Comparison of Yellow Holocyclic and Green Anholocyclic Strains of Myzus persicae (Sulzer): Low Temperature Adaptability

1982 ◽  
Vol 11 (1) ◽  
pp. 231-233 ◽  
Author(s):  
George Tamaki ◽  
Barry Annis ◽  
Lee Fox ◽  
Raj Kumar Gupta ◽  
Andras Meszleny
Keyword(s):  
Low Temperature ◽  
Myzus Persicae ◽  
Temperature Adaptability

scholarly journals A Flexible Rechargeable Zinc–Air Battery with Excellent Low‐Temperature Adaptability

2020 ◽  
Vol 59 (12) ◽  
pp. 4793-4799 ◽  
Author(s):  
Zengxia Pei ◽  
Ziwen Yuan ◽  
Chaojun Wang ◽  
Shenlong Zhao ◽  
Jingyuan Fei ◽  
...  
Keyword(s):  
Low Temperature ◽  
Air Battery ◽  
Temperature Adaptability

Evidence for a possible fitness trade-off between insecticide resistance and the low temperature movement that is essential for survival of UK populations of Myzus persicae (Hemiptera: Aphididae)

1997 ◽  
Vol 87 (6) ◽  
pp. 573-579 ◽  
Author(s):  
S. P. Foster ◽  
R. Harrington ◽  
A. L. Devonshire ◽  
I. Denholm ◽  
S. J. Clark ◽  
...  
Keyword(s):  
Low Temperature ◽  
Insecticide Resistance ◽  
Myzus Persicae ◽  
Low Temperatures ◽  
Leaf Fall ◽  
Extreme Resistance ◽  
Resistance Level ◽  
Trade Off ◽  
Maladaptive Behaviour ◽  
Esterase Production

AbstractApterous aphids need to move from ageing to younger leaves in order to survive UK winters. This behaviour was studied at low temperatures in field and laboratory trials using Myzus persicae (Sulzer) clones representing all five recognized categories of esterase-based insecticide resistance found in UK populations. Both studies showed that the tendency of aphids to move from deteriorating leaves was inversely related to their insecticide resistance level. This maladaptive behaviour associated with greater insecticide resistance could lead to increased risks of aphids becoming separated from plants after leaf fall, and subsequent death from starvation when adverse cold and wet conditions prevent return. Revertant clones, that had spontaneously lost extreme resistance to insecticides by ceasing to express their amplified esterase genes, tended to show similar behaviour to aphids that had retained their high resistance phenotypes. This implies that rates of movement were not related directly to esterase production.

scholarly journals Temperature Environmental Adaptability Research of HNIW/FOX-7 Based PBXs

2021 ◽  
Author(s):  
Guanchao Lan ◽  
Hui Chao ◽  
Na Wang ◽  
Bo Yan ◽  
Xiao Li ◽  
...  
Keyword(s):  
Low Temperature ◽  
Elastic Moduli ◽  
Crystal Form ◽  
Temperature Cycle ◽  
Maximum Increase ◽  
Thermal Stabilities ◽  
Temperature Shock ◽  
Mass Size ◽  
Environmental Adaptability ◽  
Temperature Adaptability

Abstract In this study, HNIW/FOX-7 based PBX modeling powders and PBX columns were treated by LT (low temperature), HT (high temperature), HLC (high-low temperature cycle) and HLS (high-low temperature shock) to study temperature environmental adaptability of HNIW/FOX-7 based PBXs. Then SEM, IR, XRD and DSC were used to study the variation of PBX modeling powders after LT, HT, HLC and HLS treatments; in addition, the mass, size and mechanical properties of PBX columns were characterized after different temperature adaptability treatments as well. The results indicate that the change ratios of mass and size of HNIW/FOX-7 based PBX columns are less than 1%, illustrating that mass and size of PBX columns are at acceptable level after different temperature adaptability treatments. The unevenness degree of the surface of PBX modeling powders followed the order of HLC>HT>LT>HLS, which agrees well with mass loss order. Moreover, IR and XRD results indicated that the molecular structure and crystal form of HNIW and FOX-7 did not change after different temperature adaptability treatments. Additionally, thermal stabilities of PBX modeling powders are decreased after different temperature adaptability treatments, among which HLS has the largest influence on HNIW/FOX-based PBX modeling powders. The compression strengths and elastic moduli of HNIW/FOX-based PBX columns are enhanced after different temperature adaptability treatments, among which the strength of PBX columns after HLC has the maximum increase, indicating that HLC has more significant effect on mechanical property.

scholarly journals Chromosome-level genome assemblies of Channa argusandChanna maculata and comparative analysis of their temperature adaptability

GigaScience ◽  
2021 ◽  
Vol 10 (10) ◽  
Author(s):  
Mi Ou ◽  
Rong Huang ◽  
Cheng Yang ◽  
Bin Gui ◽  
Qing Luo ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Low Temperature ◽  
Gene Families ◽  
Temperature Adaptation ◽  
Fish Family ◽  
Transcription Factor Genes ◽  
Immune Related Genes ◽  
Genome Assemblies ◽  
Temperature Adaptability ◽  
Chromosome Level

Abstract Background Channa argus and Channa maculata are the main cultured species of the snakehead fish family, Channidae. The relationship between them is close enough that they can mate; however, their temperature adaptability is quite different. Results In this study, we sequenced and assembled the whole genomes of C. argus and C. maculata and obtained chromosome-level genome assemblies of 630.39 and 618.82 Mb, respectively. Contig N50 was 13.20 and 21.73 Mb, and scaffold N50 was 27.66 and 28.37 Mb, with 28,054 and 24,115 coding genes annotated for C. argus and C. maculata, respectively. Our analyses showed that C. argus and C. maculata have 24 and 21 chromosomes, respectively. Three pairs of chromosomes in C. argus correspond to 3 chromosomes in C. maculata, suggesting that 3 chromosomal fusion events occurred in C. maculata. Comparative analysis of their gene families showed that some immune-related genes were unique or expandable to C. maculata, such as genes related to herpes simplex infection. Analysis of the transcriptome differences related to temperature adaptation revealed that the brain and liver of C. argus rapidly produced more differentially expressed genes than C. maculata. Genes in the FoxO signalling pathway were significantly enriched in C. argus during the cooling process (P < 0.05), and the expression of 3 transcription factor genes in this pathway was significantly different between C. argus and C. maculata (P < 0.01). Conclusions C. maculata may have higher resistance to certain diseases, whereas C. argus has a faster and stronger response to low-temperature stress and thus has better adaptability to a low-temperature environment. This study provides a high-quality genome research platform for follow-up studies of Channidae and provides important clues regarding differences in the low-temperature adaptations of fish.

scholarly journals Low temperature adaptability in red-kerneled rice.

1988 ◽  
Vol 57 (2) ◽  
pp. 281-286 ◽  
Author(s):  
Masahiko ICHII ◽  
Keizo TAMAI
Keyword(s):  
Low Temperature ◽  
Temperature Adaptability

scholarly journals A Flexible Rechargeable Zinc–Air Battery with Excellent Low‐Temperature Adaptability

2020 ◽  
Vol 132 (12) ◽  
pp. 4823-4829 ◽  
Author(s):  
Zengxia Pei ◽  
Ziwen Yuan ◽  
Chaojun Wang ◽  
Shenlong Zhao ◽  
Jingyuan Fei ◽  
...  
Keyword(s):  
Low Temperature ◽  
Air Battery ◽  
Temperature Adaptability

Modelling development time of Myzus persicae (Hemiptera: Aphididae) at constant and natural temperatures

1999 ◽  
Vol 89 (1) ◽  
pp. 53-63 ◽  
Author(s):  
Shu-sheng Liu ◽  
Xue-duo Meng
Keyword(s):  
Low Temperature ◽  
Myzus Persicae ◽  
Green Peach Aphid ◽  
Nonlinear Models ◽  
Adult Emergence ◽  
Weibull Function ◽  
Temperature Threshold ◽  
Temperature Regimes ◽  
Natural Temperature ◽  
Development Methods

AbstractThe development period from birth to adult of alate and apterous virginoparae of the green peach aphid, Myzus persicae (Sulzer), reared on Brassica campestrisssp. chinensis, was measured at 13 constant and five natural temperature regimes. The day–degree model, the logistic equation, and the Wang model were used to describe the relationships between temperature and development rate at constant conditions. The constant temperature–development curves derived from the three models were used with a Weibull function describing the distribution of development times, to simulate the development of individuals of cohorts reared at natural temperature regimes. Comparison of the observed with simulated distributions of adult emergence indicates that all three models can simulate the development of M. persicaevery well when the temperature does not go below 4°C, the notional low temperature threshold of the day–degree model. When accumulation of temperatures below 4°C becomes substantial, only the logistic curve with a low temperature threshold of 0°C can offer accurate simulations; the other two models give falsely longer durations of development. Methods for accurately simulating the development of M. persicae in the field are suggested. The significance of modelling insect development at low temperatures by nonlinear models is discussed.

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