陆地总氮输入量增加60%，获得全球陆地BNF新估值，包括迄今已知最古老的晚期糖基化终产物实例， ， Harish K. Vedantham et al. ▲链接： https://www.nature.com/articles/s41586-025-09236-z ▲摘要： 该研究报道了拥有两颗已知近轨行星的1700万年的G型矮星在HIP 67522恒星上探测到的行星诱发耀斑现象， ▲ Abstract： Here，最内层行星持续承受着比没有相互作用时高出六倍的耀斑速率，研究发现其2.2天文单位内的星盘大气层底部存在温暖的氧化硅气体与结晶硅酸盐矿物储层， such that the motor thalamus preferentially activates the M1 neurons that encode learned movements in experts. Inactivation of the thalamic inputs to M1 in experts impairs learned movements. Our study shows that motor learning reshapes the thalamic influence on M1 to enable the reliable execution of learned movements. 特别声明：本文转载仅仅是出于传播信息的需要，请与我们接洽。

accelerating racemization and facilitating kinetically matched electron transfer events. 地球科学Earth Science Global terrestrial nitrogen fixation and its modification by agriculture 全球陆地生态系统氮固定及其农业活动影响 ▲ 作者：Carla R. Reis Ely。

《自然》（20250717出版）一周论文导读 编译|李言 Nature，2025年7月17日， 通过结合凌日系外行星巡天卫星的太空光度测量数据及特征化系外行星望远镜历时5年的专项观测。

recently detected with the James Webb Space Telescope. HIP 67522 is，Volume 643 Issue 8072 《自然》， 56?(5458)?Tg?N?yr?1. Agricultural BNF has increased terrestrial BNF by 64% and total terrestrial N inputs from all sources by 60% over pre-industrial levels. Our results indicate that BNF may impose stronger constraints on the carbon sink in natural terrestrial biomes and represent a larger source of agricultural N than is generally considered in analyses of the global N cycle。

uncertainty in fragment identification and possible sequence diagenesis. We identify likely modifications that support the ancient age of these proteins。

这种强大的电酶催化方法能低至0.05 mol%的酶负载量在全细胞体系中应用， 通过与快速颗粒生长凝结模型及星盘结构模型的对比， 65?(5277)?Tg?N?yr?1， and using criteria to locate diagenetiforms derived from enamel，须保留本网站注明的“来源”，研究人员鉴定出学习前后均受丘脑输入强驱动的M1第2/3层神经元亚群，其时间尺度与太阳系内难熔物质凝结过程相当， although we caution that this approach must account for sparse fragments， we recover fragments of enamelin，表明此处形成的难熔固态物质与太阳系内同类物质具有相似性，表明该系统中存在持续的磁星行星相互作用， ▲ Abstract： Here we report the detection of planet-induced flares on HIP 67522， and some of the oldest examples of advanced glycation end-products yet known. The discovery of protein sequences within dense enamel tissues in one of the persistently warmest regions on Earth promises the discovery of much older proteomes that will aid in the study of the palaeobiology and evolutionary relationships of extinct taxa. Motor learning refines thalamic influence on motor cortex 运动学习细化丘脑对运动皮层的调控作用 ▲ 作者：Assaf Ramot，并采用特定标准定位源自牙釉质的成岩修饰片段， as field BNF measurements in natural terrestrial ecosystems occur where N fixers are 17 times more prevalent than their mean abundances worldwide. To correct this bias，基于主要生物地球化学固氮生态位分布对实地测量数据进行升尺度估算， 在地球持续高温区域之一的致密牙釉质组织中发现蛋白质序列，研究人员通过空间显式尺度转换方法，第643卷，为校正偏差， Merel vant Hoff et al. ▲链接： https://www.nature.com/articles/s41586-025-09163-z ▲摘要： 研究首次观测到行星系统诞生的零时刻，使运动丘脑优先激活编码熟练动作的M1神经元，但系统发育分析表明其对已灭绝类群的分类定位具有重要贡献， a 17 million-year-old G dwarf star with two known close-in planets. Combining space-borne photometry from the Transiting Exoplanet Survey Satellite and dedicated Characterising Exoplanets Telescope observations over 5?years，星盘内缘区域的物质环境受到星际固态物质升华作用支配， 利用光遗传学技术， Kenya，随后从该气体储层中再凝结形成的难熔固体物质，这种相互作用的稳定性意味着，因此，对映体过量值高达99%， indicating persistent magnetic starplanet interaction in the system. The stability of interaction implies that the innermost planet is continuously self-inflicting a six times higher flare rate than it would experience without interaction. The subsequent flux of energetic radiation and particles bombarding HIP 67522 b may explain the remarkably extended atmosphere of the planet。

低于既往自下而上的经验估计，BNF在自然生物群落中可能对碳汇形成更强约束，预示着可能发现更古老的蛋白质组。

发现该恒星的15次耀斑爆发最内层行星凌日相位附近集中出现， with most BNF occurring in tropical forests and drylands. We also find high agricultural BNF in croplands and cultivated pastures， ▲ Abstract： Here we report the reshaping of thiamine-dependent enzymes with ferrocene-mediated electrocatalysis to unlock an unnatural dynamic kinetic oxidation of -branched aldehydes. This robust electroenzymatic approach yields various bioactive (S)-profens with up to 99% enantiomeric excess; it is applicable with whole cells overexpressing the enzyme and using down to 0.05?mol% enzyme loadings. Mechanistic investigations show multiple functions of the electroenzyme in precise substrate discrimination， Yuanyuan Xu et al. ▲链接： https://www.nature.com/articles/s41586-025-09178-6 ▲摘要：