Allium Cepa
Allium Cepa - Related Videos
08:51
Utilizing the Ethylene-releasing Compound, 2-Chloroethylphosphonic Acid, as a Tool to Study Ethylene Response in Bacteria
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Cited by 1 •
2016
The protocols outlined herein facilitate the convenient investigation of bacterial ethylene responses by utilizing 2-chloroethylphosphonic acid (CEPA). Ethylene is produced in situ through the decomposition of CEPA in an aqueous bacterial growth medium, circumventing the requirement for pure ethylene gas.
04:20
Investigating the Bacterial Response to Ethylene Using an Ethylene-Releasing Compound
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2025
Source: Augimeri, R. V. et. al., Utilizing the Ethylene-releasing Compound, 2-Chloroethylphosphonic Acid, as a Tool to Study Ethylene Response in Bacteria. J. Vis. Exp. (2016)This video demonstrates the effect of ethylene generated by 2-chloroethylphosphonic acid (CEPA) on bacterial growth and cellulose production. Ethylene activates signaling pathways that stimulate cellulose synthesis, resulting in enhanced pellicle formation. These results highlight the bacterial response to ethylene.
08:19
Direct Analysis of Single Cells by Mass Spectrometry at Atmospheric Pressure
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Cited by 17 •
2010
Single cell analysis is performed by mass spectrometry on plant and animal cells at atmospheric pressure by using a sharpened optical fiber to sample the cells for laser ablation electrospray ionization (LAESI) mass spectrometry.
08:13
RNA In situ Hybridization in Whole Mount Embryos and Cell Histology Adapted for Marine Elasmobranchs
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Cited by 1 •
2013
By combining methods for RNA whole mount in situ hybridization and histology, gene expression can be linked with cell fate decisions in the developing embryo. These methods have been adapted to marine elasmobranchs and facilitate the use of these animals as model organisms for biomedical, toxicology and comparative studies.
13:50
Focal Cerebral Ischemia Model by Endovascular Suture Occlusion of the Middle Cerebral Artery in the Rat
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Cited by 107 •
2011
Surgical induction of ischemic brain damage in the rat is a widely used model for stroke research. Here we demonstrate the induction of focal cerebral ischemia by occlusion of the middle cerebral artery. Visualization of the resulting infarct by histological staining and magnetic resonance imaging is also shown.
FAQs
The root tip is useful because it contains an active meristem, a region where cells divide through the cell cycle and mitosis. Its location concentrates stages of plant cell growth in tissue that can be examined with light microscopy and staining. This makes it possible to connect cellular division with root development and overall plant growth.
During mitosis, chromosome behavior can be examined as part of the root-tip cell cycle. Allium cepa provides accessible tissue in which these cellular events can be observed, allowing learners to relate chromosome behavior to cell division rather than viewing chromosomes as isolated structures. These observations support studies of how plant cells contribute to growth.
The bulb’s modified leaves have a storage role rather than serving only as ordinary foliage. They accumulate carbohydrates, linking visible bulb structure with the plant’s resource storage and development. In biology investigations, this organization provides a contrasting tissue context to the actively dividing root tip, helping compare storage tissue with a meristem.
Large cells and accessible tissues improve the practicality of microscopy-based observation. In Allium cepa, these traits allow investigators to examine cellular processes with light microscopy and staining, while the choice of tissue determines what is visible. Root tips support cell-cycle and mitosis work, whereas bulb tissues provide a storage-tissue perspective for comparison.
Light microscopy and staining provide complementary ways to investigate Allium cepa tissues. The source identifies these techniques as suitable for examining cell structure, anatomy, osmosis, and chromosome behavior. Used with the root tip or bulb, they help relate what is visible at the tissue and cellular levels to processes involved in plant growth and development.
The bulb and its accessible tissues can be used in laboratory investigations of osmosis, alongside studies of anatomy and cell structure. Because the plant offers tissues that are straightforward to observe, students and researchers can connect experimentally examined osmotic processes with tissue organization under microscopy. The model therefore supports both structural observations and investigations of cellular processes.
Allium cepa helps connect visible tissue organization with fundamental mechanisms of plant growth and development. Its bulb illustrates carbohydrate storage, while its root tip provides tissue for examining cell-cycle activity, mitosis, and chromosome behavior. This combination allows biological investigations to move from accessible anatomical features to cellular processes relevant to plant development.