| 单词 | plant tissue |
| 例句 | We must not only be concerned with what is happening to the soil; we must wonder to what extent insecticides are absorbed from contaminated soils and introduced into plant tissues. Silent Spring 1962-09-27T00:00:00Z They engulf algae, which then establish themselves as complex plant tissues, essential for the life of the whole company. The Lives of a Cell 1974-01-01T00:00:00Z His specialty is the grafted cactus, the art and science of connecting two pieces of living plant tissue together to grow as one composite plant. | The Artistry of Plants and Pots 2014-05-01T18:00:25Z As a biochemist, I use plant tissue culture techniques in my courses and research program. Lab-grown meat techniques aren’t new — cell cultures are common tools in science 2023-06-28T04:00:00Z Most sap-sucking insects drill into a nutrient-dense plant tissue called phloem, but spittlebugs specialize in the much more dilute sap from another tissue, xylem. Meet the world’s least picky insect—a spreader of deadly crop disease 2023-10-06T04:00:00Z But to demonstrate the true power of the approach, their new work concentrated on developing a strain that could feed on molecules derived from lignin -- a type of tough, fibrous plant tissue. Fast-track strain engineering for speedy biomanufacturing 2023-09-19T04:00:00Z Leftover sugars can then be used for building plant tissue. Crops grown without sunlight could help feed astronauts bound for Mars 2023-06-07T04:00:00Z All three types of plant cells are found in most plant tissues. Fundamentals of Biology 2015-01-01T00:00:00Z In addition to destroying plant tissue directly, some plant pathogens spoil crops by producing potent toxins. Concepts of Biology 2013-04-25T00:00:00Z Rosemartin said it’s possible that such destructive storms could bring more damage to budding plant tissues or branches that would otherwise still be dormant. Punxsutawney Phil is wrong: Spring is arriving early in some places 2023-02-01T05:00:00Z Leaf miners and gall insects are both parasitic, living inside plant tissue. Those weird marks on your leaves? Here’s how to decipher them 2022-11-02T04:00:00Z That's because most plant tissues are quickly recycled by decay or by sea creatures grazing on them. Using the oceans to fight climate change 2022-11-02T04:00:00Z Therefore, pollutants dissolved in rainwater penetrate plant tissues readily and have a larger impact on mosses than on other plants. Fundamentals of Biology 2015-01-01T00:00:00Z The seed that is formed contains three generations of tissues: the seed coat that originates from the parent plant tissue, the female gametophyte that will provide nutrients, and the embryo itself. Concepts of Biology 2013-04-25T00:00:00Z Which plant tissue would show the presence of labeled minerals and which would show the presence of radioactive sucrose? Biology for AP Courses 2022-06-09T00:00:00Z The new bank has facilities that will make it easier for technicians to process and store plant tissues free of diseases, van Hintum says, making cassava conservation more reliable. World’s largest bean and cassava collection gets a striking new home 2022-03-20T04:00:00Z Feeding observations reveal that hamadryas baboons eat more leafy plant tissues than olive baboons do, which means their diet is higher in fiber. Mysteries of Ancient Egypt’s Sacred Baboons Revealed 2021-11-17T05:00:00Z To start plant tissue culture, a part of the plant such as a stem, leaf, embryo, anther, or seed can be used. Fundamentals of Biology 2015-01-01T00:00:00Z So instead of focusing on the stem, they concentrated on the meristem, a region of plant tissue at the tip of each stem where actively dividing cells produce new growth. Cauliflower and Chaos, Fractals in Every Floret 2021-07-08T04:00:00Z A researcher intends to test the effects of several growth factors on the differentiation of plant tissue. Biology for AP Courses 2022-06-09T00:00:00Z Moreover, they pose little threat to plants because they do not eat plant tissues. Brood X Cicadas Are Emerging at Last 2021-05-10T04:00:00Z Just a few years earlier, scientists had created the first genetically modified plant tissue — adding a gene to tobacco that conferred antibiotic resistance, for purposes of technological demonstration rather than any commercial use. Can Genetic Engineering Bring Back the American Chestnut? 2020-04-30T04:00:00Z Under sterile conditions, the plant material is placed on a plant tissue culture medium that contains all the minerals, vitamins, and hormones required by the plant. Fundamentals of Biology 2015-01-01T00:00:00Z Dr. Doty noticed that when she was engineering her poplars, other bacteria in the plant tissue seemed to be contaminating the results. Superfund, Meet Super Plants 2020-04-07T04:00:00Z Goldman spent a decade on colors, reducing reddishness and increasing yellowishness, until the pigments alternated inside the beet, within the plant tissue itself, like a miniature archery target. You Don’t Have to Turn on Your Oven for This Delicious Beet Dip 2019-06-05T04:00:00Z From that stem grows a clump of ivy plant tissue, now infected by the microbes. Take a common houseplant, add a little rabbit DNA and voilà! You get a super air purifier 2019-03-18T04:00:00Z Because seeds or clippings cannot be genetically modified in a consistent and predictable way, scientists need to culture plant tissue and coax it into producing roots and shoots after the genes have been manipulated. What legal weed in Canada means for science 2018-10-16T04:00:00Z The proteins, lipids, and nucleic acids are broken down by specific enzymes into smaller molecules and salvaged by the plant to support the growth of other plant tissues. Fundamentals of Biology 2015-01-01T00:00:00Z But many of these critical storehouses, which hold seeds and other plant tissues, are in poor condition as a result of funding shortages. One of the world’s most important crop gene storehouses just got a funding boost 2018-10-11T04:00:00Z Could it be used to track spatio-temporal changes in gene-expression profiles in multicellular systems and shed light on the development of animal and plant tissues and organs? CRISPR tool puts RNA on the record 2018-10-02T04:00:00Z Galls are like in-law apartments for parasites: swollen masses of plant tissue that route nutrients to wasp larvae, which grow and develop safely within until they are mature enough to leave. Parasitic Vines That Feed on Parasitic Wasps That Feed on Trees 2018-08-30T04:00:00Z Foraging worker bees ingest insecticide-laced nectar and pollen from both treated crops and contaminated wild flowers17,18, and are exposed through contact with sprayed plant tissue when foraging on crops. An alternative to controversial pesticides still harms bumblebees 2018-08-14T04:00:00Z Meristem is a type of plant tissue consisting of undifferentiated cells that can continue to divide and differentiate. Fundamentals of Biology 2015-01-01T00:00:00Z Nitrogen levels in the plant tissues didn’t drop across the board - it appears to vary from species to species - and the available metabolizable energy of the Mesozoic-mimicked plants was not inherently low. Stocking the Mesozoic Salad Bar 2018-08-05T04:00:00Z “Extant herbivorous vertebrates are not genetically provided with the enzymes needed to break down and metabolize cellulose and other fibrous plant tissues,” paleontologists Marco Romano and James Farlow point out in a new paper. A Tiny Reason for Big Dinosaurs to Gather Together 2018-05-27T04:00:00Z EWG is well-known for confusing this question by refusing to look at the level of the pesticide present in each type of plant tissue,... Do Pesticides Get Into the Flesh of Fruits and Vegetables? 2017-11-10T05:00:00Z Neonicotinoids are water-soluble — which is how they move from seeds into growing plant tissues. The bitter battle over the world’s most popular insecticides 2017-11-07T05:00:00Z Include control Petri plates inoculated with mycelia without plant tissue to verify that the medium and incubation conditions do not interfere with fungal growth. Fundamentals of Biology 2015-01-01T00:00:00Z The question arises to what extent insecticides are absorbed into plant tissues from contaminated soils. Silent Spring—I 2017-01-03T05:00:00Z The Central Valley’s farmlands essentially operate as a vast lung, breathing in carbon dioxide through photosynthesis and converting it into plant tissues. California Today: To Fight Climate Change, Heal the Ground 2017-05-31T04:00:00Z Around the world, about 1,750 gene banks, as well as botanical gardens, hold more than 7.4 million seeds or plant tissues from thousands of crop species. Agrobiodiversity: The living library : Nature : Nature Research 2017-04-25T04:00:00Z The compounds work their way into plant tissue rather than just coating the leaves and stems, requiring fewer sprays. First evidence found of popular farm pesticides in drinking water 2017-04-05T04:00:00Z Three major types of plant tissues are dermal, ground, and vascular tissues. Fundamentals of Biology 2015-01-01T00:00:00Z Bees are exposed to dust from the seeds when they are planted, and to the nicotine-imitating toxins that spread to plant tissue as the crops grow, the groups contended. Court's rejection of a lawsuit over pesticides in seed coatings is a setback to beekeepers 2016-11-22T05:00:00Z The carbon stored in dead plant tissues would then escape into the atmosphere through oxidation. How earthquakes help capture carbon dioxide 2016-05-30T04:00:00Z In addition, small RNAs from the three sequenced libraries were mapped on these regions, allowing no mismatches, in order to pre-select putative miRNA loci that showed evidence of expression in the three plant tissues analysed. The genome of the seagrass Zostera marina reveals angiosperm adaptation to the sea : Nature : Nature Publishing Group 2016-01-26T05:00:00Z Students will conduct experiments, research and complete projects in agronomy, which is the science of producing and using plants for food, fuel, fiber and conservation through soil testing and plant tissue analysis. Southern Indiana facility brings farm education to students 2016-01-31T05:00:00Z The NH3 resulting from fixation can be transported into plant tissue and incorporated into amino acids, which are then made into plant proteins. Fundamentals of Biology 2015-01-01T00:00:00Z JA is produced immediately after something damages the plant tissue, and its accumulation usually leads to the creation of the compounds the insects find so distasteful. How caterpillars use their feces to fool corn 2015-09-11T04:00:00Z The bacteria readily infect tobacco and insert their genes into the plant tissue. Genetic engineering turns a common plant into a cancer fighter 2015-09-10T04:00:00Z They feed on dead plant tissues, dead animals, and the excrement of other animals. Eight things insects – those unsung heroes – do for us | David Urry 2015-08-04T04:00:00Z Private enterprises are also trying to start their own networks for plant tissue. Smithsonian sets up frozen-plant repository 2015-07-07T04:00:00Z The key to plant growth is meristem, a type of plant tissue consisting of undifferentiated cells that can continue to divide and differentiate. Fundamentals of Biology 2015-01-01T00:00:00Z Carbon dioxide is taken up during photosynthesis, and some of this carbon becomes locked up as living plant tissue—which is a reduced compound, thus rich in energy that can be liberated. Life Ain't Easy: What Would Make an Exoplanet "Earth-Like"? [Excerpt] 2015-04-30T04:00:00Z Seeds are grown in greenhouses, and plant tissue is cultivated in research labs. China’s Long Food Chain Plugs In 2015-03-01T05:00:00Z It also will soon release another product, which monitors the electric signals within plant tissue to monitor levels of pollutants like ozone. The Coolest, Weirdest Things We Saw at CES 2015 The researchers focused on the secondary cell walls in a type of plant tissue called xylem from the Arabidopsis plant's roots. How to Manipulate Plants to Build a Better Biofuel 2015-01-09T05:00:00Z These galls—hollow knobby growths of plant tissue that swell in response to thrips—protect insects from the outside weather. Australian insects build houses to keep from drying out 2014-10-03T04:00:00Z The most common food fermentations develop spontaneously, because the microbes responsible are ubiquitous and thrive on sugars in nutrient-rich materials such as plant tissues and animal secretions. Chemistry: A festive ferment 2013-12-18T18:50:33.583Z The blisters contain millions of spores, which infect the plant tissues, and disrupt the crop's ability to produce grain. Advance in battle against wheat pest 2013-06-27T22:37:20Z "It's just a really common fungus in the environment that mostly lives on dead and dying plant tissue," Leonard says. Fungal Meningitis Pathogen Discovers New Appetite for Human Brains 2012-11-12T11:45:00.180Z Shaving the scion in this way exposes its vascular cambium—a ring of plant tissue full of dividing cells that increase the branch’s girth. The Science of Pomato Plants and Fruit Salad Trees 2012-09-10T17:45:00.360Z "We are finding ways to mass produce quality vanilla plantlets through plant tissue culture." Vanilla: The 'Chanel No 5' of flavours 2012-08-27T12:18:47Z Later this year, the plant tissue laboratory will be complete, enabling Jones to propagate, grow and plant seeds all in one location. Growing Rwanda Out of Poverty 2012-07-25T10:03:10Z They feed entirely by suction, and the majority of the species pierce plant tissues and suck sap. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 3 "Helmont, Jean" to "Hernosand" 2012-04-14T02:00:23.707Z At the end of the seventeenth century Malpighi and Grew discovered that plant tissue is entirely made up of microscopic spaces enclosing fluid; they called these spaces cells. Essays In Pastoral Medicine 2012-03-05T03:00:09.993Z This is seen in the walled cell of plant tissue and in the naked cell-body of Amoeba. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8 "Cube" to "Daguerre, Louis" 2012-01-31T03:00:17.257Z All plant species harbor microbial “partners,’’ that is, microbes such as bacteria or fungi that “infect’’ the plant and live within plant tissues. Studying Toxic Microbes in Grasses 2010-07-19T18:19:00Z That means all the plant tissue is genetically identical. 2010-01-05T05:56:00Z The energy radiated by the sun is accumulated and stored in the plant tissues. The Mechanism of Life That, I believe, is what actually happens in some plant tissues. The Social Gangster The whole photosynthetic process takes place in chlorophyll-containing plant tissues with astonishing rapidity, sugars, and even starch, appearing in the tissues almost immediately after their exposure to light in the presence of carbon dioxide. The Chemistry of Plant Life The roots penetrate wherever there is any loose soil, and partly by their pressure and partly through the acidity accompanying decomposing plant tissue, complete a further breaking down of the rock. A Living from the Land Unless specially prepared, the soft plant tissue between the harder leaf fibers becomes dry and dirty and breaks in time; hence the ordinary pandan bag or mat can not be considered a durable article. Philippine Mats Philippine Craftsman Reprint Series No. 1 But the plant must have the carbon dioxide and can get it only from the air, so it is constantly withdrawing this harmful substance from the air and converting it into plant tissue. The Renewal of Life; How and When to Tell the Story to the Young Transmission of Inorganic Nutrients from Soils to Plants to Animals Soil analysis and plant tissue tests both have their value, but also their limitations. Northern Nut Growers Association Report of the Proceedings at the Thirty-Seventh Annual Report Wooster, Ohio, September 3, 4, 5, 1946 In most cases, the glucoside is easily hydrolyzed by an enzyme which occurs in the same plant tissue, but in different cells than those which contain the glucoside. The Chemistry of Plant Life Herbivorous: feeding upon plant tissue: a leaf feeder. Explanation of Terms Used in Entomology The microscopic examinations showed the absence of fungi or bacteria in the vascular system or other plant tissues. Northern Nut Growers Association Thirty-Fourth Annual Report 1943 Similar spontaneous movements were also observable in plant tissues, and by their investigation the secret of automatism in the animal world became unravelled. Sir Jagadis Chunder Bose His Life and Speeches Grafting Wax The necessity to protect graft unions by excluding air and moisture from cut plant tissue led to the use of balls of mud in ancient times. Northern Nut Growers Association Report of the Proceedings at the Thirty-Seventh Annual Report Wooster, Ohio, September 3, 4, 5, 1946 They are generally extracted from plant tissues by digestion with water or alcohol. The Chemistry of Plant Life Plant life also is dependent upon the bacterial changes which take place in the soil and in the plant tissues. Human Foods and Their Nutritive Value Except for loss of color it preserves nearly all plant tissues perfectly. Elements of Structural and Systematic Botany For High Schools and Elementary College Courses We find, however, that similar spontaneous movements are also observable in plant tissues, and by their investigation the secret of automatism in the animal may perhaps be unravelled. Sir Jagadis Chunder Bose His Life and Speeches Figs. 10-14, for instance, show the microscopic appearance of several plant tissues. The Story of the Living Machine A Review of the Conclusions of Modern Biology in Regard to the Mechanism Which Controls the Phenomena of Living Activity Injury to the plant tissue seems to be a necessary preliminary to the functioning of the active components of the glucoside, except in the case of the seeds. The Chemistry of Plant Life General Composition.—Animal tissue is composed of the same classes of compounds as plant tissue. Human Foods and Their Nutritive Value Of this substance, which is akin to starch, the walls or envelopes of the cells of plant tissues are composed. Scientific American Supplement, No. 787, January 31, 1891 These compartments are called "cells," and the structure of all plant tissues is described as "cellular." Psychology and Achievement Being the First of a Series of Twelve Volumes on the Applications of Psychology to the Problems of Personal and Business Efficiency In the early part of the century observations upon various kinds of animals and plant tissues multiplied, and many microscopists independently announced the discovery of similar small corpuscular bodies. The Story of the Living Machine A Review of the Conclusions of Modern Biology in Regard to the Mechanism Which Controls the Phenomena of Living Activity This leads naturally to the supposition that at least some of these glucosides are protective or curative agents in the plant tissues. The Chemistry of Plant Life Albuminoids make up the connective tissue, hair, and skin, and are more abundant in animal than in plant tissue. Human Foods and Their Nutritive Value Finally, they settle down, thrusting their sucking beak into the plant tissue, and cast their skin. Composition-Rhetoric Handbook of microscopical technique for workers in animal and plant tissues. U.S. Copyright Renewals, 1964 July - December Although chlorine is almost constantly present in plant tissues, it is not indispensable for most plants, and for those assimilating it in small amounts, our rainfall would seem to offer an ample supply. Scientific American Supplement, No. 514, November 7, 1885 Examples of all of these different types of derivatives of organic acids are frequently found in plant tissues. The Chemistry of Plant Life The ether extract of plant tissue contains in addition to fat appreciable amounts of cellulose, gums, coloring, and other materials. Human Foods and Their Nutritive Value With modern orchard heaters properly installed and handled, there is no difficulty in raising the temperature of even comparatively large tracts five degrees and maintaining a temperature above freezing, thus preventing refrigeration of plant tissue. Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86 Most animal-tissue decomposes with great rapidity, and plant tissue, when not protected, soon decays. Scientific American Supplement, No. 362, December 9, 1882 The almost universal presence of oxidases in plant tissues has been repeatedly demonstrated. The Chemistry of Plant Life Substances which correspond in composition to both these types are found in plant tissues and the same class names are applied in a general way to lipoids of either plant or animal origin. The Chemistry of Plant Life Water unites chemically with various elements to form plant tissue and supplies hydrogen and oxygen for the production of organic compounds within the leaves of plants. Human Foods and Their Nutritive Value The best known example of a coenzyme in plant tissues is in connection with the activity of the zymase of yeast cells. The Chemistry of Plant Life But this sliding scale of solid compounds, which we designate by the names given above, is not the only product of the natural and spontaneous distillation of plant tissue. Scientific American Supplement, No. 362, December 9, 1882 Similarly, proenzymes have been reported as occurring in numerous plant tissues. The Chemistry of Plant Life So far as is known, however, they do not occur as permanent forms in any plant tissues. The Chemistry of Plant Life The cells of an elastic gel resemble closely the cells of a plant tissue in many of their physical properties. The Chemistry of Plant Life Similarly, formaldehyde and many other organic compounds may affect the colloidal properties of the protoplasmic gel in such a way as to injure the plant tissues. The Chemistry of Plant Life There is, as yet, no satisfactory explanation of this difference in behavior between plant tissues toward various organic toxic substances. The Chemistry of Plant Life We will, instead, discuss the organic chemical components of plant tissues and the reactions which they undergo, using the more common type of autotrophic plants as the illustrative material in most cases. The Chemistry of Plant Life Since proteins are indiffusible, it is essential that the cell-walls of the tissue shall be thoroughly ruptured as the first step in any process for the extraction of these compounds from plant tissues. The Chemistry of Plant Life No phenomenon similar to this occurs in plants, however, and glucuronic acid has never been found in plant tissues. The Chemistry of Plant Life Four different galactans have been isolated from plant tissues; they are all white, amorphous solids which dissolve with difficulty in water, forming gummy solutions. The Chemistry of Plant Life Several hundred different glucosides have been isolated from plant tissues, and their properties described, and this number is being added to constantly, as the methods of isolation and study are improved. The Chemistry of Plant Life Moreover, there is abundant evidence to show that, in both animal and plant tissues, energy changes are brought about chiefly by the transformation of fats into carbohydrates and vice versa. The Chemistry of Plant Life A discussion of these animal enzymes would be out of place in such a text as this, however, and the following list includes only enzymes which are known to occur in plant tissues. The Chemistry of Plant Life But there is as yet no evidence to show that fats and oils have any similar function in plant tissues. The Chemistry of Plant Life Bodies similar to the animal cerebrosides seem to occur in many plant tissues, since plant lipoids which yield no phosphorus when hydrolyzed have often been isolated. The Chemistry of Plant Life |
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