FLOWERING LOCUS T(FT)can promote early flowering in annual species,but such role has not been well demonstrated in woody species.We produced self and reciprocal grafts involving non-transgenic blueberry(NT)and transge...FLOWERING LOCUS T(FT)can promote early flowering in annual species,but such role has not been well demonstrated in woody species.We produced self and reciprocal grafts involving non-transgenic blueberry(NT)and transgenic blueberry(T)carrying a 35S-driven blueberry FT(VcFT-OX).We demonstrated that the transgenic VcFT-OX rootstock promoted flowering of non-transgenic blueberry scions in the NT(scion):T(rootstock)grafts.We further analyzed RNASeq profiles and six groups of phytohormones in both NT:T and NT:NT plants.We observed content changes of several hormone metabolites,in a descending order,in the transgenic NT:T,non-transgenic NT:T,and non-transgenic NT:NT leaves.By comparing differential expression transcripts(DETs)of these tissues in relative to their control,we found that the non-transgenic NT:T leaves had many DETs shared with the transgenic NT:T leaves,but very few with the transgenic NT:T roots.Interestingly,a number of these shared DETs belong to hormone pathway genes,concurring with the content changes of hormone metabolites in both transgenic and non-transgenic leaves of the NT:T plants.These results suggest that phytohormones induced by VcFT-OX in the transgenic leaves might serve as part of the signals that resulted in early flowering in both transgenic plants and the non-transgenic NT:T scions.展开更多
The molecular mechanism underlying dormancy release and the induction of flowering remains poorly understood in woody plants.Mu-legacy is a valuable blueberry mutant,in which a transgene insertion caused increased exp...The molecular mechanism underlying dormancy release and the induction of flowering remains poorly understood in woody plants.Mu-legacy is a valuable blueberry mutant,in which a transgene insertion caused increased expression of a RESPONSE REGULATOR 2-like gene(VcRR2).Mu-legacy plants,compared with nontransgenic‘Legacy’plants,show dwarfing,promotion of flower bud formation,and can flower under nonchilling conditions.We conducted transcriptomic comparisons in leaves,chilled and nonchilled flowering buds,and late-pink buds,and analyzed a total of 41 metabolites of six groups of hormones in leaf tissues of both Mu-legacy and‘Legacy’plants.These analyses uncovered that increased VcRR2 expression promotes the expression of a homolog of Arabidopsis thaliana ENTCOPALYL DIPHOSPHATE SYNTHETASE 1(VcGA1),which induces new homeostasis of hormones,including increased gibberellin 4(GA4)levels in Mu-legacy leaves.Consequently,increased expression of VcRR2 and VcGA1,which function in cytokinin responses and gibberellin synthesis,respectively,initiated the reduction in plant height and the enhancement of flower bud formation of the Mu-legacy plants through interactions of multiple approaches.In nonchilled flower buds,29 differentially expressed transcripts of 17 genes of five groups of hormones were identified in transcriptome comparisons between Mu-legacy and‘Legacy’plants,of which 22 were chilling responsive.Thus,these analyses suggest that increased expression of VcRR2 was collectively responsible for promoting flower bud formation in highbush blueberry under nonchilling conditions.We report here for the first time the importance of VcRR2 to induce a suite of downstream hormones that promote flowering in woody plants.展开更多
There were few studies of cumulative live birth rates(CLBRs) based on multicenter reproductive clinical data from the general Chinese population.Here we report a retrospective cohort study,including 14 311 women with1...There were few studies of cumulative live birth rates(CLBRs) based on multicenter reproductive clinical data from the general Chinese population.Here we report a retrospective cohort study,including 14 311 women with17 315 cycles,in three reproductive centers to evaluate two estimated parameters of CLBRs with multiple transfer cycles of in vitro fertilization(IVF)/intracytoplasmic sperm injection(ICSI) in a Chinese population.We found that CLBRs were related to female age and endometrial thickness.By the fourth transfer cycle,the conservative and optimal estimates of CLBRs were 52.95% and 77.30% in women under 30 years of age,and 18.17% and26.51% in those 37 years of age or older,respectively.The two estimates were 44.70% and 63.15% in women with endometrial thickness more than 7 mm,and 32.05% and 46.18% in those with less than 7 mm,respectively.In addition,body mass index(BMI),duration of infertility,and infertility diagnoses may also be related to CLBRs on certain conditions.The findings from this study on CLBRs after multiple transfer cycles of IVF/ICSI treatment on different conditions in the Chinese population should be beneficial to both infertile couples and clinicians.展开更多
Homogeneous and dispersed Y3 Al5 O12（yttrium aluminum garnet,YAG） nanopowders were synthesized via a homogeneous co-precipitation method from the mixed solutions of yttrium nitrate,aluminum nitrate and a small amoun...Homogeneous and dispersed Y3 Al5 O12（yttrium aluminum garnet,YAG） nanopowders were synthesized via a homogeneous co-precipitation method from the mixed solutions of yttrium nitrate,aluminum nitrate and a small amount of ammonium sulfate using hot urea as the precipitant.The method has the superiorities that co-precipitation of cations is ensured and continuous decomposition of the hot urea is achieved to obtain the narrow size distribution particles.The addition of small amount of ammonium sulfate surfactant,although has no influence on YAG garnet phase formation,has significant effect on dispersion,particles distribution and sinterability of the resultant YAG and Yb：YAG powders.Compared with the undoped sample,the green body of Yb：YAG doped with ammonium sulfate has higher total shrinkage,linear shrinkage rate and relative density through sintering at 1600 ℃.The resultant Yb：YAG powders can be sintered into transparent ceramics at 1700 ℃ through vacuum sintering.The influence of the sulfate ions on characteristics of the resultant powders was thoroughly studied.展开更多
Digital geological mapping fundamentally broke through the traditional working pattern,successfully carried out the geological mapping digitalization.By using the RGMAP system to field digital geological mapping,the a...Digital geological mapping fundamentally broke through the traditional working pattern,successfully carried out the geological mapping digitalization.By using the RGMAP system to field digital geological mapping,the authors summarized the method of work and the work flow of the RGMAPGIS during the field geological survey.First,we prepared material,set up the PRB gallery,then put the geographic base map under the background maplayer and organizing the field hand map,forming the field factual datum map.At last,the geological space database is formed.展开更多
The impact of mother-infant microbiota on neurodevelopment is an area of interest,but longitudinal studies are scarce.Using a cohort of 520 families from the Jiangsu birth cohort in China,we reveal that the maternal g...The impact of mother-infant microbiota on neurodevelopment is an area of interest,but longitudinal studies are scarce.Using a cohort of 520 families from the Jiangsu birth cohort in China,we reveal that the maternal gut microbiota during early pregnancy play a substantial role,accounting for 3.34%of the variance in offspring neurodevelopmental scores.This contribution is notably higher than the 1.24%attributed to the infants’own microbiota at 1 year of age,underscoring the significant influence of maternal gut health on early child development.Remarkably,an elevation in maternal Bifidobacterium pseudocatenulatum is linked to decreased cognitive scores,whereas an enrichment of Bifidobacterium longum at 1 year of age is associated with higher cognitive scores.Furthermore,we find that maternal B.pseudocatenulatum is linked to the heterolactic fermentation metabolic pathway,while infant B.longum is associated with the Bifidobacterium shunt pathway.In summary,our analysis implies that maternal and infant gut microbiota play a distinct role in neurodevelopment,suggesting potential strategies for improving neurodevelopmental outcomes during early pregnancy or infant development by targeting gut microbiota composition.展开更多
文摘FLOWERING LOCUS T(FT)can promote early flowering in annual species,but such role has not been well demonstrated in woody species.We produced self and reciprocal grafts involving non-transgenic blueberry(NT)and transgenic blueberry(T)carrying a 35S-driven blueberry FT(VcFT-OX).We demonstrated that the transgenic VcFT-OX rootstock promoted flowering of non-transgenic blueberry scions in the NT(scion):T(rootstock)grafts.We further analyzed RNASeq profiles and six groups of phytohormones in both NT:T and NT:NT plants.We observed content changes of several hormone metabolites,in a descending order,in the transgenic NT:T,non-transgenic NT:T,and non-transgenic NT:NT leaves.By comparing differential expression transcripts(DETs)of these tissues in relative to their control,we found that the non-transgenic NT:T leaves had many DETs shared with the transgenic NT:T leaves,but very few with the transgenic NT:T roots.Interestingly,a number of these shared DETs belong to hormone pathway genes,concurring with the content changes of hormone metabolites in both transgenic and non-transgenic leaves of the NT:T plants.These results suggest that phytohormones induced by VcFT-OX in the transgenic leaves might serve as part of the signals that resulted in early flowering in both transgenic plants and the non-transgenic NT:T scions.
基金supported by AgBioResearch of Michigan State University(http://www.canr.msu.edu/research/agbioresearch/)and USDA-NIFA AFRI 1015241 to P.P.E.and G.S.
文摘The molecular mechanism underlying dormancy release and the induction of flowering remains poorly understood in woody plants.Mu-legacy is a valuable blueberry mutant,in which a transgene insertion caused increased expression of a RESPONSE REGULATOR 2-like gene(VcRR2).Mu-legacy plants,compared with nontransgenic‘Legacy’plants,show dwarfing,promotion of flower bud formation,and can flower under nonchilling conditions.We conducted transcriptomic comparisons in leaves,chilled and nonchilled flowering buds,and late-pink buds,and analyzed a total of 41 metabolites of six groups of hormones in leaf tissues of both Mu-legacy and‘Legacy’plants.These analyses uncovered that increased VcRR2 expression promotes the expression of a homolog of Arabidopsis thaliana ENTCOPALYL DIPHOSPHATE SYNTHETASE 1(VcGA1),which induces new homeostasis of hormones,including increased gibberellin 4(GA4)levels in Mu-legacy leaves.Consequently,increased expression of VcRR2 and VcGA1,which function in cytokinin responses and gibberellin synthesis,respectively,initiated the reduction in plant height and the enhancement of flower bud formation of the Mu-legacy plants through interactions of multiple approaches.In nonchilled flower buds,29 differentially expressed transcripts of 17 genes of five groups of hormones were identified in transcriptome comparisons between Mu-legacy and‘Legacy’plants,of which 22 were chilling responsive.Thus,these analyses suggest that increased expression of VcRR2 was collectively responsible for promoting flower bud formation in highbush blueberry under nonchilling conditions.We report here for the first time the importance of VcRR2 to induce a suite of downstream hormones that promote flowering in woody plants.
基金supported by National Key Research&Development Program(Grant No.2016YFC1000200,No.2016YFC1000204,and No.2018YFC1004200)the State Key Program of National Natural Science of China(Grant No.31530047)+2 种基金National Natural Science Foundation of China(Grant No.81602927)Innovation Fund of State Key Laboratory of Reproductive Medicine(Grant No.SKLRMGC201802)Top-notch Academic Programs Project of Jiangsu Higher Education Institutions(Grant No.PPZY2015A067)。
文摘There were few studies of cumulative live birth rates(CLBRs) based on multicenter reproductive clinical data from the general Chinese population.Here we report a retrospective cohort study,including 14 311 women with17 315 cycles,in three reproductive centers to evaluate two estimated parameters of CLBRs with multiple transfer cycles of in vitro fertilization(IVF)/intracytoplasmic sperm injection(ICSI) in a Chinese population.We found that CLBRs were related to female age and endometrial thickness.By the fourth transfer cycle,the conservative and optimal estimates of CLBRs were 52.95% and 77.30% in women under 30 years of age,and 18.17% and26.51% in those 37 years of age or older,respectively.The two estimates were 44.70% and 63.15% in women with endometrial thickness more than 7 mm,and 32.05% and 46.18% in those with less than 7 mm,respectively.In addition,body mass index(BMI),duration of infertility,and infertility diagnoses may also be related to CLBRs on certain conditions.The findings from this study on CLBRs after multiple transfer cycles of IVF/ICSI treatment on different conditions in the Chinese population should be beneficial to both infertile couples and clinicians.
基金National Natural Science Foundation of China(51602042,51602045)the Fundamental Research Funds for the Central Universities(N162304004,N162304013)+1 种基金the Natural Science Foundation of Hebei Province(E2017501082)the Scientific Research Foundation of Northeastern University at Qinhuangdao(XNB201715)
文摘Homogeneous and dispersed Y3 Al5 O12（yttrium aluminum garnet,YAG） nanopowders were synthesized via a homogeneous co-precipitation method from the mixed solutions of yttrium nitrate,aluminum nitrate and a small amount of ammonium sulfate using hot urea as the precipitant.The method has the superiorities that co-precipitation of cations is ensured and continuous decomposition of the hot urea is achieved to obtain the narrow size distribution particles.The addition of small amount of ammonium sulfate surfactant,although has no influence on YAG garnet phase formation,has significant effect on dispersion,particles distribution and sinterability of the resultant YAG and Yb：YAG powders.Compared with the undoped sample,the green body of Yb：YAG doped with ammonium sulfate has higher total shrinkage,linear shrinkage rate and relative density through sintering at 1600 ℃.The resultant Yb：YAG powders can be sintered into transparent ceramics at 1700 ℃ through vacuum sintering.The influence of the sulfate ions on characteristics of the resultant powders was thoroughly studied.
基金Supported by National Oil-gas Project:No XQ-2004-07
文摘Digital geological mapping fundamentally broke through the traditional working pattern,successfully carried out the geological mapping digitalization.By using the RGMAP system to field digital geological mapping,the authors summarized the method of work and the work flow of the RGMAPGIS during the field geological survey.First,we prepared material,set up the PRB gallery,then put the geographic base map under the background maplayer and organizing the field hand map,forming the field factual datum map.At last,the geological space database is formed.
基金supported by grants from the National Key Research and Development Program of China(2022YFA1303900 and 2021YFC2700705)the National Natural Science Foundation of China(82103919).
文摘The impact of mother-infant microbiota on neurodevelopment is an area of interest,but longitudinal studies are scarce.Using a cohort of 520 families from the Jiangsu birth cohort in China,we reveal that the maternal gut microbiota during early pregnancy play a substantial role,accounting for 3.34%of the variance in offspring neurodevelopmental scores.This contribution is notably higher than the 1.24%attributed to the infants’own microbiota at 1 year of age,underscoring the significant influence of maternal gut health on early child development.Remarkably,an elevation in maternal Bifidobacterium pseudocatenulatum is linked to decreased cognitive scores,whereas an enrichment of Bifidobacterium longum at 1 year of age is associated with higher cognitive scores.Furthermore,we find that maternal B.pseudocatenulatum is linked to the heterolactic fermentation metabolic pathway,while infant B.longum is associated with the Bifidobacterium shunt pathway.In summary,our analysis implies that maternal and infant gut microbiota play a distinct role in neurodevelopment,suggesting potential strategies for improving neurodevelopmental outcomes during early pregnancy or infant development by targeting gut microbiota composition.
