In biology Biology is a natural science concerned with the study of life and living organisms, including their structure, function, growth, origin, evolution, distribution, and taxonomy, stolons (from Latin Latin or sometimes Roman is an Italic language originally spoken in Latium and Ancient Rome. Although often considered a dead language, in view of the fact that it has no native speakers, a small number of scholars can fluently speak it and it continues to be taught in schools and universities and has been, and currently is, used in the process of stolō "branch") are horizontal connections between organisms. They may be part of the organism, or of its skeleton In biology, a skeleton is a rigid framework that provides structure as well as protection in humans and many types of animals, particularly those of the phylum Chordata and of the superphylum Ecdysozoa. Exoskeletons are external, as is typical of many invertebrates; they enclose the soft tissues and organs of the body. Exoskeletons may undergo; typically, animal Animals are a major group of mostly multicellular, eukaryotic organisms of the kingdom Animalia or Metazoa. Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later on in their life. Most animals are motile, meaning they can move spontaneously and independently. All animals are also stolons are external skeletons.

Contents

In botany

In botany Botany, plant science, phytology, or plant biology is a branch of biology that involves the scientific study of plant life. Botany covers a wide range of scientific disciplines concerned with the study of plants, algae and fungi, including structure, growth, reproduction, metabolism, development, diseases, chemical properties, and evolutionary, stems A stem is one of two main structural axes of a vascular plant. The stem is normally divided into nodes and internodes, the nodes hold buds which grow into one or more leaves, inflorescence , cones or other stems etc. The internodes distance one node from another. The term shoots is often confused with stems; shoots generally refer to new fresh which grow at the soil Soil is a natural body consisting of layers of mineral constituents of variable thicknesses, which differ from the parent materials in their morphological, physical, chemical, and mineralogical characteristics. It is composed of particles of broken rock that have been altered by chemical and environmental processes that include weathering and surface or below ground form new plants at the ends or at the nodes A stem is one of two main structural axes of a vascular plant. The stem is normally divided into nodes and internodes, the nodes hold buds which grow into one or more leaves, inflorescence , cones or other stems etc. The internodes distance one node from another. The term shoots is often confused with stems; shoots generally refer to new fresh. Stolons are often called runners. Imprecisely they are stems that run atop or just under the ground; more specifically, a stolon is a horizontal shoot from a plant Plants are living organisms belonging to the kingdom Plantae. They include familiar organisms such as trees, herbs, bushes, grasses, vines, ferns, mosses, and green algae. The scientific study of plants, known as botany, has identified about 350,000 extant species of plants, defined as seed plants, bryophytes, ferns and fern allies. As of 2004, that grows on top of or below the soil surface with the ability to produce new clones Cloning in biology is the process of producing similar populations of genetically identical individuals that occurs in nature when organisms such as bacteria, insects or plants reproduce asexually. Cloning in biotechnology refers to processes used to create copies of DNA fragments , cells (cell cloning), or organisms. The term also refers to the of the same plant from buds at the tip.[1]

Stolons are stems

Stolons are similar to normal stems except they produce adventitious roots In vascular plants, the root is the organ of a plant that typically lies below the surface of the soil. This is not always the case, however, since a root can also be aerial or aerating (growing up above the ground or especially above water). Furthermore, a stem normally occurring below ground is not exceptional either (see rhizome). So, it is at the nodes and run horizontally rather than vertically. They also have long internodes with reduced leaves, with the exception of stolons in aqueous plants. Plants with stolons or stolon-like rhizomes In botany, a rhizome is a characteristically horizontal stem of a plant that is usually found underground, often sending out roots and shoots from its nodes. Rhizomes may also be referred to as creeping rootstalks or rootstocks are called stoloniferous. A stolon is a plant propagation Seeds and spores can be used for reproduction . Seeds are typically produced from sexual reproduction within a species, since because genetic recombination has occurred plants grown from seed may have different characteristics to its parents. Some species produce seed that require special conditions to germinate, such as cold treatment. The seed strategy and the complex of individuals formed by a mother plant and all its clones Cloning in biology is the process of producing similar populations of genetically identical individuals that occurs in nature when organisms such as bacteria, insects or plants reproduce asexually. Cloning in biotechnology refers to processes used to create copies of DNA fragments , cells (cell cloning), or organisms. The term also refers to the produced from stolons form a single genetic individual. Runners are a type of stolon that exist above ground and are produced by many plants, such as strawberries The garden strawberry is a common plant of the genus Fragaria cultivated worldwide for its aggregate accessory fruit, the strawberry. The fruit is widely appreciated, mainly for its characteristic aroma but also for its bright red color, and it is consumed in large quantities, either fresh or in prepared foods such as preserves, fruit juice, pies,. Stolons lack the same type of reduced leaves that rhizomes have at the nodes; stolons have scale-like leaves, and new roots are formed only at the nodes, while rhizomes typically have paper-like leaves at the nodes. Typically, stolons have very long internodes A stem is one of two main structural axes of a vascular plant. The stem is normally divided into nodes and internodes, the nodes hold buds which grow into one or more leaves, inflorescence , cones or other stems etc. The internodes distance one node from another. The term shoots is often confused with stems; shoots generally refer to new fresh that form new plants at the ends. These rise to the soil surface and can produce foliage and flowers. In contrast, rhizomes most often have short internodes with leaf-scars and thin paper-like leaves and root along the under side of the stem. Root formation does not correspond strictly to the nodes but roots can generate from areas around the scar-like nodes as well.

Morphology

Stoloniferous growth by Eleocharis palustris

Stolons are like long branches of a tree that grow horizontal to the soil surface and produce new plants at the ends, they have nodes and internodes, leaves that are reduced to scales and buds that grow into roots and shoots. Stolons arise from the base of the plant[2]. In strawberries the base is above the soil surface; in many bulb-forming species and plants with rhizomes, the stolons remain underground and form shoots that rise to the surface at the ends or from the nodes. The nodes of the stolons produce roots, often all around the node and hormones produced by the roots cause the stolon to initiate shoots with normal leaves.[3] Typically after the formation of the new plant the stolon dies away[4] in a year or two, while rhizomes persist normally for many years or for the life of the plant, adding more length each year to the ends with active growth. Rhizomes are used as storage structures for nutrients and most often are covered with thin papery leaves (normally a translucent brownish color), while stolons are not covered with reduced leaves but have scales like leaves at the nodes that are most often white in color. Stolons look and act like etiolated stems except for their orientation of growth, instead of stretching upward for light they grow laterally or downward. The horizontal growth of stolons results from the interplay of different hormones produced at the growing point and hormones from the main plant, with some studies showing that stolon and rhizome growth effected by the amount of shady light the plant receives with increased production and branching from plants exposed to mixed shade and sun, while plants in all day sun or all shade producing fewer stolons.[5]

Often the general meaning of stolon (horizontal stems above ground) does not distinguish morphologically the differences between stolons and rhizomes but just differentiates rhizome and stolon from each other strictly by where they are found, with rhizomes being below ground. Though this generalization is imprecise with a number of plants having soil level or above ground rhizomes including Iris Iris is a genus of 260 species of flowering plants with showy flowers. It takes its name from the Greek word for a rainbow, referring to the wide variety of flower colors found among the many species. As well as being the scientific name, iris is also very widely used as a common name; for one thing, it refers to all Iris species, though some species and many orchid Orchidaceae, commonly referred to as the Orchid family, is a morphologically diverse and widespread family of monocots. It is currently believed to be the second largest family of flowering plants , with between 21,950 and 26,049 currently accepted species, found in 880 genera. The number of orchid species equals more than twice the number of bird species. Because of this some botany texts now use the term underground stolon to refer to stolons that move under ground.[6]

T. Holm (1929) restricted the term rhizome to a horizontal, usually subterranean, stem that produces roots from its lower surface and green leaves from its apex, developed directly from the plumule of the embryo. He recognized stolons as axillary, subterranean branches that do not bear green leaves but only membranaceous, scale-like ones.[7]

Plants with stolons

'Lipstick' hybrid strawberry (Potentilla palustris × Fragaria × ananassa) along stolons.

In some Cyperus Cyperus is a large genus of about 600 species of sedges, distributed throughout all continents in both tropical and temperate regions. They are annual or perennial plants, mostly aquatic and growing in still or slow-moving water up to 0.5 m deep. The species vary greatly in size, with small species only 5 cm tall, while others can reach 5 m in species the stolons end with the growth of tubers; the tubers are swollen stolons that form new plants[8].

Some species In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are often used, such as similarity of DNA, morphology or of crawling plants can also sprout adventitious roots, but are not considered stoloniferous: a stolon is sprouted from an existing stem and can produce a full individual. Examples of plants that extend through stolons include some species from the genera In biology, a genus is a low-level taxonomic rank (a taxon) used in the classification of living and fossil organisms, which is an example of definition by genus and differentia. The term comes from Latin genus "descent, family, type, gender", cognate with Greek: γένος – genos, "race, stock, kin" Argentina (silverweed), Cynodon Cynodon is a genus of nine species of grasses, native to warm temperate to tropical regions of the Old World. The genus as a whole as well as its species are commonly known as Bermuda Grass or Dog's Tooth Grass. This species of grass can be found in grasslands of Africa or the Savannahs of Africa (savanna), Fragaria The garden strawberry is a common plant of the genus Fragaria cultivated worldwide for its aggregate accessory fruit, the strawberry. The fruit is widely appreciated, mainly for its characteristic aroma but also for its bright red color, and it is consumed in large quantities, either fresh or in prepared foods such as preserves, fruit juice, pies,, and Pilosella (Hawkweeds), Zoysia Zoysia is a genus of eight[verification needed] species of creeping grasses native to southeastern and eastern Asia (north to China and Japan) and Australasia. These species, commonly called zoysia or zoysiagrass, are found in coastal areas or grasslands. The genus is named after the Austrian botanist Karl von Zois japonica, Ranunculus repens.

Other plants with stolons below the soil surface include many grasses, Ajuga, Mentha Mentha is a genus of flowering plants in the family Lamiaceae (Mint Family). The species are not clearly distinct and estimates of the number of species varies from 13 to 18. Hybridization between some of the species occurs naturally. Many other hybrids as well as numerous cultivars are known in cultivation. The genus has a subcosmopolitan,[9] and Stachys.

Lily-of-the-valley (Convallaria majalis) which has rhizomes that grow stolon-like stems called stoloniferous rhizomes or leptomorph rhizomes. A number of plants have stoloniferous rhizomes including Asters[10] These stolon-like rhizomes are long and thin, with long internodes and indeterminate growth with lateral buds at the node that mostly remain dormant.

In potatoes, the stolons[11] start to grow within 10 days of plants emerging above ground, with tubers Tubers are various types of modified plant structures that are enlarged to store nutrients. They are used by plants to survive the winter or dry months and provide energy and nutrients for regrowth during the next growing season and they are a means of asexual reproduction. Two different groups of tubers are: stem tubers, and root tubers usually beginning to form on the end of the stolons.[12] The tubers are modified stolons[13] that hold food reserves with a few buds that grow into stems. Since it is not a rhizome it does not generate roots, but the new stem growth that grows to the surface produces roots. See also BBCH-scale (potato)

A spider plant Spider plants have long narrow leaves that are 20–40 cm long and 5–20 mm (0.2–0.8 in) broad, which grow from a central rosette. At the spot where a leaf would normally develop a node, these plants will produce adventitious roots down into the soil, and new above ground shoots. It also produces branched stolons with small white flowers and extending a stolon to produce offspring.

Hydrilla use stolons that produce tubers to spread themselves and survive dry periods in aquatic habitats.[14]

Erythronium Erythronium is a genus of 20-30 species of spring-flowering perennial plants with long, tooth-like bulbs and attractive pendant flowers, native to forest and meadow in temperate regions of the Northern Hemisphere commonly called Trout Lily, have white stolons growing from the bulb. Most run horizontally, either underground or along the surface of the ground under leaf litter. Flowering plants often produce no stolons.[15] A number of bulbous forming species produce stolons with Erythronium propullans producing one stolon below the soil surface on the midway point of the stem on blooming plants that produces a new bulb A bulb is a short stem with fleshy leaves or leaf bases. The leaves often function as food storage organs during dormancy. On non blooming plants 1 to 3 stolons are produce directly from the bulbs, each ending in a new clone Cloning in biology is the process of producing similar populations of genetically identical individuals that occurs in nature when organisms such as bacteria, insects or plants reproduce asexually. Cloning in biotechnology refers to processes used to create copies of DNA fragments , cells (cell cloning), or organisms. The term also refers to the.[16]

Convolvulus arvensis is a weed species in agriculture that spreads by under ground stolons that produce rhizomes.[17]

In studies on grass Grasses, or more technically graminoids, are monocotyledonous, usually herbaceous plants with narrow leaves growing from the base. They include the "true grasses", of the Poaceae family, as well as the sedges (Cyperaceae) and the rushes (Juncaceae). The true grasses include cereals, bamboo and the grasses of lawns (turf) and grassland species, with plants that produce stolons or rhizomes and plants that produce both stolons and rhizomes; morphological and physiological differences where noticed. Stolons have longer internodes and function as means of seeking out light and were used for propagation of the plant, while rhizomes are used as storage organs for carbohydrates and the maintenance of meristem tissue to keep the parent plant alive from one year to the next.[18]

Mycology

In mycology Mycology is the branch of biology concerned with the study of fungi, including their genetic and biochemical properties, their taxonomy and their use to humans as a source for tinder, medicinals (e.g., penicillin), food (e.g., beer, wine, cheese, edible mushrooms) and entheogens, as well as their dangers, such as poisoning or infection, a stolon is defined as an occasionally septate hyphae A hypha is a long, branching filamentous structure of a fungus, and also of unrelated Actinobacteria. In most fungi, hyphae are the main mode of vegetative growth, and are collectively called a mycelium; yeasts are unicellular fungi that do not grow as hyphae, which connect sporangiophores together. Root-like structures called rhizoids may appear on the stolon as well, anchoring the hyphae to the substrate In biology a substrate is the surface a plant or animal lives upon. The substrate can include biotic or abiotic materials. For example, encrusting algae that lives on a rock can be substrate for another animal that lives on top of the algae. See also substrate. The stolon is commonly found in bread molds, and are seen as horizontally expanding across the mold.

Zoology

This section requires expansion.

Some bryozoans form colonies through connection of individual units by stolons. Other colonies include sheets and erect colonies.[19]

See also

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Centella
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Centella

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Wed, 11 Nov 2009 01:30:00 GM

Centella asiatica is a chronic terna without bars, but with short rhizome and . Stolon. -a creeping . Stolon. length 10 cm - 80 cm, roots out of each bulb, much branched to form a new plant. Single leaf, long-stemmed approximately 5 cm - 15 ...

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