scholarly journals Studies in the biochemistry of micro-organisms. 103. Metabolites of Alternaria tenuis Auct.: culture filtrate products*

1957 ◽  
Vol 67 (3) ◽  
pp. 390-400 ◽  
Author(s):  
T. Rosett ◽  
R. H. Sankhala ◽  
C. E. Stickings ◽  
M. E. U. Taylor ◽  
R. Thomas
Keyword(s):  
Culture Filtrate ◽  
Alternaria Tenuis ◽  
Micro Organisms

CHEMICAL AND CULTURAL TREATMENTS FOR THE CONTROL OF STORAGE ROTS OF TOMATOES

1963 ◽  
Vol 43 (4) ◽  
pp. 503-507 ◽  
Author(s):  
C. L. Lockhart ◽  
E. W. Chipman
Keyword(s):  
Soil Treatment ◽  
Colletotrichum Coccodes ◽  
Plastic Mulch ◽  
Storage Rots ◽  
Alternaria Tenuis ◽  
Micro Organisms

Significant reduction of storage rots of mature-green tomatoes was obtained with field treatments of Mylone, plastic mulch, trellising, and plastic mulch plus trellising. Mylone soil treatment was more effective than the cultural treatments in 1961, and comparable with them in reducing rots in 1962. Plastic mulch plus trellising gave better control than either plastic mulch or trellising. The dominant micro-organisms causing rots of stored tomatoes were: Colletotrichum coccodes and Alternaria tenuis.

Review of the Radiation Damage Problem of Organic Specimens in Electron Microscopy

1973 ◽  
Vol 31 ◽  
pp. 476-477
Author(s):  
L. Reimer
Keyword(s):  
Electron Microscopy ◽  
Radiation Damage ◽  
Irradiation Time ◽  
Dose Effect ◽  
Primary Process ◽  
Thin Specimen ◽  
Secondary Damage ◽  
Small Doses ◽  
Micro Organisms ◽  
Damage Processes

Most information about a specimen is obtained by elastic scattering of electrons, but one cannot avoid inelastic scattering and therefore radiation damage by ionisation as a primary process of damage. This damage is a dose effect, being proportional to the product of lectron current density j and the irradiation time t in Coul.cm−2 as long as there is a negligible heating of the specimen.Therefore one has to determine the dose needed to produce secondary damage processes, which can be measured quantitatively by a chemical or physical effect in the thin specimen. The survival of micro-organisms or the decrease of photoconductivity and cathodoluminescence are such effects needing very small doses (see table).

Functional amyloid: widespread in Nature, diverse in purpose

2014 ◽  
Vol 56 ◽  
pp. 207-219 ◽  
Author(s):  
Chi L.L. Pham ◽  
Ann H. Kwan ◽  
Margaret Sunde
Keyword(s):  
Spider Silk ◽  
Epigenetic Inheritance ◽  
Fibrillar Structure ◽  
Cytoplasmic Polyadenylation ◽  
Functional Amyloid ◽  
Interacting Protein ◽  
Diverse Range ◽  
Element Binding Protein ◽  
Functional Amyloids ◽  
Micro Organisms

Amyloids are insoluble fibrillar protein deposits with an underlying cross-β structure initially discovered in the context of human diseases. However, it is now clear that the same fibrillar structure is used by many organisms, from bacteria to humans, in order to achieve a diverse range of biological functions. These functions include structure and protection (e.g. curli and chorion proteins, and insect and spider silk proteins), aiding interface transitions and cell–cell recognition (e.g. chaplins, rodlins and hydrophobins), protein control and storage (e.g. Microcin E492, modulins and PMEL), and epigenetic inheritance and memory [e.g. Sup35, Ure2p, HET-s and CPEB (cytoplasmic polyadenylation element-binding protein)]. As more examples of functional amyloid come to light, the list of roles associated with functional amyloids has continued to expand. More recently, amyloids have also been implicated in signal transduction [e.g. RIP1/RIP3 (receptor-interacting protein)] and perhaps in host defence [e.g. aDrs (anionic dermaseptin) peptide]. The present chapter discusses in detail functional amyloids that are used in Nature by micro-organisms, non-mammalian animals and mammals, including the biological roles that they play, their molecular composition and how they assemble, as well as the coping strategies that organisms have evolved to avoid the potential toxicity of functional amyloid.

X-ray Pictures of Micro-organisms

1913 ◽  
Vol 108 (5) ◽  
pp. 115-115
Author(s):  
Alfred Gradenwitz
Keyword(s):  
X Ray ◽  
Micro Organisms
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