Articles tagged with Hybrid Sterility
Research on hybrid threespine stickleback fish found that genetic signatures of hybrid incompatibilities are environment-dependent. Fish raised in ponds had a lower incidence of mismatched genes due to ecological pressures, whereas lab-reared fish showed no difference in heterozygosity.
Researchers studied spider mite populations to understand evolutionary patterns of reproductive isolation, finding a positive relationship between genetic distance and isolation. The study supports the prevailing view of reproductive barrier evolution in diploid animals.
A new study has dissected the unique phenomenon of fertility-sterility transition at molecular level using systems biology approach in a single environment-sensitive genic male sterile (EGMS) line of pigeonpea. The research identified key transcription factor REVEILLE1 regulating auxin levels to explain fertility transition.
Researchers at Hokkaido University identified a single gene that causes hybrid sterility in rice, a major reproductive barrier between species. The discovery could help improve crop yields and address food shortages.
New research from Queen Mary University of London found that polyploid hybrids in the Nicotiana genus can have wider flower openings, making them less vulnerable to extinction. This allows a wider range of pollinators to access their flowers.
A new study by Queen Mary University of London and the University of California, Riverside found that polyploid hybrids in the genus Nicotiana have shorter and wider flower openings than their parent species. This allows a wider range of pollinators to enter the flowers, making them less vulnerable to extinction. The researchers sugges...
Researchers identify a missing hybrid incompatibility gene in Drosophila melanogaster and D. simulans, shedding light on speciation mechanisms. The discovery paves the way for further studies on the biological pathways disrupted in hybrid offspring.
A new study reveals that protein imbalances, rather than sequence differences, play a crucial role in mediating reproductive isolation between closely related species. The Lmr and Hmr genes, which form a Dobzhansky-Muller gene pair, are responsible for this phenomenon.
Researchers have identified three genes responsible for hybrid sterility in rice, controlling fertility in indica-japonica hybrids by targeting female gametes and stabilizing cell membranes. The study may lead to the development of non-lethal hybrid combinations, improving crop genetics.
A study found that a mis-regulated plant immune system can establish reproductive barriers, potentially leading to speciation. Researchers discovered that hybrid necrosis, a syndrome affecting unfit hybrids, is caused by a common group of genes being more strongly or weakly active in the hybrids than in their parents.
Researchers identified two genes from different fruit fly species that interfere with each other, preventing male offspring production. This finding supports the Dobzhansky-Muller model, which suggests hybrid incompatibilities are caused by diverged genes from a common ancestor.
Biologists discover a candidate hybrid compatibility gene that exhibits functional divergence, confirming its status as a true speciation gene. The findings provide new insights into the molecular mechanisms of reproductive isolation, which is crucial for defining species.