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C4 Photosynthesis
carbon fixation or the Hatch–Slack pathway is one of three known photosynthetic processes of carbon fixation in plants. It owes the names to the 1960s discovery by Marshall Davidson Hatch and Charles Roger Slack. fixation is an addition to the ancestral and more common carbon fixation. The main carboxylating enzyme in photosynthesis is called RuBisCO, which catalyses two distinct reactions using either (carboxylation) or oxygen (oxygenation) as a substrate. RuBisCO oxygenation gives rise to phosphoglycolate, which is toxic and requires the expenditure of energy to recycle through photorespiration. photosynthesis reduces photorespiration by concentrating around RuBisCO. To enable RuBisCO to work in a cellular environment where there is a lot of carbon dioxide and very little oxygen, leaves generally contain two partially isolated compartments called mesophyll cells and bundle-sheath cells. is initially fixed in the mesophyll cells in a reaction catalysed by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C4 Plant Anatomy
C4, C04, C.IV, C-4, or C-04 often refers to C-4 (explosive), the explosive. It may refer to: Places * Caldwell 4 or NGC 7023 or Iris Nebula, a reflection nebula in the constellation Cepheus * Circumferential Road 4 or C-4, an arterial road of Manila, Philippines * Ken-Ō Expressway, a road in Japan (includes some sections of Shin-Shōnan Bypass) *Omote-sandō Station, a Tokyo Metro subway station (station number: C-04) *Wadi C-4, designation for the Tomb of Thutmose II People * C4 (rapper), a rap music producer from Birmingham, England * Clarence Mitchell IV, American radio host and former politician * Chris Turner, sometimes credited as Chris Heiner, a.k.a. "C4", Australian musician, part of Modern Day Poets Computing *C4 (conference), a Macintosh software developers conference * C4 Engine, a next-generation 3D game engine * C4 model, a graphical notation technique for diagramming software architecture * Cx4 chip, an add-on microprocessor chip employed by certain Super NES ga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reductive Pentose Phosphate Cycle
The Calvin cycle, light-independent reactions, bio synthetic phase, dark reactions, or photosynthetic carbon reduction (PCR) cycle of photosynthesis is a series of chemical reactions that convert carbon dioxide and hydrogen-carrier compounds into glucose. The Calvin cycle is present in all photosynthetic eukaryotes and also many photosynthetic bacteria. In plants, these reactions occur in the stroma, the fluid-filled region of a chloroplast outside the thylakoid membranes. These reactions take the products ( ATP and NADPH) of light-dependent reactions and perform further chemical processes on them. The Calvin cycle uses the chemical energy of ATP and the reducing power of NADPH from the light-dependent reactions to produce sugars for the plant to use. These substrates are used in a series of reduction-oxidation (redox) reactions to produce sugars in a step-wise process; there is no direct reaction that converts several molecules of to a sugar. There are three phases to the light ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Starch
Starch or amylum is a polymeric carbohydrate consisting of numerous glucose units joined by glycosidic bonds. This polysaccharide is produced by most green plants for energy storage. Worldwide, it is the most common carbohydrate in human diets, and is contained in large amounts in staple foods such as wheat, potatoes, maize (corn), rice, and cassava (manioc). Pure starch is a white, tasteless and odorless powder that is insoluble in cold water or Alcohol (chemistry), alcohol. It consists of two types of molecules: the linear and helix, helical amylose and the branched amylopectin. Depending on the plant, starch generally contains 20 to 25% amylose and 75 to 80% amylopectin by weight. Glycogen, the energy reserve of animals, is a more highly branched version of amylopectin. In industry, starch is often converted into sugars, for example by malting. These sugars may be fermentation, fermented to produce ethanol in the manufacture of beer, whisky and biofuel. In addition, sugars ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bundle Sheath Cell
A vascular bundle is a part of the transport system in vascular plants. The transport itself happens in the stem, which exists in two forms: xylem and phloem. Both these tissues are present in a vascular bundle, which in addition will include supporting and protective tissues. There is also a tissue between xylem and phloem, which is the cambium. The xylem typically lies towards the axis (adaxial) with phloem positioned away from the axis (abaxial). In a stem or root this means that the xylem is closer to the centre of the stem or root while the phloem is closer to the exterior. In a leaf, the adaxial surface of the leaf will usually be the upper side, with the abaxial surface the lower side. The sugars synthesized by the plant with sun light are transported by the phloem, which is closer to the lower surface. Aphids and leaf hoppers feed off of these sugars by tapping into the phloem. This is why aphids and leaf hoppers are typically found on the underside of a leaf ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vascular Bundle
A vascular bundle is a part of the transport system in vascular plants. The transport itself happens in the stem, which exists in two forms: xylem and phloem. Both these tissues are present in a vascular bundle, which in addition will include supporting and protective tissues. There is also a tissue between xylem and phloem, which is the cambium. The xylem typically lies towards the axis ( adaxial) with phloem positioned away from the axis ( abaxial). In a stem or root this means that the xylem is closer to the centre of the stem or root while the phloem is closer to the exterior. In a leaf, the adaxial surface of the leaf will usually be the upper side, with the abaxial surface the lower side. The sugars synthesized by the plant with sun light are transported by the phloem, which is closer to the lower surface. Aphids and leaf hoppers feed off of these sugars by tapping into the phloem. This is why aphids and leaf hoppers are typically found on the underside of a l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wreath
A wreath () is an assortment of flowers, leaves, fruits, twigs, or various materials that is constructed to form a ring shape. In English-speaking countries, wreaths are used typically as household ornaments, most commonly as an Advent and Christmas decoration. They are also used in ceremonial events in many cultures around the globe. They can be worn as a chaplet around the head, or as a garland around the neck. Etymology The word ''wreath'' comes from Middle English ''wrethe'' and from Old English ''writha'' 'band'. History Ancient Etruscan wreaths Wreaths were a design used in ancient times in southern Europe. The most well-known are pieces of Etruscan civilization jewelry, made of gold or other precious metals. Symbols from Greek myths often appear in the designs, embossed in precious metal at the ends of the wreath. Ancient Roman writers referred to Etruscan ''corona sutilis'', which were wreaths with their leaves sewn onto a background. These wreaths rese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leaf
A leaf (: leaves) is a principal appendage of the plant stem, stem of a vascular plant, usually borne laterally above ground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, flower, and fruit collectively form the Shoot (botany), shoot system. In most leaves, the primary Photosynthesis, photosynthetic Tissue (biology), tissue is the palisade mesophyll and is located on the upper side of the blade or lamina of the leaf, but in some species, including the mature foliage of ''Eucalyptus'', palisade mesophyll is present on both sides and the leaves are said to be isobilateral. The leaf is an integral part of the stem system, and most leaves are flattened and have distinct upper (Glossary of botanical terms#adaxial, adaxial) and lower (Glossary of botanical terms#abaxial, abaxial) surfaces that differ in color, Trichome, hairiness, the number of stomata (pores that intake and output gases), the amount and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cross Section Of Maize, A C4 Plant
A cross is a religious symbol consisting of two intersecting lines, usually perpendicular to each other. The lines usually run vertically and horizontally. A cross of oblique lines, in the shape of the Latin letter X, is termed a saltire in heraldic terminology. The cross shape has been widely officially recognized as an absolute and exclusive religious symbol of Christianity from an early period in that religion's history.''Christianity: an introduction'' by Alister E. McGrath 2006 pages 321-323 Before then, it was used as a religious or cultural symbol throughout , in |
Yuri Karpilov
Yuri may refer to: People Given name *Yuri (Slavic name), the Slavic masculine form of the given name George, including a list of people with the given name Yuri, Yury, etc. *Yuri (Japanese name), feminine Japanese given names, including a list of people and fictional characters * Yu-ri (Korean name), Korean unisex given name, including a list of people and fictional characters Mononym Singers *Yuri (Japanese singer), vocalist of the band Move * Yuri (Korean singer), member of Girl Friends *Yuri (Mexican singer) Footballers *Yuri (footballer, born 1982), full name Yuri de Souza Fonseca, Brazilian football forward * Yuri (footballer, born 1984), full name Yuri Adriano Santos, Brazilian footballer * Yuri (footballer, born 1986), full name Yuri Vera Cruz Erbas, Brazilian footballer *Yuri (footballer, born 1989), full name Yuri Naves Roberto, Brazilian football defensive midfielder * Yuri (footballer, born 1990), full name Yuri Savaroni Batista da Silva, Brazilian footballer * Yuri ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hugo P
Hugo or HUGO may refer to: Arts and entertainment * Hugo (film), ''Hugo'' (film), a 2011 film directed by Martin Scorsese * Hugo Award, a science fiction and fantasy award named after Hugo Gernsback * Hugo (franchise), a children's media franchise based on a troll ** Hugo (game show) , ''Hugo'' (game show), a television show that first ran from 1990 to 1995 ** Hugo (video game) , ''Hugo'' (video game), several video games released between 1991 and 2000 * Hugo (album), a 2022 album by Loyle Carner People and fictional characters * Victor Hugo, a French poet, novelist, and dramatist of the Romantic movement. * Hugo (name), including lists of people with Hugo as a given name or surname, as well as fictional characters * Hugo Cabral (born 1988), Brazilian footballer * Hugo Chávez, president of Venezuela 1999-2013 * Hugo Gernsback, Luxembourgish American publisher (born 1884) * Hugo (musician), Thai American actor and singer-songwriter Chula Chak Charbonnages (born 1981) * Hugo (footba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water-use Efficiency
Water-use efficiency (WUE) refers to the ratio of plant biomass to water lost by transpiration, can be defined either at the leaf, at the whole plant or a population/stand/field level: *leaf level : photosynthetic water-use efficiency (also called instantaneous water-use efficiency WUEinst), which is defined as the ratio of the rate of net CO2 carbon assimilation (photosynthesis) to the rate of transpiration or stomatal conductance, then called intrinsic water-use efficiency (iWUE or Wi) *plant level : water-use efficiency of productivity (also called integrated water-use efficiency or transpiration efficiency,TE), which is typically defined as the ratio of dry biomass produced to the rate of transpiration. * field level : based on measurements of CO2 and water fluxes over a field of a crop or a forest, using the eddy covariance technique Research to improve the water-use efficiency of crop plants has been ongoing from the early 20th century, however with difficulties to actua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stomatal Conductance
Stomatal conductance, usually measured in mmol m−2 s−1 by a porometer, estimates the rate of gas exchange (i.e., carbon dioxide uptake) and transpiration (i.e., water loss as water vapor) through the leaf stomata as determined by the degree of stomatal aperture (and therefore the physical resistances to the movement of gases between the air and the interior of the leaf). The stomatal conductance, or its inverse, stomatal resistance, is under the direct biological control of the leaf through its guard cells, which surround the stomatal pore. The turgor pressure and osmotic potential of guard cells are directly related to the stomatal conductance. Stomatal conductance is a function of stomatal density, stomatal aperture, and stomatal size. Stomatal conductance is integral to leaf level calculations of transpiration. Multiple studies have shown a direct correlation between the use of herbicides and changes in physiological and biochemical growth processes in plants, particularly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
