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
Early mammalian embryogenesis represents a central question in life sciences,yet its molecular regulation has long been inferred primarily from transcriptomic and translatomic analyses.Recently,a study by Zhu et al.(2...Early mammalian embryogenesis represents a central question in life sciences,yet its molecular regulation has long been inferred primarily from transcriptomic and translatomic analyses.Recently,a study by Zhu et al.(2025)based on low-input proteomic approaches systematically charted protein dynamics from oocytes to blastocysts in both mice and humans,further interrogating molecular signatures of developmentally compromised human embryos at the single-embryo level.This work not only substantially expands proteome coverage during early development,but also reveals a pervasive uncoupling between transcriptional activation,translational initiation,and protein accumulation.These findings provide new perspectives on the relationship between zygotic genome activation(ZGA)and lineage specification.This paper discussed the central role of low-input proteomics in this study,highlighted its implications for reshaping current paradigms of early embryonic development,and considered its potential applications across broader areas of biomedical research.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Early mammalian embryogenesis represents a central question in life sciences,yet its molecular regulation has long been inferred primarily from transcriptomic and translatomic analyses.Recently,a study by Zhu et al.(2025)based on low-input proteomic approaches systematically charted protein dynamics from oocytes to blastocysts in both mice and humans,further interrogating molecular signatures of developmentally compromised human embryos at the single-embryo level.This work not only substantially expands proteome coverage during early development,but also reveals a pervasive uncoupling between transcriptional activation,translational initiation,and protein accumulation.These findings provide new perspectives on the relationship between zygotic genome activation(ZGA)and lineage specification.This paper discussed the central role of low-input proteomics in this study,highlighted its implications for reshaping current paradigms of early embryonic development,and considered its potential applications across broader areas of biomedical research.
