organellar-genetics
Organellar genetics is the study of genes located within plant chloroplasts and mitochondria, which contain their own DNA separate from the nuclear genome. This field is vital for understanding plant evolution and inheritance patterns, as organellar DNA often exhibits unique transmission modes and evolutionary dynamics distinct from nuclear genes. Understanding organellar genetics is also essential for advancing photosynthesis research and agricultural productivity, making it a key area of plant biotechnology research.
PubMed · 2026-02-19
Fern chloroplasts contain mobile genes that behave like genetic parasites, moving around and replicating independently from the rest of the plant's genome. This discovery challenges assumptions about plant genetic stability and reveals a new mechanism for how plants acquire genes from their environment.
Study of 30 Anemiaceae fern species revealed MORFFOs with exceptionally high substitution rates—much faster than other plastid genes—indicating intense evolutionary activity
MORFFOs are mobile genetic elements with dynamic locations that replicate independently outside plastids, functioning as selfish genetic elements
Evidence of horizontal gene transfer and intracellular gene transfer mechanisms enabling fern plastomes to acquire and maintain these mobile genes
