PMID- 12549216 OWN - NLM STAT- MEDLINE DCOM- 20030506 LR - 20151119 IS - 0001-5334 (Print) IS - 0001-5334 (Linking) VI - 34 IP - 3 DP - 2001 Sep TI - [Detection and analysis of alien genes in transgenic rice by fluorescence in situ hybridization]. PG - 163-8 AB - Using fluorescence in situ hybridization (FISH) with metaphase preparations, we localized a transferred barnase-psl DNA sequence onto chromosomes in 8 rice transgenic plants. All the tested rice transgenic lines showed hybridization signals on the middle and terminal regions of chromosome arms except for those close to centromeres. In two lines, two different integration sites were identified, and the other lines showed only one integration site. With the aid of Southern analysis and expression detection, we found that the barnase tended to show a higher level expression in the lines whose integration sites near the distal regions of chromosomes, while the expression level became lower in the lines whose integration sites near the centromeres. This result suggested a possible relationship between chromosomal location of transgenes and the expression level. However it showed no obvious relationship between copy numbers and expression levels. In most cases, the results of multi-color FISH showed that barnase-ps1 always integrated at the same position on the chrmosome as the reporter genes(pHctinG). FAU - Jin, W W AU - Jin WW AD - Key Lab of MOE for Plant Developmental Biology, Wuhan University, Wuhan 430072. FAU - Li, X AU - Li X FAU - Li, Z Y AU - Li ZY FAU - Ning, S B AU - Ning SB FAU - Ling, D H AU - Ling DH FAU - Song, Y C AU - Song YC LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Shi Yan Sheng Wu Xue Bao JT - Shi yan sheng wu xue bao JID - 0413570 SB - IM MH - Chromosome Mapping MH - Gene Dosage MH - Gene Expression MH - In Situ Hybridization, Fluorescence/*methods MH - Oryza/*genetics MH - *Plants, Genetically Modified EDAT- 2003/01/29 04:00 MHDA- 2003/05/07 05:00 CRDT- 2003/01/29 04:00 PHST- 2003/01/29 04:00 [pubmed] PHST- 2003/05/07 05:00 [medline] PHST- 2003/01/29 04:00 [entrez] PST - ppublish SO - Shi Yan Sheng Wu Xue Bao. 2001 Sep;34(3):163-8.