Abstract
Somatic hybridization between bread wheat and tall wheatgrass (Agropyron elongatum) has generated fertile introgression progenies with novel combinations of high molecular weight glutenin subunits (HMW-GS). Most of these novel HMW-GS alleles were stably inherited. Sixteen HMW-GS sequences were PCR amplified from three introgression progeny lines and sequenced. The alignment of these sequences indicated that five, probably derived from point mutations of the parental genes, whereas eight likely represent the product of replication slippage. Three Glu-1Ay sequences appear to have lost the transposon presented in the parental gene. Two subunits carry an additional cysteine residue, which may be favorable to the quality of end-use product. We demonstrate that novel HMW-GS alleles can be rapidly generated via asymmetric somatic hybridization.
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Acknowledgments
This research was supported by the National Basic Research 973 Program of China, No. 2009CB118300, National Natural Science Foundation of China No. 30871320 and National 863 High Technology Research and Development Project 2006AA100102.
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Heng Liu and Shuwei Liu have contributed equally to the work.
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Liu, H., Liu, S. & **a, G. Generation of high frequency of novel alleles of the high molecular weight glutenin in somatic hybridization between bread wheat and tall wheatgrass. Theor Appl Genet 118, 1193–1198 (2009). https://doi.org/10.1007/s00122-009-0973-x
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DOI: https://doi.org/10.1007/s00122-009-0973-x