Results 31 to 40 of about 4,238 (159)

Aridity and grazing are associated with reduced trait complementarity and higher invasion intensity of Solanum rostratum in native plant communities

open access: yesFunctional Ecology, Volume 39, Issue 11, Page 3255-3268, November 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The biotic resistance hypothesis (BRH) of Elton posits that diverse communities are more resistant to biological invasions. While the effects of climatic stresses and human disturbances on community invasibility have been extensively studied individually, their combined
Kai Shi, Misbah Naz, Chi Zhang, Hua Shao
wiley   +1 more source

How to talk about crises? Leaders' narrative strategies during the COVID‐19 vaccination campaign in Italy and France

open access: yesPolicy Studies Journal, Volume 53, Issue 4, Page 994-1013, November 2025.
Abstract Defined by threat, urgency, and uncertainty, crises produce opportunities for government leaders to exploit and create meaning around their policy decisions in such unstable circumstances. In narrating their preferred policy solutions, one of the tools governments can use is relying on evidence‐based information.
Laura Mastroianni, Stefania Profeti
wiley   +1 more source

Functional Characterization of AtST39 in Stress Response and AtMPA Mediating Pollen Development [PDF]

open access: yes, 2012
基因芯片显示番茄细菌性叶斑病原菌Pseudomonassyringaepv.tomatoDC3000(PstDC3000),干旱、冷和盐等逆境处理及在开花关键基因lfy突变体中都能够上调AtST39(At3g46110)基因表达;AtMPA(At1g05577)在拟南芥单核花粉粒向三核花粉发育的过程中特异性表达。但是AtST39参与胁迫和AtMPA在介导花粉发育的分子机制知之甚少。我们主要对AtST39进行了探索研究,结果如下: (1)NCBI数据库显示YWC基因家族共有185个蛋白家族成员 ...
肖世民
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氯化胆碱对干旱胁迫下地黄抗氧化代谢及梓醇含量的影响

open access: yesShuitu Baochi Xuebao, 2007
用100,300,500 mg/L的氯化胆碱(CC)水溶液喷施干旱胁迫下的地黄叶片,研究了CC对干旱胁迫下地黄叶片抗氧化代谢、细胞膜稳定性、叶绿素荧光参数及块根中梓醇含量的影响.结果表明,叶面喷施CC有效调节了干旱胁迫下地黄叶片的抗氧化酶SOD、APX、CAT的活性,降低了叶片MDA的含量和相对电导率,减缓了叶绿素的降解.因此,使地黄叶片在干旱胁迫条件下维持较高的通过PSI的电子传递速率(Fv/Fo)、PS Ⅱ最大光化学效率(Fv/Fm)、实际光化学效率(ΦPS Ⅱ)和光化学猝灭系数(qP ...
祁春苗, 赵会杰, 张秀月
doaj   +2 more sources

Adenosine Monophosphate-Activated Protein Kinase (AMPK) and Calreticulin (CRT) Genes in the Mud Crab, Scylla paramamosain: cDNA Cloning and Profiles under Low Temperature Stress [PDF]

open access: yes, 2016
低温胁迫会影响生物体内多个生理过程,如能量代谢和免疫应答等;而生物体内有多种物质参与低温胁迫调节。AMP活化蛋白激酶(AMP-activatedproteinkinase,AMPK)的主要功能为促进ATP产物的积累和减少ATP的消耗,使得机体内积累大量的ATP以供生命活动的能量需要。钙网蛋白(calreticulin,CRT)主要存在于内质网和肌浆网,不仅作为细胞内质网的分子伴侣参与新生蛋白的折叠及调节细胞内Ca2+平衡,而且具有促进细胞黏附、调节免疫应答等重要作用。为探讨这2个基因在拟穴青蟹 ...
黄陈翠
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Assessment of the Threat Status of Bent‐Toed Geckos (Cyrtodactylus) in Indochina: Implementation of the One Plan Approach

open access: yesIntegrative Conservation, Volume 4, Issue 3, Page 464-475, September 2025.
This study investigates the diversity, conservation status, distribution, and discovery rate of 84 Cyrtodactylus species in Indochina. Despite rising discovery rates, many species are unassessed, with over half unprotected and 90.5% endemic. This study suggests expanding protected areas and implementing an integrated approach to conservation with IUCN ...
Matilda Julia Lasota   +6 more
wiley   +1 more source

Effect of Salt Stress on Physiological Characterization of Zygosacchromyces rouxii(盐胁迫对鲁氏酵母菌生理特性的影响) [PDF]

open access: yesShipin kexue jishu xuebao, 2019
The effects of salt stress on the physiological characterization of Zygosaccharomyces rouxii CGMCC 3791 were studied, the results showed that salt stress inhibited cell growth and the ethanol content increased from 11.64mg to 19.20mg (120g/L NaCl ...
WANG Dingkang(王定康)   +5 more
doaj   +1 more source

Mechanisms of Cadmium Tolerance and Detoxification in Sesuvium portulacastrum L. [PDF]

open access: yes, 2016
近年来由于电镀业、化工业、采矿业蓬勃发展导致大量镉进入水体、大气、土壤环境中,造成严重的镉污染问题,严重威胁生物生命安全。目前镉污染问题已经成为当今世界共同关注的环境问题之一,植物修复法作为一种“绿色”的污染治理手段,由于具有低成本、高净化效率等优点,成为国际上的热点研究领域。目前,植物修复方法的应用越来越广泛,但仍存在很大的局限性,大部分超累积植物生物量少,修复效果不理想,且只能适用于低盐土壤或淡水水域修复,而能够用于盐碱地、湿地及海水水域等盐度较高区域重金属修复的相关植物较少 ...
陈珍芳
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Reactive oxygen species act as signaling molecules to control root hair initiation and tip growth

open access: yesNew Phytologist, Volume 247, Issue 5, Page 2042-2048, September 2025.
Summary Root hairs (RHs) increase the surface area of roots, facilitating nutrient and water uptake and plant anchorage. RHs form from root epidermal cells and elongate by polar tip growth. Reactive oxygen species (ROS) have recently been implicated as important signals that drive RH formation and elongation using both genetic and imaging approaches ...
Megan E. Gerber   +2 more
wiley   +1 more source

Physiological and Proteomic Analyses in Responses of Mangrove Plant Kandelia obovata Seedling Leaves to Submergence Stress [PDF]

open access: yes, 2016
水淹是限制多数植物生长和发育的重要限制因子。红树植物是生活在滨海湿地的一类对水淹具有较高耐性的木本植物。近年来,在对红树林湿地的围垦和鱼塘养殖的开发过程中经常会造成对红树植物的严重水淹,甚至是长时间、整株植物的被淹(特别是对幼苗)。然而,红树植物对这种长时间、全淹胁迫的响应仍有待研究。在本研究中,基于蛋白质组学技术,我们采用红树植物秋茄(Kandeliaobovata)幼苗为实验材料,来探究红树植物秋茄耐受长时间、全淹胁迫的生理响应和分子机制。主要研究结果如下: (1)秋茄幼苗持续全淹处理 ...
李赞
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