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Tannins and copper sulphate as antimicrobial agents to prevent contamination of Posidonia oceanica seedling culture for restoration purposes

Articolo
Data di Pubblicazione:
2024
Abstract:
Seed-based restoration methods are increasingly recognized as a relevant tool contributing to halt and reverse the loss of seagrass meadows while providing genetic and evolutionary benefit for the conservation of these habitats. Ad-hoc protocols aimed at maximizing the survival of plantlets obtained from seeds in cultivation systems are therefore required. Previous trials of seedling culture of Posidonia oceanica, the dominant seagrass of the Mediterranean Sea, recorded up to 40% loss due to mould development. In this study we aim to (i) identify the putative causal agents of seed decay and (ii) test the efficacy of copper sulphate (0.2 and 2 ppm) and of tannin-based products derived from chestnut, tara and quebracho in reducing seed and seedling decay, while assessing possible phytotoxic effects on plant development. Halophytophthora lusitanica, H. thermoambigua and a putative new Halophytophtora species were identified as possible causal agents of seed loss. The antimicrobial agents (copper and tannins) reduced seed contamination by 20%, although copper sulphate at 2 ppm strongly inhibited the root growth. Among tannins, chestnut and tara reduced seeds germination by up to 75% and decreased shoot and root development, while quebracho showed a less severe phytotoxic effect. The use of copper sulphate at 0.2 ppm is therefore recommended to prevent P. oceanica seedling loss in culture facilities since it reduces seed contamination with no phytotoxic effects. Our results contribute to improving the seedling culture of one the key species of the Mediterranean Sea, increasing propagule availability for restoration purposes.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
Posidonia oceanica, seed cultivation, tannins, copper sulphate, seagrass propagation, pathogen, peronosporales, Halophytophthora
Elenco autori:
Alagna A, Giacalone VM, Zenone A, Martinez M, D’Anna G, Buffa G, Cavalca CJ, Poli A, Varese GC, Prigione VP, Badalamenti F
Autori di Ateneo:
POLI Anna
PRIGIONE Valeria Paola
VARESE Giovanna, Cristina
Link alla scheda completa:
https://iris.unito.it/handle/2318/2032121
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/2032121/1422306/fpls-15-1433358.pdf
Pubblicato in:
FRONTIERS IN PLANT SCIENCE
Journal
Progetto:
Strengthening the MIRRI Italian Research Infrastructure... -SUS-MIRRI.IT,PNRR MUR M4C2–Investimento 3.1 "Fondo per la realizzazione di un sistema integrato di infrastrutture di ricerca e innovazione" D.D. n. 3264 del 28/12/21, cod. MUR IR0000005
  • Dati Generali
  • Aree Di Ricerca

Dati Generali

URL

https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2024.1433358/full

Aree Di Ricerca

Settori (12)


LS8_12 - Microbial ecology and evolution - (2024)

LS8_13 - Marine biology and ecology - (2024)

CIBO, AGRICOLTURA e ALLEVAMENTI - Agricoltura e Produzioni Vegetali

CIBO, AGRICOLTURA e ALLEVAMENTI - Allevamento e Produzioni Animali

CIBO, AGRICOLTURA e ALLEVAMENTI - Chimica e cibo

CIBO, AGRICOLTURA e ALLEVAMENTI - Farmacologia Veterinaria

CIBO, AGRICOLTURA e ALLEVAMENTI - Miglioramento e difesa delle colture

MEDICINA, SALUTE e BENESSERE - Ricerca Traslazionale e Clinica

PIANETA TERRA, AMBIENTE, CLIMA, ENERGIA e SOSTENIBILITA' - Energia e Fonti Energetiche

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PIANETA TERRA, AMBIENTE, CLIMA, ENERGIA e SOSTENIBILITA' - Risorsa suolo e ambiente

SCIENZE DELLA VITA e FARMACOLOGIA - Interazioni tra molecole, cellule, organismi e ambiente
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