lesson 2: transport and translocation of water and solutes
TRANSCRIPT
![Page 1: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/1.jpg)
Bachelor 2: Plant physiology
Lesson 2:
TRANSPORT AND TRANSLOCATION
OF WATER AND SOLUTES
Instructor: LE Thi Van Anh
![Page 2: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/2.jpg)
By the end of this course, students are able to:
- Describe some basic terms: transportation, translocation and
transpiration
- Understand 2 processes: passive and active cellular transport
- Describe the different routes of water and solute mineral absorption
from soil to root
- Analyze the different forces ensuring the transport in xylem
- Describe the process of transpiration through stomata
Learning outcome
2
![Page 3: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/3.jpg)
Concept:
3
What kind of transport in plants:
………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
What must be transported in plants?…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
![Page 4: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/4.jpg)
Focusing…
4
1) Cellular transport 2) Water & Mineral Absorption of Roots 3) Transport of Xylem Sap 4) Control of Transpiration 5) Translocation of Phloem Sap
![Page 5: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/5.jpg)
Cellular transport…
5
Passive Active ………………………………………………………. …………………………………………… ………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
![Page 6: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/6.jpg)
Cellular transport: passive water transport…
6
Moves from high H2O potential to a low H2O potential
Flaccid cell dropped into 0.1M sucrose solution
Water come into cell
Turgid cell
Water go out
Add more sucrose
![Page 7: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/7.jpg)
Cellular transport: passive solute transport…
7
Solutes move from greater to lower osmolarity
![Page 8: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/8.jpg)
Permeability of cellular membrane
8
Why???
![Page 9: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/9.jpg)
Cellular transport: transport protein
9
Three classes of membrane transport protein
![Page 10: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/10.jpg)
Hypothetical model for cation transport by a pump: Energy comes from ATP hydrolysis « primary active transport »
Cellular transport: carrier protein
![Page 11: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/11.jpg)
Two types of secondary transport
Cellular transport: pump protein
![Page 12: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/12.jpg)
12
Overview of the various transport processes on the plasma membrane and tonoplast of plant cells
![Page 13: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/13.jpg)
Water Absorption of Roots
13
![Page 14: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/14.jpg)
Water Absorption of Roots
14
………………………………………………………. …………………………………………… ………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
![Page 15: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/15.jpg)
Root pressure
15
- Force (pressure) caused by water bulk flow from soil to xylem. - Manometer can measure positive pressure about 0.05 to 0.2 MPa
Guttation: exudation of xylem sap through hydrathodes
![Page 16: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/16.jpg)
Ion Absorption of Roots and xylem loading
16
1. Cortex: …………………………………………………………………………………………………………………………………………
2. From endodermis to xylem parenchyma: …………………………………………………………………………………………………………………………………………
3. Enter to tracheary elements …………………………………………………………………………………………………………………………………………
![Page 17: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/17.jpg)
Transport in xylem
17
How does water move up to xylem? ………………………………………………………. ……………………………………………
………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
![Page 18: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/18.jpg)
Cohesion-‐tension theory
18
……………………………………………………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………………
![Page 19: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/19.jpg)
Transpira6on: water movement to atmosphere
19
………………………………………………………. …………………………………………… ………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
![Page 20: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/20.jpg)
Types of transpira6on
20
How many types of transpiration?
![Page 21: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/21.jpg)
Transpira6on through stomata
21
………………………………………………………. …………………………………………… ………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
![Page 22: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/22.jpg)
Water pathway through the leaf
22
![Page 23: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/23.jpg)
Transpira6on ra6o
23
Transpiration ratio (TR) = water transpired/carbon dioxide assimilated For C3 plant, TR= 1/400
TR is used to evaluate the “water use efficiency”
How to increase “water use efficiency”?
![Page 24: Lesson 2: TRANSPORT AND TRANSLOCATION OF WATER AND SOLUTES](https://reader031.vdocuments.us/reader031/viewer/2022013005/61cc8e4d3f6b375bb3007b6c/html5/thumbnails/24.jpg)
Adapta6on for using water efficiently
24
………………………………………………………. …………………………………………… ………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………