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Chromosomal loci important for cotyledon opening under UV-B in Arabidopsis thaliana.

ABSTRACT:

Background

Understanding of the genetic architecture of plant UV-B responses allows extensive targeted testing of candidate genes or regions, along with combinations of those genes, for placement in metabolic or signal transduction pathways.

Results

Composite interval mapping and single-marker analysis methods were used to identify significant loci for cotyledon opening under UV-B in four sets of recombinant inbred lines. In addition, loci important for canalization (stability) of cotyledon opening were detected in two mapping populations. One candidate locus contained the gene HY5. Mutant analysis demonstrated that HY5 was required for UV-B-specific cotyledon opening.

Conclusions

Structured mapping populations provide key information on the degree of complexity in the genetic control of UV-B-induced cotyledon opening in Arabidopsis. The loci identified using quantitative trait analysis methods are useful for follow-up testing of candidate genes.

SUBMITTER: Conte M

PROVIDER: S-EPMC3095277 | biostudies-literature | 2010 Jun

REPOSITORIES: biostudies-literature

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Chromosomal loci important for cotyledon opening under UV-B in Arabidopsis thaliana.

Conte Mariana M de Simone Silvia S Simmons Susan J SJ Ballaré Carlos L CL Stapleton Ann E AE

BMC plant biology 20100616

<h4>Background</h4>Understanding of the genetic architecture of plant UV-B responses allows extensive targeted testing of candidate genes or regions, along with combinations of those genes, for placement in metabolic or signal transduction pathways.<h4>Results</h4>Composite interval mapping and single-marker analysis methods were used to identify significant loci for cotyledon opening under UV-B in four sets of recombinant inbred lines. In addition, loci important for canalization (stability) of ...[more]

PMID: 20565708

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