Do homokaryotic and dikaryotic Rhizophagus irregularis strains exhibit divergent adaptive strategies in response to contrasting soil P conditions? DOI Creative Commons
Pedro M. Antunes, Catherine Fahey, Nicolas Corradi

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 5, 2025

Abstract Arbuscular mycorrhizal (AM) fungal strains of Rhizophagus irregularis can occur in two genetic groups: homokarya, which nuclei are genetically similar and dikarya, they harbor different nuclear populations. Data show trait conservatism these groups, but their adaptability to environmental changes remains unclear. We tested if dikaryotic potentially adapt faster soil phosphorus (P) conditions than homokaryotic strains. First, the growth responses Allium ampeloprasum L. each four under contrasting P levels (conditioning phase); second, we examined conditioned showed adaptive characteristics (e.g., became more mutualistic) when grown matching across both experimental phases, compared mismatched (adaptive potential phase). In conditioning phase, dikarya were better mutualists (i.e., host biomass promoters) formed vesicles homokarya was high. regardless organization treatment, low those high P. However, not adaptable with host. Instead, any category after experiencing rather conditions. This study suggests that a single generation R. may be sufficient change strength mutualism. As such, fertility optimization pre-conditioning relevant consider applications, AM background.

Language: Английский

Do homokaryotic and dikaryotic Rhizophagus irregularis strains exhibit divergent adaptive strategies in response to contrasting soil P conditions? DOI Creative Commons
Pedro M. Antunes, Catherine Fahey, Nicolas Corradi

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 5, 2025

Abstract Arbuscular mycorrhizal (AM) fungal strains of Rhizophagus irregularis can occur in two genetic groups: homokarya, which nuclei are genetically similar and dikarya, they harbor different nuclear populations. Data show trait conservatism these groups, but their adaptability to environmental changes remains unclear. We tested if dikaryotic potentially adapt faster soil phosphorus (P) conditions than homokaryotic strains. First, the growth responses Allium ampeloprasum L. each four under contrasting P levels (conditioning phase); second, we examined conditioned showed adaptive characteristics (e.g., became more mutualistic) when grown matching across both experimental phases, compared mismatched (adaptive potential phase). In conditioning phase, dikarya were better mutualists (i.e., host biomass promoters) formed vesicles homokarya was high. regardless organization treatment, low those high P. However, not adaptable with host. Instead, any category after experiencing rather conditions. This study suggests that a single generation R. may be sufficient change strength mutualism. As such, fertility optimization pre-conditioning relevant consider applications, AM background.

Language: Английский

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