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Agronomy 2014, 4(4), 462-469;

Candidate Gene Identification for a Lethal Chlorophyll-Deficient Mutant in Soybean

Department of Biology, University of Wisconsin-Stevens Point, Stevens Point, WI 54481, USA
Department of Agronomy, Iowa State University, Ames, IA 50011-1010, USA
Author to whom correspondence should be addressed.
Received: 15 September 2014 / Revised: 22 October 2014 / Accepted: 27 October 2014 / Published: 31 October 2014
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Chlorophyll-deficient mutants have been studied persistently to understand genetic mechanisms controlling metabolic pathways. A spontaneous chlorophyll-deficient lethal mutant was observed in self-pollinated progeny of a soybean cultivar “BSR 101”. Observed segregation patterns indicated single-gene recessive inheritance for this lethal-yellow mutant. The objectives of this investigation were to develop a genetic linkage map of the region containing the lethal-yellow (YL_PR350) gene and identify putative candidate genes for this locus. The YL_PR350 gene was mapped to chromosome 15 and is flanked by BARCSOYSSR_15_1591 and BARCSOYSSR_15_1597. This region physically spans ~153 kb and there are 14 predicted genes that lie in this region. The predicted gene Glyma.15g275900 is an excellent candidate for the YL_PR350 gene as it is homologous to an Arabidopsis gene, At3g08010, which codes for a chloroplast-localized protein (ATAB2) involved in the biogenesis of Photosystem I and II. This thylakoid membrane protein is crucial for photosynthesis in Arabidopsis. Future characterization of the candidate gene may enhance our knowledge about photosynthesis, a complex metabolic process critical for sustainability of plants. View Full-Text
Keywords: lethal-yellow; chlorophyll-deficient; genetic map; soybean lethal-yellow; chlorophyll-deficient; genetic map; soybean

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Reed, S.; Atkinson, T.; Gorecki, C.; Espinosa, K.; Przybylski, S.; Goggi, A.S.; Palmer, R.G.; Sandhu, D. Candidate Gene Identification for a Lethal Chlorophyll-Deficient Mutant in Soybean. Agronomy 2014, 4, 462-469.

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