Impact of soil stockpiling on ericoid mycorrhizal colonization and growth of velvetleaf blueberry (<scp><i>Vaccinium myrtilloides</i></scp>) and Labrador tea (<scp><i>Ledum groenlandicum</i></scp>)

Fadaei, Sepideh; Khan, Shahamat U.; Young, Michelle; Sherr, Ira; Zwiazek, Janusz J.

doi:10.1111/rec.13276

Cited by 5 publications

(5 citation statements)

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“…However, this kind of relationship was not observed in this study. Mycosymbioces species are terrestrial saprotrophs, and they are found in the root of plants [ 111 ]. In addition, Podospora species are saprophytic endophytes that commonly occur on trees and grasses as well as soil [ 112 ].…”

Section: Resultsmentioning

confidence: 99%

Fungal Microbiome of Alive and Dead Korean Fir in its Native Habitats

You,

Park,

et al. 2024

Mycobiology

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A rapid decline of Abies koreana has been reported in most of the natural alpine habitats in Korea. It is generally accepted that this phenomenon is due to climate change even though no clear conclusions have been drawn. Most research has focused on abiotic environmental factors, but studies on the relationships between A. koreana and soil fungal microbiomes are scarce. In this study, the rhizoplane and rhizosphere fungal communities in the alive and dead Korean fir trees from its three major natural habitats including Mt. Deogyu, Mt. Halla, and Mt. Jiri in Korea were investigated to identify specific soil fungal groups closely associated with A. koreana . Soil fungal diversity in each study site was significantly different from another based on the beta diversity calculations. Heat tree analysis at the genus level showed that Clavulina , Beauveria , and Tomentella were most abundant in the healthy trees probably by forming ectomycorrhizae with Korean fir growth and controlling pests and diseases. However, Calocera , Dacrymyces , Gyoerffyella , Hydnotrya , Microdochium , Hyaloscypha , Mycosymbioces , and Podospora were abundant in the dead trees. Our findings suggested that Clavulina , Beauveria , and Tomentella are the major players that could be considered in future reforestation programs to establish ectomycorrhizal networks and promote growth. These genera may have played a significant role in the survival and growth of A. koreana in its natural habitats. In particular, the genus Gyoerffyella may account for the death of the seedlings. Our work presented exploratory research on the specific fungal taxa associated with the status of A. koreana .

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Section: Resultsmentioning

confidence: 99%

Fungal Microbiome of Alive and Dead Korean Fir in its Native Habitats

You,

Park,

et al. 2024

Mycobiology

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“…(19 ASVs, 1.7% RA), Hyaloscypha variabilis (12 ASVs, 2.6% RA), H. bicolor (1 ASV, >0.01% RA), Lachnum pygmaum (1 ASV, 0.08% RA), and Mycosymbioces sp. (11 ASVs, 7.2% RA) (Vohník et al, 2005 , 2007 ; Grelet et al, 2009 ; Walker et al, 2011 ; Leopold, 2016 ; Fadaei, 2019 ). This order also contains the dark septate endophytes, Phialocephala fortinii (9 ASVs, 1.2% RA), and P. glacialis (5 ASVs, 0.5% RA), which may have possible beneficial outcomes on the plants they colonize (Newsham, 2011 ; Lukešová et al, 2015 ).…”

Section: Discussionmentioning

confidence: 99%

Limited effect of thermal pruning on wild blueberry crop and its root-associated microbiota

et al. 2022

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Thermal pruning was a common pruning method in the past but has progressively been replaced by mechanical pruning for economic reasons. Both practices are known to enhance and maintain high yields; however, thermal pruning was documented to have an additional sanitation effect by reducing weeds and fungal diseases outbreaks. Nevertheless, there is no clear consensus on the optimal fire intensity required to observe these outcomes. Furthermore, fire is known to alter the soil microbiome as it impacts the soil organic layer and chemistry. Thus far, no study has investigated into the effect of thermal pruning intensity on the wild blueberry microbiome in agricultural settings. This project aimed to document the effects of four gradual thermal pruning intensities on the wild blueberry performance, weeds, diseases, as well as the rhizosphere fungal and bacterial communities. A field trial was conducted using a block design where agronomic variables were documented throughout the 2-year growing period. MiSeq amplicon sequencing was used to determine the diversity as well as the structure of the bacterial and fungal communities. Overall, yield, fruit ripeness, and several other agronomical variables were not significantly impacted by the burning treatments. Soil phosphorus was the only parameter with a significant albeit temporary change (1 month after thermal pruning) for soil chemistry. Our results also showed that bacterial and fungal communities did not significantly change between burning treatments. The fungal community was dominated by ericoid mycorrhizal fungi, while the bacterial community was mainly composed of Acidobacteriales, Isosphaerales, Frankiales, and Rhizobiales. However, burning at high intensities temporarily reduced Septoria leaf spot disease in the season following thermal pruning. According to our study, thermal pruning has a limited short-term influence on the wild blueberry ecosystem but may have a potential impact on pests (notably Septoria infection), which should be explored in future studies to determine the burning frequency necessary to control this disease.

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“…Some ERM structures (17% colonization intensity) were also present in the roots of non-inoculated plants and were tentatively identified as Leohumicola verrucosa. This heat-resistant fungus [27,28] survives soil autoclaving [27] and is commonly present in a variety of soils [28], including the peat that was used in our study as a growth medium [27].…”

Section: Discussionmentioning

confidence: 99%

“…Fungal colonies were grown on plates and subcultured for fungal identification. Molecular identification of the ERM fungi present on the plates was carried out as described earlier [27,45] after extracting total genomic DNA using Sigma Extract-N-Amp Tissue Kit, following the manufacturer's instructions (Sigma-Aldrich, St. Louis, MO, USA). Thus, a total of 114 DNA extracts were obtained from fungal colonies grown on plates from the root tips.…”

Section: Isolation and Identification Of Erm Fungimentioning

confidence: 99%

Inoculation with Ericoid Mycorrhizal Associations Alleviates Drought Stress in Lowland and Upland Velvetleaf Blueberry (Vaccinium myrtilloides) Seedlings

Zwiazek

2021

Plants

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Although velvetleaf blueberry (Vaccinium myrtilloides) is usually associated with sandy (upland) areas of the North American boreal forest, lowland populations can be also found in bogs, suggesting possible adaptations to different site conditions. In this study, we examined the role of ericoid mycorrhizal (ERM) fungi in conferring drought resistance to the upland and lowland velvetleaf blueberry seedlings. The seedlings were inoculated with four ERM fungi (Pezicula ericae, Pezoloma ericae, Meliniomyces variabilis, and Oidiodendron maius) isolated from the roots of ericaceous plants and grown under controlled environmental conditions in sterilized soil. The inoculated and non-inoculated (inoculation control) plants were subsequently subjected to three cycles of drought stress by withdrawing watering. Lowland plants appeared to benefit relatively more from mycorrhizal colonization, compared with the upland plants, in terms of plant growth and drought survival. After three weeks of treatments, the dry weights of non-inoculated well-watered upland plants were higher compared to the non-inoculated lowland plants. However, these differences were offset by the inoculation of plants with ERM fungi, some of which also significantly improved drought resistance characteristics of the upland and lowland plants. There were no major differences in the effects of different ERM fungal species on drought responses of upland and lowland plants. Of the examined ericoid mycorrhizal fungi, inoculation with Pezicula ericae was the most effective in conferring drought resistance characteristics to both upland and lowland seedlings and helped maintain higher shoot water potentials, net photosynthetic, and transpiration rates in plants subjected to drought stress.

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Impact of soil stockpiling on ericoid mycorrhizal colonization and growth of velvetleaf blueberry (Vaccinium myrtilloides) and Labrador tea (Ledum groenlandicum)

Cited by 5 publications

References 77 publications

Fungal Microbiome of Alive and Dead Korean Fir in its Native Habitats

Fungal Microbiome of Alive and Dead Korean Fir in its Native Habitats

Limited effect of thermal pruning on wild blueberry crop and its root-associated microbiota

Inoculation with Ericoid Mycorrhizal Associations Alleviates Drought Stress in Lowland and Upland Velvetleaf Blueberry (Vaccinium myrtilloides) Seedlings

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