Genetic mapping of natural variation in a shade avoidance response: ELF3 is the candidate gene for a QTL in hypocotyl growth regulation

Autor: Marcelo J. Yanovsky, Javier Francisco Botto, Luciana Kasulin, Sabrina E. Sanchez, M. Paula Coluccio
Rok vydání: 2010
Předmět:
Candidate gene
Light
Arabidopsis thaliana
end of the day far-red light (EOD)
Physiology
Arabidopsis
ELF3 PROTEIN
ARABIDOPSIS
natural genetic variation
Plant Science
ARABIDOPSIS PROTEINS
HYPOCOTYL
Gene Expression Regulation
Plant
shade avoidance syndrome (SAS)
CHEMISTRY
TRANSCRIPTION FACTOR
ARABIDOPSIS PROTEIN
SEQUENCE ALIGNMENT
Genetics
QUANTITATIVE TRAIT LOCI
education.field_of_study
GENE EXPRESSION REGULATION
PLANT
SIGNAL TRANSDUCTION
Chromosome Mapping
NATURAL GENETIC VARIATION
SHADE AVOIDANCE SYNDROME (SAS)
ARABIDOPSIS
Research Papers
AMINO ACID SEQUENCE
Hypocotyl
QUANTITATIVE TRAIT LOCUS (QTL)
TRANSCRIPTION FACTORS
LIGHT
Signal Transduction
GENETICS
QUANTITATIVE TRAIT LOCUS
early flowering 3 (ELF3)
Molecular Sequence Data
Quantitative Trait Loci
Population
METABOLISM
Biology
Quantitative trait locus
quantitative trait locus (QTL)
Shade avoidance
Gene mapping
Genetic variation
RADIATION EXPOSURE
MOLECULAR SEQUENCE DATA
Amino Acid Sequence
Genetic variability
CHROMOSOME MAPPING
PHYSIOLOGY
education
Arabidopsis Proteins
MOLECULAR GENETICS
GENE EXPRESSION REGULATION
GROWTH
DEVELOPMENT AND AGING
fungi
ARABIDOPSIS THALIANA
EARLY FLOWERING 3 (ELF3)
CHROMOSOME MAP
biology.organism_classification
PLANT GROWTH
Sequence Alignment
Transcription Factors
END OF THE DAY FAR-RED LIGHT (EOD)
Zdroj: Journal of Experimental Botany
Vol.62, no.1
FAUBA Digital (UBA-FAUBA)
Universidad de Buenos Aires. Facultad de Agronomía
instacron:UBA-FAUBA
Vol. 62, no. 1
ISSN: 1460-2431
0022-0957
DOI: 10.1093/jxb/erq253
Popis: 167-176 When plants become shaded by neighbouring plants, they perceive a decrease in the red/far-red (R/FR) ratio of the light environment, which provides an early and unambiguous warning of the presence of competing vegetation. The mechanistic bases of the natural genetic variation in response to shade signals remain largely unknown. This study demonstrates that a wide range of genetic variation for hypocotyl elongation in response to an FR pulse at the end of day (EOD), a light signal that simulates natural shade, exists between Arabidopsis accessions. A quantitative trait locus (QTL) mapping analysis was done in the BayreuthxShahdara recombinant inbred line population. EODINDEX1 is the most significant QTL identified in response to EOD. The Shahdara alleles at EODINDEX1 caused a reduced response to shade as a consequence of an impaired hypocotyl inhibition under white light, and an accelerated leaf movement rhythm, which correlated positively with the pattern of circadian expression of clock genes such as PRR7 and PRR9. Genetic and quantitative complementation analyses demonstrated that ELF3 is the most likely candidate gene underlying natural variation at EODINDEX1. In conclusion, ELF3 is proposed as a component of the shade avoidance signalling pathway responsible for the phenotypic differences between Arabidopsis populations in relation to adaptation in a changing light environment.
Databáze: OpenAIRE
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