Mutations in soybean microsomal omega-3 fatty acid desaturase genes reduce linolenic acid concentration in soybean seeds
One major locus (Fan) and several minor loci have been shown to contribute to the linolenic acid level in soybean [Glycine max (L.) Merr.] seeds. The Fan gene encodes a microsomal omega-3 fatty acid desaturase (Arabidopsis FAD3 homolog), and soybeans contain three FAD3 genes. The objective of this w...
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Published in | Crop science Vol. 45; no. 5; pp. 1830 - 1836 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Madison, WI
The Crop Science Society of America, Inc
01.09.2005
Crop Science Society of America American Society of Agronomy |
Subjects | |
Online Access | Get full text |
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Summary: | One major locus (Fan) and several minor loci have been shown to contribute to the linolenic acid level in soybean [Glycine max (L.) Merr.] seeds. The Fan gene encodes a microsomal omega-3 fatty acid desaturase (Arabidopsis FAD3 homolog), and soybeans contain three FAD3 genes. The objective of this work was to characterize candidate soybean FAD3 genes from low linolenic acid soybean lines and associate those alleles with the trait. Mutations in two of the three soybean FAD3 genes were identified, and genotypes with the mutant alleles conferred a reduction of over two thirds of the linolenic acid present in the seed. The two mutant genes contributed unequally but additively to the phenotype. The results demonstrated that the mutant genotype can be identified with mutation-specific molecular markers in the F2 generation, and the low linolenic acid trait will be stably inherited in subsequent generations. |
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Bibliography: | http://hdl.handle.net/10113/3095 Contribution of the Missouri Agric. Exp. Stn. Mention of a trademark, vendor, or proprietary product does not constitute a guarantee or warranty of the product by the USDA or the University of Missouri and does not imply its approval to the exclusion of other products or vendors that may also be suitable. |
ISSN: | 0011-183X 1435-0653 |
DOI: | 10.2135/cropsci2004.0632 |