| |
| Author(s): | Van de Water, Peter K.;
Watrud, Lidia S.;
Lee, E. Henry;
Burdick, Connie;
King, George A. |
|---|
| Author Affiliation: | Van de Water, Watrud, Lee and Burdick: National Health and Environmental Effects Research Laboratory, United States Environmental Protection Agency Office of Research and Development, Corvallis, Oregon; King: Dynamac Corporation, Corvallis, Oregon |
|---|
| Title: | Long-distance GM pollen movement of creeping bentgrass using modeled wind trajectory analysis |
|---|
| Source: | Ecological Applications: A publication of the Ecological Society of America. Vol. 17, No. 4, June 2007, p. 1244-1256. |
|---|
| Publishing Information: | Washington, DC: Ecological Society of America |
|---|
| # of Pages: | 13 |
|---|
| Keywords: | TIC Keywords: Pollen; Wind; Agrostis stolonifera; Agrostis gigantea; Gene flow; Pollination; Genetic markers; Genetic engineering; Genetics
|
|---|
| Abstract/Contents: | "The importance of understanding the role of atmospheric conditions in pollen dispersal has grown in recent years with increased field-testing of genetically modified (GM) crop plants. An atmospheric model was used to characterize wind trajectories at 10 m and 100 m above GM pollen source fields located within a 4452-ha "control" area north of Madras, Oregon, USA, designated by the Oregon Department of Agriculture (ODA). The area was used in 2003 for the growth of GM creeping bentgrass (Agrostis stolonifera) engineered to be resistant to glyphosate herbicide. The presence of the GM gene (CP4 EPSPS) provided a distinct selectable marker for pollen-mediated gene flow to sentinel and resident Agrostis spp. plants. Linkage of GM gene presence with wind flow characteristics over the "control" area became essential to understand timing and processes leading to long-distance transport of this pollen. Wind trajectories showed a general pattern of northwest to southeast air movement. Trajectory travel distances calculated hourly from 06:00 hours to 15:00 hours during the 2003 pollination period (15 June-15 July) showed movement up to 15 km from the "control" area's center by the first hour. Maximum travel distances increased to 40 and 55 km after two and three hours from release, respectively. Calculated wind trajectory positions corresponded with observed long-distance pollen-mediated gene flow in the seedlings of sentinel and resident plants. The highest correlations were found during the late morning hours. Back-calculated wind trajectories from sentinel and resident locations with GM-gene-positive progeny suggested that most successful fertilizations occurred in the direction of prevailing winds during late June 2003. The occurrence of positive progeny from sentinel plants, upwind of the "control" area during this first period, indicated the additional influence of local topography on pollen dispersal." |
|---|
| Language: | English |
|---|
| References: | 24 |
|---|
| Note: | Figures
Tables
Graphs |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Van de Water, P. K., L. S. Watrud, E. H. Lee, C. Burdick, and G. A. King. 2007. Long-distance GM pollen movement of creeping bentgrass using modeled wind trajectory analysis. Ecol. Appl. 17(4):p. 1244-1256. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=135466 |
| If there are problems with this record, send us feedback about record 135466. |
| Choices for finding the above item: |
|---|
| 
MSU catalog number: b2470039a |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
