搜索结果: 1-15 共查到“Cold”相关记录462条 . 查询时间(0.125 秒)
中国科学院大气物理研究所陈华玉等–ERL: 骤冷（flash-cold）新指标揭示2023年12月天气鞭打事件（图）
陈华玉 地球系统 数值 监测
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2025/1/9
2023年12月中旬，一场强寒潮席卷中国大部分地区，标志着一次“天气鞭打事件”（Weather Whiplash Event）的发生（图1）。天气鞭打事件指气温从极端暖（冷）到极端冷（暖）的快速剧烈变化。然而，传统识别指标（如温度方差）难以充分反映这些事件中气温演变的特征。
南京农业大学农学院《New Phytologist》发表植物环境适应分子遗传研究课题组“A major gene for chilling tolerance variation in Indica rice codes for a kinase OsCTK1 that phosphorylates multiple substrates under cold”（图）
植物环境 分子遗传
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2024/4/29
水稻起源于热带和亚热带，对低温十分敏感，当温度低于15℃时水稻便无法正常生长。有统计显示，每年低温冷害导致我国水稻减产约50亿kg。近年来，因直播稻大面积推广以及水稻种植区域不断由热带、亚热带向高海拔、高纬度地区扩张，水稻遭受低温冷害的频率有增加趋势。低温冷害已成为限制我国水稻生产的一大瓶颈。因此，挖掘调控水稻耐冷性的关键基因，研究其作用机理，对防控水稻低温冷害具有重要意义。
TRANSTHYRETIN-LIKE and BYPASS1-LIKE co-regulate growth and cold tolerance in Arabidopsis
BYPASS1-LIKE TRANSTHYRETIN-LIKE Plant growth Cold tolerance Arabidopsis
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2024/1/11
Background: Cold stress inhibits normal physiological metabolism in plants, thereby seriously affecting plant development. Meanwhile, plants also actively adjust their metabolism and development to ad...
Maternal transmission of the epigenetic ‘memory of winter cold’ in Arabidopsis
Arabidopsis memory of winter cold epigenetic environmental memories chromatin state
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2023/12/21
Some plants can ‘remember’ past environmental experience to become adapted to a given environment. For instance, after experiencing prolonged low-temperature exposure in winter (winter cold), vernaliz...
Developmental plasticity in Arabidopsis thaliana under combined cold and water deficit stresses during flowering stage
Acclimation Bolting Cold Flower size Terminal combined stress Water deficit
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2023/12/11
In nature, plants are exposed to multiple and simultaneous abiotic stresses that influence their growth, development, and reproduction. In the last years, the study of combined stresses has aroused th...
The lncRNA APOLO interacts with the transcription factor WRKY42 to trigger root hair cell expansion in response to cold
root hairs cell expansion long noncoding RNAs APOLO transcription factors RHD6 43 WRKY42 cold temperature
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2023/12/8
Plant long noncoding RNAs (lncRNAs) have emerged as important regulators of chromatin dynamics, impacting on transcriptional programs leading to different developmental outputs. The lncRNA AUXIN REGUL...
Population Dynamics of Juniperus macropoda Bossier Forest Ecosystem in Relation to Soil Physico-Chemical Characteristics in the Cold Desert of North-Western Himalaya
cold desert soil nutrients biomass carbon density elevational ranges natural regeneration
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2023/12/1
Juniperus macropoda is the only tree species of a cold desert ecosystem that is experiencing high anthropogenic pressure and has a poor regeneration status due to harsh environmental conditions. Due t...
Mitochondrial structure and respiratory metabolism in cold resistance of alfalfa seedling root（图）
苜蓿 抗寒性 秋眠性
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2024/5/30
多年生苜蓿以根的形式越冬，因此，苜蓿的抗寒性以及成功越冬的关键在于其根部的抗寒性。在没有叶绿体结构不能进行光合作用的根部，呼吸作用是维持根部细胞生长所需能量ATP的唯一途径。新疆农业大学刘美君副教授团队选用不同秋眠级的新牧4号(秋眠级为2) 和甘农5号(秋眠级为8) 的紫花苜蓿为试验材料，研究发现，低温显著影响了苜蓿根系细胞呼吸代谢，细胞线粒体电子传递链复合体复合体II、III和IV受抑明显致使氧...
南京农业大学农学院《New Phytologist》发表张文利课题组“R‐loops act as regulatory switches modulating transcription of COLD‐responsive genes in rice”（图）
张文利 气候变化 分子机制 作物生长
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2023/10/28
随着全球气候变化的不断加剧，低温冻害和冷害已经成为影响农作物生长的一个重要自然胁迫因素。冷胁迫通常影响农作物正常的生长发育进程，严重时导致减产甚至颗粒无收。因此，作物冷应答分子机制研究可为作物耐冷分子育种提供理论参考。植物R-loop在不同的细胞活动中发挥重要作用，包括发育调控和胁迫应答等。然而，在低温敏感型作物如水稻中，R-loop介导冷胁迫应答的分子机制仍鲜有报道。
兰州大学大气科学学院教授编著的《Climatology in Cold Regions》近日出版发行（图）
《Climatology in Cold Regions》 出版发行 兰州大学大气科学学院
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2023/9/13
近日，兰州大学大气科学学院王澄海教授编著的《Climatology in Cold Regions》（Print ISBN: 9781119702658），由美国Wiley出版公司出版发行。
The grain yield regulator NOG1 plays a dual role in latitudinal adaptation and cold tolerance during rice domestication
NOG1 cold stress domestication differentially expressed genes RNA-seq
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2023/4/21
Rice originated in tropical and subtropical regions and is distributed worldwide. Low temperature is one of the most critical abiotic stresses affecting grain yield and geographical distribution of ri...
Want to know how cold it was in 1490? Ask a tree（图）
树木年轮 极端气候事件 森林生态学
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2023/6/25
Sometimes getting to where you want to go is a matter of finding the right guide.
Scientists expose the cold heart of landfalling hurricanes
hurricane extratropical cyclone extreme weather predict weather
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2021/8/4
Fearsome and powerful, hurricanes can wreak massive destruction when they hit land. But while most hurricanes then weaken, others can strengthen again into extratropical cyclones and caused further da...
Characterizing volatile metabolites in raw Pu’er tea stored in wet-hot or dry-cold environments by performing metabolomic analysis and using the molecular sensory science approach
生普洱茶 代谢组学分析 干冷环境 湿热环境 气味标记
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2023/4/20
The aroma profile of raw pu’er tea (RPT) depends on its storage duration (2–10 years) and storage conditions (wet-hot or dry-cold environment). We analyzed the major odorants of RPT samples by perform...
'Cold spots,' not hotspots, key to rapid biodiversification（图）
Cold spots hotspots key rapid biodiversification
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2020/12/18
The Amazon rainforest may be a hotspot for animal and plant diversity, but Louisiana State University scientists report that new species form there less often than previously thought. Places such as d...