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Two-stage reproduction derived from cells of thallus could directly contribute to seeds for green tidal algal Enteromorpha(Ulva) prolifera/clathrata bloom,with disclosure of their ephemeral trait

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Acta Oceanologica Sinica 2023年第9期42卷 101-112页

作者： Bingxin Huang Lanping Ding Yao Zhang Youxuan Guo Junxia Liang yanqi xie Yue Chu College of Life Sciences Tianjin Normal UniversityTianjin 300387China Marine Biology Institute Shantou UniversityShantou 515063China Zhanjiang No.2 Middle School Zhanjiang 524000China

Green tidal algal Enteromorpha species complete their life cycles by the isomorphic alternation of *** provenance of green tide caused by them in the western Yellow Sea has been disputed. The cell reproduction derived from adult thallus was observed on E. clathrata collected from Shantou City, Guangdong Province in this study. Subsequently, it further found that E. proliferia collected from Qingdao City, Shandong Province and Qinhuangdao City, Hebei Province, produced reproductive cells by somatic cells of its early infantile thallus or branch. The latter is functionally similar to that the seedlings of red alga Porphyra yezoensis produce the monospores, and could exquisitely explain the ephemeral or opportunistic trait and environmental adaptation ability of Enteromorpha species. Changes in growth conditions may induce the two types of cell *** contribute to the bloom, and can effectively reveal the seasonally occurring large-scale and on-year and offyear phenomenon. The latter may have played a decisive role in its formation. This paper analyses the legal status of the species name, the type of generation during bloom, ephemeral traits, the role of microscopic propagule, the area of origin, on-year and off-year phenomenon, early warning and prevention and control of the species, and so on. On this basis, further study on the influence of environmental factors on cell reproduction of early infantile thalli or branches will achieve a positive effect for early warning and prevention and control of the green tidal algal bloom.

关键词： green tidal algae Yellow Sea opportunistic trait on-year and off-year early infantile alternation of generations prediction on the occurrence process

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Designing simple non-fused terthiophene-based electron acceptors for efficient organic solar cells

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Journal of Energy Chemistry 2024年第9期96卷 501-508页

作者： Jiayu Li Kun Li Zhe Mei Yu Chen Qian xie Chenxu Yu Xuefeng Liu yanqi Wang Yishi Wu Qing Liao Cunbin An Hongbing Fu Beijing Key Laboratory for Optical Materials and Photonic Devices Department of ChemistryCapital Normal UniversityBeijing 100048China Beijing Synchrotron Radiation Laboratory Institute of High Energy PhysicsChinese Academy of Sciences(CAS)Beijing 100049China

Low-cost photovoltaic materials are essential for realizing large-scale commercial applications of organic solar cells(OSCs).However,highly efficient OSCs based on low-cost photovoltaic materials are scarce due to a deficiency in understanding the structure-property ***,we investigated two low-cost terthiophene-based electron acceptors,namely,3TC8 and 3TEH,with 3,4-bis(octan-3-yloxy)thiophene,differing only in the alkylated *** acceptors exhibit low optical gaps(∼1.43 eV)and possess deep highest occupied molecular orbital(HOMO)levels(∼−5.8 eV).Notably,the single-crystal structure of 3TEH demonstrates highly planar conjugated backbone and strongπ-πstacking between intermolecular terminal groups,attributed to the presence of the bulky alkylated noncovalently conformational *** utilizing both acceptors to fabricate OSCs,the 3TC8-based device exhibited a power conversion efficiency(PCE)of 11.1%,while the 3TEH-based OSC demonstrated an excellent PCE of 14.4%.This PCE is the highest among OSCs based on terthiophene-containing electron *** results offer a new strategy for designing low-cost electron acceptors for highly efficient OSCs.

关键词： Organic solarcells Low cost Terthiophene Non-fused electron acceptor

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On the evolutionary trail of MagRs

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Zoological Research 2024年第4期45卷 821-830页

作者： Jing Zhang Yafei Chang Peng Zhang yanqi Zhang Mengke Wei Chenyang Han Shun Wang Hui-Meng Lu Tiantian Cai Can xie High Magnetic Field Laboratory Hefei Institutes of Physical ScienceChinese Academy of SciencesScience IslandHefeiAnhui 230031China Science Island Branch of Graduate School University of Science and Technology of ChinaHefeiAnhui 230036China Institutes of Physical Science and Information Technology Anhui UniversityHefeiAnhui 230039China School of Life Sciences Key Laboratory for Space Bioscience and BiotechnologyNorthwestern Polytechnical UniversityXi’anShaanxi 710072China Institute of Quantum Sensing Zhejiang UniversityHangzhouZhejiang 310027China

Magnetic sense,or termed magnetoreception,has evolved in a broad range of taxa within the animal kingdom to facilitate orientation and ***,highly conserved A-type iron-sulfur proteins,are widely distributed across all phyla and play essential roles in both magnetoreception and iron-sulfur cluster ***,the evolutionary origins and functional diversification of MagRs from their prokaryotic ancestor remain *** this study,MagR sequences from 131 species,ranging from bacteria to humans,were selected for analysis,with 23 representative sequences covering species from prokaryotes to Mollusca,Arthropoda,Osteichthyes,Reptilia,Aves,and mammals chosen for protein expression and *** studies revealed a gradual increase in total iron content in MagRs during *** types of MagRs were identified,each with distinct iron and/or iron-sulfur cluster binding capacity and protein stability,indicating continuous expansion of the functional roles of MagRs during speciation and *** evolutionary biochemical study provides valuable insights into how evolution shapes the physical and chemical properties of biological molecules such as MagRs and how these properties influence the evolutionary trajectories of MagRs.

关键词： Magnetoreception Magnetoreceptor(MagR) Iron-sulfur cluster Stability Evolutionary biochemistry

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冷冻保存中影响胞内冰生长的因素

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化工学报 2019年第A2期70卷 208-214页

作者：诸凯谢艳琦王雅博天津商业大学天津市制冷技术重点实验室

细胞胞内冰的形成会导致严重的细胞损伤从而导致低温贮存中的诸多问题。以蚕豆为研究对象,用细胞松弛素B溶解细胞骨架,使用低温显微系统在不同的冷却速率下进行冷冻实验。实验结果表明,使用细胞松弛素B处理过的细胞在冷冻过程中结晶温... 详细信息

细胞胞内冰的形成会导致严重的细胞损伤从而导致低温贮存中的诸多问题。以蚕豆为研究对象,用细胞松弛素B溶解细胞骨架,使用低温显微系统在不同的冷却速率下进行冷冻实验。实验结果表明,使用细胞松弛素B处理过的细胞在冷冻过程中结晶温度更高,结晶时间更短,但细胞骨架对胞内冰的生长过程影响较小。外界条件起着关键作用,接种冰晶影响细胞内冰晶的形成温度及冰晶的生长速率。最后,通过光强度图对细胞的损伤程度进行了分析。

关键词：显微测量微丝骨架细胞松弛素B 传质细胞生物学界面

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Filamentous morphology engineering of bacteria by iron metabolism modulation through MagR expression

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Synthetic and Systems Biotechnology 2024年第3期9卷 522-530页

作者： Mengke Wei Chenyang Han Xiujuan Zhou Tianyang Tong Jing Zhang Xinmiao Ji Peng Zhang yanqi Zhang Yan Liu Xin Zhang Tiantian Cai Can xie Institutes of Physical Science and Information Technology Anhui UniversityHefeiAnhui230039China High Magnetic Field Laboratory Hefei Institutes of Physical ScienceChinese Academy of SciencesScience IslandHefeiAnhui230031China Science Island Branch of Graduate School University of Science and Technology of ChinaHefeiAnhui230036China Department of Anatomy Anhui Medical UniversityHefeiAnhui230032China Institute of Quantum Sensing Zhejiang UniversityHangzhouZhejiang310027China

The morphology is the consequence of evolution and *** coli is rod-shaped bacillus with regular dimension of about 1.5μm long and 0.5μm *** shape-related genes have been identified and used in morphology engineering of this ***,little is known about if specific metabolism and metal irons could modulate bacteria *** in this study,we discovered filamentous shape change of *** cells overexpressing pigeon MagR,a putative magnetoreceptor and extremely conserved iron-sulfur *** transcriptomic analysis strongly suggested that the iron metabolism change and iron accumulation due to the overproduction of MagR was the key to the morphological *** model was further validated,and filamentous morphological change was also achieved by supplement *** cells with iron in culture medium or by increase the iron uptake genes such as entB and *** study extended our understanding of morphology regulation of bacteria,and may also serves as a prototype of morphology engineering by modulating the iron metabolism.

关键词： Morphology regulation Iron accumulation Filamentous bacteria MagR overexpression

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冷冻条件对植物细胞低温保存的影响

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化工学报 2018年第A2期69卷 200-204页

作者：谢艳琦诸凯王雅博天津商业大学天津市制冷技术重点实验室天津300134

为保证食品果蔬冷藏保存的品质,细胞层面的基础研究是必不可少的一部分,细胞内冰的形成(IIF)会导致严重的细胞损伤从而导致低温储存中的诸多问题。预冷过程对胞内冰晶的形成具有重要影响,因此拍摄到细胞内冰晶形成过程为优化冷冻保存方... 详细信息

为保证食品果蔬冷藏保存的品质,细胞层面的基础研究是必不可少的一部分,细胞内冰的形成(IIF)会导致严重的细胞损伤从而导致低温储存中的诸多问题。预冷过程对胞内冰晶的形成具有重要影响,因此拍摄到细胞内冰晶形成过程为优化冷冻保存方案提供必要的支持。在冷冻洋葱表皮细胞时,采用不同的降温速率,并使用低温显微系统配合高速摄像机,可视化细胞内更清晰的IIF过程。实验结果表明,冷却速率的增加使得在相同温度下细胞内IIF出现的概率降低,但细胞边缘冰晶生长速率增加,使细胞受到的损伤程度变化波动明显。

关键词：低温储存传质细胞生物学显微测量界面可视化

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Mitochondrial targeting sequence of magnetoreceptor MagR:More than just targeting

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Zoological Research 2024年第3期45卷 468-477页

作者： yanqi Zhang Peng Zhang Junjun Wang Jing Zhang Tianyang Tong Xiujuan Zhou Yajie Zhou Mengke Wei Chuanlin Feng Jinqian Li Xin Zhang Can xie Tiantian Cai High Magnetic Field Laboratory Hefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhui 230031China University of Science and Technology of China HefeiAnhui 230026China Department of Anatomy School of Basic MedicineAnhui Medical UniversityHefeiAnhui 230032China Institutes of Physical Science and Information Technology Anhui UniversityHefeiAnhui 230039China Key Laboratory of Tropical Translational Medicine of Ministry of Education NHC Key Laboratory of Tropical Disease ControlSchool of Tropical Medicine and The Second Affiliated HospitalHainan Medical UniversityHaikouHainan 571199China International Magnetobiology Frontier Research Center Science IslandHefeiAnhui 230031China Institute of Quantum Sensing Zhejiang UniversityHangzhouZhejiang 310027China

Iron-sulfur clusters(ISC)are essential cofactors for proteins involved in various biological processes,such as electron transport,biosynthetic reactions,DNA repair,and gene expression *** assembly protein IscA1(or MagR)is found within the mitochondria of most ***(MagR)is a highly conserved A-type iron and iron-sulfur cluster-binding protein,characterized by two distinct types of iron-sulfur clusters,[2Fe-2S]and[3Fe-4S],each conferring unique magnetic *** forms a rod-like polymer structure in complex with photoreceptive cryptochrome(Cry)and serves as a putative magnetoreceptor for retrieving geomagnetic information in animal *** the N-terminal sequences of MagR vary among species,their specific function remains *** the present study,we found that the N-terminal sequences of pigeon MagR,previously thought to serve as a mitochondrial targeting signal(MTS),were not cleaved following mitochondrial entry but instead modulated the efficiency with which iron-sulfur clusters and irons are ***,the N-terminal region of MagR was required for the formation of a stable MagR/Cry ***,the N-terminal sequences in pigeon MagR fulfil more important functional roles than just mitochondrial *** results further extend our understanding of the function of MagR and provide new insights into the origin of magnetoreception from an evolutionary perspective.

关键词： Magnetoreceptor(MagR) N-terminal sequence Mitochondrial targeting signal Iron-sulfur cluster

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Unexpected divergence in magnetoreceptor MagR from robin and pigeon linked to two sequence variations

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Zoological Research 2024年第1期45卷 69-78页

作者： Shun Wang Peng Zhang Fan Fei Tianyang Tong Xiujuan Zhou Yajie Zhou Jing Zhang Mengke Wei yanqi Zhang Lei Zhang Yulong Huang Lin Zhang Xin Zhang Tiantian Cai Can xie Institutes of Physical Science and Information Technology Anhui UniversityHefeiAnhui 230039China High Magnetic Field Laboratory Hefei Institutes of Physical ScienceChinese Academy of SciencesScience IslandHefeiAnhui 230031China Science Island Branch of Graduate School University of Science and Technology of ChinaHefeiAnhui 230036China Department of Anatomy Anhui Medical UniversityHefeiAnhui 230032China Department of Mechanical and Aerospace Engineering University at BuffaloState University of New YorkBuffaloNY 14260 USA International Magnetobiology Frontier Research Center Science IslandHefeiAnhui 230031China

Birds exhibit extraordinary mobility and remarkable navigational skills,obtaining guidance cues from the Earth’s magnetic field for orientation and long-distance *** species also show tremendous diversity in navigation strategies,with considerable differences even within the same taxa and among individuals from the same *** highly conserved iron and iron-sulfur cluster binding magnetoreceptor(MagR)protein is suggested to enable animals,including birds,to detect the geomagnetic field and navigate ***,MagR is also implicated in other functions,such as electron transfer and biogenesis of iron-sulfur clusters,raising the question of whether variability exists in its biochemical and biophysical features among species,particularly *** the current study,we conducted a comparative analysis of MagR from two different bird species,including the migratory European robin(Erithacus rubecula)and the homing pigeon(Columba livia).Sequence alignment revealed an extremely high degree of similarity between the MagRs of these species,with only three sequence ***,two of these variations underpinned significant differences in metal binding capacity,oligomeric state,and magnetic *** findings offer compelling evidence for the marked differences in MagR between the two avian species,potentially explaining how a highly conserved protein can mediate such diverse functions.

关键词： Homing and migration Animal navigation Magnetoreceptor(MagR) Diverse navigation pattern Conserved protein

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基于LMDI模型和Q型聚类的中国城镇生活碳排放因素分解分析

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环境科学研究 2019年第4期32卷 539-546页

作者：王雅楠谢艳琦谢丽琴陈伟西北农林科技大学经济管理学院陕西杨凌712100

为研究城镇居民生活碳排放特征及影响因素,基于LMDI模型从全国和省级层面研究了我国30个省、自治区、直辖市(不含港澳台及西藏自治区) 2006—2015年的城镇生活碳排放,将城镇生活碳排放分解为生活能源消费结构效应、生活能源强度效应、... 详细信息

为研究城镇居民生活碳排放特征及影响因素,基于LMDI模型从全国和省级层面研究了我国30个省、自治区、直辖市(不含港澳台及西藏自治区) 2006—2015年的城镇生活碳排放,将城镇生活碳排放分解为生活能源消费结构效应、生活能源强度效应、消费倾向效应、人均可支配收入效应和城镇人口规模效应,分析各效应逐年和累积效应贡献度以及区域差异,并基于LMDI模型的计算结果对我国30个省、自治区、直辖市进行Q型聚类分析.结果表明:①从全国层面看,人均可支配收入、城镇人口规模是刺激因素,其中,人均可支配收入的影响效应最为显著,而消费倾向、生活能源消费结构、生活能源强度抑制了生活碳排放的增长.②从省级层面看,人均可支配收入、城镇人口规模的累积效应均为正,而消费倾向、生活能源消费结构、生活能源强度对各省、自治区、直辖市生活碳排放的影响效应有正有负,显示出显著差异.因此,政府应引导城镇人口合理增长,并积极制定相应政策优化居民生活能源消费结构.在制定碳减排战略时,要将省级生活碳排放的表面特征与其潜在驱动力相结合,根据不同区域有针对性地实施碳减排政策,同时应及时作出调整,以应对不同的发展阶段.

关键词：城镇生活碳排放影响因素 LMDI模型 Q型聚类

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Mass extinctions, their causes and consequences: an interview with Douglas *** and Shuzhong Shen

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National Science Review 2024年第1期11卷 66-70页

作者： Shucheng xie State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences at Wuhan

‘Mass extinctions’ have been a hot topic for several decades. What triggers a mass extinction? How does a mass extinction impact the evolution of life? How does our ecosystem recover after a mass extinction? These questions attracted the interest of both scientists and the public *** spoke to two renowned researchers in the field of mass extinctions: Prof. Douglas H. Erwin from the National Museum of Natural History of the USA, and Prof. Shuzhong Shen from Nanjing University, China.

关键词： Stratigraphy

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