformed line. Trypsin activity inhibition could not be determined for DM10, DM25, and DM27 lines.