How significant are endophytic fungi in bromeliad seeds and seedlings? Effects on germination, survival and performance of two epiphytic plant species

Leroy, Céline; Maes, Arthur QuyManh; Louisanna, Eliane; Séjalon‐Delmas, Nathalie

doi:10.1016/j.funeco.2019.01.004

Cited by 21 publications

(28 citation statements)

References 81 publications

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“…It suggested that the beneficial fungal associations were not so essential to seed germination but contribute highly to the survival and growth of the seedlings (that will be manifested by the following results). Similar results were also observed in bromeliad (Leroy et al 2019), barley and oat (Murphy et al 2017) inoculated by PGPF species.…”

Section: Discussionsupporting

confidence: 80%

Growth improvement of Lolium multiflorum Lam. induced by seed inoculation with fungus suspension of Xerocomus badius and Serendipita indica

Liu

et al. 2019

AMB Expr

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In this study, a pot experiment was carried out in greenhouse to investigate the potentials of Xerocomus badius and Serendipita indica to penetrate and colonize roots of ryegrass (Lolium multiflorum Lam.) and to induce beneficial effects on seed germination and seedling growth. The results showed that X. badius and S. indica successfully colonized in the root system of L. multiflorum seedlings and the root colonization rate was 72.65% and 88.42%, respectively. By microscopy, the hyphae, chlamydospores and spores produced by S. indica were observed in roots cortex of L. multiflorum seedlings. In comparison with the non-inoculated seedlings, seedlings inoculated with X. badius and S. indica showed significant increase in growth parameters with plant height, basal diameter, biomass accumulation, relative growth rate, leaf relative water content and chlorophyll content. Also, we found that seedlings inoculated with S. indica exhibited a greater growth-promotion as compared with X. badius-inoculated seedlings. No significant influence of the two fungus application has been observed with respect to seed germination. It suggested that well establishments of mutualistic symbiosis between L. multiflorum and X. badius or S. indica were not so essential to seed germination but contributed highly to the survival and growth of the seedlings.

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Section: Discussionsupporting

confidence: 80%

Growth improvement of Lolium multiflorum Lam. induced by seed inoculation with fungus suspension of Xerocomus badius and Serendipita indica

Liu

et al. 2019

AMB Expr

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“…were investigated under different salt and drought conditions. The results indicated that seed priming with X. badius had no significant effect on the GR under non-stress condition (P > 0.05, Tables 4 and 5), that is consistent with our previous study (Liu et al 2019) and studies on bromeliad (Leroy et al 2019), barley and oat (Murphy et al 2017) inoculated by other PGPF species. However, GR was significantly enhanced by seed priming with X. badius under drought and salt stress conditions.…”

Section: Effect Of Seed Priming With X Badius Suspensions On Seed Gesupporting

confidence: 91%

Stress tolerance of Xerocomus badius and its promotion effect on seed germination and seedling growth of annual ryegrass under salt and drought stresses

Liu

et al. 2021

AMB Expr

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Comparative evaluations were conducted to assess the effects of different pH levels, NaCl-induced salt stress, and PEG-induced drought stress on the mycelial growth of Xerocomus badius. The results showed that X. badius mycelium grew well at a wide pH range of 5.00 ~ 9.00. Although the mycelium remained viable, mycelial growth of X. badius was significantly inhibited with increasing salt and drought stresses. Furthermore, a soilless experiment in Petri dishes was performed to investigate the potential of X. badius to induce beneficial effects on seed germination and seedling growth of annual ryegrass (Lolium multiflorum Lam.) under salt and drought stresses. Seed priming with X. badius enhanced the seedling growth of L. multiflorum Lam. under NaCl-induced salt stress and PEG-induced drought stress. However, X. badius did not significantly improve the seed germination under non-stress and mild stress conditions. It suggested that X. badius inoculation with seeds was not essential for seed germination under non-stress and mild stress conditions, but contributed highly to seedling growth under severe stress conditions. Therefore, seed priming with X. badius on ryegrass could be an effective approach to enhance plant tolerance against drought and salt stresses. X. badius could be a good candidate for the inoculation of ectomycorrhizal plants cultivation programs in mild saline and semiarid areas.

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“…Cavazos et al , 2018; Sneck et al , 2017; Leff et al , 2017), and assess the role of these microorganisms on seed survival and germination, seedling growth and health (e.g. Vivas et al , 2017; Leroy et al , 2019), and ultimately tree fitness. The influence of vertically-transmitted microorganisms on seed and seedling secondary metabolites (Chen et al , 2018; Shazad et al , 2018), and their cascading effects on tree biotic interactions (e.g.…”

Section: Resultsmentioning

confidence: 99%

“…A combination of germination experiments in controlled conditions (e.g. Leroy et al , 2019), seed microbiome analyses in common gardens (Vivas et al , 2015), and seed microorganisms manipulation across environments (Gundel et al , 2017) will be required to integrate seed microbial ecology into predictive models of forest dynamics and evolution.…”

Section: Resultsmentioning

confidence: 99%

Maternal effects and environmental filtering shape seed fungal communities in oak trees

Fort

Pauvert

Zanne

et al. 2019

Preprint

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Trees, as foundation species, play a pivotal role in the species interaction networks that constitute forest ecosystems. From the seed stage, they interact with microbial communities that affect their growth, health and fitness. Despite their eco-evolutionary importance, the processes shaping seed microbial communities in natural forests have received little attention.• To unravel these processes, we analyzed the microbial communities of seeds collected in populations of sessile oak (Quercus petraea) growing along elevation gradients. We focused on the fungal communities as this group includes seed pathogens. Ecological processes shaping the communities were quantified using joint species distribution models.• Fungi were present in all seed tissues, including the embryo. Fungal communities differed significantly among oak populations along the elevation gradients, and among mother trees within the same population. These maternal effects remained significant after seed fall, despite colonization by fungal species on the ground. Associations between tree pathogens and their antagonists were detected in the seeds.• Our results demonstrate that both maternal effects and environmental filtering shape seed microbial communities of sessile oak. They provide a starting point for future research aimed at identifying the seed extended phenotypic traits that influence seed dispersal and germination, and seedling survival and growth across environments.

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How significant are endophytic fungi in bromeliad seeds and seedlings? Effects on germination, survival and performance of two epiphytic plant species

Cited by 21 publications

References 81 publications

Growth improvement of Lolium multiflorum Lam. induced by seed inoculation with fungus suspension of Xerocomus badius and Serendipita indica

Growth improvement of Lolium multiflorum Lam. induced by seed inoculation with fungus suspension of Xerocomus badius and Serendipita indica

Stress tolerance of Xerocomus badius and its promotion effect on seed germination and seedling growth of annual ryegrass under salt and drought stresses

Maternal effects and environmental filtering shape seed fungal communities in oak trees

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