以盆栽的C4植物-湖南稷子 Echinochloafrumentacea 为材料,用6-苄氨基嘌呤 BA 和脱落酸 ABA 定位涂抹湖南稷子的穗、上位和下位叶片,分析了植物体激素平衡的局部改变对整株水平上Na+、K+和游离脯氨酸分配的调节.实验结果表明,ABA和具有...以盆栽的C4植物-湖南稷子 Echinochloafrumentacea 为材料,用6-苄氨基嘌呤 BA 和脱落酸 ABA 定位涂抹湖南稷子的穗、上位和下位叶片,分析了植物体激素平衡的局部改变对整株水平上Na+、K+和游离脯氨酸分配的调节.实验结果表明,ABA和具有细胞分裂素活性的BA是调控Na+、K+及游离脯氨酸在不同层位叶中分配的重要因素.ABA涂抹湖南稷子的上位叶片,上位叶片中的Na+比其下位叶片高35.0%;用ABA涂抹湖南稷子的下位叶片,下位叶片中的K+比其上位叶片高31.4%,下位叶鞘中的K+比其上位叶鞘高53.7%.用BA涂抹湖南稷子的下位叶片,下位叶片中的K+和脯氨酸分别比其上位叶片高16.5%和31.7%;用BA或ABA定位涂抹植物地上不同部位,引起植物整株水平上Na+、K+向光合作用强的部位,特别是向活跃期的穗中选择性运输的能力增强,游离脯氨酸也多集中于代谢旺盛的光合器官和生殖器官.展开更多
The circadian system plays an immense role in controlling physiological processes in our body.The suprachiasmatic nucleus (SCN) supervises this system,regulating and harmonising the circadian rhythms in our body.Most ...The circadian system plays an immense role in controlling physiological processes in our body.The suprachiasmatic nucleus (SCN) supervises this system,regulating and harmonising the circadian rhythms in our body.Most neurons present in the SCN are GABAergic neurons.Although GABA is considered the main inhibitory neurotransmitter of the CNS,recent studies have shown that excitatory responses were recorded in this area.These responses are enabled by an increase in intracellular chloride ions[Cl;];levels.The chloride (Cl;) levels in GABAergic neurons are controlled by two solute carrier 12 (SLC12)cation-chloride-cotransporters (CCCs):Na^(+)/K^(+)/Cl^(-)co-transporter (NKCC1) and K^(+)/Cl^(-)cotransporter (KCC2),that respectively cause an influx and efflux of Cl^(-).Recent works have found altered expression and/or activity of either of these co-transporters in SCN neurons and have been associated with circadian rhythms.In this review,we summarize and discuss the role of CCCs in circadian rhythms,and highlight these recent advances which attest to CCC’s growing potential as strong research and therapeutic targets.展开更多
文摘以盆栽的C4植物-湖南稷子 Echinochloafrumentacea 为材料,用6-苄氨基嘌呤 BA 和脱落酸 ABA 定位涂抹湖南稷子的穗、上位和下位叶片,分析了植物体激素平衡的局部改变对整株水平上Na+、K+和游离脯氨酸分配的调节.实验结果表明,ABA和具有细胞分裂素活性的BA是调控Na+、K+及游离脯氨酸在不同层位叶中分配的重要因素.ABA涂抹湖南稷子的上位叶片,上位叶片中的Na+比其下位叶片高35.0%;用ABA涂抹湖南稷子的下位叶片,下位叶片中的K+比其上位叶片高31.4%,下位叶鞘中的K+比其上位叶鞘高53.7%.用BA涂抹湖南稷子的下位叶片,下位叶片中的K+和脯氨酸分别比其上位叶片高16.5%和31.7%;用BA或ABA定位涂抹植物地上不同部位,引起植物整株水平上Na+、K+向光合作用强的部位,特别是向活跃期的穗中选择性运输的能力增强,游离脯氨酸也多集中于代谢旺盛的光合器官和生殖器官.
基金supported by a Commonwealth Ph D Scholarship(S.S.J.)NSFC grants to Y.W.(31771188,31471027)+1 种基金the University of Exeter Medical School start-up fund(J.Z.)NIH Grants R01 NS109358(J.Z.)。
文摘The circadian system plays an immense role in controlling physiological processes in our body.The suprachiasmatic nucleus (SCN) supervises this system,regulating and harmonising the circadian rhythms in our body.Most neurons present in the SCN are GABAergic neurons.Although GABA is considered the main inhibitory neurotransmitter of the CNS,recent studies have shown that excitatory responses were recorded in this area.These responses are enabled by an increase in intracellular chloride ions[Cl;];levels.The chloride (Cl;) levels in GABAergic neurons are controlled by two solute carrier 12 (SLC12)cation-chloride-cotransporters (CCCs):Na^(+)/K^(+)/Cl^(-)co-transporter (NKCC1) and K^(+)/Cl^(-)cotransporter (KCC2),that respectively cause an influx and efflux of Cl^(-).Recent works have found altered expression and/or activity of either of these co-transporters in SCN neurons and have been associated with circadian rhythms.In this review,we summarize and discuss the role of CCCs in circadian rhythms,and highlight these recent advances which attest to CCC’s growing potential as strong research and therapeutic targets.
