O QUE SIGNIFICA CYANOGENESIS EM INGLÊS
Cianeto
Um cianeto é qualquer composto químico que contenha o grupo de combinação monovalente CN. Este grupo, conhecido como o grupo ciano, consiste em um átomo de carbono trônico-ligado a um átomo de nitrogênio. Em cianetos inorgânicos, tais como cianeto de sódio, NaCN, este grupo está presente como íon de cianeto poliatómico carregado negativamente; estes compostos, que são considerados sais de ácido cianídrico, são altamente tóxicos. O íon cianeto é isoelétrico com monóxido de carbono e com nitrogênio molecular. A maioria dos cianetos é altamente tóxica. Os cianetos orgânicos geralmente são chamados de nitrilos; nestes, o grupo CN é ligado por uma ligação covalente a um grupo contendo carbono, tal como metilo no cianeto de metilo. O ácido hidrociânico, também conhecido como cianeto de hidrogênio, ou HCN, é um líquido altamente volátil usado para preparar o acrilonitrilo, que é usado na produção de fibras acrílicas, borracha sintética e plásticos. Os cianetos são empregados em uma série de processos químicos, incluindo fumigação, endurecimento por caso de ferro e aço, galvanoplastia e concentração de minérios. Na natureza, as substâncias que produzem cianeto estão presentes em certas sementes, como o poço da cereja selvagem.
definição de cyanogenesis no dicionário inglês
A definição de cianogênese no dicionário é a liberação de certas plantas, como lauris de cereja, de cianeto de hidrogênio, especialmente após ferimento ou invasão por agentes patogênicos.
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10 LIVROS EM INGLÊS RELACIONADOS COM «CYANOGENESIS»
Descubra o uso de
cyanogenesis na seguinte seleção bibliográfica. Livros relacionados com
cyanogenesis e pequenos extratos deles para contextualizar o seu uso na literatura.
1
Cyanide Compounds in Biology
The polymorphism for cyanogenesis in Lotus corniculatus and Trifolium repens
provides ample evidence that cyanogenesis has an important role in plant
defence. This herbivore-plant interaction is, however, far from simple: the degree
of ...
CIBA Foundation Symposium,
2008
2
Plant Variation and Evolution
It is not possible to summarise all the results discovered in experiments, but they
suggest that a number of interacting factors may influence patterns of
cyanogenesis, for there is evidence that water stress, mammal grazing, trampling,
insect ...
3
Toxic Plants of North America
several species of Trifolium are reported to be cyanogenic (Table 35.13),
cyanogenesis is a rare consequence of ruminants grazing T. repens late in a
growing season when rainfall has been poor or erratic (Coop 1949; Vickery et al.
George E. Burrows, Ronald J. Tyrl,
2012
4
Bioactive Compounds from Plants
In herbs, variations in the palatability of leaves are also apparent, notably in the
case of cyanogenesis. Cyanogenic glycosides are bitter tasting and such plants
are normally rejected, quite apart from their poisonous nature. The expression of
...
CIBA Foundation Symposium,
2008
5
Herbivores: Their Interactions with Secondary Plant ...
As early as 1966, Jones (1966) indicated that cyanogenesis polymorphisms in
legumes may be useful in determining the importance of herbivores as selective
agents on plant chemistry and in ascertaining the significance of plant chemistry
in ...
6
Plant Secondary Metabolism
The ability to produce cyanide or Cyanogenesis has long been recognized in
plants. At least 2650 species, from more than 550 genera, and 1 30 families
possess the ability to make Cyanogenic glycosides (Hegnauer, 1986; Seigler,
1991).
7
Introduction to Ecological Biochemistry
The reason why cyanogenesis is high in British populations is probably because
the high winter isotherm means that predators like slugs and snails are active all
the year round. When clover and the trefoil start germinating in the spring, the ...
Jeffrey B. Harborne,
1993
8
Genetic and Evolutionary Diversity: The Sport of Nature
9.3 CYANOGENESIS IN PLANTS The Victorian hero General Charles Gordon
was besieged in Khartoum by the Mahdi in 1884/85. As if there were not enough
other problems, his horses began to die with symptoms of cyanide poisoning.
Laurence Martin Cook, Robert S. Callow,
1999
9
Annual Plant Reviews, Biochemistry of Plant Secondary Metabolism
Many publications report that this enzyme is involved in cyanogenesis upon
tissue disruption (Kojima et al., 1979; Conn, 1981), but, in contrast to the
intensive investigation of B-glucosidases, only a few papers have dealt with
HNLs. This may ...
10
Molecular Host Plant Resistance to Pests
Cyanogenic plant species include ferns, gymnosperms, monocotyledonous and
dicotyledonous plants (15-39). Despite the widespread occurrence of
cyanogenesis in plants, the compounds responsible for producing HCN have
been isolated ...
S. Sadasivam, B. Thayumanayan,
2003
5 NOTÍCIAS NAS QUAIS SE INCLUI O TERMO «CYANOGENESIS»
Conheça de que se fala nos meios de comunicação nacionais e internacionais e como se utiliza o termo
cyanogenesis no contexto das seguintes notícias.
The Edge of Evolution: Why Darwin's Mechanism Is Self-Limiting
... and heart disease in humans, gaitedness in horses, loss of cyanogenesis in clover, and a plethora of helpful broken genes in bacteria. «Discovery Institute, jul 14»
An Honor for Elemental (the cyanide version)
The paper's author, David A. Jones, points out that “There are now sufficient examples of plant defense by cyanogenesis for us to conclude that ... «Wired, dez 13»
Self-defending seeds
... bites into the seed, the layers are merged, causing HNL and MN to react and produce hydrogen cyanide, a process known as cyanogenesis. «Chemistry World, dez 13»
The Curious Case of the Poisoned Cows
The paper's author, David A. Jones, points out that “There are now sufficient examples of plant defense by cyanogenesis for us to conclude that ... «Wired News, jun 12»
Genetic differences in clover make one type toxic
“The advantage of the clover cyanogenesis system is there's already so much known about its ecology,” Olsen said. “What we're able to do now ... «News from Washington University in St. Louis, out 07»