scholarly journals Hydration–dehydration of cell cytoskeleton proteins and the problem of aging

2021 ◽  
Vol 13 (2) ◽  
pp. 137-140
Author(s):  
Vladimir I. Yashkichev ◽  
Keyword(s):  
Influence Of Temperature ◽  
Cell Cytoskeleton

The role of water in cell cytoskeleton proteins and the change in its volume under the influence of temperature are considered. The mechanism of cell pulsation is proposed, the leading factor of which is

PHYSIOLOGIC SPECIALIZATION OF OAT STEM RUST IN CANADA

1944 ◽  
Vol 22c (5) ◽  
pp. 201-216 ◽  
Author(s):  
Margaret Newton ◽  
T. Johnson
Keyword(s):  
Stem Rust ◽  
Wide Distribution ◽  
Puccinia Graminis ◽  
Characteristic Type ◽  
Influence Of Temperature ◽  
Physiologic Specialization ◽  
Influence Of Temperature On ◽  
Physiologic Races

An account is given of the results of studies on the physiologic specialization of Puccinia graminis Avenae Erikss. and Henn. in Canada since the inception of the work. Twelve physiologic races were identified from 2586 isolates studied during the period 1921 to 1943. The annual surveys of the prevalence of physiologic races during this period show that each year races 1, 2, and 5 have comprised the bulk of the oat stem rust in all parts of Canada. The predominance of these races has been greatest in the three Prairie Provinces, where barberry is virtually non-existent. In regions where barberry is present, other races of greater range of pathogenicity have been found more frequently than in these three provinces. The occurrence of such races, however, was sporadic until 1943, in which year races 8, 10, and 11 attained a wide distribution, apparently traceable to wind-borne urediospores from the south. There is evidence that the strains of these races present in 1943 remain in the uredial stage for much longer periods than do strains of the same races collected in previous years—a fact that may have favoured their spread in this year.The role of barberry in the origination of generally virulent physiologic races is discussed. The possibility that such races may also originate by mutation is suggested by spontaneous pathogenic changes that occurred, in the greenhouse, in a culture of race 3 that gave rise to several cultures of race 7.The effect of environment on the identification of physiologic races is demonstrated by the seasonal influences on the reaction of the variety Sevnothree to races 1 and 11. On this variety the characteristic type 1 is frequently replaced, in summer, by type x.Experiments on the influence of temperature on the reaction of adult oat plants to stem rust showed that a constant temperature of about 80° F. does not appreciably affect the reaction of White Tartar and Richland, or of other varieties with the same type of resistance, but is capable of breaking down the resistance of certain varieties derived from the crosses Hajira × Joanette, Hajira × Banner, and Victoria × (Hajira × Banner).

scholarly journals Regulation of Cell Cytoskeleton and Membrane Mechanics by Electric Field: Role of Linker Proteins

2009 ◽  
Vol 96 (2) ◽  
pp. 717-728 ◽  
Author(s):  
Igor Titushkin ◽  
Michael Cho
Keyword(s):  
Electric Field ◽  
Membrane Mechanics ◽  
Cell Cytoskeleton

scholarly journals Factors Affecting Concentrations of Airborne Conidia of Oidium sp. Among Poinsettias in a Greenhouse

Plant Disease ◽  
2000 ◽  
Vol 84 (10) ◽  
pp. 1089-1095 ◽  
Author(s):  
J. M. Byrne ◽  
M. K. Hausbeck ◽  
B. D. Shaw
Keyword(s):  
Relative Humidity ◽  
Rapid Decrease ◽  
Disease Development ◽  
Factors Affecting ◽  
Influence Of Temperature ◽  
Large Numbers ◽  
Airborne Conidia ◽  
Influence Of Temperature On ◽  
Atmospheric Concentrations

Atmospheric concentrations of Oidium sp. conidia in two research greenhouses containing infected poinsettias were monitored to investigate the role of environment in prompting conidial release and dissemination. Hourly concentrations of conidia of Oidium sp. were estimated using a Burkard volumetric spore sampler. The influence of temperature on disease development was studied by placing healthy poinsettias in each greenhouse for 7-day periods, removing them, and recording the days to the appearance of the first colony. When averaged over 5 December to 1 June, atmospheric conidial concentrations in greenhouse (GH) 2 were greatest during 1000 to 1800 hours with a peak (325 conidia/m3/h) occurring at 1200 hours. In GH 11, peak concentrations occurred at 1300 hours (65 conidia/m3/h) and 1600 hours (75 conidia/m3/h). Large numbers of conidia were sampled (≥100/m3) within 1-h periods, indicating conidial release events (CREs). Fluctuations in relative humidity (RH) (either positive or negative) prompted CREs. In both greenhouses, the highest number of CREs (up to 23) occurred following RH fluctuations of 5 to 15%. Watering resulted in an immediate increase (≤25%) followed by a rapid decrease in RH (≤32%) beginning 1 to 2 h later. In GH 2 and GH 11, 89 and 48%, respectively, of the CREs occurred within 3 h following greenhouse watering. When greenhouse temperatures exceeded 25°C for 21 days in May (GH 2) and 19 days in March (GH 11), atmospheric conidial concentrations were reduced 80 and 75% from the previous months, respectively.

Role of protein phosphatase 2A in the regulation of endothelial cell cytoskeleton structure

2006 ◽  
Vol 98 (4) ◽  
pp. 931-953 ◽  
Author(s):  
Krisztina Tar ◽  
Csilla Csortos ◽  
Istvan Czikora ◽  
Gabor Olah ◽  
Shwu-Fan Ma ◽  
...  
Keyword(s):  
Endothelial Cell ◽  
Protein Phosphatase ◽  
Protein Phosphatase 2A ◽  
Cell Cytoskeleton ◽  
Phosphatase 2A

The Role of C6/36 Cell Cytoskeleton in the Replication of Kunjin Virus

1988 ◽  
pp. 144-151 ◽  
Author(s):  
M. L. Ng ◽  
S. S. Hong
Keyword(s):  
Cell Cytoskeleton

Role of Temperature and Moisture in the Production and Maturation of Gibberella zeae Perithecia

Plant Disease ◽  
2006 ◽  
Vol 90 (5) ◽  
pp. 637-644 ◽  
Author(s):  
N. S. Dufault ◽  
E. D. De Wolf ◽  
P. E. Lipps ◽  
L. V. Madden
Keyword(s):  
North America ◽  
Water Potential ◽  
Fusarium Head Blight ◽  
Fusarium Graminearum ◽  
Gibberella Zeae ◽  
Head Blight ◽  
Influence Of Temperature ◽  
The Future ◽  
Controlled Environments

Fusarium graminearum (teleomorph Gibberella zeae) is the most common pathogen of Fusarium head blight (FHB) in North America. Ascospores released from the perithecia of G. zeae are a major source of inoculum for FHB. The influence of temperature and moisture on perithecial production and development was evaluated by monitoring autoclaved inoculated cornstalk sections in controlled environments. Perithecial development was assessed at all combinations of five temperatures (12, 16, 20, 24, and 28°C) and four moisture levels with means (range) -0.45 (-0.18, -1.16), -1.30 (-0.81, -1.68), -2.36 (-1.34, -3.53) and -4.02 (-2.39, -5.88) MPa. Moisture levels of -0.45 and -1.30 MPa and temperatures from 16 to 24°C promoted perithecial production and development. Temperatures of 12 and 28°C and moisture levels of -2.36 and -4.02 MPa either slowed or limited perithecial production and development. The water potential of -1.30 MPa had mature perithecia after 10 days at 20°C, but not until after 15 days for 24°C. In contrast, few perithecia achieved maturity and produced ascospores at lower moisture levels (-2.36 and -4.02 MPa) and low (12°C) and high (28°C) temperatures. In the future, it may be possible to use the information gathered in these experiments to improve the accuracy of FHB forecasting systems.

Thermal luminescence quenching of amine-functionalized silicon quantum dots: a pH and wavelength-dependent study

2015 ◽  
Vol 17 (37) ◽  
pp. 24078-24085 ◽  
Author(s):  
Surajit Chatterjee ◽  
Tushar Kanti Mukherjee
Keyword(s):  
Quantum Dots ◽  
Luminescence Quenching ◽  
Excitation Wavelength ◽  
Silicon Quantum Dots ◽  
Influence Of Temperature ◽  
Amine Functionalized ◽  
Influence Of Temperature On ◽  
Amine Groups

The influence of temperature on the PL properties of silicon quantum dots (Si QDs) as a function of pH and excitation wavelength has been investigated to understand the role of surface amine groups and the bandgap of allylamine-capped Si QDs.

Influence of temperature and the role of chromium on the kinetics of sulfidation of 310 stainless steel

1978 ◽  
Vol 12 (2) ◽  
pp. 111-138 ◽  
Author(s):  
D. Bhogeswara Rao ◽  
Howard G. Nelson
Keyword(s):  
Stainless Steel ◽  
Influence Of Temperature ◽  
310 Stainless Steel ◽  
Kinetics Of

scholarly journals Malaria in England: with Special Reference to the Role of Temperature and Humidity

1921 ◽  
Vol 19 (3) ◽  
pp. 320-332 ◽  
Author(s):  
C. A. Gill
Keyword(s):  
Meteorological Factors ◽  
Past History ◽  
Active Infection ◽  
Precise Location ◽  
Influence Of Temperature ◽  
The Past ◽  
The United Kingdom ◽  
Temperature And Humidity ◽  
History Of

(1) The study of the meteorological circumstances prevailing in the United Kingdom confirms the conclusions reached in India that the combined influence of temperature and humidity plays an important part in determining the conditions necessary for the transmission of malaria.(2) The part assigned to temperature and humidity points to the conclusion that the period of active infection in England is ordinarily limited to the months of July and August.(3) The part attributed to temperature accounts for the geographical distribution of the endemic area of malaria in the British Isles and explains its limitation to certain parts of England.(4) The combined influence of temperature and humidity appears to afford an explanation of the precise location of the endemic centres of malaria within the above area.(5) The part assigned to temperature and humidity elucidates certain points in connexion with the endemiology of malaria in England, and it offers an explanation of the conditions known as “Malaria sine Paludism” and “Paludism sine Malaria.”(6) The part played by the meteorological factors throws light on the past history of malaria in England and it helps to explain its gradual decline.

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