High resilience of the mycorrhizal community to prescribed seasonal burnings in a Mediterranean woodland

Livne-Luzon, Stav; Shemesh,; Osem,; Carmel, Yohay; Migael,; Avidan,; Tsafrir,; Glassman,; Bruns,; Ovadia,

doi:10.1101/2020.06.10.141671

Cited by 2 publications

(2 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An alternative consists of using ectomycorrhizal fungi (EcM), particularly at an early stage of seedling development (Dunabeitia et al 2004;Alguacil et al 2005;Caravaca et al 2005;Teste et al 2009). The formation of EcM roots increases seedling vigour when resources are limited and enhances the competitive ability of seedlings during establishment (Perry et al 1989;Nara 2005;Livne-Luzon et al 2017). It has been estimated that about 90 % of the terrestrial plant species undergo an improvement in mineral nutrient uptake due to root symbiosis with mycorrhizal fungi (Brundrett 2009), which in turn, provide the fungus with carbon compounds.…”

mentioning

confidence: 99%

Root-associated fungi of Pinus wallichiana in Kashmir Himalaya

et al. 2018

View full text Add to dashboard Cite

An important factor in the performance of out-planted conifers is the association of plant roots with ectomycorrhizal (EcM) fungi. However, limited information is available about the diversity of root-associated EcM fungi of Pinus wallichiana A.B. Jackson, a coniferous species endemic to Himalayan forests that has hampered the reforestation programs in the area. The study was carried at three major forest areas of the Kashmir Himalaya believed to be pure stands of P. wallichiana. Fine root tips harbouring EcM fungi were collected and processed for extraction of fungal DNA, which was subsequently subjected to ITS rDNA targeted PCR–RFLP profiling. DNA sequencing analysis of the overlapping ITS amplifications followed by global nucleotide BLAST analyses of the assembled nuclear ribosomal DNA (rDNA) revealed a total of 33 fungal taxa associated with P. wallichiana of which 23 species were EcM fungi. Of the 10 non-EcM fungi, we found a peculiar saprophytic wood decaying fungus, Chalara microchona, associated with P. wallichiana for the first time. The study not only reveals the species richness of fungi associated with this conifer but also documents new fungal associations with it, which have not been reported so far. The results in the study set a baseline for the broad association of ectomycorrhizal fungi with P. wallichiana, which may serve as guiding cue to design reforestation programs in the Kashmir Himalaya.

show abstract

mentioning

confidence: 99%

Root-associated fungi of Pinus wallichiana in Kashmir Himalaya

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Instead, these fungi may be activated by temperature thresholds reached during high-severity fires, which are common in chaparral and some Pinaceae forests (Agee, 1993;Keeley & Zedler, 2009;Neary et al, 1999). Specifically, our burned communities were dominated by Ascomycota in the genera Pyronema, Penicillium, and Aspergillus, similar to dominant post-fire fungal species in Mediterranean shrublands (Livne-Luzon et al, 2021), boreal spruce (Whitman et al, 2019), and montane pine forests (Bruns et al, 2020;Pulido-Chavez et al, 2021). Both Pyronema (P. omphalodes) and Aspergillus (A. fumigatus) are known pyrophilous fungi of California chaparral (Dunn et al, 1982), and we identified additional species including P. domesticum, A. udagawae, and A. elsenburgensis.…”

Section: Pyrophilous Fungi Dominate the Burned Communitiesmentioning

confidence: 89%

Rapid bacterial and fungal successional dynamics in first year after Chaparral wildfire

Pulido-Chavez

Randolph

Zalman

et al. 2021

Preprint

View full text Add to dashboard Cite

The rise in wildfire frequency in the western United States has increased interest in secondary succession. However, despite the role of soil microbial communities in plant regeneration and establishment, microbial secondary succession is poorly understood owing to a lack of measurements immediately post-fire and at high temporal resolution. To fill this knowledge gap, we collected soils at 2 and 3 weeks and 1, 2, 3, 4, 6, 9, and 12 months after a chaparral wildfire in Southern California. We assessed bacterial and fungal biomass with qPCR of 16S and 18S and richness and composition with Illumina MiSeq sequencing of the 16S and ITS2 amplicons. We found that fire severely reduced bacterial biomass by 47% and richness by 46%, but the impacts were stronger for fungi, with biomass decreasing by 86% and richness by 68%. These declines persisted for the entire post-fire year, but bacterial biomass and richness oscillated in response to precipitation, whereas fungal biomass and richness did not. Fungi and bacteria experienced rapid succession, with 5-6 compositional turnover periods. As with plants, fast-growing surviving microbes drove successional dynamics. For bacteria, succession was driven by the phyla Firmicutes and Proteobacteria, with the Proteobacteria Massilia dominating all successional time points, and the Firmicutes (Domibacillus and Paenibacillus) dominating early- to mid-successional stages (1-4.5 months), while the Proteobacteria Noviherbaspirillum dominated late successional stages (4.5-1 year). For fungi, succession was driven by the phyla Ascomycota, but ectomycorrhizal basidiomycetes, and the heat-resistant yeast, Geminibasidium were present in the early successional stages (1 month). However, pyrophilous filamentous Ascomycetes Pyronema, Penicillium, and Aspergillus, dominated all post-fire time points. While wildfires vastly decrease bacterial and fungal biomass and richness, similar to plants, pyrophilous bacteria and fungi increase in abundance and experience rapid succession and compositional turnover in the first post-fire year, with potential implications for post-fire chaparral regeneration

show abstract

High resilience of the mycorrhizal community to prescribed seasonal burnings in a Mediterranean woodland

Cited by 2 publications

References 69 publications

Root-associated fungi of Pinus wallichiana in Kashmir Himalaya

Root-associated fungi of Pinus wallichiana in Kashmir Himalaya

Rapid bacterial and fungal successional dynamics in first year after Chaparral wildfire

Contact Info

Product

Resources

About