Month: September 2022

GENE TURNOVER. "The birth and death of genes is central to adaptive evolution, yet the underlying genome dynamics remain elusive." https://lnkd.in/d-Wf9Jd View in LinkedIn

DRIVERS OF TURNOVER. "One of the unique insights provided by the growing number of fully sequenced genomes is the pervasiveness of gene duplication and gene loss." http://www.ncbi.nlm.nih.gov/pubmed/19153999 View in LinkedIn

DYNAMIC PROCESS. "While gene family evolution is pervasive, it may be especially important in our own evolution since it appears that the "revolving door" of gene duplication and loss has undergone multiple accelerations in the lineage leading to humans." http://www.ncbi.nlm.nih.gov/pubmed/19153999 View in LinkedIn

DEATH OF DE NOVO GENES. "The high rate of de novo gene birth in combination with a rather constant number of genes over time predicts that many of the de novo genes have only a short lifetime." http://www.sciencedirect.com/science/article/pii/S0168952515000347 View in LinkedIn

FRAGMENT FROM NATURE continues and concludes this weekend on the subject of floral fusions and their evolution and functions. These chimeric plant organs are driven by boundaries at a cellular and genetic level. Boundaries define the morphological transitions in flowers. Come and enjoy a deeper appreciation of the enormous diversity of flowers and how they got to be what they are, and speculate on where they may be headed. View in LinkedIn

FUSION EVOLUTION. "Unlike perianth fusion, which occurs early in angiosperm evolution and defines large clades, stamen fusion occurs multiple times independently and does not tend to define major angiosperm clades, although it is locally important for species-level diversification and is likely to have adaptive significance given the impact on mating patterns in plant populations." https://lnkd.in/dD4GcAS View in LinkedIn

"STAMEN FUSION, including fusion of filaments, fusion of anthers and fusion to the style, can be found in over 70 families of flowering plants occurring independently with differing mechanisms of fusion." https://lnkd.in/dD4GcAS View in LinkedIn

FITNESS FUNCTION. "Interestingly, fusion of filaments alone is typically found in the early diverging angiosperms in flowers with many petals, while fusion events involving both anthers (connective) and filament are typically correlated with petal fusion, indicating that stamen fusion may have adaptive significance in flowers with tubular petals, increasing fitness through improved mechanisms of pollen reception or dispersal." https://lnkd.in/dD4GcAS View in LinkedIn

"ANTHER FUSION has been demonstrated to enhance pollen removal in the flower of Campsis grandiflora, one of many flowers with didynamous (two pairs of unequal length) stamens." https://lnkd.in/dD4GcAS View in LinkedIn

ANGIOSPERM FUSIONS. "During the evolution of the angiosperm flower, the ovule-bearing carpels become enrolled and sealed with the ovules inside, with carpel fusion being a derived state for the angiosperm flower. Once the carpel is formed, syncarpy, or the congenital fusion of multiple carpels to form a multicarpellate ovary, dominates angiosperm evolution, with an estimated 80% of all angiosperms bearing syncarpous ovaries." https://lnkd.in/dD4GcAS View in LinkedIn