Experiments on the life cycle and factors affecting reproduction of Sphaerosporella brunnea provide evidence for rapid asexual propagation by conidiospores and for homothallism in an ectomycorrhizal competitor of cultivated truffle species

Sánchez, Sergio; Gómez, Eduardo Francisco Furrazola; Martı́n, Marı́a P.; Miguel, Ana María de; Urban, Alexander; Barriuso, J.

doi:10.1016/j.funeco.2013.12.003

Cited by 21 publications

(14 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The only EM fungi found in our study other than T. melanosporum was the pioneer, nursery adapted S. brunnea (Sánchez et al 2014). As expected, its occurrence was higher in treatments with lower T. melanosporum colonisation levels, thus suggesting that it was related to gaps left by the latter.…”

Section: Discussionsupporting

confidence: 72%

Fertilisation of Quercus seedlings inoculated with Tuber melanosporum: effects on growth and mycorrhization of two host species and two inoculation methods

García-Barreda¹,

Molina-Grau²,

Reyna³

2017

iForest

View full text Add to dashboard Cite

(4)Modern truffle cultivation is based on use of inoculated seedlings, which should exhibit highly colonised roots as well as a vegetative quality enhancing field plant performance. However, poor shoot and fine root growth has been a frequent issue in inoculated Quercus seedlings production. Fertilisation is a common solution in forest nurseries, but high fertilisation levels have been found to inhibit the formation of ectomycorrhizas of many fungal species. The influence of slow-release fertilisation (52 mg N, 26 mg P and 36 mg K per seedling) on growth and ectomycorrhizal status of Tuber melanosporum-inoculated seedlings was evaluated. Host species Quercus ilex and Quercus faginea and inoculation methods involving root-dipping and root-powdering were tested. Fertilisation increased weight of both host species without significant detrimental effects on ectomycorrhizal colonisation, showing that it can be effectively used in inoculated seedlings production. Both host species showed similar response to fertilisation. The inoculation method affected seedling weight and ectomycorrhizal status, suggesting that some inoculant carriers are able to damage Quercus development and T. melanosporum colonisation. The study provided an important basis for fine-tuning the use of fertilisers in truffle-inoculated seedling production.

show abstract

Section: Discussionsupporting

confidence: 72%

Fertilisation of Quercus seedlings inoculated with Tuber melanosporum: effects on growth and mycorrhization of two host species and two inoculation methods

García-Barreda¹,

Molina-Grau²,

Reyna³

2017

iForest

View full text Add to dashboard Cite

show abstract

“…was not. Previously, S. brunnea has been known primarily as a greenhouse contaminant, and is characterized by rapid growth, forming identifiable ectomycorrhizas in as little as 2 months (Sánchez et al ., ). We also found S. brunnea to be abundant in the willow rhizosphere at high petroleum concentrations in Varennes, Quebec, 230 km southwest of the Valcartier site described here (Bell et al ., ).…”

Section: Discussionmentioning

confidence: 97%

Early rhizosphere microbiome composition is related to the growth and Zn uptake of willows introduced to a former landfill

Bell

Cloutier-Hurteau

Alotaibi

et al. 2015

Environmental Microbiology

View full text Add to dashboard Cite

Although plants introduced for site restoration are pre-selected for specific traits (e.g. trace element bioaccumulation, rapid growth in poor soils), the in situ success of these plants likely depends on the recruitment of appropriate rhizosphere microorganisms from their new environment. We introduced three willow (Salix spp.) cultivars to a contaminated landfill, and performed soil chemical analyses, plant measurements, and Ion Torrent sequencing of rhizospheric fungal and bacterial communities at 4 and 16 months post-planting. The abundance of certain dominant fungi was linked to willow accumulation of Zn, the most abundant trace element at the site. Interestingly, total Zn accumulation was better explained by fungal community structure 4 months post-planting than 16 months post-planting, suggesting that initial microbial recruitment may be critical. In addition, when the putative ectomycorrhizal fungi Sphaerosporella brunnea and Inocybe sp. dominated the rhizosphere 4 months post-planting, Zn accumulation efficiency was negatively correlated with fungal diversity. Although field studies such as this rely on correlation, these results suggest that the soil microbiome may have the greatest impact on plant function during the early stages of growth, and that plant-fungus specificity may be essential.

show abstract

“…The pyrophilous ascomycete S. brunnea is a frequent companion in forest nurseries and considered a contaminant in the production of tree seedlings mycorrhized with edible truffle species [77]. Baum et al [78] observed a higher percentage of Populus trichocarpa fine roots colonized with Laccaria bicolor and P. involutus in soil rich in organic carbon and in nitrogen compared to a nitrogen-poor soil.…”

Section: Mycorrhizal Colonizationmentioning

confidence: 99%

“…Our results indicate that foliar application of NPs might not necessarily harm the biodiversity and function of ectomycorrhizal fungi. However, the ectomycorrhizal fungal species typically present under greenhouse conditions, including opportunistic extremophiles which are well adapted to stressful environments, such as S. brunnea [77], are just a minute subset of ectomycorrhizal biodiversity. It was demonstrated experimentally that S. brunnea propagates rapidly through asexual propagation by conidiospores and homothallism, which makes this fungus a pioneer and opportunist ectomycorrhizal species, and the most common fungal competitor in nurseries producing plants [77].…”

Section: Mycorrhizal Colonizationmentioning

confidence: 99%

The Effect of Silver and Copper Nanoparticles on the Condition of English Oak (Quercus robur L.) Seedlings in a Container Nursery Experiment

Olchowik

Bzdyk

Studnicki

et al. 2017

Forests

View full text Add to dashboard Cite

Some studies indicate that metal nanoparticles can be used in plant cultivation as fungicides and growth stimulators. The aim of this study was to evaluate the effect of silver (AgNPs) and copper nanoparticles (CuNPs) on the growth parameters, on the extent of leaves infected by powdery mildew and on spontaneous ectomycorrhizal colonization of English oak (Quercus robur L.) seedlings growing in containers. Nanoparticles were applied to foliage four times during one vegetation season, at four concentrations: 0, 5, 25 and 50 ppm. The adsorption of NPs to leaves was observed by microscopical imaging (TEM). The tested concentrations of AgNPs and CuNPs did not have any significant effect on the growth parameters of the oak seedlings. TEM results showed disturbances in the shape of plastids, plastoglobules and the starch content of oak leaves treated with 50 ppm Cu-and AgNPs, while no changes in the ultrastructure of stems and roots of oak plants treated with NPs were observed. No significant difference in powdery mildew disease intensity was observed after NP foliar app lication. Four ectomycorrhizal taxa were detected on oak roots (Sphaerosporella brunnea, Thelephora terrestris, Paxillus involutus and Laccaria proxima). Oak seedlings treated (foliar) with CuNPs and AgNPs at 25 ppm were characterised by the highest degree of mycorrhization (respectively, 37.1% and 37.5%) among all treatments including the control treatment. None of the tested NPs manifested phytotoxicity in the examined Q. robur seedlings under container nursery conditions.

show abstract

Experiments on the life cycle and factors affecting reproduction of Sphaerosporella brunnea provide evidence for rapid asexual propagation by conidiospores and for homothallism in an ectomycorrhizal competitor of cultivated truffle species

Cited by 21 publications

References 18 publications

Fertilisation of Quercus seedlings inoculated with Tuber melanosporum: effects on growth and mycorrhization of two host species and two inoculation methods

Fertilisation of Quercus seedlings inoculated with Tuber melanosporum: effects on growth and mycorrhization of two host species and two inoculation methods

Early rhizosphere microbiome composition is related to the growth and Zn uptake of willows introduced to a former landfill

The Effect of Silver and Copper Nanoparticles on the Condition of English Oak (Quercus robur L.) Seedlings in a Container Nursery Experiment

Contact Info

Product

Resources

About