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Cavitation resistance of peduncle,petiole and stem is correlated with bordered pit dimensions in Magnolia grandiflora

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Plant Diversity 2021年第4期43卷 324-330页

作者： Feng-Ping zhang jiao-lin zhang Timothy J.Brodribb Hong Hu CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMengla 666303YunnanChina College of Traditional Chinese Medicine Yunnan Key Laboratory of Dai and Yi MedicinesYunnan University of Chinese MedicineKunming650500YunnanChina Key Laboratory of Economic Plants and Biotechnology Kunming Institute of BotanyChinese Academy of SciencesYunnan Key Laboratory for Wild Plant ResourcesKunming 650201YunnanChina School of Natural Sciences University of TasmaniaPrivate Bag 55HobartTasmania 7001Australia

Variation in resistance of xylem to embolism among flowers,leaves,and stems strongly influences the survival and reproduction of ***,little is known about the vulnerability to xylem embolism under drought stress and their relationships to the anatomical traits of pits among reproductive and vegetative *** this study,we investigated the variation in xylem vulnerability to embolism in peduncles,petioles,and stems in a woody plant,Magnolia *** analyzed the relationships between water potentials that induced 50%embolism(P50)in peduncles,petioles,and stems and the conduit pit traits hypothesized to influence cavitation *** found that peduncles were more vulnerable to cavitation than petioles and stems,supporting the hypothesis of hydraulic vulnerability segmentation that leaves and stems are prioritized over flowers during drought ***,P50 was significantly correlated with variation in the dimensions of inter-vessel pit apertures among peduncles,petioles and *** findings highlight that measuring xylem vulnerability to embolism in reproductive organs is essential for understanding the effect of drought on plant reproductive success and mortality under drought stress.

关键词： Drought Flower Pit traits Xylem embolism Magnolia

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Convergent relationships between flower economics and hydraulic traits across aquatic and terrestrial herbaceous plants

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Plant Diversity 2023年第5期45卷 601-610页

作者： Yan Ke Feng-Ping zhang Yun-Bing zhang Wei Li Qin Wang Da Yang jiao-lin zhang Kun-Fang Cao CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglaYunnan 666303China University of Chinese Academy of Sciences Beijing 100049China College of Traditional Chinese Medicine Yunnan University of Chinese MedicineKunmingYunnan 650500China School of Biological and Chemical Sciences Puer UniversityPuerYunnan 665000China State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources Guangxi Key Laboratory of Forest Ecology and ConservationGuangxi UniversityDaxuedong Road 100NanningGuangxi 530004China

Maintaining open flowers is critical for successful pollination and depends on long-term water and carbon *** the relationship between how flower hydraulic traits are coordinated in different habitats is poorly ***,we hypothesize that the coordination and trade-offs between floral hydraulics and economics traits are independent of environmental *** test this hypothesis,we investigated a total of 27 flower economics and hydraulic traits in six aquatic and six terrestrial herbaceous species grown in a tropical botanical *** found that although there were a few significant differences,most flower hydraulics and economics traits did not differ significantly between aquatic and terrestrial herbaceous *** flower mass per area and floral longevity were significantly positively correlated with the time required for drying full-hydrated flowers to 70%relative water *** dry matter content was strongly and positively related to drought tolerance of the flowers as indicated by flower water potential at the turgor loss *** addition,there was a trade-off between hydraulic efficiency and the construction cost of a flower across *** results show that flowers of aquatic and terrestrial plants follow the same economics spectrum *** results suggest a convergent flower economics design across terrestrial and aquatic plants,providing new insights into the mechanisms by which floral organs adapt to aquatic and terrestrial habitats.

关键词： Aquatic plants Floral longevity Flower economics traits Flower hydraulic traits Terrestrial plants

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亚热带山地森林木质藤本和共生树木枝条和叶片性状的分化

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Journal of Plant Ecology 2024年第1期17卷 17-32页

作者： Xiao-Long Bai Da Yang Jan Sher Yun-Bing zhang Ke-Yan zhang Qi Liu Han-Dong Wen jiao-lin zhang Martijn Slot CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglunMengla 666303China University of Chinese Academy of Sciences Beijing 100049China Forest Ecology and Forest Management Group Wageningen University and Research Centre6700 AA WageningenThe Netherlands Yuanjiang Savanna Ecosystem Research Station Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesYuanjiang 653300China Smithsonian Tropical Research Institute Apartado 0843-03092BalboaAnconRepublic of Panama

因缺少性状的比较,我们对亚热带山地森林木质藤本和树木的与生态适应策略有关的功能性状变异格局仍知之甚少。本文通过研究中国西南亚热带山地森林中不同叶片习性的33种植物(7种落叶和4种常绿木质藤本、10种落叶和12种常绿树木)的13个... 详细信息

因缺少性状的比较,我们对亚热带山地森林木质藤本和树木的与生态适应策略有关的功能性状变异格局仍知之甚少。本文通过研究中国西南亚热带山地森林中不同叶片习性的33种植物(7种落叶和4种常绿木质藤本、10种落叶和12种常绿树木)的13个性状的分化来填补此空白。研究结果表明,木质藤本的枝条木质部导管直径、理论导水率、比叶面积、叶片氮和磷含量显著高于树木,但其叶片干物质含量和氮磷比显著低于同域分布的树木,表明木质藤本采取获取的生态策略,具有更高效的枝条导水系统和生产力更强的叶片。与树木相比,木质藤本的导管直径变异更大,同时具有一些大导管和很多小导管,说明木质藤本具有较大的导管二型性。生长型解释了性状总变异的48.7%,叶片习性仅解释了3.8%的总变异,生长型和叶片习性之间没有显著的交互作用。此外,枝叶性状仅在树木中存在显著相关,木质藤本中不存在,表明亚热带木质藤本枝条的水力功能与叶片的性状是解耦的。上述结果表明,亚热带山地木质藤本和树木的枝条和叶片功能性状存在显著差异。加强对亚热带山地生态系统中木质藤本和树木生态策略差异机制的认识还需要深入研究。

关键词：功能性状叶片习性叶片形态木质藤本亚热带山地森林木质部解剖

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Transfer RNA-derived small RNA serves as potential non-invasive diagnostic marker and a novel therapeutic target for acute pancreatitis

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World Journal of Gastroenterology 2025年第1期31卷 152-156页

作者： Jing zhang Chun-lin Ou Department of Immunology School of Basic MedicineCentral South UniversityChangsha 410000Hunan ProvinceChina Department of Pathology Xiangya HospitalCentral South UniversityChangsha 410008Hunan ProvinceChina

Transfer RNA(tRNA)-derived fragments,a new type of tRNA-derived small RNA(tsRNA),can be cleaved from tRNA by enzymes to regulate target gene expression at the transcriptional and translational *** are not only degradation fragments but also have biological functions,including those in immune inflammation,metabolic disorders,and cell *** dysregulation is closely associated with multiple diseases,including various cancers and acute pancreatitis(AP).AP is a common gastrointestinal disease,and its incidence increases *** development is associated with tsRNAs,which regulate cell injury and induce inflammation,especially pyroptosis and ***,serum tRF36 has the potential to serve as a non-invasive diagnostic biomarker and leads to pancreatic acinar cell ferroptosis causing inflammation to promote *** show the characteristics of tsRNAs and their diagnostic value and function in AP,and discuss the potential opportunities and challenges of using tsRNAs in clinical applications and research.

关键词： Transfer RNA derived small RNAs Acute pancreatitis Liquid biopsy Biomarker Cell pyroptosis Ferroptosis

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Lipid droplets in the nervous system:involvement in cell metabolic homeostasis

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Neural Regeneration Research 2025年第3期20卷 740-750页

作者： Yuchen zhang Yiqing Chen Cheng Zhuang Jingxuan Qi Robert Chunhua Zhao jiao Wang School of Life Sciences Shanghai UniversityShanghaiChina School of Medicine Shanghai UniversityShanghaiChina Institute of Basic Medical Sciences Chinese Academy of Medical Sciences School of Basic MedicinePeking Union Medical CollegeBeijingChina Center of Excellence in Tissue Engineering Chinese Academy of Medical SciencesBeijingChina Beijing Key Laboratory of New Drug Development and Clinical Trial of Stem Cell Therapy BeijingChina

Lipid droplets serve as primary storage organelles for neutral lipids in neurons,glial cells,and other cells in the nervous *** droplet formation begins with the synthesis of neutral lipids in the endoplasmic ***,lipid droplets were recognized for their role in maintaining lipid metabolism and energy homeostasis;however,recent research has shown that lipid droplets are highly adaptive organelles with diverse functions in the nervous *** addition to their role in regulating cell metabolism,lipid droplets play a protective role in various cellular stress ***,lipid droplets exhibit specific functions in neurons and glial *** of lipid droplet formation leads to cellular dysfunction,metabolic abnormalities,and nervous system *** review aims to provide an overview of the role of lipid droplets in the nervous system,covering topics such as biogenesis,cellular specificity,and ***,it will explore the association between lipid droplets and neurodegenerative *** the involvement of lipid droplets in cell metabolic homeostasis related to the nervous system is crucial to determine the underlying causes and in exploring potential therapeutic approaches for these diseases.

关键词： Alzheimer's disease lipid droplet biogenesis lipid droplets lipid metabolism nervous system neurodegenerative disorders oxidative stress Parkinson's disease

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超声法制备碳量子点发光性能的影响因素分析

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光谱学与光谱分析 2017年第11期37卷 3354-3359页

作者：任林娇张培齐汝宾殷婧刘帅张吉涛陈青华姜利英郑州轻工业学院电气信息工程学院河南郑州450002

超声法制备碳量子点过程简单,成本低廉,不易产生二次污染,应用前景广泛。为优化超声法制备碳量子点的各工艺参数,制备了关键工艺参数不同的碳量子点样品,测试其发射与激发光谱,分析了量子点浓度,溶剂种类,辅助剂种类、浓度,超声功率、... 详细信息

超声法制备碳量子点过程简单,成本低廉,不易产生二次污染,应用前景广泛。为优化超声法制备碳量子点的各工艺参数,制备了关键工艺参数不同的碳量子点样品,测试其发射与激发光谱,分析了量子点浓度,溶剂种类,辅助剂种类、浓度,超声功率、时间等参数对碳量子点发光性能影响。结果表明超声法制备的碳量子点具有激发光波长依赖性,发射峰位置随激发波长的变化而发生明显改变;碳量子点浓度增加,发光强度由于非辐射能量传递和团聚作用,先增大后减小;由于溶剂效应,碳量子点在乙醇中比在水中发光强度更强,波长更短,且浓度越大时波峰移动越明显;相比盐酸,以NaOH为辅助剂制备的碳量子点表面钝化程度高,发光强度强;增加辅助剂NaOH浓度可提高量子点表面钝化程度,增大发光强度;同等时间下增加超声功率或同等功率下适量增加超声时间,可制备更多的碳量子点样品,但超声时间过长,碳量子点容易发生团聚猝灭现象。以上影响因素分析为超声法制备碳量子点的工艺参数优化提供了理论基础,有利于碳量子点大规模低成本的生产应用。

关键词：碳量子点超声发射光谱影响因素

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叶片水分输导能力限制热带蕨的光合作用(英文)

叶片水分输导能力限制热带蕨的光合作用(英文)

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生态文明建设中的植物学：现在与未来——中国植物学会第十五届会员代表大会暨八十周年学术年会

作者： Shi-Bao zhang Mei Sun Kun-Fang Cao Hong Hu jiao-lin zhang Key Laboratory of Economic Plants and Biotechnology Kunming Institute of Botany Chinese Academy of Sciences Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical Garden Chinese Academy of Sciences

Ferns are important components of the forest flora, having critical functions in ecosystem processes, especially in tropical rainforests. Their remarkable degree of diversity and abundance reflect their ecological success in both the past and present. However, ferns inherently have slower growth rates and lower photosynthetic potentials than angiosperms. Low photosynthetic rate of a species can be resulted from a series of biotic and abiotic factors, such as supply of water and nutrients. Up to date, the primary determinant of photosynthetic potential in fern is not fully understood. In the present study, we used a phylogenetically comparative method to investigate 24 leaf traits of 30 tropical ferns in a common garden. The objectives were to examine the correlated evolution among functional traits, and attempt to disentangle the relative effects of water transport capacity and nutrient concentration on photosynthesis of these tropical ferns. Compared with epiphytic ferns, terrestrial ferns had higher silicon concentration, vein density (D vein ), stomatal density (SD), stomatal conductance (g s ), and photosynthetic capacity (A max ), but lower values for epidermal thickness (LET) and leaf thickness (LT). Across species, both area-based A max and mass-based A max were positively correlated with D vein and g s , but not with leaf element concentrations, LT and LET. SD correlated positively with area-based A max , D vein and g s , with the correlation between SD and D vein remaining significant after phylogenetic correction. Leaf water content showed significant correlations with LT and LET. Our results provide evidence that low A max of the studied ferns is more constrained by water transport capacity than by nutrients. These findings add new insights into the evolutionary correlations among traits involving carbon and water economy in ferns.

关键词： Fern leaf traits nutrient photosynthesis water transport vein density

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Flexible Graphene Field‑Effect Transistors and Their Application in Flexible Biomedical Sensing

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Nano-Micro Letters 2025年第2期17卷 252-313页

作者： Mingyuan Sun Shuai Wang Yanbo Liang Chao Wang Yunhong zhang Hong Liu Yu zhang lin Han Institute of Marine Science and Technology Shandong UniversityQingdao 266237ShandongPeople’s Republic of China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100ShandongPeople’s Republic of China School of Integrated Circuits Shandong UniversityJinan 250100ShandongPeople’s Republic of China Shandong Engineering Research Center of Biomarker and Artificial Intelligence Application Jinan250100ShandongPeople’s Republic of China

Flexible electronics are transforming our lives by making daily activities more *** to this innovation are field-effect transistors(FETs),valued for their efficient signal processing,nanoscale fabrication,low-power consumption,fast response times,and ***,known for its exceptional mechanical properties,high electron mobility,and biocompatibility,is an ideal material for FET channels and *** combination of graphene and FETs has given rise to flexible graphene field-effect transistors(FGFETs),driving significant advances in flexible electronics and sparked a strong interest in flexible biomedical ***,we first provide a brief overview of the basic structure,operating mechanism,and evaluation parameters of FGFETs,and delve into their material selection and patterning *** ability of FGFETs to sense strains and biomolecular charges opens up diverse application *** specifically analyze the latest strategies for integrating FGFETs into wearable and implantable flexible biomedical sensors,focusing on the key aspects of constructing high-quality flexible biomedical ***,we discuss the current challenges and prospects of FGFETs and their applications in biomedical *** review will provide valuable insights and inspiration for ongoing research to improve the quality of FGFETs and broaden their application prospects in flexible biomedical sensing.

关键词： Flexible Graphene Field-effect transistor Wearable Implantable Biosensor

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Treadmill exercise in combination with acousto-optic and olfactory stimulation improves cognitive function in APP/PS1 mice through the brain-derived neurotrophic factor-and Cygb-associated signaling pathways

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Neural Regeneration Research 2025年第9期20卷 2706-2726页

作者： Biao Xiao Chaoyang Chu Zhicheng lin Tianyuan Fang Yuyu Zhou Chuxia zhang Jianghui Shan Shiyu Chen Liping Li Department of Physiology and Pharmacology Health Science CenterNingbo UniversityNingboZhejiang ProvinceChina Ningbo Key Laboratory of Behavioral Neuroscience Health Science CenterNingbo UniversityNingboZhejiang ProvinceChina Key Laboratory of Addiction Research of Zhejiang Province NingboZhejiang ProvinceChina

A reduction in adult neurogenesis is associated with behavioral abnormalities in patients with Alzheimer's ***,enhancing adult neurogenesis represents a promising therapeutic approach for mitigating disease symptoms and ***,nonpharmacological interventions aimed at inducing adult neurogenesis are currently *** individual non-pharmacological interventions,such as aerobic exercise,acousto-optic stimulation,and olfactory stimulation,have shown limited capacity to improve neurogenesis and cognitive function in patients with Alzheimer's disease,the therapeutic effect of a strategy that combines these interventions has not been fully *** this study,we observed an age-dependent decrease in adult neurogenesis and a concurrent increase in amyloid-beta accumulation in the hippocampus of amyloid precursor protein/presenilin 1 mice aged 2-8 *** deposition became evident at 4 months,while neurogenesis declined by 6 months,further deteriorating as the disease ***,following a 4-week multifactor stimulation protocol,which encompassed treadmill running(46 min/d,10 m/min,6 days per week),40 Hz acousto-optic stimulation(1 hour/day,6 days/week),and olfactory stimulation(1 hour/day,6 days/week),we found a significant increase in the number of newborn cells(5'-bromo-2'-deoxyuridine-positive cells),immature neurons(doublecortin-positive cells),newborn immature neurons(5'-bromo-2'-deoxyuridine-positive/doublecortin-positive cells),and newborn astrocytes(5'-bromo-2'-deoxyuridine-positive/glial fibrillary acidic protein-positive cells).Additionally,the amyloid-beta load in the hippocampus *** findings suggest that multifactor stimulation can enhance adult hippocampal neurogenesis and mitigate amyloid-beta neuropathology in amyloid precursor protein/presenilin 1 ***,cognitive abilities were improved,and depressive symptoms were alleviated in amyloid precursor protein/presenilin 1 mice

关键词： acousto-optic stimulation adult neurogenesis Alzheimer's disease amyloid precursor protein/presenilin 1 mice amyloid-beta deposition brain cell apoptosis cognitive impairment depression-like behavior involuntary treadmill exercise olfactory stimulation serum metabolites

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Non-coding RNAs in acute ischemic stroke:from brain to periphery

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Neural Regeneration Research 2025年第1期20卷 116-129页

作者： Shuo Li Zhaohan Xu Shiyao zhang Huiling Sun Xiaodan Qin lin Zhu Teng Jiang Junshan Zhou Fuling Yan Qiwen Deng Department of Neurology Nanjing First HospitalNanjing Medical UniversityNanjingJiangsu ProvinceChina Department of Neurology Zhongda HospitalSchool of MedicineSoutheast UniversityNanjingJiangsu ProvinceChina General Clinical Research Center Nanjing First HospitalNanjing Medical UniversityNanjingJiangsu ProvinceChina

Acute ischemic stroke is a clinical emergency and a condition with high morbidity,mortality,and *** predictive,diagnostic,and prognostic biomarkers and effective therapeutic targets for acute ischemic stroke remain *** innovations in high-throughput gene sequencing analysis,many aberrantly expressed non-coding RNAs(ncRNAs)in the brain and peripheral blood after acute ischemic stroke have been found in clinical samples and experimental *** expressed ncRNAs in the post-stroke brain were demonstrated to play vital roles in pathological processes,leading to neuroprotection or deterioration,thus ncRNAs can serve as therapeutic targets in acute ischemic ***,distinctly expressed ncRNAs in the peripheral blood can be used as biomarkers for acute ischemic stroke prediction,diagnosis,and *** particular,ncRNAs in peripheral immune cells were recently shown to be involved in the peripheral and brain immune response after acute ischemic *** this review,we consolidate the latest progress of research into the roles of ncRNAs(microRNAs,long ncRNAs,and circular RNAs)in the pathological processes of acute ischemic stroke–induced brain damage,as well as the potential of these ncRNAs to act as biomarkers for acute ischemic stroke prediction,diagnosis,and *** from this review will provide novel ideas for the clinical application of ncRNAs in acute ischemic stroke.

关键词： acute ischemic stroke apoptosis blood–brain barrier damage circular RNAs excitatory toxicity long non-coding RNAs microRNAs neuroinflammation non-coding RNAs oxidative stress

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