21521136
not annotated - annotated - LINNAEUS only
Host plant effects on alkaline phosphatase activity in the whiteflies, Bemisia tabaci Biotype B and Trialeurodes vaporariorum.
Bemisia tabaci (Gennadius) B-biotype and Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae) often coexist on greenhouse-grown vegetable crops in northern China. The recent spread of B. tabaci B-biotype has largely replaced T. vaporariorum, and B-biotype now overlaps with T. vaporariorum where common hosts occur in most invaded areas. The impact of the B-biotype on the agro eco system appears to be widespread, and involves the ability to compete with and perhaps replace other phytophages like T. vaporariorum. An emerging hypothesis is that the B-biotype is physiologically superior due at least in part to an improved ability to metabolically utilize the alkaline phosphatase pathway. To test this hypothesis, alkaline phosphatase activity was studied in the B-biotype and T. vaporariorum after feeding on a number of different hosts for a range of durations, with and without host switching. Alkaline phosphatase activity in T. vaporariorum was 1.45 to 2.53-fold higher than that of the B-biotype when fed on tomato for 4 and 24 h, or switched from tomato to cotton and cabbage for the same durations. However, alkaline phosphatase activity in the B-biotype was 1.40 to 3.35-fold higher than that of T. vaporariorum when the host switching time was -72 and -120 h on the same plant. Both short-term (4 h) and long-term (72 h) switching of plant hosts can significantly affect the alkaline phosphatase activity in the two species. After -120 h, feeding on tomato and cotton alkaline phosphatase activity in the B-biotype was significantly higher than that of T. vaporariorum. It was shown that alkaline phosphatase aids the species feeding on different plant species, and that the B-biotype is physiologically superior to T. vaporariorum in utilizing the enzyme compared to T. vaporariorum over longer periods of feeding.
Ann file
T1 Species 71 85 Bemisia tabaci
N1 Reference T1 Taxonomy:7038
T2 Species 100 125 Trialeurodes vaporariorum
N2 Reference T2 Taxonomy:88556
T3 Species 129 143 Bemisia tabaci
N3 Reference T3 Taxonomy:7038
T4 Species 170 195 Trialeurodes vaporariorum
N4 Reference T4 Taxonomy:88556
T5 Species 322 331 B. tabaci
N5 Reference T5 Taxonomy:7038
T6 Species 363 378 T. vaporariorum
N6 Reference T6 Taxonomy:88556
T7 Species 412 427 T. vaporariorum
N7 Reference T7 Taxonomy:88556
T8 Species 637 652 T. vaporariorum
N8 Reference T8 Taxonomy:88556
T9 Species 918 933 T. vaporariorum
N9 Reference T9 Taxonomy:88556
T10 Species 1071 1086 T. vaporariorum
N10 Reference T10 Taxonomy:88556
T11 Species 1155 1161 tomato
N11 Reference T11 Taxonomy:4081
T12 Species 1195 1201 tomato
N12 Reference T12 Taxonomy:4081
T13 Species 1205 1211 cotton
N13 Reference T13 Taxonomy:3635
T14 Species 1216 1223 cabbage
N14 Reference T14 Taxonomy:3712
T15 Species 1346 1361 T. vaporariorum
N15 Reference T15 Taxonomy:88556
T16 Species 1601 1607 tomato
N16 Reference T16 Taxonomy:4081
T17 Species 1612 1618 cotton
N17 Reference T17 Taxonomy:3635
T18 Species 1704 1719 T. vaporariorum
N18 Reference T18 Taxonomy:88556
T19 Species 1867 1882 T. vaporariorum
N19 Reference T19 Taxonomy:88556
T20 Species 1919 1934 T. vaporariorum
N20 Reference T20 Taxonomy:88556