Physiological Response of Maize Grown with Velvetleaf using Microarray Analysis

Authors

Sharon A. Clay, South Dakota State UniversityFollow
David Horvath, USDA-ARS, Fargo, North DakotaFollow
Robert Gulden, University of Guelph

Document Type

Abstract

Publication Date

11-2006

Abstract

Weeds compete with crop plants for light, water, and nutrients. However, the specific mechanisms for weed-crop interactions have not been well elucidated due to a dearth of tools to assess the physiological state of the plant. Microarray analysis was used to identify changes in gene expression in maize leaves collected from plants at the V11-14 growth stage that resulted from competition with velvetleaf. The plants were grown in field plots under adequate N (addition of 220 kg N ha^-1) and irrigation. Consequently only differences due to light competition and perhaps allelopathic stress were anticipated. N amounts were 7% less and δ¹⁵N values were greater in maize leaves competing with velvetleaf. Leaf ¹³C discrimination also was affected by velvetleaf competition indicating differences in ¹³CO₂ fixation. Maize growing with velvetleaf expressed 253 of the 19,200 scanned genes differently (false discovery rate (q value)

Publication Title

Proceedings of the ASA-CSSA-SSSA, 2006

Recommended Citation

Clay, Sharon A.; Horvath, David; and Gulden, Robert, "Physiological Response of Maize Grown with Velvetleaf using Microarray Analysis" (2006). Agronomy, Horticulture and Plant Science Faculty Publications. 151.
https://openprairie.sdstate.edu/plant_faculty_pubs/151