Background Cotton is an industrial crop renowned for its multifaceted applications in the textiles,pharmaceuticals,and biofuel industries.Plant regeneration through somatic embryogenesis(SE)plays a crucial role in the...Background Cotton is an industrial crop renowned for its multifaceted applications in the textiles,pharmaceuticals,and biofuel industries.Plant regeneration through somatic embryogenesis(SE)plays a crucial role in the genetic improvement of cotton.There is a strong correlation between SE and zygotic embryogenesis(ZE)in plants.Furthermore,the strategy of ectopic expression of cotton genes into the model plant Arabidopsis has been a widely accepted approach for functional study.Result Based on previous spatial transcriptomics of cotton somatic embryos,two genes,Gh HAT5 and Gh CRK29,were identified.They are highly expressed in cotyledon and epidermal cells of cotton cotyledonary embryos,respectively.In this study,Gh HAT5 and Gh CRK29 were ectopically expressed in Arabidopsis to investigate their functions.The result showed that in Arabidopsis zygotic embryos,the overexpression of Gh HAT5 promoted the development of apical embryonic upper-tier cells and embryonic cotyledon,while the overexpression of Gh CRK29 promoted the development of apical embryonic lower-tier cells and embryonic radicle.Given the similarities between somatic and zygotic embryogenesis,these findings suggest that Gh HAT5 and Gh CRK29 are involved in cotton SE.We also speculate that these genes may promote the expression of the Arabidopsis endogenous gene At SCR,which is crucial for embryonic development.Conclusion These results revealed that Gh HAT5 and Gh CRK29 regulate embryonic development and are essential in advancing our understanding of cotton SE and facilitating targeted genetic manipulation strategies to improve industrial crop traits and agricultural sustainability.展开更多
为明确转cry2Ab4基因抗虫棉(L280)与转cry2Ab4、vip3Aa11基因双价抗虫棉(L282)在棉花基因组中的插入位点。通过融合引物与巢式聚合酶链式反应(Fusion primer and nested integrated PCR,FPNI-PCR)的方法获取T-DNA的侧翼序列。分析表明,...为明确转cry2Ab4基因抗虫棉(L280)与转cry2Ab4、vip3Aa11基因双价抗虫棉(L282)在棉花基因组中的插入位点。通过融合引物与巢式聚合酶链式反应(Fusion primer and nested integrated PCR,FPNI-PCR)的方法获取T-DNA的侧翼序列。分析表明,它们分别位于棉花D13染色体61309969-61309997 bp区间和D11染色体11069019-11069039 bp区间。同时,为了获得侧翼序列,分别在棉花基因组和T-DNA上设计特异性引物进行PCR扩增,确认2种转基因抗虫棉中T-DNA在基因组上的位置。通过FPNI-PCR方法成功地分离到了转基因抗虫棉的侧翼序列,明确了T-DNA在2种抗虫棉基因组中的插入位置,也为转基因抗虫棉的后续研究及安全评价提供了重要的技术支持。展开更多
基金supported by the National Key Research and Development Program of China(No.2022YFD1200300)。
文摘Background Cotton is an industrial crop renowned for its multifaceted applications in the textiles,pharmaceuticals,and biofuel industries.Plant regeneration through somatic embryogenesis(SE)plays a crucial role in the genetic improvement of cotton.There is a strong correlation between SE and zygotic embryogenesis(ZE)in plants.Furthermore,the strategy of ectopic expression of cotton genes into the model plant Arabidopsis has been a widely accepted approach for functional study.Result Based on previous spatial transcriptomics of cotton somatic embryos,two genes,Gh HAT5 and Gh CRK29,were identified.They are highly expressed in cotyledon and epidermal cells of cotton cotyledonary embryos,respectively.In this study,Gh HAT5 and Gh CRK29 were ectopically expressed in Arabidopsis to investigate their functions.The result showed that in Arabidopsis zygotic embryos,the overexpression of Gh HAT5 promoted the development of apical embryonic upper-tier cells and embryonic cotyledon,while the overexpression of Gh CRK29 promoted the development of apical embryonic lower-tier cells and embryonic radicle.Given the similarities between somatic and zygotic embryogenesis,these findings suggest that Gh HAT5 and Gh CRK29 are involved in cotton SE.We also speculate that these genes may promote the expression of the Arabidopsis endogenous gene At SCR,which is crucial for embryonic development.Conclusion These results revealed that Gh HAT5 and Gh CRK29 regulate embryonic development and are essential in advancing our understanding of cotton SE and facilitating targeted genetic manipulation strategies to improve industrial crop traits and agricultural sustainability.
文摘为明确转cry2Ab4基因抗虫棉(L280)与转cry2Ab4、vip3Aa11基因双价抗虫棉(L282)在棉花基因组中的插入位点。通过融合引物与巢式聚合酶链式反应(Fusion primer and nested integrated PCR,FPNI-PCR)的方法获取T-DNA的侧翼序列。分析表明,它们分别位于棉花D13染色体61309969-61309997 bp区间和D11染色体11069019-11069039 bp区间。同时,为了获得侧翼序列,分别在棉花基因组和T-DNA上设计特异性引物进行PCR扩增,确认2种转基因抗虫棉中T-DNA在基因组上的位置。通过FPNI-PCR方法成功地分离到了转基因抗虫棉的侧翼序列,明确了T-DNA在2种抗虫棉基因组中的插入位置,也为转基因抗虫棉的后续研究及安全评价提供了重要的技术支持。
