Journal of Heredity Advance Access originally published online on July 17, 2009
Journal of Heredity 2009 100(5):565-570; doi:10.1093/jhered/esp054
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Original Articles |
The Male Sterility Locus ms3 Is Present in a Fertility Controlling Gene Cluster in Soybean
From the Department of Agronomy, Iowa State University, Ames, IA 50011-1010 (Cervantes-Martinez and Xu); the Department of Biology, University of Wisconsin-Stevens Point, Stevens Point, WI 54481 (Sandhu); the Dairyland Seed Co., Inc., Otterbein, IN 47970 (Ortiz-Pérez); the Department of Crop Science, Obihiro University of Agriculture and Veterinary Medicine, Inada, Obihiro, 080-7555 Hokkaido, Japan (Kato); the Department of Genetics, Development and Cell Biology, and Microscopy and NanoImaging Facility, Iowa State University, Ames, IA 50011-1020 (Horner); and the USDA-ARS-CICGR and Department of Agronomy, Iowa State University, Ames, IA 50011-1010 (Palmer)
Address correspondence to Reid G. Palmer at the address above, or e-mail: reid.palmer{at}ars.usda.gov.
Soybean [Glycine max (L.) Merr.] is self-pollinated. To produce large quantities of hybrid seed, insect-mediated cross-pollination is necessary. An efficient nuclear male-sterile system for hybrid seed production would benefit from molecular and/or phenotypic markers linked to male fertility/sterility loci to facilitate early identification of phenotypes. Nuclear male-sterile, female-fertile ms3 mutant is a single recessive gene and displays high outcrossed seed set with pollinators. Our objective was to map the ms3 locus. A segregating population of 150 F2 plants from Minsoy (PI 27890) x T284H, Ms3ms3 (A00-68), was screened with 231 simple sequence repeat markers. The ms3 locus mapped to molecular linkage group (MLG) D1b (Gm02) and is flanked by markers Satt157 and Satt542, with a distance of 3.7 and 12.3 cM, respectively. Female-partial sterile-1 (Fsp1) and the Midwest Oilseed male-sterile (msMOS) mutants previously were located on MLG D1b. msMOS and Fsp1 are independent genes located very close to each other. All 3 genes are located in close proximity of Satt157. We believe that this is the first report of clustering of fertility-related genes in plants. Characterization of these closely linked genes may help in understanding the evolutionary relationship among them.
Key Words: Fsp1 gene cluster Glycine max male sterility ms3 mutant msMOS
Corresponding Editor: Michelle Graham
Received February 5, 2009
Revised April 28, 2009
Accepted June 22, 2009