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相关概念视频

Adaptations that Reduce Water Loss01:57

Adaptations that Reduce Water Loss

25.6K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
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Responses to Heat and Cold Stress02:45

Responses to Heat and Cold Stress

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Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
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Responses to Drought and Flooding02:41

Responses to Drought and Flooding

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Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
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Light Acquisition02:16

Light Acquisition

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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Introduction to Plant Diversity02:22

Introduction to Plant Diversity

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From Water to Land
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Responses to Salt Stress02:02

Responses to Salt Stress

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Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
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相关实验视频

Updated: Jul 9, 2025

Author Spotlight: Leaf Trait Analysis for Climate and Ecology Reconstruction in Modern and Ancient Plant Communities
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Author Spotlight: Leaf Trait Analysis for Climate and Ecology Reconstruction in Modern and Ancient Plant Communities

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功能特征和干旱战略预测了叶子的耐热性.

Justin M Valliere1,2, Kekoa C Nelson2, Marco Castañeda Martinez2

  • 1Department of Plant Sciences, University of California Davis, One Shields Ave., Davis, CA 95616, USA.

Conservation physiology
|November 29, 2023
PubMed
概括

气候变化导致的气温上升威胁到本地植物,特别是在城市. 植物特征和干旱战略可以预测哪些物种最容易受到热应激的影响,这有助于保护工作.

关键词:
叶绿素的光效应 叶绿素光效应地中海的生态系统气候变化 气候变化 气候变化生态生理学 生态生理学功能性特征 功能性特征 功能性特征热应激是一种热应激.光合作用 光合作用.温度反应曲线的温度反应曲线.

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Relating Stomatal Conductance to Leaf Functional Traits
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Measurement of Leaf Hydraulic Conductance and Stomatal Conductance and Their Responses to Irradiance and Dehydration Using the Evaporative Flux Method EFM
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Measurement of Leaf Hydraulic Conductance and Stomatal Conductance and Their Responses to Irradiance and Dehydration Using the Evaporative Flux Method EFM

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相关实验视频

Last Updated: Jul 9, 2025

Author Spotlight: Leaf Trait Analysis for Climate and Ecology Reconstruction in Modern and Ancient Plant Communities
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Relating Stomatal Conductance to Leaf Functional Traits
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Relating Stomatal Conductance to Leaf Functional Traits

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Measurement of Leaf Hydraulic Conductance and Stomatal Conductance and Their Responses to Irradiance and Dehydration Using the Evaporative Flux Method EFM
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Measurement of Leaf Hydraulic Conductance and Stomatal Conductance and Their Responses to Irradiance and Dehydration Using the Evaporative Flux Method EFM

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科学领域:

  • 生态生态学 生态生态学
  • 植物生理学 植物生理学
  • 气候变化生物学 气候变化生物学

背景情况:

  • 气候变化和城市热岛增加了本地植物的热压力.
  • 了解植物对热量的反应对于生物多样性和土地管理至关重要.
  • 以前的研究强调了植物对温度上升的脆弱性.

研究的目的:

  • 评估温度升高对各种本地木质植物物种的影响.
  • 为了确定物种的特征和干旱策略是否能预测耐热性.
  • 为一个变暖的世界提供保护和恢复策略的信息.

主要方法:

  • 评估了加利福尼亚州南部城市保护区土著木质植物的耐热性.
  • 使用叶绿素光作为叶子耐热性的指标.
  • 分析了叶子水平的功能特征和干旱策略.

主要成果:

  • 在不同干旱策略的物种中,叶子耐热性差异很大.
  • 具有高特异叶面积和透气率,低用水效率的物种最容易受到影响.
  • 常青物种具有硬质叶和高用水效率显示出更大的耐热性.

结论:

  • 叶子的功能特征和干旱策略是植物对热应激脆弱性的关键预测因素.
  • 城市化和气候变化可能会使许多本地物种超出其耐热性极限.
  • 这项研究提供了关键数据,以指导在气候变化中的植物保护和恢复.