新常态下商业银行和企业两部门杠杆联动的微观机制和宏观效应

本文通过构建一个具备微观基础的局部均衡模型，研究了企业和商业银行两部门杠杆联动与资本市场信贷风险溢价之间的动态关系。研究结果发现上述两者之间存在正相关性。这一结果丰富了当前新凯恩斯主义货币经济对信贷风险溢价的内涵，将金融杠杆纳入微观动态研究框架内。在宏观层面上，企业和商业银行两部门杠杆联动一方面会减弱企业投资动力，另一方面又会导致银行“惜贷”，导致“债务-通缩”加速。由此本文建议宏观政策制定者应着重从企业和金融两部门关注当前“去杠杆”进程，在保持相对宽松的货币政策前提下，辅以预期管理，为经济转型造成良好的宏观环境

新常态下商业银行和企业两部门杠杆联动的微观机制和宏观效应

本文通过构建一个具备微观基础的局部均衡模型，研究了企业和商业银行两部门杠杆联动与资本市场信贷风险溢价之间的动态关系。研究结果发现上述两者之间存在正相关性。这一结果丰富了当前新凯恩斯主义货币经济对信贷风险溢价的内涵，将金融杠杆纳入微观动态研究框架内。在宏观层面上，企业和商业银行两部门杠杆联动一方面会减弱企业投资动力，另一方面又会导致银行“惜贷”，导致“债务-通缩”加速。由此本文建议宏观政策制定者应着重从企业和金融两部门关注当前“去杠杆”进程，在保持相对宽松的货币政策前提下，辅以预期管理，为经济转型造成良好的宏观环境

Consensus Genetic Linkage Map Construction Based on One Common Parental Line for QTL Mapping in Wheat

The consensus map is used for the verification of marker order, quantitative trait locus (QTL) mapping and molecular marker-assisted selection (MAS) in wheat breeding. In this study, a wheat consensus genetic map named as Sp7A_G7A, was constructed using 5643 SNP markers in two double haploid (DH) populations of Spitfire × Bethlehem-7AS (Sp7A) and Gregory × Bethlehem-7AS (G7A), covering 4376.70 cM of 21 chromosomes (chr) with an average interval of 0.78 cM. The collinearity of the linkage maps with the consensus map of Con_map_Wang2014 and the physical map of wheat reference genome (IWGSC RefSeq v1.0) were analyzed based on the Spearman rank correlation coefficients. As results, the three constructed genetic maps of Sp7A, G7A and Sp7A_G7A showed high collinearity with the Con_map_Wang2014 and the physical map, and importantly, the collinearity level between our constructed maps and the wheat physical map is higher than that between the Con_map_Wang2014 and the physical map. The seed coat color QTL detected in both populations under multiple environments were on the region (745.73–760.14 Mbp) of the seed color gene R-B1/Tamyb10-B1 (TraesCS3B02G515900, 3B: 757,918,264–757,920,082 bp). The validated consensus map will be beneficial for QTL mapping, positional cloning, meta-QTL analysis and wheat breading

Zunyimycins B and C, New Chloroanthrabenzoxocinones Antibiotics against Methicillin-Resistant Staphylococcus aureus and Enterococci from Streptomyces sp. FJS31-2

This study performed an optimization of the fermentation conditions to activate the expression of the zunyimycin family biosynthesis genes of the zunyimycin-producing streptomycetes strain Streptomyces sp. FJS31-2. Bioassay-guided isolation and purification by varied chromatographic methods yielded two new compounds of the zunyimycin derivatives, namely, 31-2-7 and 31-2-8, accompanied with three known anthrabenzoxocinones family members of zunyimycin A, BE24566B, and chloroanthrabenzoxocinone. Their structures were elucidated by NMR, HRESIMS, IR, UV, and CD. Results showed that these two compounds were structurally similar to the previously reported compound zunyimycin A but differed in positions and number of chlorine atom substitution. The two novel compounds were called zunyimycins B and C. Antibacterial activity assay indicated that zunyimycin C showed a good inhibitory effect on the methicillin-resistant Staphylococcus aureus and Enterococci