View allAll Photos Tagged Roottips
This is a Cortinarius from the subgenus Telamonia (Basidiomycota, Agaricales). The mycelium of these mushrooms is associated with roottips of trees; they are obligate symbionts and can't do without their partner tree. This species (id needs checking) was found under Betula (Birch).
Focus stack taken with an 80mm enlarger lens on bellows (ISO100, f/5.6, natural light); assembled in ZS (Dmap & Pmax). Uncropped image, about 47mm wide (0.75x on ff).
Allium root tip meristematic zone as seen through the 20x objective of an Olympus IS81 microscope. Biology students: Look at the large image and see if you can identify the different stages of mitosis visible in this image! ;-)
(Quadruple stain, prepared slide from General Biology Supply House, Chicago)
This image shows a longitudinal section of a root tip of Maize (Zea mays). To the left of the image, the large, loosely packed cells of the root cap can be seen. These cells protect the actively dividing meristematic tissue as the root grows down through the soil. This meristematic tissue is located just to the right of the root cap, where the cells are small and undifferentiated. If you follow the lines of cells towards the right, you can see that they increase in length in the zone of elongation. To the right of this zone, the cells become further differentiated, eventually assuming the mature structure related to their function.
This image is taken from a slide in the Botanical slide collection, Department of Plant Sciences, Cambridge. The specimen had been stained with Safranin O and Fast Green and was captured using a confocal microscope. These stains are often used together as general stains on plant material prepared for light microscopy and between them they stain many subcellular structures. The resulting colours are due to a combination of the stains and fluorescent colours in the cells.
The length of the section is approximately 300 µm.
Image by J. Haseloff
The image shows a longitudinal section of a root tip of Thale Cress (Arabidopsis thaliana) with endodermis and cortex highlighted by Green Fluorescent Protein (GFP) techniques.
GFP targeted to endoplasmic reticulum (ER) is expressed in the endodermis and cortex.
In the root, the cortex comprises the middle layers of tissues between the inner vascular core and the outer epidermis. The endodermis is the innermost cell layer of the cortex. When it is fully developed, the endodermis has a major function in the control of water and ion movements into the plant. In this image, the inner cylinder of cells shown by GFP will differentiate into the endodermis. The outer cylinder, also highlighted with GFP, will differentiate into the cells of the rest of the cortex, indicating the key role of the endodermis in the physiology of the plant.
You can relate this image to the ‘plan’ in the image of 'Longitudinal section of root tip of Thale Cress' and link it with the images of 'Dividing cells in root tip, highlighted by GFP', 'Vascular tissue in root tip, highlighted by GFP' and' Protophloem in root tip, highlighted by GFP', which form part of a series.
This image was obtained by staining with propidium iodide to show up cell walls and viewing under a confocal microscope. Green Fluorescent Protein (GFP) techniques were used to highlight certain cells in green.
The length of the section is approximately 150 µm.
Image by J. Hasseloff
Triticum root tip with root cap, prepared slide from Triarch observed using the 10x objective on an Olympus IX81 microscope
The image shows a longitudinal section of a root tip of Thale Cress (Arabidopsis thaliana).
GFP targeted to endoplasmic reticulum (ER) is expressed in the endodermis and cortex.
In the root, the cortex comprises the middle layers of tissues between the inner vascular core and the outer epidermis. The endodermis is the innermost cell layer of the cortex. When it is fully developed, the endodermis has a major function in the control of water and ion movements into the plant. In this image, the inner cylinder of cells shown by GFP will differentiate into the endodermis. The outer cylinder, also highlighted with GFP, will differentiate into the cells of the rest of the cortex, indicating the key role of the endodermis in the physiology of the plant.
You can relate this image to the ‘plan’ in the image of 'Longitudinal section of root tip of Thale Cress' and link it with images of 'Dividing cells in root tip, highlighted by GFP', 'Vascular tissue in root tip, highlighted by GFP' and 'Protophloem in root tip, highlighted by GFP', which form part of a series.
This image was obtained by staining with propidium iodide to show up cell walls and viewing under a confocal microscope. Green Fluorescent Protein (GFP) techniques were used to highlight certain cells in green.
The length of the section is approximately 150 µm.
Image by J. Hasseloff
The image shows a longitudinal section of a root tip of Thale Cress (Arabidopsis thaliana) with dividing cells highlighted by Green Fluorescent Protein (GFP) techniques. The central two GFP expressing cells show the quiescent centre of the root apical meristem. The outer two GFP expressing cells show the cells that will develop into the cortex and endodermis.
You can relate this image to the ‘image’ of 'Longitudinal section of root tip of Thale Cress' (which can serve as a ‘plan’) and link it with the images of 'Endodermis and cortex in root tip, highlighted by GFP', 'Vascular tissue in root tip, highlighted by GFP' and 'Protophloem in root tip, highlighted by GFP', which form part of a series.
This image was obtained by staining with propidium iodide to show up cell walls and viewing under a confocal microscope. Green Fluorescent Protein (GFP) techniques were used to highlight certain cells in green.
The length of the section is approximately 200 µm.
Image by A. Baker
The image shows a longitudinal section of a root tip of Thale Cress (Arabidopsis thaliana).
GFP targeted to endoplasmic reticulum (ER) is expressed in the developing protophloem. The protophloem differentiates from the meristematic cells of the root tip to form groups of cells just outside the central core of xylem.
You can relate this image to the ‘plan’ in the image of 'Longitudinal section of root tip of Thale Cress' and link it with the images of 'Dividing cells in root tip, highlighted by GFP', 'Endodermis and cortex in root tip, highlighted by GFP' and 'Vascular tissue in root tip, highlighted by GFP', which form part of a series.
This image was obtained by staining with propidium iodide to show up cell walls and viewing under a confocal microscope. Green Fluorescent Protein (GFP) techniques were used to highlight certain cells in green.
Longitudinal section of root tip of Thale Cress (Arabidopsis thaliana) stained to show cell walls (red) and cells of the protophloem (fluorescing green). The length of the section is approximately 200 µm.
Image by J. Hasseloff
DIC image of a Triticum root tip, prepared slide from Triarch observed using the 20x objective on an Olympus IX81 microscope.
The korean name is "Hoenggang"
This variety gets nicely curved leafs, a crescent moon tsuke and red roottips.
The leafes get a yellowish green colour.