Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

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.
25.6K
Primary and Secondary Growth in Roots and Shoots03:02

Primary and Secondary Growth in Roots and Shoots

57.3K
Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.
57.3K
Light Acquisition02:16

Light Acquisition

8.5K
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.
8.5K
Morphogenesis02:19

Morphogenesis

28.2K
Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.
28.2K
Regulation of Transpiration by Stomata02:04

Regulation of Transpiration by Stomata

28.3K
During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.
28.3K
C4 Pathway and CAM01:27

C4 Pathway and CAM

45.6K
Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...
45.6K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Dynamics of Expression Variability Contribute to Retention of Small-Scale vs. Whole-Genome Duplicates.

Genome biology and evolution·2026
Same author

Does genetic variation in controlled experiments predict phenology of wild plants?

Journal of evolutionary biology·2025
Same author

Genotype by Environment Interactions in Gene Regulation Underlie the Response to Soil Drying in the Model Grass Brachypodium distachyon.

Molecular biology and evolution·2025
Same author

Machine learning-enabled non-targeted metabolomics reveals nutritional and metabolic responses of Brachypodium distachyon to drought and elevated CO2.

Journal of experimental botany·2025
Same author

A machine learning-enabled approach to assess trade-offs between growth and stress tolerance in Pooideae grasses following domestication.

Journal of experimental botany·2025
Same author

Gene Regulatory Changes Associated With Phenological Transitions in an Ecologically Significant Tree Species.

Plant-environment interactions (Hoboken, N.J.)·2025

相关实验视频

Updated: Jul 12, 2025

Relating Stomatal Conductance to Leaf Functional Traits
11:09

Relating Stomatal Conductance to Leaf Functional Traits

Published on: October 12, 2015

19.1K

非结构性碳水化合物动态与不同环境下叶子发育的关系.

Meghan Blumstein1, Miranda Oseguera2, Theresa Caso-McHugh1

  • 1Civil and Environmental Engineering, Massachusetts Institute of Technology, 15 Vassar St., Cambridge, MA, 02139, USA.

The New phytologist
|October 26, 2023
PubMed
概括

非结构性碳水化合物 (NSCs) 可能充当分子时钟,信号温带森林树,如北方红树的叶子出来. 这一发现对于预测全球变暖导致的森林现象学变化至关重要.

关键词:
气候变化 气候变化 气候变化增长室的成长室遗传性 遗传性 遗传性非结构性碳水化合物现象学 (phenology) 是一种现象学.粉是一种粉.糖类 糖类 是一种糖类.

更多相关视频

Kinematic Analysis of Cell Division and Expansion: Quantifying the Cellular Basis of Growth and Sampling Developmental Zones in Zea mays Leaves
08:31

Kinematic Analysis of Cell Division and Expansion: Quantifying the Cellular Basis of Growth and Sampling Developmental Zones in Zea mays Leaves

Published on: December 2, 2016

10.9K
Measurement of Leaf Hydraulic Conductance and Stomatal Conductance and Their Responses to Irradiance and Dehydration Using the Evaporative Flux Method EFM
12:11

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

Published on: December 31, 2012

37.5K

相关实验视频

Last Updated: Jul 12, 2025

Relating Stomatal Conductance to Leaf Functional Traits
11:09

Relating Stomatal Conductance to Leaf Functional Traits

Published on: October 12, 2015

19.1K
Kinematic Analysis of Cell Division and Expansion: Quantifying the Cellular Basis of Growth and Sampling Developmental Zones in Zea mays Leaves
08:31

Kinematic Analysis of Cell Division and Expansion: Quantifying the Cellular Basis of Growth and Sampling Developmental Zones in Zea mays Leaves

Published on: December 2, 2016

10.9K
Measurement of Leaf Hydraulic Conductance and Stomatal Conductance and Their Responses to Irradiance and Dehydration Using the Evaporative Flux Method EFM
12:11

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

Published on: December 31, 2012

37.5K

科学领域:

  • 森林生态 森林生态
  • 植物生理学 植物生理学
  • 全球变化生物学

背景情况:

  • 温带森林的叶子发芽时间是受全球变化影响的关键春季事件.
  • 将现象学变异与环境线索联系在一起的确切机制尚不清楚.
  • 非结构性碳水化合物 (NSC) 的可用性被假设起到关键作用.

研究的目的:

  • 为了研究非结构性碳水化合物 (NSCs) 与北方红树 (Quercus rubra) 的叶子脱落时间之间的关系.
  • 检查温度,光周期和基因型对NSC动态和现象变异的影响.
  • 为了确定NSC是否可以作为触发芽的分子钟.

主要方法:

  • 北方红树 (Quercus rubra) 的树枝切片被用来测量芽发育期间的NSC.
  • 分支经历了一个因数实验,在八种基因型中使用不同的温度和光周期.
  • 在不同的现象阶段和实验条件下监测了叶子脱落时间和NSC度.

主要成果:

  • 尽管不同治疗方法的叶子脱落时间有显著差异,但NSC度在整个表相中保持一致.
  • 温和和热温度处理在相同的增长度日 (GDD) 中达到类似的NSC水平和表相,尽管相隔20天.
  • 与其他处理方法相比,冷处理只积累了GDD的一半,这表明温度对GDD积累的影响.

结论:

  • 在北方红树中,NSC模式与叶子发芽时间紧密协调.
  • NSCs可以充当内部分子时钟的功能,指示时间的进展以启动叶子的发育.
  • 了解NSC和芽之间的联系对于提高在气候变化中森林现象学的预测至关重要.