Year: 2022

CROSSTALK between the chloroplast and mitochondrion in the cell, both originating from ancient bacteria, both critical powerhouses of the cell, must be highly coordinated, and in a common molecular language, despite disparate cultural backgrounds. Equally, between these and the cellular nucleus, another foreign beast engulfed in ancient times. View in LinkedIn

THE ULTIMATE INVASIVE SPECIES. "The nucleus can recruit novel exons even from “junk DNA” derived from plastids and mitochondria, and genes from cyanobacteria or proteobacteria now code in plants for many proteins that are not in their original compartment but have ended up elsewhere in the cell." https://lnkd.in/ePgs9VJ View in LinkedIn

DIATOMS. "In contrast to higher plants and green algae which derive from a primary endosymbiosis, diatoms are now believed to originate from a serial secondary endosymbiosis involving both green and red algae and a heterotrophic exosymbiont host." A Dutch doll ancestry. https://lnkd.in/eFCkB94 View in LinkedIn

EXOSYMBIONT. "Like other eukaryotes, diatom cells contain mitochondria evolved from a single primary endosymbiotic event involving an α-proteobacterium. No trace of mitochondria remain in the secondary endosymbiont, and so it is believed that diatom mitochondria are derived from the exosymbiont." http://jxb.oxfordjournals.org/content/early/2012/01/20/jxb.err441.full View in LinkedIn

UNIQUE DIATOM GENE SET. "Following secondary endosymbiosis, the different genomes of the exosymbiont and endosymbiont are predicted to have combined to form a novel and unique set of genes dispersed within the nuclear, mitochondrial, and chloroplast genomes." http://jxb.oxfordjournals.org/content/early/2012/01/20/jxb.err441.full View in LinkedIn

COMPLEX DIATOM PICTURE. "Considering that such a fusion is thought to involve two nuclear genomes, two mitochondrial genomes, and one plastid genome, the process must have been highly complex and, because it happened so long ago, reconstructing its history has proven extremely difficult." http://jxb.oxfordjournals.org/content/early/2012/01/20/jxb.err441.full View in LinkedIn

DIATOM GENE SHUFFLING. "The collected data suggests multiple gene transfers from the endo- and exosymbiont, from one genome to another, such as genes transferred from the algal plastid to the algal nucleus, and then incorporated into the host, in this case diatom, nucleus." http://jxb.oxfordjournals.org/content/early/2012/01/20/jxb.err441.full View in LinkedIn

DIATOMS VS PLANTS. "While there is evidence of significant gene transfer from the plastid and mitochondrial genomes to the nucleus in higher plants and dinoflagellates, in the diatoms no proof of such gene transfers from the mitochondria to the nucleus were found. The general properties of diatom mitochondrial genomes are indeed more similar to animal than to plant mitochondrial genomes." http://jxb.oxfordjournals.org/content/early/2012/01/20/jxb.err441.full View in LinkedIn

COUNTER-INTUITIVE. "The general properties of diatom mitochondrial genomes are indeed more similar to animal than to plant mitochondrial genomes." http://jxb.oxfordjournals.org/content/early/2012/01/20/jxb.err441.full View in LinkedIn

DIATOMS AND HGT. "Besides providing evidence for the ancient secondary endosymbiotic event at the origin of diatoms (and perhaps all chromalveolates), it was found that diatom genomes also contain a large number of genes (587 in P. tricornutum) proposed to be derived from bacteria by horizontal gene transfer." (HGT = Horizontal Gene Transfer). http://jxb.oxfordjournals.org/content/early/2012/01/20/jxb.err441.full View in LinkedIn