Cross-Generation Effects for Cold Resistance in Tropical Populations of Drosophila-Melanogaster and Drosophila-Simulans

1995 ◽  
Vol 43 (1) ◽  
pp. 51 ◽  
Author(s):  
MJO Watson ◽  
AA Hoffmann
Keyword(s):  
Drosophila Melanogaster ◽  
Cold Stress ◽  
Maternal Effects ◽  
Cold Resistance ◽  
Drosophila Simulans ◽  
Small Decrease ◽  
Paternal Effects ◽  
F2 Generation ◽  
Different Levels

Cross-generation effects on the cold resistance of Drosophila melanogaster and D. simulans were investigated by exposing adults to different levels of cold stress and testing the resistance of female F1s and F2s. Maternal and paternal treatments had different effects on progeny resistance. Maternal effects were not detected for either species when progeny were held at 25-degrees-C, but were detected when progeny were acclimated at 13-degrees-C prior to testing. When dams were exposed to a non-lethal cold stress following acclimation, the cold resistance of their progeny was increased, particularly in D. simulans. Grandmaternal exposure to 13-degrees-C and a non-lethal stress led to a small decrease in the cold resistance of D. melanogaster, and a small increase in the resistance of D. simulans. When sires of D. melanogaster and D. simulans were exposed to a cold stress, the resistance of their progeny decreased when progeny were tested without acclimation at 13-degrees-C, but decreased only in D. melanogaster when progeny were acclimated. Paternal effects were smaller than maternal effects and were not evident in the F2 generation.

scholarly journals X- and Y-chromosome linked paternal effects on a life-history trait

2011 ◽  
Vol 8 (1) ◽  
pp. 71-73 ◽  
Author(s):  
Urban Friberg ◽  
Andrew D. Stewart ◽  
William R. Rice
Keyword(s):  
Drosophila Melanogaster ◽  
Life History ◽  
Parental Care ◽  
Maternal Effects ◽  
Phenotypic Variation ◽  
Genetic Material ◽  
Life History Trait ◽  
Paternal Effects ◽  
Epigenetic Effects ◽  
Males And Females

Males and females usually invest asymmetrically in offspring. In species lacking parental care, females influence offspring in many ways, while males only contribute genetic material via their sperm. For this reason, maternal effects have long been considered an important source of phenotypic variation, while paternal effects have been presumed to be absent or negligible. The recent surge of studies showing trans-generational epigenetic effects questions this assumption, and indicates that paternal effects may be far more important than previously appreciated. Here, we test for sex-linked paternal effects in Drosophila melanogaster on a life-history trait, and find substantial support for both X- and Y-linked effects.

scholarly journals PSEUDOTUMORS AND FITNESS IN DROSOPHILA MELANOGASTER AND DROSOPHILA SIMULANS

Genetics ◽  
1961 ◽  
Vol 46 (8) ◽  
pp. 971-981
Author(s):  
A Di Pasquale ◽  
S Koref-Santibaňez
Keyword(s):  
Drosophila Melanogaster ◽  
Drosophila Simulans

scholarly journals Comparative Transcriptome Analysis Reveals Potential Gene Modules Associated with Cold Tolerance in Sugarcane (Saccharum officinarum L.)

2021 ◽  
Author(s):  
Xing Huang ◽  
Yongsheng Liang ◽  
Baoqing Zhang ◽  
Xiupeng Song ◽  
Yangrui Li ◽  
...  
Keyword(s):  
Cold Stress ◽  
Cold Tolerance ◽  
Cold Resistance ◽  
Soluble Sugar ◽  
Resistance Mechanism ◽  
Saccharum Officinarum ◽  
Calcium Signal ◽  
Protein Kinase Activity ◽  
Comparative Transcriptome ◽  
Climate Conditions

AbstractSugarcane is an important crop worldwide, and most sugar is derived directly from sugarcane. Due to its thermophilic nature, the yield of sugarcane is largely influenced by extreme climate conditions, especially cold stress. Therefore, the development of sugarcane with improved cold tolerance is an important goal. However, little is known about the multiple mechanisms underlying cold acclimation at the bud stage in sugarcane. In this study, we emphasized that sensitivity to cold stress was higher for the sugarcane variety ROC22 than for GT42, as determined by physical signs, including bud growth capacity, relative conductivity, malonaldehyde contents, and soluble sugar contents. To understand the factors contributing to the difference in cold tolerance between ROC22 and GT42, comparative transcriptome analyses were performed. We found that genes involved in the regulation of the stability of the membrane system were the relative determinants of difference in cold tolerance. Additionally, genes related to protein kinase activity, starch metabolism, and calcium signal transduction were associated with cold tolerance. Finally, 25 candidate genes, including 23 variety-specific and 2 common genes, and 7 transcription factors were screened out for understanding the possible cold resistance mechanism. The findings of this study provide candidate gene resources for cold resistance and will improve our understanding of the regulation of cold tolerance at the bud stage in sugarcane.

scholarly journals Introgression of Drosophila simulans Nuclear Pore Protein 160 in Drosophila melanogaster Alone Does Not Cause Inviability but Does Cause Female Sterility

Genetics ◽  
2010 ◽  
Vol 186 (2) ◽  
pp. 669-676 ◽  
Author(s):  
Kyoichi Sawamura ◽  
Kazunori Maehara ◽  
Shotaro Mashino ◽  
Tatsuo Kagesawa ◽  
Miyuki Kajiwara ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Drosophila Simulans ◽  
Female Sterility ◽  
Nuclear Pore ◽  
Nuclear Pore Protein ◽  
Pore Protein
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