Original video: https://youtu.be/uGTstT4zCuo
Delivered on: 21 DEC 2021
This video delves into the fascinating world of plant transport, focusing on the source-sink relationship and the intricate mechanisms of phloem transport. 🌿 We'll explore how plants move essential nutrients and photosynthetic products throughout their bodies to support growth and development.
What you'll learn:
Source-Sink Concept: Understand the roles of source organs (mature leaves, storage organs) and sink organs (growing tissues, roots, fruits) in plant nutrient distribution.
Phloem Transport (Translocation): Explore the process of phloem translocation, where sugars and other organic compounds are transported from source to sink.
Phloem Structure and Function: We'll examine the specialized cells within the phloem, including sieve elements and companion cells, and how they facilitate transport.
Pressure-Flow Model: Discover the pressure-flow model, the mechanism that drives long-distance transport in the phloem.
Phloem Loading and Unloading: Learn about the different mechanisms of phloem loading (apoplastic, symplastic, passive) and unloading, and the role of transport proteins.
Sucrose as the Transport Sugar: Understand why sucrose is the primary sugar transported in the phloem and its advantages over other sugars.
Regulation of Translocation: Explore the factors that influence the rate and direction of phloem transport, including proximity, developmental stage, and vascular connections.
Keywords: Plant physiology, source-sink relationship, phloem transport, translocation, sieve elements, companion cells, pressure-flow model, phloem loading, phloem unloading, sucrose, plant transport, vascular tissue, science education.
Attribution 4.0 International — CC BY 4.0 - Creative Commons
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