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SUMMARY:Microbiome Assembly and Transmission Across the Turion–Vegetativ
 e Growth Cycle in Spirodela polyrhiza
DTSTART;VALUE=DATE-TIME:20260930T074500Z
DTEND;VALUE=DATE-TIME:20260930T080000Z
DTSTAMP;VALUE=DATE-TIME:20260915T055525Z
UID:indico-contribution-2913@cern.ch
DESCRIPTION:Speakers: François Prudot D'Avigny (INRAe BGU)\nDuckweeds are
  small\, fast-growing aquatic plants that provide a useful model for study
 ing plant–microbiome interactions in aquatic environments. Among them\, 
 Spirodela polyrhiza is particularly interesting because it can switch from
  active vegetative growth to dormant turion formation (starch-rich vegetat
 ive propagules)\, in a turion–plant–turion cycle that allows to examin
 e plant-associated microbiome transmission across contrasting developmenta
 l stages within a clonal lineage. We investigated the transmission of epip
 hytic and endophytic microbiomes across the life cycle of S. polyrhiza. Sp
 ecifically\, we examined whether microbial communities associated with tur
 ions persist during germination and vegetative growth\, and whether newly 
 formed turions retain microbial signatures from the preceding plant stage.
  We also compared epiphytic and endophytic fractions to determine whether 
 they display distinct patterns of continuity\, turnover\, and reassembly. 
 Our results indicate that microbiome transmission across the growth cycle 
 involves both persistence and community reassembly. Turion-associated comm
 unities partially overlapped with those of fronds and roots\, showing that
  a subset of microorganisms was retained across developmental transitions\
 , yet with substantial community turnover\, and variation associated with 
 plant genotype and the surrounding medium. Epiphytic and endophytic commun
 ities were not completely differentiated based on their overall compositio
 n. We hypothesize that endophytic communities show stronger persistence ac
 ross developmental transitions\, whereas epiphytic communities are more st
 rongly reshaped by interactions with the surrounding aquatic environment. 
 By resolving microbiome dynamics across the turion–plant–turion cycle\
 , this study clarifies the role of dormant vegetative propagules in mainta
 ining host-associated microbial communities and improves our understanding
  of microbiome transmission in clonal aquatic plants.\n\nhttps://indico.un
 ina.it/event/117/contributions/2913/
LOCATION:Department of Agricultural Sciences of the University of Napoli F
 ederico II\, Portici\, Italy Sala Cinese
URL:https://indico.unina.it/event/117/contributions/2913/
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