Effects of Trichoderma on nitrogen absorption and use efficiency in Lycium chinense roots under saline stress

To clarify the mechanisms underlying the improvement of Trichoderma on Chinese wolfberry (Lycium chinense) growth under saline stress,we analyzed the effects of application of organic fertilizer,Trichoderma agent and fertilizer on nitrogen uptake,assimilation,accumulation and use efficiency in Chinese wolfberry,based on a pot experiment with coastal saline soil.The organic fertilizer was the sterilization substance of Trichoderma fertilizer without viable Trichoderma,without any difference in the content of nutrients (such as nitrogen,phosphorus and potassium) between them.The results showed that the application of organic fertilizer,Trichoderma agent and fertilizer significantly increased NO_3~- and NH_4~+ influx rate in meristematic zone and NO_3~- influx rate in maturation zone of roots.The magnitude of such enhancement was greater in the application with Trichoderma fertilizer than organic fertilizer.Compared with the control,the application of Trichoderma agent and fertilizer significantly increased root,stem and leaf biomass and nitrogen content as well as plant nitrogen accumulation,strengthened root and leaf nitrate reductase,nitrite reductase and glutamine synthetase activities,and elevated nitrogen uptake efficiency,photosynthetic rate,stable carbon isotope abundance and photosynthetic nitrogen use efficiency.For all those variables,the beneficial effect was obviously stronger in the application with Trichoderma fertilizer than organic fertilizer.Therefore,Trichoderma facilitated nitrogen uptake,assimilation and accumulation in Chinese wolfberry under saline stress,improved photosynthetic carbon fixation ability and nitrogen use efficiency,and ultimately promoted plant growth

Studies on Catalytic Mechanism of Li/SOCl_2 Batteries by Metal Phthalocyanine Complexes

合成过渡金属酞菁配合物MPc(M=Mn(Ⅱ),Fe(Ⅱ),Co(Ⅱ),N i(Ⅱ),Cu(Ⅱ)),研究MPc及其中心离子对L i/SOC l2电池正极的催化作用,并提出相关催化机理.Effects of metal phthalocyanine comlexes MPc(M= Mn(Ⅱ),Fe(Ⅱ),Co(Ⅱ),Ni(Ⅱ),Cu(Ⅱ)) as electrochemical catalysts on the performance of Li/SOCl2 batteries have been examined at constant resistance.And the reasons of MPc affecting the discharged voltage and discharged time of Li/SOCl2 batteries were also brought forward.A few new viewpoints on the catalytic mechanism of the reduction of thionyl chloride by phthalocyanine complexes were proposed.作者联系地址：西北大学化学系陕西省物理无机化学重点实验室,西北大学化学系陕西省物理无机化学重点实验室,西北大学化学系陕西省物理无机化学重点实验室,西北大学化学系陕西省物理无机化学重点实验室,西北大学化学系陕西省物理无机化学重点实验室,西安机电信息研究所,西北大学化学系陕西省物理无机化学重点实验室 陕西西安710069,陕西西安710069,陕西西安710069,陕西西安710069,陕西西安710069,陕西西安710065,陕西西安710069Author's Address: 1.Shaanxi Key Laboratory of Physico-Inorganic Chemistry,Department of Chemistry, Northwest University,Xi'an,710069,China,2.P.O.Box 121,Xi'an,710065,Chin