To analyze the persistence of the 35S promoter,
nos terminator, and hpt, we buried the leaves and rootstocks
of transgenic watermelons (Citrullus lanatus (Thunb.)
Matsum. & Nakai) in 10 cm of soil. Qualitative and
quantitative PCR analyses showed that the amount of
transgenes in leaf samples was greatly decreased, by 70%,
after 1 month, and only 2.5% remained after 2 months. No
transgenes were detected in the leaves after 3 months. For
buried rootstock samples, transgenes also degraded quickly,
but a very small amount was still detectable up to 3 months
later. In our investigation of possible gene transfer from
decomposing transgenic watermelon to soil bacteria, only
the 35S promoter was detected. However, further examination
using colony dot hybridization tests indicated that such
a transfer did not occur.
To analyze the persistence of the 35S promoter,nos terminator, and hpt, we buried the leaves and rootstocksof transgenic watermelons (Citrullus lanatus (Thunb.)Matsum. & Nakai) in 10 cm of soil. Qualitative andquantitative PCR analyses showed that the amount oftransgenes in leaf samples was greatly decreased, by 70%,after 1 month, and only 2.5% remained after 2 months. Notransgenes were detected in the leaves after 3 months. Forburied rootstock samples, transgenes also degraded quickly,but a very small amount was still detectable up to 3 monthslater. In our investigation of possible gene transfer fromdecomposing transgenic watermelon to soil bacteria, onlythe 35S promoter was detected. However, further examinationusing colony dot hybridization tests indicated that sucha transfer did not occur.
การแปล กรุณารอสักครู่..
