Plant stem - Medicow
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Topic: Plant stem


  
 ScienceDaily: Enzyme Is Crucial For Production Of Plant Growth Hormone
One measure of the light-responsive pathway in plants is the length of the primary stem, or hypocotyl, under various light conditions," Chory explained.
Arabidopsis, a small flowering plant that is a relative of the mustard plant, is the basic model organism used in plant biology research.
Plant biologists have debated whether auxin biosynthesis proceeded via a pathway that is dependent on the amino acid tryptophan.
http://www.sciencedaily.com/releases/2001/01/010111194213.htm   (1331 words)

  
 Ageing
In many plant systems the onset of low soil water potential conditions in which very little water is available to the plant leads to an accelerated ageing and senescence of leaf material.
The senescence pattern predicted by the model is not uniform with respect to time, as it is a complex function of formation rates determined by photosynthesis and partitioning, the average age to senescence of plant structures and the thermal conditions for the model.
Water stress induced senescence is usually associated with changes in abscisic acid concentration and may result in remobilization of proteins and other structural components away from the leaves and into the formation of root, stem or reproductive structures {Addicott, 1968 #2045}.
http://www.face.bnl.gov/Modelling/ageing.htm   (1331 words)

  
 Plant Hormones/Nutrition
We now know, from the 1926 experiments of Frits Went, that auxin, a plant hormone produced in the stem tip (auxins promote cell elongation), moves to the darker side of the plant, causing the cells there to grow larger than corresponding cells on the lighter side of the plant.
Other parts of the plant also need energy but are not photosynthetic, such as the roots.
Plant Biology (University of Maryland) Text, outlines, and images that are part of a general botany course.
http://www.estrellamountain.edu/faculty/farabee/biobk/BioBookPLANTHORM.html   (2475 words)

  
 Plant Growth Hormones
The decapitated plants were treated by removing the apical bud and any attached immature leaves and a terminal stub of the stem should still be evident.
The decapitated + IBA plants were treated similarly, but a dollop of lanolin containing 5000 ppm auxin (IBA) was applied to the stub.
GA is a natural plant hormone and is routinely used to simulate grass growth in the "roughs" of golf courses and to cause seedless table grapes to grow to a full size.
http://www.biologie.uni-hamburg.de/b-online/ibc99/koning/hormonelab.html   (1326 words)

  
 Growth Hormones - Plant Growth Hormone ☼
What are Gibberellins&; plant hormones that stimulate growth in the stem and leaves, trigger the germination of the seed and breaking of bud dormancy.
Growth hormone is a revolutionizing the way men and women are using discount supplements to get in the best shape of their lives! Our Recombinant HGH (Human Growth Hormone) orally absorbed chewable tablets contain the strongest concentration of recombinant Human Growth Hormone available without a prescription. plant growth hormone
What is abscisic acid; defined as a plant hormone that allows the plant to adjust to the outside stress it may encounter.
http://www.growth-hormones.info/plantgrowthhormone   (2546 words)

  
 Plant Hormones/Nutrition
We now know, from the 1926 experiments of Frits Went, that auxin, a plant hormone produced in the stem tip (auxins promote cell elongation), moves to the darker side of the plant, causing the cells there to grow larger than corresponding cells on the lighter side of the plant.
Other parts of the plant also need energy but are not photosynthetic, such as the roots.
is the plant response to the relative amounts of light and dark in a 24 hour period, and controls the flowering of many plants.
http://www.estrellamountain.edu/faculty/farabee/biobk/BioBookPLANTHORM.html   (2475 words)

  
 Plant Glossary - EnchantedLearning.com
The axil of a plant is the angle between the upper side of the stem and a leaf, branch, or petiole.
Abscisic acid is a plant hormone that inhibits growth, causes the abscission of leaves, induces dormancy, closes stomata, and triggers other phenomena in response to adverse conditions.
Amyloplasts are found in starchy plants like tubers and fruitsr.
http://www.enchantedlearning.com/subjects/plants/glossary/index.shtml   (1417 words)

  
 Plant Hormone Lab
Plants that ‘bolt’ in fall (sudden stem lengthening) are being affected by gibberellins as are flowering, fertilization, seed production, and growth of fruits, new leaves and branches.
Gibberellins are made in a wide variety of plant organs (leaves, roots, and embryos), move through the plants vascular system, and are involved in regulating plant height.
Plant scientists also believe that ethylene may have an important role in plant self-protection and healing.
http://www.mvhs.net/~pcaroth/plant_hormone_lab.htm   (1417 words)

  
 CORD: Plant Hormone
Then they extract the stem proteins from each of these plants and compare and contrast them by polyacrylamide gel electrophoresis.
The purpose of this science club project is to determine what plant proteins are "turned on " as a result of treatment with gibberellic acid, a plant growth hormone.
Finally, they perform a computer BLAST search to compare the sequences of the isolated proteins and try to figure out why these proteins might be elevated during gibberellic acid stimulated plant growth.
http://main.uab.edu/cord/show.asp?durki=54742   (125 words)

  
 Gibberellin - Wikipedia, the free encyclopedia
Gibberellins are a plant growth substance (phytohormone) involved in promotion of stem elongation, mobilisation of food reserves in seeds and other processes.
Its absence results in the dwarfism of some plant varieties.
Chemically all known gibberellins are gibberellic acids, a family of diterpene acids that are synthesized by the terpenoid pathway in plastids and then modified in the endoplasmic reticulum and cytosol until they reach their biologically active form.
http://en.wikipedia.org/wiki/Gibberellins   (125 words)

  
 Gravitropism Terms and Definitions at www.MedicalGlossary.org
In plants, the main root is positively gravitropic (growing downwards) and a main stem is negatively gravitropic (growing upwards), irrespective of the positions in which they are placed.
Home > Biological Sciences > Biological Phenomena, Cell Phenomena, and Immunity > Plant Physiology > Tropism > Gravitropism Terms and Definitions
Plant gravitropism is thought to be controlled by auxin (AUXINS), a plant growth substance.
http://www.medicalglossary.org/tropism_gravitropism_definitions.html   (125 words)

  
 BLT Research -- Plant Abnormalities
A darkening of the stem node, particularly when expulsion cavities are present, is usually the result of the growth of an opportunistic fungus (Ustilago tritici) which quickly forms on the exudate released from inside the plant stem.
Marked bending of the plant stem nodes which occurs at the apical (1st node beneath the seed-head), penultimate (2nd node beneath the seed-head) or even the 3rd and/or 4th nodes down the plant stem.
It is microwave radiation, here, that is heating up the moisture inside the plant stem which--as it turns to steam and expands--either stretches the more elastic fibers at the top of the plant, or blows holes in the tougher nodes farther down the plant stem.
http://www.bltresearch.com/plantab.html   (1994 words)

  
 Weigel World - Stem cell regulation and floral patterning in Arabidopsis
Plant stem cells reside at the growing points of a plant, namely the root tip and the shoot apex and are embedded into specialised structures called meristems, which provide a local environment that regulates the homeostasis between proliferation and differentiation.
Many plant cells, in contrast, continue to be totipotent throughout the plant’s life, and plant stem cells are much more easily obtained and analyzed than those of animals.
After the transition from vegetative to reproductive development of the plant, floral meristems arise from the main shoot apical meristem and then develop into flowers.
http://www.weigelworld.org/research/projects/floralpatterning   (724 words)

  
 Weeds
Corn spurry: The plant has a round stem and leaves appear to be in whorls (circles) around the plant stem.
Bedstraw: The plant has a square stem, tiny, white, four-part flowers, and leaves are in whorls (circles) around the plant stem.
Grasses: The stems are cylindrical and hollow, leaves are slender with parallel veins.
http://gardening.wsu.edu/library/weed002/weed002.htm   (399 words)

  
 stem leaf : Definition from the Online Dictionary at Datasegment.com
Stem leaf (Bot.), a leaf growing from the stem of a plant, as contrasted with a basal or radical leaf.
Anything resembling a stem or stalk; as, the stem of a tobacco pipe; the stem of a watch case, or that part to which the ring, by which it is suspended, is attached.
A little branch which connects a fruit, flower, or leaf with a main branch; a peduncle, pedicel, or petiole; as, the stem of an apple or a cherry.
http://onlinedictionary.datasegment.com/word/Stem+leaf   (399 words)

  
 Plant care
Cut the the stem of the stock plant and secure the plant to be saved on the base of the stock.
If you want to graft the plant, choose a stock plant (An easy to grow plant that is closely related (Cactus to Cactus) to the plant you want to save) that has a stem almost the same size.
If you must have the plant, or it would be a rare acquisition, cut the base of the plant off with a sterile knife until all signs of infection are removed.
http://ourworld.compuserve.com/homepages/davidtraish/NSCare.html   (2405 words)

  
 british buy columbia flower online and rose bouquet Cut Orchids
british buy columbia flower online, plant flower encyclopedia, plant flower nursery, plant flower picture, plant flower tree, plant with purple flower, plant with white flower, plant with yellow flower, planting a flower garden, planting a rose garden, planting flower bulb – Be sure foam materials are completely saturated and the container is full daily.
“british buy columbia flower online, plant flower encyclopedia, plant flower nursery, plant flower picture, plant flower tree, plant with purple flower, plant with white flower, plant with yellow flower, planting a flower garden, planting a rose garden, planting flower bulb” – Remove any leaves that may be under water.
While holding the stems under water in a sink or under running water, cut about one inch off each stem with a sharp knife or shears.
http://www.cutorchids.com/british-buy-columbia-flower-online.html   (270 words)

  
 Runners of Westwood
A stolon is a stem with long internodes between the nodes, and the stem diameter tends to be much thinner than an otherwise "normal" stem on the plant.
Therefore, a stolon would be defined narrowly as a photosynthetic unit with green tissues, whereas a runner would be not be able to sustain itself, being a mere connector between the mother plant and its offspring.
The stolon connects the mother plant with each ramet and thereby provides the pathway for a flow of nutrients and water to the new plantlet, or even some nutrients from the plantlet back to the mother plant.
http://www.botgard.ucla.edu/html/MEMBGNewsletter/Volume5number1/Runnersofwestwood.html   (270 words)

  
 Plant Pipes - Environmental Protection Agency
Materials: Slightly wilted house plant; clear plastic cups; red or blue food coloring; selection of plant stems in water such as woody twigs with and without leaves, herbaceous stems with and without leaves, celery with and without leaves, white carnations, white daisies, or stem of succulent plant or cactus.
To conclude, have the students cut thin cross sections of the various stems and observe the plant pipe patterns with a hand lens or microscope.
Ask them to hold the plant stem up to a bright light to see whether they can determine and measure the height of the colored water.
http://www.epa.gov/superfund/students/clas_act/summer/pipes.htm   (838 words)

  
 Aquatic Plants Page 7 - Keys to the Aquatic Biota of the Hawaiian Islands
Plant submersed and more or less lax, having leaves arranged in whorls at nodes along length of the stem, with 3 to 8 sessile leaves at each node.
Plants submersed or mostly submersed, lax, leaves grass-like or strap-like, either arising from a buried rootstock or along a stem, but not whorled
Plant entirely or mostly submersed and consisting of sessile, strap-like leaves arising from a creeping rootstock {anchored (or buried) on the bottom.
http://www.aecos.com/CPIE/plant1.html   (901 words)

  
 Botany
The stem is the main trunk of a plant.
One of the major functions of the stem is to move water, nutrients and food through the plant.
Adventitious buds may form on the internode of the stem, at the edge of a leaf or at the cut on a stem or root.
http://www.hcs.ohio-state.edu/mg/manual/botany.htm   (1545 words)

  
 Shoot
In most plants, the stem serves as a support for the leaves which act as solar collectors to produce food for the plant.
In some plants (cacti are examples), the stem is the primary photosynthetc organ and the leaves are very reduced.
Because of the tight integration of leaf and stem, stem anatomy is a bit more complex than that of the root.
http://botit.botany.wisc.edu/courses/botany_130/Anatomy/Stem/Stem.html   (1391 words)

  
 What's Next In Science & Technology - Researchers Make a Breakthrough in Plant Stem Cell Research
Unlike the stem cells of animals, which can only produce specific kinds of tissue after the animal is past its embryonic stage, plant stem cells remain their totipotency and, therefore plants can continue growing over many years, developing new organs.
Biologists call this tissue the "apical meristem", and it contains totipotent stem cells that are active throughout the life of the plant.
All above ground parts of a plant - leaves, stem, flowers, and seeds - ultimately are derived from cells of a small tissue at the tip of the shoot.
http://www.whatsnextnetwork.com/technology/index.php/2005/12/22/p1329   (826 words)

  
 Mushrooms in potted plant Removing keiki (baby plant) from orchid
Once roots have formed, this new plant may be removed by carefully cutting between the new plant and the stem on which it formed, using a sharp knife.
The old stem on which the keiki was produced may be declining and may not last many more years but, if you are careful as you cut, you can minimize damage to the stem so it may live longer, perhaps producing other keikis or flowers.
If few roots have formed at the base of the keiki, you can help the root development process by wrapping some sphagnum moss around the stem at the base of the keiki and keeping the sphagnum moist.
http://www.cahe.nmsu.edu/CES/yard/2005/012205.html   (826 words)

  
 MSN Encarta - Dictionary - stock
botany trunk: the trunk of a tree, or the main stem of a plant
botany plant receiving graft: a plant or plant stem onto which a shoot or bud is grafted
botany plant used for cuttings: a plant or part of a plant from which cuttings are taken
http://ca.encarta.msn.com/dictionary_1861715166/stock.html   (826 words)

  
 Name Picture Plant
Plant -parts salad This portion of the Cool Science for Curious Kids website asks students to name a tomato, lettuce, asparagus, broccoli, and carrot as a fruit, stem, leaf, root, or flower.
the name that is universally used to identify a plant.
name :I. Help:To view a plant description, view a plant picture or order a plant click on the links to the right of each plant name...
http://www.plants-n-seeds.com/22/name-picture-plant.html   (826 words)

  
 ice plant
It is a low-growing spreading herbaceous plant with the fleshy stem and leaves...
Ice Plant This ice plant blossom emerging from the tangle of last year's growth exemplifies the theme of renewal.
Encyclopedia Entry for ice plant Dictionary Definition of ice plant Ice Plant The Ice Plant Carpobrotus edulis (L.) L. Bolus, is a member of the Stone Plant family Aizoaceae.
http://www.plantsall.com/iceplant   (1137 words)

  
 airlayer.html
The procedure was to wound the stem or branch of a plant and enclose the wounded stem with moist sphagnum moss or similar rooting medium until roots develop from the wounded area.
Using a sheet of polyethylene film approximately 6" X 12" or 8" X 12", depending upon the size of the plant stem, wrap the ball of sphagnum moss using the butchers fold (see insert) to secure a tight seal where the two ends of the sheet are joined.
Many plants are lost in the final stage of the process because the root system is not sufficiently developed to sustain the top portion of the new plant.
http://aggie-horticulture.tamu.edu/extension/ornamentals/airlayer/airlayer.html   (991 words)

  
 Plant stem - Encyclopedia.WorldSearch
Resistance to Phialophora gregata is expressed in the stems of resistant soybeans : An article from: Plant Disease
A stem is the above ground axis of a vascular plant.
These tissues are the early precursors of the mature stem tissues, and define the basic functions of the stem:
http://encyclopedia.worldsearch.com/plant_stem.htm   (991 words)

  
 Greenhouses.com
Honesty is a plant that has a great number of leaves on each stem, and the stem pushes the flower up above the plant to the colors of this flower are seen from various angles.
Honesty is a plant that will grow to be any where from one foot high to three foot high depending on your soil and the temperatures that the plant is experiencing.
Honesty is a plant that is called an annual, but over mild winters, the plant will come back to bloom again in the next growing season.
http://www.greenhouses.com/content/view/409/34   (991 words)

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