@article{fdi:010092859,
  title = {{R}econstructing the dynamics of past coral endosymbiotic algae communities using coral ancient {DNA} (cora{DNA})},
  author = {{R}ey, {O}. and {D}issard, {D}elphine and {T}oulza, {E}. and {G}uinebert, {T}. and {S}accas, {M}. and {A}llienne, {J}. {F}. and {B}utsher, {J}. and {Z}oubir, {M}. {B}. and {I}wankow, {G}. and {T}ougard, {C}. and {V}idal-{D}upiol, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{M}ost scleractinian corals are under threat from global warming, yet some exhibit remarkable resistance to heat stress. {C}oral thermal tolerance depends on both the intrinsic properties of the cnidarian host and the physiology of their symbiotic algae ({S}ymbiodiniaceae). {S}ome corals adapt to heat stress by altering their {S}ymbiodiniaceae communities, but these shifts are primarily observed over very short evolutionary timescales, leaving a gap in our understanding of coral holobiont evolution over longer periods. {I}n this study, we combined ancient {DNA} analysis from a coral core with a metabarcoding approach to reconstruct past {S}ymbiodiniaceae communities associated with a living colony of {P}orites lobata from {N}ew {C}aledonia over the last century. {U}sing the {S}ym{P}ortal analytical pipeline, we identified 53 'defining intragenomic variants' ({DIV}s) related to {S}ymbiodiniaceae. {T}he number of {S}ymbiodiniaceae {DIV}s per sample ranged from 5 to 22 and showed no correlation with the age of the cora{DNA} sample or the total number of sequences obtained. {O}ur results reveal a generally stable {S}ymbiodiniaceae community associated with {P}. lobata, dominated by the {C}15 clade, though substantial shifts in community composition coincided with an extreme warm winter event. {A}dditionally, we detected the presence of {A}zadinium spinosum ({D}inophyceae) in two cora{DNA} replicates from the same position in the coral core, and sequences of the host {P}. lobata in a subset of samples. {T}his study lays the groundwork for future research into the evolutionary dynamics of coral holobionts at the colony level across extensive temporal scales.},
  keywords = {{C}oral ; {S}ymbiodiniaceae ; {A}ncient {DNA} ; {M}etabarcoding ; {ITS}2},
  booktitle = {},
  journal = {{C}oral {R}eefs},
  volume = {[{E}arly access]},
  numero = {},
  pages = {[11 p.]},
  ISSN = {0722-4028},
  year = {2025},
  DOI = {10.1007/s00338-025-02621-0},
  URL = {https://www.documentation.ird.fr/hor/fdi:010092859},
}