链霉菌是一种重要的微生物资源,具有广泛的应用价值。本研究从土壤中筛选出一株对多种病原菌有抑制效果的菌株,编号TX21,其中对玉蜀黍平脐蠕孢的抑菌效果最优,为50.0%。采用浸种及喷施的方法探究了菌株TX21发酵上清液对水稻种子和黄瓜...链霉菌是一种重要的微生物资源,具有广泛的应用价值。本研究从土壤中筛选出一株对多种病原菌有抑制效果的菌株,编号TX21,其中对玉蜀黍平脐蠕孢的抑菌效果最优,为50.0%。采用浸种及喷施的方法探究了菌株TX21发酵上清液对水稻种子和黄瓜幼苗的促生效果,结果显示发酵上清液能使水稻种子胚根和胚芽分别增长48.5%和47.1%,黄瓜幼苗根系和鲜重分别增加了37.6%和47.0%,表现出良好的促生作用;通过形态学观察、生理生化和16S r RNA分子生物学鉴定苜蓿链霉菌Streptomyces alfalfae。利用黄瓜子叶叶绿素试验及UHPLC-MS方法明确了发酵上清液的有效促生物质,证实其中含有2-甲硫顺式玉米素核苷(ms^(2)io^(6)A,分子式:C_(16)H_(23)N_(5)O_(5)S)。展开更多
Steering the directional carrier migration across the interface is a central mission for efficient photocatalytic reactions.In this work,an atomic-shared heterointerface is constructed between the defect-rich ZnIn_(2)...Steering the directional carrier migration across the interface is a central mission for efficient photocatalytic reactions.In this work,an atomic-shared heterointerface is constructed between the defect-rich ZnIn_(2)S_(4)(HVs-ZIS)and CoIn_(2)S_(4)(CIS)via a defect-guided heteroepitaxial growth strategy.The strong interface coupling induces adequate carriers exchanging passageway between HVs-ZIS and CIS,enhancing the internal electric field(IEF)in the ZnIn_(2)S_(4)/CoIn_(2)S_(4)(HVs-ZIS/CIS)heterostructure.The defect structure in HVs-ZIS induces an additional defect level,improving the separation efficiency of photocarriers.Moreover,promoted by the IEF and intimate heterointerface,photogenerated electrons trapped by the defect level can migrate to the valence band of CIS,contributing to massive photogenerated electrons with intense reducibility in HVs-ZIS/CIS.Consequently,the HVs-ZIS/CIS heterostructure performs a boosted H_(2)evolution activity of 33.65 mmol g^(-1)h^(-1).This work highlights the synergistic effects of defect and strong interface coupling in regulating carrier transfer and paves a brave avenue for constructing efficient heterostructure photocatalysts.展开更多
文摘链霉菌是一种重要的微生物资源,具有广泛的应用价值。本研究从土壤中筛选出一株对多种病原菌有抑制效果的菌株,编号TX21,其中对玉蜀黍平脐蠕孢的抑菌效果最优,为50.0%。采用浸种及喷施的方法探究了菌株TX21发酵上清液对水稻种子和黄瓜幼苗的促生效果,结果显示发酵上清液能使水稻种子胚根和胚芽分别增长48.5%和47.1%,黄瓜幼苗根系和鲜重分别增加了37.6%和47.0%,表现出良好的促生作用;通过形态学观察、生理生化和16S r RNA分子生物学鉴定苜蓿链霉菌Streptomyces alfalfae。利用黄瓜子叶叶绿素试验及UHPLC-MS方法明确了发酵上清液的有效促生物质,证实其中含有2-甲硫顺式玉米素核苷(ms^(2)io^(6)A,分子式:C_(16)H_(23)N_(5)O_(5)S)。
基金supported by the National Natural Science Foundation of China(52072196,52002200,52102106,52202262,22379081,22379080)the Major Basic Research Program of Natural Science Foundation of Shandong Province(ZR2020ZD09)+1 种基金the Natural Science Foundation of Shandong Province(ZR2020QE063,ZR202108180009,ZR2023QE059)the Project funded by China Postdoctoral Science Foundation(2023M741871)。
文摘Steering the directional carrier migration across the interface is a central mission for efficient photocatalytic reactions.In this work,an atomic-shared heterointerface is constructed between the defect-rich ZnIn_(2)S_(4)(HVs-ZIS)and CoIn_(2)S_(4)(CIS)via a defect-guided heteroepitaxial growth strategy.The strong interface coupling induces adequate carriers exchanging passageway between HVs-ZIS and CIS,enhancing the internal electric field(IEF)in the ZnIn_(2)S_(4)/CoIn_(2)S_(4)(HVs-ZIS/CIS)heterostructure.The defect structure in HVs-ZIS induces an additional defect level,improving the separation efficiency of photocarriers.Moreover,promoted by the IEF and intimate heterointerface,photogenerated electrons trapped by the defect level can migrate to the valence band of CIS,contributing to massive photogenerated electrons with intense reducibility in HVs-ZIS/CIS.Consequently,the HVs-ZIS/CIS heterostructure performs a boosted H_(2)evolution activity of 33.65 mmol g^(-1)h^(-1).This work highlights the synergistic effects of defect and strong interface coupling in regulating carrier transfer and paves a brave avenue for constructing efficient heterostructure photocatalysts.
