南澳大利亚蓝燕麦草中转基因扩增型抗草甘膦性的非孟德尔遗传。
Non-Mendelian inheritance of gene amplification-based resistance to glyphosate in Hordeum glaucum (barley grass) from South Australia.
机构信息
School of Agriculture, University of Adelaide, Glen Osmond, Australia.
出版信息
Pest Manag Sci. 2021 Oct;77(10):4298-4302. doi: 10.1002/ps.6518. Epub 2021 Jul 1.
BACKGROUND
Hordeum glaucum Steud. is an important grass weed species in South Australia that has evolved resistance to glyphosate. This study investigated the mode of inheritance of glyphosate resistance in this species.
RESULTS
Hand-pollination of glyphosate susceptible and resistant populations generated two F individuals, selfed to yield F progenies. In dose-response experiments, the F progenies showed intermediate response between the two parent populations. High variation in EPSPS gene copies was observed among F individuals, with some individuals possessing more gene copies than the resistant parent population. No evidence of a Mendelian single-gene pattern of inheritance was observed.
CONCLUSION
Inheritance of gene amplification in H. glaucum is non-Mendelian. © 2021 Society of Chemical Industry.
背景
硬稃野大麦是南澳大利亚州一种重要的禾本科杂草，已对草甘膦产生抗性。本研究调查了该物种对草甘膦抗性的遗传模式。
结果
对草甘膦敏感和抗性种群进行人工授粉，产生了两个 F1 个体，自交产生 F2 后代。在剂量反应实验中，F2 后代表现出介于两个亲本种群之间的中间反应。F1 个体之间观察到 EPSPS 基因拷贝数存在高度变异，一些个体的基因拷贝数超过了抗性亲本种群。未观察到孟德尔单基因遗传模式的证据。
结论
硬稃野大麦中基因扩增的遗传是非孟德尔的。 © 2021 化学工业协会。
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