Ultrahigh-temperature ceramics(UHTCs)have a unique combination of high melting points,high strengths,and high chemical stabilities,which makes them unique materials for a wide range of ultrahigh-temperature(>2000&#...Ultrahigh-temperature ceramics(UHTCs)have a unique combination of high melting points,high strengths,and high chemical stabilities,which makes them unique materials for a wide range of ultrahigh-temperature(>2000°C)applications.Herein,we first report a novel highly porous dual-phase high-entropy UHTCs material composed of a high-entropy boride(HEB)phase and a high-entropy carbide(HEC)phase,which was fabricated via foam-gelcasting-freeze drying technology and high-temperature sintering with mixed borides and carbides as raw materials.The as-fabricated samples have a uniform pore structure and a firm skeleton that consists of random alternating distributions of HEB and HEC particles.The porous dual-phase high-entropy UHTCs samples have ultrahigh porosities of 96.4%–90.1%,low densities of 0.31–0.87 g/cm3,high strengths of 0.45–4.17 MPa and low thermal conductivities of 0.202–0.281 W/(m·K),as well as better oxidation resistance than single-phase HEC.The present results highlight the potential of as-prepared porous dual-phase high-entropy UHTCs as promising materials for ultrahigh-temperature thermal insulation applications.展开更多
Water-soluble protein(WSP)content determines soybean nutritional value and processing efficiency,yet its genetic and molecular regulation remains poorly understood.Here,we identified Glycine max gibberellic acid-stimu...Water-soluble protein(WSP)content determines soybean nutritional value and processing efficiency,yet its genetic and molecular regulation remains poorly understood.Here,we identified Glycine max gibberellic acid-stimulated Arabidopsis 12(GmGASA12),encoding a gibberellin-regulated protein,as a major quantitative trait locus(QTL)governing WSP,through genome-wide association studies across five environments.Knockout of GmGASA12 resulted in 28.7%higher WSP content,27.6%enlarged seed cells,and 20%yield increase,while overexpression suppressed these traits.Hormonal profiling revealed that GmGASA12 knockout elevates gibberellin,auxin,and abscisic acid but reduces cytokinin,driving cell expansion and protein body accumulation.GmGASA12 cooperatively regulates the biosynthesis ofβ-conglycinin and glycinin,the core storage proteins in soybean seeds,through its interaction with GmCG-6.Transcriptomics linked GmGASA12 to nitrogen metabolism and hormone signaling,with knockout upregulating amino acid transporters(GmAAP3/6/27)and storage protein genes(GmCG-1-6).Evolutionary analyses demonstrated strong selection for elite GmGASA12 haplotypes during domestication,with 94%of cultivars harboring favorable alleles.Our findings establish GmGASA12 as a molecular hub integrating hormonal dynamics and protein interaction to enhance soybean quality and yield,offering a pivotal target for breeding nutrient-dense varieties.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.U21A2063,U2441266,52372071,and 52302076)the International Partnership Program of the Chinese Academy of Sciences(Grant No.172GJHZ2022094FN)the LiaoNing Revitalization Talents Program(Grant No.XLYC2203090).
文摘Ultrahigh-temperature ceramics(UHTCs)have a unique combination of high melting points,high strengths,and high chemical stabilities,which makes them unique materials for a wide range of ultrahigh-temperature(>2000°C)applications.Herein,we first report a novel highly porous dual-phase high-entropy UHTCs material composed of a high-entropy boride(HEB)phase and a high-entropy carbide(HEC)phase,which was fabricated via foam-gelcasting-freeze drying technology and high-temperature sintering with mixed borides and carbides as raw materials.The as-fabricated samples have a uniform pore structure and a firm skeleton that consists of random alternating distributions of HEB and HEC particles.The porous dual-phase high-entropy UHTCs samples have ultrahigh porosities of 96.4%–90.1%,low densities of 0.31–0.87 g/cm3,high strengths of 0.45–4.17 MPa and low thermal conductivities of 0.202–0.281 W/(m·K),as well as better oxidation resistance than single-phase HEC.The present results highlight the potential of as-prepared porous dual-phase high-entropy UHTCs as promising materials for ultrahigh-temperature thermal insulation applications.
基金supported by the STI 2030-Major Projects(2023ZD04069)the National Natural Science Foundation of China(32201867 and 32272171)+2 种基金Key Scientific Research Projects of Colleges and Universities in Henan Province(24A210004)the Outstanding Youth Science Fund of Henan Province(242300421031)partly supported by the open funds of the State Key Laboratory of Crop Genetics&Germplasm Enhancement and Utilization(ZW202402).
文摘Water-soluble protein(WSP)content determines soybean nutritional value and processing efficiency,yet its genetic and molecular regulation remains poorly understood.Here,we identified Glycine max gibberellic acid-stimulated Arabidopsis 12(GmGASA12),encoding a gibberellin-regulated protein,as a major quantitative trait locus(QTL)governing WSP,through genome-wide association studies across five environments.Knockout of GmGASA12 resulted in 28.7%higher WSP content,27.6%enlarged seed cells,and 20%yield increase,while overexpression suppressed these traits.Hormonal profiling revealed that GmGASA12 knockout elevates gibberellin,auxin,and abscisic acid but reduces cytokinin,driving cell expansion and protein body accumulation.GmGASA12 cooperatively regulates the biosynthesis ofβ-conglycinin and glycinin,the core storage proteins in soybean seeds,through its interaction with GmCG-6.Transcriptomics linked GmGASA12 to nitrogen metabolism and hormone signaling,with knockout upregulating amino acid transporters(GmAAP3/6/27)and storage protein genes(GmCG-1-6).Evolutionary analyses demonstrated strong selection for elite GmGASA12 haplotypes during domestication,with 94%of cultivars harboring favorable alleles.Our findings establish GmGASA12 as a molecular hub integrating hormonal dynamics and protein interaction to enhance soybean quality and yield,offering a pivotal target for breeding nutrient-dense varieties.
