Biological nitrification inhibitors(BNIs)are released from plant roots and inhibit the nitrification activity of microorganisms in soils,reducing NO_(3)^(‒)leaching and N2O emissions,and increasing nitrogenuse efficie...Biological nitrification inhibitors(BNIs)are released from plant roots and inhibit the nitrification activity of microorganisms in soils,reducing NO_(3)^(‒)leaching and N2O emissions,and increasing nitrogenuse efficiency(NUE).Several recent studies have focused on the identification of new BNIs,yet little is known about the genetic loci that govern their biosynthesis and secretion.We applied a combined transcriptomic and metabolomic analysis to investigate possible biosynthetic pathways and transporters involved in the biosynthesis and release of BNI 1,9-decanediol(1,9-D),which was previously identified in rice root exudates.Our results linked four fatty acids,icosapentaenoic acid,linoleate,norlinolenic acid,and polyhydroxy-α,ω-divarboxylic acid,with 1,9-D biosynthesis and three transporter families,namely the ATP-binding cassette protein family,the multidrug and toxic compound extrusion family,and the major facilitator superfamily,with 1,9-D release from roots into the soil medium.Our finding provided candidates for further work on the genes implicated in the biosynthesis and secretion of 1,9-D and pinpoint genetic loci for crop breeding to improve NUE by enhancing 1,9-D secretion,with the potential to reduce NO_(3)^(‒)leaching and N2O emissions from agricultural soils.展开更多
目的探究血清网膜素-1(Omentin-1)、补体/C1q肿瘤坏死因子相关蛋白9(CTRP-9)水平与急性脑梗死(ACI)神经功能康复的相关性。方法选取2022年11月至2024年2月于该院治疗的ACI患者106例作为研究组,其中包括ACI神经功能康复良好患者62例(良好...目的探究血清网膜素-1(Omentin-1)、补体/C1q肿瘤坏死因子相关蛋白9(CTRP-9)水平与急性脑梗死(ACI)神经功能康复的相关性。方法选取2022年11月至2024年2月于该院治疗的ACI患者106例作为研究组,其中包括ACI神经功能康复良好患者62例(良好组)和康复不良患者44例(不良组)。采用酶联免疫吸附试验检测所有研究对象的血清Omentin-1、CTRP-9水平;采用Spearman相关性分析血清Omentin-1、CTRP-9水平与ACI患者入院时的美国国立卫生研究院卒中量表(NIHSS)评分及脑梗死体积的相关性;采用多因素Logistic回归分析ACI患者神经功能康复不良的影响因素;采用受试者工作特征(ROC)曲线分析血清Omentin-1、CTRP-9水平对ACI患者神经功能康复不良的诊断价值。结果良好组血清Omentin-1、CTRP-9水平明显高于不良组(P<0.05),入院时NIHSS评分、脑梗死面积和发病90 d时改良Rankin量表(mRS)评分明显低于不良组(P<0.05);Spearman相关性分析显示,血清Omentin-1、CTRP-9水平与90 d mRS评分呈负相关(r=-0.648,-0.573,均P<0.001);多因素Logistic回归分析结果显示,90 d mRS评分是ACI患者神经功能康复不良的危险因素(P<0.05),血清Omentin-1、CTRP-9水平是ACI患者神经功能康复不良的保护因素(P<0.05);ROC曲线分析结果显示,血清Omentin-1、CTRP-9水平诊断ACI患者神经功能康复不良的曲线下面积(AUC)为0.843、0.828,二者联合诊断的AUC为0.937,明显大于二者单独诊断(Z_(二者联合-Omentin-1)=2.321,P=0.020;Z_(二者联合-CTRP-9)=2.532,P=0.011)。结论ACI神经功能康复不良患者血清Omentin-1、CTRP-9水平明显降低,且Omentin-1、CTRP-9水平与90 d mRS评分呈负相关,与神经功能康复情况密切相关。展开更多
“农丰9号”是以N108为母本、G15为父本,杂交后经多代系统选育而成的耐早衰豇豆新品种。植株蔓生,主蔓结荚为主,始花节位为第4节,花浅紫色;嫩荚绿色,长圆条形、荚长60~75 cm,种子肾形,种皮红褐色;平均单荚质量23.25 g,冬春季露地667 m ...“农丰9号”是以N108为母本、G15为父本,杂交后经多代系统选育而成的耐早衰豇豆新品种。植株蔓生,主蔓结荚为主,始花节位为第4节,花浅紫色;嫩荚绿色,长圆条形、荚长60~75 cm,种子肾形,种皮红褐色;平均单荚质量23.25 g,冬春季露地667 m 2平均鲜荚产量2300 kg;抗锈病、白粉病,中抗枯萎病。适合华南沿海地区栽培。展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.32030099 and 32072670)the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA28020301)+1 种基金the Youth Innovation Promotion Association of the Chinese Academy of Sciences(Grant No.2023326)the Enterprise Cooperation Projects of China(Grant No.Am20210407RD).
文摘Biological nitrification inhibitors(BNIs)are released from plant roots and inhibit the nitrification activity of microorganisms in soils,reducing NO_(3)^(‒)leaching and N2O emissions,and increasing nitrogenuse efficiency(NUE).Several recent studies have focused on the identification of new BNIs,yet little is known about the genetic loci that govern their biosynthesis and secretion.We applied a combined transcriptomic and metabolomic analysis to investigate possible biosynthetic pathways and transporters involved in the biosynthesis and release of BNI 1,9-decanediol(1,9-D),which was previously identified in rice root exudates.Our results linked four fatty acids,icosapentaenoic acid,linoleate,norlinolenic acid,and polyhydroxy-α,ω-divarboxylic acid,with 1,9-D biosynthesis and three transporter families,namely the ATP-binding cassette protein family,the multidrug and toxic compound extrusion family,and the major facilitator superfamily,with 1,9-D release from roots into the soil medium.Our finding provided candidates for further work on the genes implicated in the biosynthesis and secretion of 1,9-D and pinpoint genetic loci for crop breeding to improve NUE by enhancing 1,9-D secretion,with the potential to reduce NO_(3)^(‒)leaching and N2O emissions from agricultural soils.
文摘目的探究血清网膜素-1(Omentin-1)、补体/C1q肿瘤坏死因子相关蛋白9(CTRP-9)水平与急性脑梗死(ACI)神经功能康复的相关性。方法选取2022年11月至2024年2月于该院治疗的ACI患者106例作为研究组,其中包括ACI神经功能康复良好患者62例(良好组)和康复不良患者44例(不良组)。采用酶联免疫吸附试验检测所有研究对象的血清Omentin-1、CTRP-9水平;采用Spearman相关性分析血清Omentin-1、CTRP-9水平与ACI患者入院时的美国国立卫生研究院卒中量表(NIHSS)评分及脑梗死体积的相关性;采用多因素Logistic回归分析ACI患者神经功能康复不良的影响因素;采用受试者工作特征(ROC)曲线分析血清Omentin-1、CTRP-9水平对ACI患者神经功能康复不良的诊断价值。结果良好组血清Omentin-1、CTRP-9水平明显高于不良组(P<0.05),入院时NIHSS评分、脑梗死面积和发病90 d时改良Rankin量表(mRS)评分明显低于不良组(P<0.05);Spearman相关性分析显示,血清Omentin-1、CTRP-9水平与90 d mRS评分呈负相关(r=-0.648,-0.573,均P<0.001);多因素Logistic回归分析结果显示,90 d mRS评分是ACI患者神经功能康复不良的危险因素(P<0.05),血清Omentin-1、CTRP-9水平是ACI患者神经功能康复不良的保护因素(P<0.05);ROC曲线分析结果显示,血清Omentin-1、CTRP-9水平诊断ACI患者神经功能康复不良的曲线下面积(AUC)为0.843、0.828,二者联合诊断的AUC为0.937,明显大于二者单独诊断(Z_(二者联合-Omentin-1)=2.321,P=0.020;Z_(二者联合-CTRP-9)=2.532,P=0.011)。结论ACI神经功能康复不良患者血清Omentin-1、CTRP-9水平明显降低,且Omentin-1、CTRP-9水平与90 d mRS评分呈负相关,与神经功能康复情况密切相关。
