Claim · model-written summary
Five new Frankia species were identified in Casuarina and Coriaria nodules.
Verbatim
e2“We identified five new Frankia species: one Casuarina-infective species from cluster-1c, and four from earlier studies”
e3“Nodules were collected from several countries”
Title
The Chronicles of Nodulation : The LCOs, the Genes and the Evolutionary Trajectories
Obaid, Nadia Binte KTH Publication Database DiVA (KTH Royal Institute of Technology) 2026
Other claims from this paper (5)
- Observation Frankia strains that could not be cultivated have lost the gene set required to produce type-1h [NiFe] uptake hydrogenase.
- Observation The five new Frankia species show evidence of erosion of the genes needed to produce type-1h [NiFe] uptake hydrogenase.
- Mechanism Frankia LCOs suppress plant defence, which may enable infection and nodulation under stressed conditions.
- Observation Frankia strains follow one of two evolutionary trajectories, either towards obligate symbiosis with strong genome erosion or towards rhizosphere colonization with limited genome erosion.
- Observation Uncultivable cluster-1a and cluster-2 Frankia strains show genome size of 4.2 to 5.6 MB, compared with 10 MB in cluster-4.
