Heterologous Hybridization of Cotton Microarrays with Velvetleaf (Abutilon Theophrasti) Reveals Physiological Responses Due to Corn Competition

Microarray analysis was used to identify changes in gene expression in velvetleaf that result from competition with corn. The plants were grown in field plots under adequate N (addition of 220 kg N ha−1) to minimize stress and sampled at the V6 growth stage of corn (late June). Leaf area, dry weight...

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Bibliographic Details
Published in:Weed science 2007-11, Vol.55 (6), p.546-557
Main Authors: Horvath, David P, Llewellyn, Danny, Clay, Sharon A
Format: Article
Language:English
Subjects:
Abutilon theophrasti
Biological and medical sciences
broadleaf weeds
Cell division
Cellular metabolism
Corn
cotton
crop-weed competition
dry matter accumulation
fiber crops
Fundamental and applied biological sciences. Psychology
gene expression
gene expression regulation
Genes. Genome
genomics
Gossypium hirsutum
leaf area
microarray technology
Molecular and cellular biology
Molecular genetics
nitrogen
nucleic acid hybridization
Nucleic acids
Oxidative stress
Parasitic plants. Weeds
phosphorus
Photosynthesis
PHYSIOLOGY, CHEMISTRY, AND BIOCHEMISTRY
Phytopathology. Animal pests. Plant and forest protection
plant nutrition
Plants
Protein metabolism
Ribosomal proteins
Signal transduction
Weed competition
Weeds
Zea mays
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Summary:Microarray analysis was used to identify changes in gene expression in velvetleaf that result from competition with corn. The plants were grown in field plots under adequate N (addition of 220 kg N ha−1) to minimize stress and sampled at the V6 growth stage of corn (late June). Leaf area, dry weight, and N and P concentration were similar in velvetleaf plants grown alone or with corn. Competition, however, did influence velvetleaf gene expression. Genes involved in carbon utilization, photosynthesis, red light signaling, and cell division were preferentially expressed when velvetleaf was grown in competition with corn. A less clear picture of the physiological impact of growth in monoculture was provided by the data. However, several genes involved in secondary metabolism and a gene preferentially expressed in response to phosphate availability were induced. No differences were observed in genes responsive to water stress or sequestering/transporting micronutrients. Nomenclature: Velvetleaf, Abutilon theophrasti L. ABUTH; corn, Zea mays L.; cotton, Gossypium hirsutum L.
ISSN:0043-1745
1550-2759
DOI:10.1614/WS-07-008.1