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Agronomy 2014, 4(4), 462-469; doi:10.3390/agronomy4040462

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

1
Department of Biology, University of Wisconsin-Stevens Point, Stevens Point, WI 54481, USA
2
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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Abstract

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
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

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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