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Ernst Münch (historian)
Ernst Münch (26 November 1876 – 9 October 1946) was a German plant physiologist who proposed the pressure flow hypothesis in 1930. He studied in Aschaffenburg, and then in Munich with Robert Hartig. He worked in a number of fields including forest pathology Forest pathology is the research of both biotic and abiotic maladies affecting the health of a forest ecosystem, primarily fungal pathogens and their insect vectors. It is a subfield of forestry and plant pathology. Forest pathology is part ..., resin production, and fungi. He is best known for the phloem pressure flow hypothesis. Works * ''Untersuchungen über Immunität und Krankheitsempfänglichkeit der Holzpflanzen'', Dissertation, Ludwigsburg 1909 (doctorate thesis) * ''Die Stoffbewegungen in der Pflanze'', Jena 1930 * ''Beiträge zur Forstpflanzenzüchtung. Versuche einer Auslesezüchtung durch Einzelstamm-Absaaten bei Fichte. Weitere Beiträge zur Forstpflanzenzüchtung'' us dem wissenschaftlichen Nach ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruchheim
Ruchheim is the far western suburb of Ludwigshafen am Rhein located in the Rhineland-Palatinate state of Germany. In the past Ruchheim was typically a small farming town, now however due to housing estates its population has burgeoned to approximately 6,000 inhabitants. Ruchheim's existence can be traced back to 800 AD when it is mentioned in the Lorsch Codex. It is mentioned in the Wormser wall-building ordinance from around 900 as one of the places that shared responsibility for maintaining the city wall of Worms The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scien ....C. Van De Kieft and J. F. Niermeyer, eds. (1967), ''Elenchus fontium historiae urbanae'' (Leiden: E. J. Brill), pp. 43–44. References {{Authority control Neighbourhoods in Germany ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lechbruck
Lechbruck is a municipality in the district of Ostallgäu in Bavaria in Germany. It lies on the west bank of the river Lech Lech is an English word referring to lecherous behavior or person. Lech may also refer to: People * Lech (name), a name of Polish origin * Lech, founder of Poland, the figure from the legendary Lech, Czech, and Rus * Lech (Bohemian prince) (d. 8 .... References Ostallgäu {{Ostallgäu-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botany
Botany, also called plant science, is the branch of natural science and biology studying plants, especially Plant anatomy, their anatomy, Plant taxonomy, taxonomy, and Plant ecology, ecology. A botanist or plant scientist is a scientist who specialises in this field. "Plant" and "botany" may be defined more narrowly to include only land plants and their study, which is also known as phytology. Phytologists or botanists (in the strict sense) study approximately 410,000 species of Embryophyte, land plants, including some 391,000 species of vascular plants (of which approximately 369,000 are flowering plants) and approximately 20,000 bryophytes. Botany originated as history of herbalism#Prehistory, prehistoric herbalism to identify and later cultivate plants that were edible, poisonous, and medicinal, making it one of the first endeavours of human investigation. Medieval physic gardens, often attached to Monastery, monasteries, contained plants possibly having medicinal benefit. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Von Tubeuf
Carl or Karl von Tubeuf FLS HFRSE (20 January 1862, in Amorbach, Kingdom of Bavaria – 8 February 1941, in Munich, Germany) was a German forestry scientist, mycologist and plant pathologist. He introduced both the term biological control and the use of a biological control to manage a plant disease. He published one of the first books on plant diseases (in German, then translated into English.) In addition to foundational work in plant pathology, he published broadly on other topics including forest botany, dendrology, mycology, and zoology. He discovered new species of gall mites of conifers. Tubeufstrasse in Munich is named after him. Life Karl von Tubeuf was born in Amorbach on 20 January 1862 the son of Simon Anton Freiherr von Tubeuf (1822-1870), and his wife, Luise von Ploennies. He and his brother were educated at the . Tubeuf studied forestry at the Aschaffenburg Forestry Institute in Aschaffenburg (1881-1883), and the University of Munich (1883-1885), completi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pressure Flow Hypothesis
The pressure flow hypothesis, also known as the mass flow hypothesis, is the best-supported theory to explain the movement of sap through the phloem of plants. It was proposed in 1930 by Ernst Münch, a German plant physiologist. Organic molecules such as sugars, amino acids, certain hormones, and messenger RNAs are known to be transported in the phloem through the cells called sieve tube elements. According to the hypothesis, the high concentration of organic substances, particularly sugar, inside the phloem at a source such as a leaf creates a diffusion gradient (osmotic gradient) that draws water into the cells from the adjacent xylem. This creates turgor pressure, also called hydrostatic pressure, in the phloem. The hypothesis states that this is why sap in plants flows from the sugar producers (sources) to sugar absorbers (sinks). Sugar sources and sinks A sugar source is any part of the plant that is producing or releasing sugar. During the plant's growth period, usuall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Physiology
Plant physiology is a subdiscipline of botany concerned with the functioning, or physiology, of plants. Plant physiologists study fundamental processes of plants, such as photosynthesis, respiration, plant nutrition, plant hormone functions, tropisms, nastic movements, photoperiodism, photomorphogenesis, circadian rhythms, environmental stress physiology, seed germination, dormancy and stomata function and transpiration. Plant physiology interacts with the fields of plant morphology (structure of plants), plant ecology (interactions with the environment), phytochemistry (biochemistry of plants), cell biology, genetics, biophysics and molecular biology. Aims The field of plant physiology includes the study of all the internal activities of plants—those chemical and physical processes associated with life as they occur in plants. This includes study at many levels of scale of size and time. At the smallest scale are molecular interactions of photosynthesis and internal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pressure Flow Hypothesis
The pressure flow hypothesis, also known as the mass flow hypothesis, is the best-supported theory to explain the movement of sap through the phloem of plants. It was proposed in 1930 by Ernst Münch, a German plant physiologist. Organic molecules such as sugars, amino acids, certain hormones, and messenger RNAs are known to be transported in the phloem through the cells called sieve tube elements. According to the hypothesis, the high concentration of organic substances, particularly sugar, inside the phloem at a source such as a leaf creates a diffusion gradient (osmotic gradient) that draws water into the cells from the adjacent xylem. This creates turgor pressure, also called hydrostatic pressure, in the phloem. The hypothesis states that this is why sap in plants flows from the sugar producers (sources) to sugar absorbers (sinks). Sugar sources and sinks A sugar source is any part of the plant that is producing or releasing sugar. During the plant's growth period, usuall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aschaffenburg
Aschaffenburg (; Hessian: ''Aschebersch'', ) is a town in northwest Bavaria, Germany. The town of Aschaffenburg, despite being its administrative seat, is not part of the district of Aschaffenburg. Aschaffenburg belonged to the Archbishopric of Mainz for more than 800 years. The town is located at the westernmost border of Lower Franconia and separated from the central and eastern part of the '' Regierungsbezirk'' (administrative region) by the Spessart hills, whereas it opens towards the Rhine-Main plain in the west and the north-west. Therefore, the inhabitants speak neither Bavarian nor East Franconian but rather a local version of Rhine Franconian. Geography Location The town is located on both sides of the Main in north-west Bavaria, bordering to Hesse. On a federal scale it is part of central Germany, just southeast of Frankfurt am Main. In the western part of the municipality, the smaller Aschaff flows into the Main. The region is also known as ''Bayerische ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Munich
Munich is the capital and most populous city of Bavaria, Germany. As of 30 November 2024, its population was 1,604,384, making it the third-largest city in Germany after Berlin and Hamburg. Munich is the largest city in Germany that is not a state of its own. It ranks as the 11th-largest city in the European Union. The metropolitan area has around 3 million inhabitants, and the broader Munich Metropolitan Region is home to about 6.2 million people. It is the List of EU metropolitan regions by GDP#2021 ranking of top four German metropolitan regions, third largest metropolitan region by GDP in the European Union. Munich is located on the river Isar north of the Alps. It is the seat of the Upper Bavaria, Upper Bavarian administrative region. With 4,500 people per km2, Munich is Germany's most densely populated municipality. It is also the second-largest city in the Bavarian language, Bavarian dialect area after Vienna. The first record of Munich dates to 1158. The city ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Hartig
Robert Hartig (born: Heinrich Julius Adolph Robert Hartig, 30 May 1839, in Braunschweig – died 9 October 1901, in Munich) was a German forestry scientist and mycologist. He has been called the father of forest pathology. Biography He was educated at the Collegium Carolinum of Braunschweig, and at Berlin. In 1878, he was appointed professor of botany at Munich. Hartig made significant contributions to knowledge of vegetable pathology. Prior to his investigations on the progressive stages of disease in trees, little or nothing had been done in this area, so that Hartig may be considered the founder of arboreal pathology. Hartig worked in Eberswalde (1867–1878) and Munich (1878–1901), mainly in forest pathology Forest pathology is the research of both biotic and abiotic maladies affecting the health of a forest ecosystem, primarily fungal pathogens and their insect vectors. It is a subfield of forestry and plant pathology. Forest pathology is part .... Works * '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forest Pathology
Forest pathology is the research of both biotic and abiotic maladies affecting the health of a forest ecosystem, primarily fungal pathogens and their insect vectors. It is a subfield of forestry and plant pathology. Forest pathology is part of the broader approach of forest protection. Insects, diseases and severe weather events damaged about 40 million ha of forests in 2015, mainly in the temperate and boreal domains. Abiotic factors There are a number of abiotic factors which affect the health of a forest, such as moisture issues like drought, winter-drying, waterlogging resulting from over-abundance or lack of precipitation such as hail, snow, rain. Wind is also an important abiotic factor as windthrow (the uprooting or breaking of trees due to high winds) causes an obvious and direct loss of stability to a forest or its trees. Often, abiotic factors and biotic factors will affect a forest at the same time. For example, if wind speed is 80 km per hour then man ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heinrich Rubner
Heinrich may refer to: People * Heinrich (given name), a given name (including a list of people with the name) * Heinrich (surname), a surname (including a list of people with the name) *Hetty (given name), a given name (including a list of people with the name) Places * Heinrich (crater), a lunar crater * Heinrich-Hertz-Turm, a telecommunication tower and landmark of Hamburg, Germany Other uses * Heinrich event, a climatic event during the last ice age * Heinrich (card game), a north German card game * Heinrich (farmer), participant in the German TV show a ''Farmer Wants a Wife'' * Heinrich Greif Prize, an award of the former East German government * Heinrich Heine Prize, the name of two different awards * Heinrich Mann Prize, a literary award given by the Berlin Academy of Art * Heinrich Tessenow Medal, an architecture prize established in 1963 * Heinrich Wieland Prize, an annual award in the fields of chemistry, biochemistry and physiology * Heinrich, known as Haida in Ja ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
