Abstract
We developed Glycine max cv MiniMax (PI643148) that has a rapid life cycle, short stature and characteristic simple sequence repeat (SSR) markers that could make it useful for mutant screening, functional genomics, genetic mapping and other studies involving soybeans. We demonstrate that MiniMax is able to make somatic embryos (SEs) that rapidly develop into plantlets. Thus, the rapid cycling habit carries over into aspects of plant regeneration. Chimaeras (having transformed roots with untransformed aerial stocks) have been produced rapidly under non-axenic conditions using Agrobacterium rhizogenes-mediated transformation. Part of these experiments involved the engineering an enhanced green fluorescent protein (eGFP) reporter cassette outside the multi-cloning site of a plant expression vector, permitting non-invasive visual screening of the transformed roots. The rapid cycling growth habit of MiniMax, its ability to efficiently generate SEs and ability to be transformed should prove useful for basic aspects of G. max molecular and genetic research.
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Abbreviations
- MG:
-
Maturity group
- SCN:
-
Soybean cyst nematode
- SSR:
-
Simple sequence repeat
- GUS:
-
β-glucuronidase
- eGFP:
-
Enhanced green fluorescent protein
- FMV sgt:
-
Figwort mosaic virus sub-genomic transcript
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Acknowledgements
The authors thank Prakash Arelli, USDA-ARS-MSA, Crop Genetics and Production Research Unit, 605 Airways Blvd., Jackson, TN, 38301 for the H. glycines race studies in G. max cv MiniMax. The authors thank Hunter Beard for excellent technical support. We also thank Dr. Wayne Parrott (University of Georgia) for technical assistance during the development of the plant transformation procedures. This work was supported by the United Soybean Board under grant 5214. Mention of trade names or commercial products in this article is solely for the purpose of providing specific information and does not imply recommendation or endorsement by the United States Department of Agriculture.
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Klink, V.P., MacDonald, M.H., Martins, V.E. et al. MiniMax, a new diminutive Glycine max genotype with a rapid life cycle, embryogenic potential and transformation capabilities. Plant Cell Tiss Organ Cult 92, 183–195 (2008). https://doi.org/10.1007/s11240-007-9323-3
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DOI: https://doi.org/10.1007/s11240-007-9323-3