White mulch and irrigation increase black truffle soil mycelium when competing with summer truffle in young truffle orchards

Piñuela, Yasmine; Alday, Josu G.; Oliach, Daniel; Castaño, Carles; Bolaño, Francesc; Colinas, Carlos; Bonet, J. A.

doi:10.1007/s00572-020-01018-x

Cited by 14 publications

(13 citation statements)

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“…Although the plantation of our study was irrigated and the competing vegetation had been eliminated, other strategies, such as mechanical tilling practices [ 90 , 91 , 92 ], should be investigated in order to maintain a youthful plantation and avoid the loss of crops after a few years. Therefore, it is necessary to explore the mycelial dynamics over time, because the plantation may be at risk of ageing, with mycelium and mycorrhizae displaced and no ascocarp production.…”

Section: Resultsmentioning

confidence: 99%

Design and Validation of qPCR-Specific Primers for Quantification of the Marketed Terfezia claveryi and Terfezia crassiverrucosa in Soil

Arenas

Morte

Navarro‐Ródenas

2022

JoF

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Desert truffle crop is a pioneer in southeastern Spain, a region where native edible hypogeous fungi are adapted to the semiarid areas with low annual rainfall. Terfezia claveryi Chatin was the first species of desert truffle to be cultivated, and has been increasing in recent years as an alternative rainfed crop in the Iberian Peninsula. However, its behaviour in the field has yet not been investigated. For this purpose, specific primers were designed for the soil DNA quantification of both T. claveryi and Terfezia crassiverrucosa and a real-time qPCR protocol was developed, using the ITS rDNA region as a target. Moreover, a young desert truffle orchard was sampled for environmental validation. The results showed the highest efficiency for the TerclaF3/TerclaR1 primers pair, 89%, and the minimal fungal biomass that could be reliable detected was set at 4.23 µg mycelium/g soil. The spatial distribution of fungal biomass was heterogeneous, and there was not a direct relationship between the quantity of winter soil mycelium and the location/productivity of desert truffles. This protocol could be applied to tracking these species in soil and understand their mycelial dynamics in plantations and wild areas.

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Section: Resultsmentioning

confidence: 99%

Design and Validation of qPCR-Specific Primers for Quantification of the Marketed Terfezia claveryi and Terfezia crassiverrucosa in Soil

Arenas

Morte

Navarro‐Ródenas

2022

JoF

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“…However, the opposite is the case. Whereas a northward migration is documented for the Périgord truffle (Büntgen et al, 2019 ), the summer truffle mycelia better resist hotter and particularly drier conditions (Piñuela et al, 2021 ) and seem to replace the Périgord truffle in wild sites on the Iberian Peninsula (Piñuela et al, 2021 ; Sánchez et al, 2016 ). The data presented here now suggest an additional dimension.…”

Section: Discussionmentioning

confidence: 99%

The fall of the summer truffle: Recurring hot, dry summers result in declining fruitbody production of Tuber aestivum in Central Europe

Steidinger

Büntgen

Stobbe³

et al. 2022

Global Change Biology

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Global warming is pushing populations outside their range of physiological tolerance.According to the environmental envelope framework, the most vulnerable populations occur near the climatic edge of their species' distributions. In contrast, populations from the climatic center of the species range should be relatively buffered against climate warming. We tested this latter prediction using a combination of linear mixed effects and machine learning algorithms on an extensive, citizen-scientist generated dataset on the fruitbody productivity of the Burgundy (aka summer) truffle (Tuber aestivum Vittad.), a keystone, ectomycorrhizal tree-symbiont occurring on a wide range of temperate climates. T. aestivum's fruitbody productivity was monitored at 3-week resolution over up to 8 continuous years at 20 sites distributed in the climatic center of its European distribution in southwest Germany and Switzerland. We found that T. aestivum fruitbody production is more sensitive to summer drought than would be expected from the breadth of its species' climatic niche. The monitored populations occurring nearly

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“…The main threats shown in truffle cultivation were the use of phytosanitary products, mainly herbicides, which could undermine the image of a natural organic product. Yet there are currently alternatives to herbicides, such as mulches, with very positive results for the development of the mycelium of T. melanosporum in young truffle orchards [27,[42][43][44]. The potential impact of pests and diseases affecting truffle plantations is perceived differently among countries, and it was considered an important threat for truffle cultivation only in Spain.…”

Section: Discussionmentioning

confidence: 99%

Truffle Market Evolution: An Application of the Delphi Method

Oliach

Vidale

Brenko

et al. 2021

Forests

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Background: The objective of this study was to analyze the current situation of the truffle sector in the main producing countries of the Mediterranean area. Additionally, we identified the challenges for the future and the priority actions to develop the truffle sector in the region. Methods: We used a Delphi process approach, and we selected a total of 17 expert panelists in different positions within the supply chain of the target countries (Spain, France, Italy, Croatia, and Greece). Results: The results obtained allowed us to have a complete description of the current truffle supply chain. We confirmed an evolution of the sector due to the cultivation success of several Tuber species. The maturity of the sector has produced shifts in the roles that form the traditional truffle supply chain operators. We confirmed the trend of a decrease of collectors that hunt truffles in the wild and sell to small travelling buyers, whilst truffle hunters that collect for farmers and specialty wholesalers are emerging. However, a trend of truffle price decrease in the last few years has alerted the sector. Conclusions: As production increases due to truffle cultivation, it will be necessary to promote truffle consumption. We identified actions to develop the truffle sector: (a) strengthen the link between truffles, tourism, and gastronomy; (b) increase the effort at European level for the recognition of truffle production, helping to develop truffle culture and marketing; (c) increase the awareness and consumption of truffles among consumers; and (d) develop tourism workshops for truffle farmers.

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White mulch and irrigation increase black truffle soil mycelium when competing with summer truffle in young truffle orchards

Cited by 14 publications

References 50 publications

Design and Validation of qPCR-Specific Primers for Quantification of the Marketed Terfezia claveryi and Terfezia crassiverrucosa in Soil

Design and Validation of qPCR-Specific Primers for Quantification of the Marketed Terfezia claveryi and Terfezia crassiverrucosa in Soil

The fall of the summer truffle: Recurring hot, dry summers result in declining fruitbody production of Tuber aestivum in Central Europe

Truffle Market Evolution: An Application of the Delphi Method

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