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Phloem and Sugar Transport02:02

Phloem and Sugar Transport

39.7K
Like many living organisms, plants have tissues that specialize in specific plant functions. For example, shoots are well adapted to rapid growth, while roots are structured to acquire resources efficiently. However, sugar production is primarily restricted to the photosynthetic cells that reside in the leaves of angiosperm plants. Sugar and other resources are transported from photosynthetic tissues to other specialized tissues by a process called translocation.
39.7K
Fruit Development, Structure, and Function01:58

Fruit Development, Structure, and Function

24.9K
Fruits form from a mature flower ovary. As seeds develop from the ovules contained within, the ovary wall undergoes a series of complex changes to form fruit. In some fruits, such as soybeans, the ovary wall dries; in other fruits, such as grapes, it remains fleshy. In some cases, organs other than the ovary contribute to fruit formation; such fruits are called accessory fruits.
24.9K
Xylem and Transpiration-driven Transport of Resources02:03

Xylem and Transpiration-driven Transport of Resources

26.3K
The xylem of vascular plants distributes water and dissolved minerals that are taken up by the roots to the rest of the plant. The cells that transport xylem sap are dead upon maturity, and the movement of xylem sap is a passive process.
26.3K
Short-distance Transport of Resources02:12

Short-distance Transport of Resources

17.4K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
17.4K
Osmosis00:47

Osmosis

192.4K
Approximately 60% to 95% of the weight of living organisms is attributed to water. Therefore, maintaining appropriate water balance within cells is of paramount importance. Osmosis is the movement of water across a semipermeable membrane, such as a cell’s plasma membrane. In living organisms, water plays a crucial role as a solvent—a molecule that dissolves other molecules.
192.4K
Osmosis01:30

Osmosis

10.3K
Osmosis is the movement of free water molecules through a semipermeable membrane.  The water's concentration gradient across the membrane is inversely proportional to the solutes' concentration. Whereas diffusion transports material across membranes and within cells, osmosis transports only water across a membrane, and the membrane limits the diffusion of solutes in the water. Osmosis is a special case of diffusion.
Water, like other substances, moves from a high concentration of...
10.3K

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相关实验视频

Updated: Jan 13, 2026

Author Spotlight: Sieving Fruit Pulp to Detect Immature Tephritid Fruit Flies in the Field
04:21

Author Spotlight: Sieving Fruit Pulp to Detect Immature Tephritid Fruit Flies in the Field

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从水果中逆流动果汁的流动.

Yangfan Chai1, Runqing Zhang2, Qian Wang3

  • 1College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China.

Plants (Basel, Switzerland)
|January 10, 2026
PubMed
概括
此摘要是机器生成的。

反向的果汁流,即果汁从水果向其他植物部位的移动,是由光波或干旱引起的水失衡引发的. 这种果汁流出增强了植物的抗干旱能力,挑战了传统的植物科学理论.

关键词:
植物可穿戴传感器逆流水液的流量可以逆流.土壤-植物-大气连续体.源头沉没理论水平衡水平衡水平衡水平衡

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Fruit Volatile Analysis Using an Electronic Nose
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Tomato Analyzer: A Useful Software Application to Collect Accurate and Detailed Morphological and Colorimetric Data from Two-dimensional Objects
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相关实验视频

Last Updated: Jan 13, 2026

Author Spotlight: Sieving Fruit Pulp to Detect Immature Tephritid Fruit Flies in the Field
04:21

Author Spotlight: Sieving Fruit Pulp to Detect Immature Tephritid Fruit Flies in the Field

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Fruit Volatile Analysis Using an Electronic Nose
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Fruit Volatile Analysis Using an Electronic Nose

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Tomato Analyzer: A Useful Software Application to Collect Accurate and Detailed Morphological and Colorimetric Data from Two-dimensional Objects
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科学领域:

  • 植物生理学 植物生理学
  • 植物水关系 植物水关系
  • 植物信号传输 植物信号传输

背景情况:

  • 汁液流对于运输水,营养素和果实发育所必需的信号至关重要.
  • 从水果到其他器官的逆液液流被观察到,但由于研究方法有限,人们对其了解甚少.

研究的目的:

  • 调查西瓜植物逆液流的机制和触发因素.
  • 建立一个多式联络数据框架,用于分析液液流动力学.
  • 挑战植物生理学的传统源沉理论.

主要方法:

  • 使用新型植物可穿戴传感器进行集成实时液液流测量.
  • 同步的环境监测,以与外部因素关联液液流.
  • 长期干旱压力实验,以评估植物反应.

主要成果:

  • 确定了植物供水-消费不平衡是逆流水流的主要内源性原因.
  • 确定了快速的光强度激增和土壤干旱作为关键的外源触发因素.
  • 证明逆流水液通过水的再分配增强了植物的抗干旱能力.

结论:

  • 反向液液流是植物对水失衡和环境压力的重要反应.
  • 这些发现完善了源-水槽范式,突出了水果在简单的水槽之外的作用.
  • 这项研究为植物耐旱机制提供了新的见解.