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Rescooped by gisela gerje from Research
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Engineers Make Electrical Contact to Graphene on It's 1-Atom-Thick Edge

Engineers Make Electrical Contact to Graphene on It's 1-Atom-Thick Edge | química | Scoop.it

Graphene has presented all sorts of barriers for efforts to apply the material to electronics. It lacks a band gap, so research has focused on engineering one into it. Then even if you could engineer a band gap into the material, its challenging to manufacture at a high quality and high volume. Another big obstacle is that graphene does not lend itself to being stacked with other materials, something that could be important to making graphene ICs. The reason is that electrical contacts have to be placed on the top surface of the graphene, making the layering of another material on top of those contacts complicated.


Via Alin Velea
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Rescooped by gisela gerje from Rice Blast
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Nitric oxide: an effective weapon of the plant or the pathogen? - Molecular Plant Pathology -

Nitric oxide: an effective weapon of the plant or the pathogen? -  Molecular Plant Pathology - | química | Scoop.it

Abstract

An explosion of research in plant NO biology during the last two decades has revealed that nitric oxide (NO) is a key signal involved in plant development, abiotic stress responses and plant immunity. In the course of evolutionary changes microorganisms parasitizing on plants have developed highly effective offensive strategies, in which NO seems to be implicated as well. NO production was evidenced in several plant pathogens including fungi, but the origin of NO seems to be as puzzling as in plants. So far, published studies are spread over multiple species of pathogenic microorganisms in various developmental stages; however, the data clearly indicate that pathogen-derived NO is an important regulatory molecule involved not only in developmental processes, but also in pathogen virulence and its survival in the host. This review is also focused on the search for potential mechanisms, by which pathogens convert NO message into a physiological response or detoxify both endo- and exogenous NO. Finally, reaching for the data available from the model bacteria and yeast, a basic draft for the mode of NO action in phytopathogenic microorganisms is proposed.


Via Christophe Jacquet, Elsa Ballini
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