1
|
Daskalopoulos V, Polemis E, Kioupidi IE, Trigas P, Zervakis GI. Evaluation of the Colonization of Plants from Five Quercus Taxa Native to Greece by Tuber aestivum (Ascomycota, Pezizales). Life (Basel) 2024; 14:852. [PMID: 39063606 PMCID: PMC11277910 DOI: 10.3390/life14070852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 07/04/2024] [Accepted: 07/05/2024] [Indexed: 07/28/2024] Open
Abstract
Fungi of the genus Tuber are famous for their hypogeous ascomata (truffles), many of which possess noteworthy organoleptic properties. T. aestivum shows a wide geographic distribution, has many plant symbionts and is well adapted to various climatic conditions. In this study, five Quercus taxa native to Greece (i.e., Q. coccifera, Q. ilex, Q. ithaburensis subsp. macrolepis, Q. pubescens and Q. trojana subsp. trojana) were inoculated with spore suspensions obtained from a single ascoma of T. aestivum. The fungal colonization of oak roots was evaluated at three, seven and 12 months after inoculation; the respective colonization rates for each time period were as follows: low to medium (17-41%) for Q. pubescens, Q. ithaburensis subsp. macrolepis and Q. trojana subsp. trojana, medium to relatively high (58-80%) for Q. ithaburensis subsp. macrolepis, Q. ilex, Q. pubescens and Q. trojana subsp. trojana, and medium to high (45-87%) for all oak species examined. Positive correlations were assessed between the number of colonized root tips and the total root tips number, but no significant differences were detected between the inoculated plants and the respective control as regards plant growth. The ectomycorrhizae formed by T. aestivum with Q. ithaburensis subsp. macrolepis and Q. trojana subsp. trojana are described for the first time. The outcome of the study evidences the feasibility of generating the seedlings of various indigenous oak species (covering a large range of diverse habitats) successfully inoculated with autochthonous truffles to be readily used for cultivation purposes.
Collapse
Affiliation(s)
- Vassileios Daskalopoulos
- Laboratory of General and Agricultural Microbiology, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece; (V.D.); (I.-E.K.)
| | - Elias Polemis
- Laboratory of General and Agricultural Microbiology, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece; (V.D.); (I.-E.K.)
| | - Irini-Evangelia Kioupidi
- Laboratory of General and Agricultural Microbiology, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece; (V.D.); (I.-E.K.)
| | - Panayiotis Trigas
- Laboratory of Systematic Botany, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece;
| | - Georgios I. Zervakis
- Laboratory of General and Agricultural Microbiology, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece; (V.D.); (I.-E.K.)
| |
Collapse
|
2
|
Piñuela Y, Alday JG, Oliach D, Castaño C, Büntgen U, Egli S, Martínez Peña F, Dashevskaya S, Colinas C, Peter M, Bonet JA. Habitat is more important than climate for structuring soil fungal communities associated in truffle sites. Fungal Biol 2024; 128:1724-1734. [PMID: 38575246 DOI: 10.1016/j.funbio.2024.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 02/09/2024] [Accepted: 02/23/2024] [Indexed: 04/06/2024]
Abstract
The ectomycorrhizal fungi Tuber melanosporum Vittad. and Tuber aestivum Vittad. produce highly valuable truffles, but little is known about the soil fungal communities associated with these truffle species in places where they co-occur. Here, we compared soil fungal communities present in wild and planted truffle sites, in which T. melanosporum and T. aestivum coexist, in Mediterranean and temperate regions over three sampling seasons spanning from 2018 to 2019. We showed that soil fungal community composition and ectomycorrhizal species composition are driven by habitat type rather than climate regions. Also, we observed the influence of soil pH, organic matter content and C:N ratio structuring total and ectomycorrhizal fungal assemblages. Soil fungal communities in wild sites revealed more compositional variability than those of plantations. Greater soil fungal diversity was found in temperate compared to Mediterranean sites when considering all fungal guilds. Ectomycorrhizal diversity was significantly higher in wild sites compared to plantations. Greater mould abundance at wild sites than those on plantation was observed while tree species and seasonal effects were not significant predictors in fungal community structure. Our results suggested a strong influence of both ecosystem age and management on the fungal taxa composition in truffle habitats.
Collapse
Affiliation(s)
- Yasmin Piñuela
- Department of Agricultural and Forest Sciences and Engineering, University of Lleida, Lleida, 25198, Spain; Forest Science and Technology Centre of Catalonia (CTFC), Crta. Sant Llorenç de Morunys km 2, 25280, Solsona, Spain; Swiss Federal Research Institute WSL, Birmensdorf, Switzerland.
| | - Josu G Alday
- Department of Agricultural and Forest Sciences and Engineering, University of Lleida, Lleida, 25198, Spain; Joint Research Unit CTFC - AGROTECNIO-CERCA, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Daniel Oliach
- Forest Science and Technology Centre of Catalonia (CTFC), Crta. Sant Llorenç de Morunys km 2, 25280, Solsona, Spain
| | - Carles Castaño
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, Uppsala, SE-750 07, Sweden
| | - Ulf Büntgen
- Department of Geography, University of Cambridge, Cambridge, UK; Czech Globe Research Institute CAS and Masaryk University Brno, Brno, Czech Republic
| | - Simon Egli
- Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
| | - Fernando Martínez Peña
- Agrifood Research and Technology Centre of Aragon CITA, Montañana 930, E-50059, Zaragoza, Spain; European Mycological Institute EGTC-EMI, E-42003, Soria, Spain
| | - Svetlana Dashevskaya
- Department of Agricultural and Forest Sciences and Engineering, University of Lleida, Lleida, 25198, Spain
| | - Carlos Colinas
- Department of Agricultural and Forest Sciences and Engineering, University of Lleida, Lleida, 25198, Spain; Forest Science and Technology Centre of Catalonia (CTFC), Crta. Sant Llorenç de Morunys km 2, 25280, Solsona, Spain
| | - Martina Peter
- Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
| | - José Antonio Bonet
- Department of Agricultural and Forest Sciences and Engineering, University of Lleida, Lleida, 25198, Spain; Joint Research Unit CTFC - AGROTECNIO-CERCA, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain
| |
Collapse
|
3
|
Mleczko P, Hilszczańska D, Karpowicz F, Kozak M, Leonardi M, Rosa-Gruszecka A, Tereba A, Pacioni G. Tuber wenchuanense, a holarctic truffle with a wide range of host plants and description of its ectomycorrhiza with spruce. MYCORRHIZA 2023; 33:45-58. [PMID: 36637489 PMCID: PMC9938020 DOI: 10.1007/s00572-022-01097-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
Tuber wenchuanense ascomata (Ascomycota, Pezizales), a species originally described from Sichuan (China), were found in the Tatra Mountains in southern Poland. The purpose of this work was to (i) report and assess the first case of the holarctic natural distribution of a Tuber species, (ii) amend the original description of the species, (iii) summarize data on its host plants and (iv) describe its ectomycorrhiza. Specimens of Tuber wenchuanense from the Tatra Mountains were studied morphologically and molecularly. The ectomycorrhiza of this truffle with Picea abies was described for the first time. The distribution of T. wenchuanense, which is reconstructed based on sequences deposited in the publicly available nucleotide sequence databases, makes it the first holarctic Tuber species and the one with the northernmost habitat. In fact, its habitat is confined mainly to mountain coniferous forests and alpine and arctic tundra; although, according to known observations, the fruiting bodies of T. wenchuanense can be produced only under conifers. Based on the sequences of the internal transcribed spacer, this species appears to have low genetic variability over the entire distribution range. The phylogenetic tree showed that some of the unidentified phylotypes from the Rufum clade found by other researchers belong to T. wenchuanense. The ecological implications of these findings are discussed.
Collapse
Affiliation(s)
- Piotr Mleczko
- Institute of Botany, Faculty of Biology, Jagiellonian University, Gronostajowa 3, 30-387, Kraków, Poland
| | - Dorota Hilszczańska
- Department of Forest Ecology, Forest Research Institute, Sękocin Stary, Braci Leśnej 3, 05-090, Raszyn, Poland
| | - Filip Karpowicz
- Institute of Botany, Faculty of Biology, Jagiellonian University, Gronostajowa 3, 30-387, Kraków, Poland
| | | | - Marco Leonardi
- Department of Life, Health and Environmental Sciences, University of L'Aquila, 67100, L'Aquila, Italy
| | - Aleksandra Rosa-Gruszecka
- Department of Forest Ecology, Forest Research Institute, Sękocin Stary, Braci Leśnej 3, 05-090, Raszyn, Poland.
| | - Anna Tereba
- Department of Forest Ecology, Forest Research Institute, Sękocin Stary, Braci Leśnej 3, 05-090, Raszyn, Poland
| | - Giovanni Pacioni
- Department of Life, Health and Environmental Sciences, University of L'Aquila, 67100, L'Aquila, Italy
| |
Collapse
|
4
|
Soil Moisture and Black Truffle Production Variability in the Iberian Peninsula. FORESTS 2022. [DOI: 10.3390/f13060819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The relationship between modelled root zone soil moisture (SM) and black truffle production in the Iberian Peninsula was studied. Previous works have investigated the influence that precipitation exerts on truffle yield highlighting the importance of water for the growth of black truffle. However, SM had not been used until now due to the lack of suitable databases. The SM series from the LISFLOOD hydrological rainfall–runoff model was used in this study. Annual black truffle yield series from 175 locations in Spain was correlated with SM for the period 1991–2012. For this, different approaches were applied considering daily, weekly and monthly temporal scales. The same analysis was carried out using precipitation data to compare the behaviors of both variables related to truffle production variability. The results obtained show critical periods in terms of soil water content in summer (June–September) and during October–November months. Moreover, a clear delay between precipitation and SM influence on black truffle was observed. The results obtained in this study highlight the importance of SM for black truffle production, since this variable truly expresses the available water for this fungus, which completes its entire life cycle living below ground.
Collapse
|
5
|
Microbial communities of ascocarps and soils in a natural habitat of Tuber indicum. Arch Microbiol 2022; 204:189. [PMID: 35194691 DOI: 10.1007/s00203-022-02763-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/11/2022] [Accepted: 01/12/2022] [Indexed: 11/02/2022]
Abstract
Truffles are the fruiting bodies of hypogeous fungi in the genus Tuber. Some truffle species usually grow in an area devoid of vegetation, called brûlé, but limited knowledge is available on the microbial composition and structure of them. Here, we investigated the bacterial and fungal communities of Tuber indicum ascocarps and soils inside and outside a characteristic brûlé from a poplar plantation with no truffle production history in northeastern China using a high-throughput sequencing approach. A predominance of members of the bacterial phylum Proteobacteria was observed in all samples. Members of Bacillus were the main genera in the ascocarps, while members of Lysobacter and unidentified Acidobacteria were more abundant in the soil. In addition, members of Gibberella, Fusarium, and Absidia were the dominant fungi in the ascocarps, while members of Tuber were enriched in the ascocarps and soils inside the brûlé. Some mycorrhization helper bacteria (Rhizobium) and ectomycorrhiza-associated bacteria (Lysobacter) were detected, indicating their potential roles in the complex development of underground fruiting bodies and brûlé formation. These findings may contribute to the protection and cultivation of truffles.
Collapse
|
6
|
Abstract
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.
Collapse
|
7
|
Bach C, Beacco P, Cammaletti P, Babel-Chen Z, Levesque E, Todesco F, Cotton C, Robin B, Murat C. First production of Italian white truffle (Tuber magnatum Pico) ascocarps in an orchard outside its natural range distribution in France. MYCORRHIZA 2021; 31:383-388. [PMID: 33591428 DOI: 10.1007/s00572-020-01013-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 12/10/2020] [Indexed: 06/12/2023]
Abstract
Truffles are ectomycorrhizal species forming edible ascocarps. The Italian white truffle (Tuber magnatum Pico) is the most famous and expensive species harvested to date; it comes exclusively from natural habitats in European countries. The annual production of T. magnatum is generally insufficient to respond to the high demands making its cultivation a research hotspot. The first attempt to cultivate T. magnatum started in the 1970s without success; only recently have mycorrhized plants been successfully produced. The aims of this study were (1) to assess the persistence of T. magnatum in the soil of plantations realized with mycorrhized plants and (2) to characterize the first T. magnatum orchard that produced ascocarps outside the known natural geographic range of this species. In 2018, five orchards were sampled in France, and T. magnatum was investigated in the soil. We confirmed that T. magnatum survived in the soil 3 to 8 years after planting. The key finding of this study was the harvest of T. magnatum ascocarps in 2019 and 2020 from one orchard. The production of ascocarps started 4.5 years after planting, and the ascocarps were harvested under different trees and during two consecutive seasons. A detailed analysis of the productive orchards (i.e., soil features, soil water availability, cultivation techniques) is presented. These results demonstrate the feasibility of T. magnatum cultivation worldwide by planting mycorrhized plants. The cultivation of T. magnatum could therefore become a real opportunity for farmers and could respond to the high demand of this high-priced food.
Collapse
Affiliation(s)
- Cyrille Bach
- Université de Lorraine, INRAE, UMR Interactions Arbres/Microorganismes, Centre INRAE Grand Est Nancy, Champenoux, France
| | - Pauline Beacco
- Université de Lorraine, INRAE, UMR Interactions Arbres/Microorganismes, Centre INRAE Grand Est Nancy, Champenoux, France
| | - Pierre Cammaletti
- Robin pépinières EARL, 1 chemin de la pépinière, 05500, Saint Laurent du Cros, France
| | - Zhixiao Babel-Chen
- Université de Lorraine, INRAE, UMR Interactions Arbres/Microorganismes, Centre INRAE Grand Est Nancy, Champenoux, France
| | - Emilie Levesque
- Université de Lorraine, INRAE, UMR Interactions Arbres/Microorganismes, Centre INRAE Grand Est Nancy, Champenoux, France
| | - Flora Todesco
- Université de Lorraine, INRAE, UMR Interactions Arbres/Microorganismes, Centre INRAE Grand Est Nancy, Champenoux, France
- Wetruf SAS, 2, avenue de la Forêt de Haye, 54500, Vandoeuvre-les-Nancy, France
| | - Claire Cotton
- Robin pépinières EARL, 1 chemin de la pépinière, 05500, Saint Laurent du Cros, France
| | - Bruno Robin
- Robin pépinières EARL, 1 chemin de la pépinière, 05500, Saint Laurent du Cros, France
| | - Claude Murat
- Université de Lorraine, INRAE, UMR Interactions Arbres/Microorganismes, Centre INRAE Grand Est Nancy, Champenoux, France.
| |
Collapse
|
8
|
Marqués‐Gálvez JE, Miyauchi S, Paolocci F, Navarro‐Ródenas A, Arenas F, Pérez‐Gilabert M, Morin E, Auer L, Barry KW, Kuo A, Grigoriev IV, Martin FM, Kohler A, Morte A. Desert truffle genomes reveal their reproductive modes and new insights into plant-fungal interaction and ectendomycorrhizal lifestyle. THE NEW PHYTOLOGIST 2021; 229:2917-2932. [PMID: 33118170 PMCID: PMC7898904 DOI: 10.1111/nph.17044] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 10/09/2020] [Indexed: 06/11/2023]
Abstract
Desert truffles are edible hypogeous fungi forming ectendomycorrhizal symbiosis with plants of Cistaceae family. Knowledge about the reproductive modes of these fungi and the molecular mechanisms driving the ectendomycorrhizal interaction is lacking. Genomes of the highly appreciated edible desert truffles Terfezia claveryi Chatin and Tirmania nivea Trappe have been sequenced and compared with other Pezizomycetes. Transcriptomes of T. claveryi × Helianthemum almeriense mycorrhiza from well-watered and drought-stressed plants, when intracellular colonizations is promoted, were investigated. We have identified the fungal genes related to sexual reproduction in desert truffles and desert-truffles-specific genomic and secretomic features with respect to other Pezizomycetes, such as the expansion of a large set of gene families with unknown Pfam domains and a number of species or desert-truffle-specific small secreted proteins differentially regulated in symbiosis. A core set of plant genes, including carbohydrate, lipid-metabolism, and defence-related genes, differentially expressed in mycorrhiza under both conditions was found. Our results highlight the singularities of desert truffles with respect to other mycorrhizal fungi while providing a first glimpse on plant and fungal determinants involved in ecto to endo symbiotic switch that occurs in desert truffle under dry conditions.
Collapse
Affiliation(s)
- José Eduardo Marqués‐Gálvez
- Departamento de Biología Vegetal (Botánica)Facultad de BiologíaUniversidad de MurciaCampus de EspinardoMurcia30100Spain
- INRAEUMR 1136Interactions Arbres/Microorganismes (IAM)Centre INRAE GrandEst ‐ NancyUniversité de LorraineChampenoux54280France
| | - Shingo Miyauchi
- INRAEUMR 1136Interactions Arbres/Microorganismes (IAM)Centre INRAE GrandEst ‐ NancyUniversité de LorraineChampenoux54280France
| | - Francesco Paolocci
- CNR‐IBBRIstituto di Bioscienze e BiorisorseUOS di PerugiaPerugia06128Italy
| | - Alfonso Navarro‐Ródenas
- Departamento de Biología Vegetal (Botánica)Facultad de BiologíaUniversidad de MurciaCampus de EspinardoMurcia30100Spain
| | - Francisco Arenas
- Departamento de Biología Vegetal (Botánica)Facultad de BiologíaUniversidad de MurciaCampus de EspinardoMurcia30100Spain
| | - Manuela Pérez‐Gilabert
- Departamento de Bioquímica y Biología Molecular‐AUniversidad de MurciaCampus de EspinardoMurcia30100Spain
| | - Emmanuelle Morin
- INRAEUMR 1136Interactions Arbres/Microorganismes (IAM)Centre INRAE GrandEst ‐ NancyUniversité de LorraineChampenoux54280France
| | - Lucas Auer
- INRAEUMR 1136Interactions Arbres/Microorganismes (IAM)Centre INRAE GrandEst ‐ NancyUniversité de LorraineChampenoux54280France
| | - Kerrie W. Barry
- US Department of Energy Joint Genome InstituteLawrence Berkeley National LaboratoryBerkeleyCA94598USA
| | - Alan Kuo
- US Department of Energy Joint Genome InstituteLawrence Berkeley National LaboratoryBerkeleyCA94598USA
| | - Igor V. Grigoriev
- US Department of Energy Joint Genome InstituteLawrence Berkeley National LaboratoryBerkeleyCA94598USA
- Department of Plant and Microbial BiologyUniversity of California, BerkeleyBerkeleyCA94598USA
| | - Francis M. Martin
- INRAEUMR 1136Interactions Arbres/Microorganismes (IAM)Centre INRAE GrandEst ‐ NancyUniversité de LorraineChampenoux54280France
| | - Annegret Kohler
- INRAEUMR 1136Interactions Arbres/Microorganismes (IAM)Centre INRAE GrandEst ‐ NancyUniversité de LorraineChampenoux54280France
| | - Asunción Morte
- Departamento de Biología Vegetal (Botánica)Facultad de BiologíaUniversidad de MurciaCampus de EspinardoMurcia30100Spain
| |
Collapse
|
9
|
Guerin-Laguette A. Successes and challenges in the sustainable cultivation of edible mycorrhizal fungi – furthering the dream. MYCOSCIENCE 2021; 62:10-28. [PMID: 37090021 PMCID: PMC9157773 DOI: 10.47371/mycosci.2020.11.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 09/19/2020] [Accepted: 11/09/2020] [Indexed: 01/08/2023]
Abstract
The cultivation of edible mycorrhizal fungi (EMF) has made great progress since the first cultivation of Tuber melanosporum in 1977 but remains in its infancy. Five cultivation steps are required: (1) mycorrhizal synthesis, (2) mycorrhiza development and acclimation, (3) out-planting of mycorrhizal seedlings, (4) onset of fructification, and (5) performing tree orchards. We provide examples of successes and challenges associated with each step, including fruiting of the prestigious chanterelles in Japan recently. We highlight the challenges in establishing performing tree orchards. We report on the monitoring of two orchards established between Lactarius deliciosus (saffron milk cap) and pines in New Zealand. Saffron milk caps yields reached 0.4 and 1100 kg/ha under Pinus radiata and P. sylvestris 6 and 9 y after planting, respectively. Canopy closure began under P. radiata 7 y after planting, followed by a drastic reduction of yields, while P. sylvestris yields still hovered at 690 to 780 kg/ha after 11 y, without canopy closure. The establishment of full-scale field trials to predict yields is crucial to making the cultivation of EMF a reality in tomorrow's cropping landscape. Sustainable EMF cultivation utilizing trees in non-forested land could contribute to carbon storage, while providing revenue and other ecosystem services.
Collapse
Affiliation(s)
- Alexis Guerin-Laguette
- Microbial Systems for Plant Protection, The New Zealand Institute for Plant & Food Research Limited
| |
Collapse
|
10
|
Liu D, Herrera M, Yu F, Pèrez-Moreno J. Provenances originate morphological and microbiome variation of Tuber pseudobrumale in southwestern China despite strong genetic consistency. Mycol Prog 2020. [DOI: 10.1007/s11557-020-01645-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
11
|
Čejka T, Trnka M, Krusic PJ, Stobbe U, Oliach D, Václavík T, Tegel W, Büntgen U. Predicted climate change will increase the truffle cultivation potential in central Europe. Sci Rep 2020; 10:21281. [PMID: 33277535 PMCID: PMC7719165 DOI: 10.1038/s41598-020-76177-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 10/13/2020] [Indexed: 11/18/2022] Open
Abstract
Climate change affects the distribution of many species, including Burgundy and Périgord truffles in central and southern Europe, respectively. The cultivation potential of these high-prized cash crops under future warming, however, remains highly uncertain. Here we perform a literature review to define the ecological requirements for the growth of both truffle species. This information is used to develop niche models, and to estimate their cultivation potential in the Czech Republic under current (2020) and future (2050) climate conditions. The Burgundy truffle is already highly suitable for cultivation on ~ 14% of agricultural land in the Czech Republic (8486 km2), whereas only ~ 8% of the warmest part of southern Moravia are currently characterised by a low suitability for Périgord truffles (6418 km2). Though rising temperatures under RCP8.5 will reduce the highly suitable cultivation areas by 7%, the 250 km2 (3%) expansion under low-emission scenarios will stimulate Burgundy truffles to benefit from future warming. Doubling the moderate and expanding the highly suitable land by 352 km2 in 2050, the overall cultivation potential for Périgord truffles will rise substantially. Our findings suggest that Burgundy and Périgord truffles could become important high-value crops for many regions in central Europe with alkaline soils. Although associated with uncertainty, long-term investments in truffle cultivation could generate a wide range of ecological and economic benefits.
Collapse
Affiliation(s)
- Tomáš Čejka
- Department of Climate Change Impacts On Agroecosystems, Global Change Research Institute of the Czech Academy of Sciences, Bělidla 986/4, 603 00, Brno, Czech Republic. .,Department of Geography, Faculty of Science, Masaryk University, Kotlářská 2, 602 00, Brno, Czech Republic.
| | - Miroslav Trnka
- Department of Climate Change Impacts On Agroecosystems, Global Change Research Institute of the Czech Academy of Sciences, Bělidla 986/4, 603 00, Brno, Czech Republic.,Department of Agrosystems and Bioclimatology, Faculty of AgriSciences, Mendel University, Zemědělská 1, 613 00, Brno, Czech Republic
| | - Paul J Krusic
- Department of Geography, University of Cambridge, Downing Place, Cambridge, CB2 3EN, UK.,Department of Physical Geography, Stockholm University, 106 91, Stockholm, Sweden
| | - Ulrich Stobbe
- Deutsche Trüffelbäume, Karl-Bücheler Strasse 1, 78315, Radolfzell, Germany
| | - Daniel Oliach
- Forest Science and Technology Centre of Catalonia (CTFC), Crta. Sant Llorenç de Morunys km 2, 25280, Solsona, Spain.,Department of Crop and Forest Science, University of Lleida, Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | - Tomáš Václavík
- Department of Climate Change Impacts On Agroecosystems, Global Change Research Institute of the Czech Academy of Sciences, Bělidla 986/4, 603 00, Brno, Czech Republic.,Department of Ecology and Environmental Sciences, Palacký University, Šlechtitelů 27, 78371, Olomouc, Czech Republic
| | - Willy Tegel
- Institute of Forest Sciences, Chair of Forest Growth and Dendroecology, University of Freiburg, Tennenbacher Straße 4, 79106, Freiburg, Germany
| | - Ulf Büntgen
- Department of Climate Change Impacts On Agroecosystems, Global Change Research Institute of the Czech Academy of Sciences, Bělidla 986/4, 603 00, Brno, Czech Republic.,Department of Geography, Faculty of Science, Masaryk University, Kotlářská 2, 602 00, Brno, Czech Republic.,Department of Geography, University of Cambridge, Downing Place, Cambridge, CB2 3EN, UK.,Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, 8903, Birmensdorf, Switzerland
| |
Collapse
|
12
|
Lee H, Nam K, Zahra Z, Farooqi MQU. Potentials of truffles in nutritional and medicinal applications: a review. Fungal Biol Biotechnol 2020; 7:9. [PMID: 32566240 PMCID: PMC7301458 DOI: 10.1186/s40694-020-00097-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 05/19/2020] [Indexed: 12/21/2022] Open
Abstract
Truffles, the symbiotic hypogeous edible fungi, have been worldwide regarded as a great delicacy because of their unique flavor and high nutritional value. By identifying their bioactive components such as phenolics, terpenoids, polysaccharides, anandamide, fatty acids, and ergosterols, researchers have paid attention to their biological activities including antitumor, antioxidant, antibacterial, anti-inflammatory, and hepatoprotective activities. In addition, numerous factors have been investigating that can affect the quality and productivity of truffles to overcome their difficulty in culturing and preserving. To provide the information for their potential applications in medicine as well as in functional food, this review summarizes the relevant literature about the biochemical composition, aromatic and nutritional benefits, and biological properties of truffles. Besides, various factors affecting their productivity and quality as well as the preservation methods are also highlighted.
Collapse
Affiliation(s)
- Heayyean Lee
- College of Pharmacy, Chung-Ang University, Seoul, 06974 Republic of Korea.,Plamica Labs, Batten Hall, 125 Western Ave, Allston, 02163 MA USA
| | - Kyungmin Nam
- Plamica Labs, Batten Hall, 125 Western Ave, Allston, 02163 MA USA
| | - Zahra Zahra
- College of Pharmacy, Chung-Ang University, Seoul, 06974 Republic of Korea.,Department of Civil & Environmental Engineering, University of California, Irvine, CA 92697 USA
| | | |
Collapse
|
13
|
Khalifa SA, Farag MA, Yosri N, Sabir JS, Saeed A, Al-Mousawi SM, Taha W, Musharraf SG, Patel S, El-Seedi HR. Truffles: From Islamic culture to chemistry, pharmacology, and food trends in recent times. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.07.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
14
|
Thomas P, Büntgen U. A risk assessment of Europe's black truffle sector under predicted climate change. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 655:27-34. [PMID: 30469066 DOI: 10.1016/j.scitotenv.2018.11.252] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 11/16/2018] [Accepted: 11/17/2018] [Indexed: 06/09/2023]
Abstract
The black truffle (Tuber melanosporum) is a highly revered culinary icon species that grows symbiotically with its host trees across several parts of southern Europe. Where harvested under natural or cultivated conditions, truffles can have a significant socioeconomic impact and may even form a key component of cultural identity. Although some aspects of truffle biology and ecology have been elucidated recently, the role of abiotic, environmental and climatic factors in the production and maturation of their fruitbodies is still largely unknown. Based on 36-year-long, continuous records of Mediterranean truffle yield, we demonstrate that decreased summer precipitation together with increased summer temperatures significantly reduce the fungus' subsequent winter harvest. Using state-of-the-art climate model projections, we predict that a significant decline of 78-100% in southern European truffle production is likely to occur between 2071 and 2100. The additional threats of forecasted heatwaves, forest fires, pest and disease outbreaks are discussed along with socioeconomic and ecological consequences of a warmer and dryer future climate. Our results emphasize the need for unravelling the direct and indirect effects of climate change on Europe's truffle sector and underline the importance of conservation initiatives at local to international scales.
Collapse
Affiliation(s)
- Paul Thomas
- University of Stirling, Stirling FK9 4LA, UK; Mycorrhizal Systems Ltd, Lancashire PR25 2SD, UK.
| | - Ulf Büntgen
- Department of Geography, University of Cambridge, Cambridge CB2 3EN, UK; Swiss Federal Research Institute WSL, 8903 Birmensdorf, Switzerland; Global Change Research Centre (CzechGlobe), 603 00 Brno, Czech Republic; Department of Geography, Faculty of Science, Masaryk University, 613 00 Brno, Czech Republic
| |
Collapse
|
15
|
Baragatti M, Grollemund PM, Montpied P, Dupouey JL, Gravier J, Murat C, Le Tacon F. Influence of annual climatic variations, climate changes, and sociological factors on the production of the Périgord black truffle (Tuber melanosporum Vittad.) from 1903-1904 to 1988-1989 in the Vaucluse (France). MYCORRHIZA 2019; 29:113-125. [PMID: 30603794 DOI: 10.1007/s00572-018-0877-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 12/04/2018] [Indexed: 06/09/2023]
Abstract
From 1903-1904 to 1988-1989, the two World Wars and sociological factors as rural desertification and changes in land uses mainly explained the decline of black truffle production in the Vaucluse department, which well reflects that of the whole of France. These can be correlated with the annual climatic variations as well as, from 1924-1925 to 1948-1949, the raw production rates of the managed truffle orchard of Pernes-les-Fontaines located in Vaucluse. The two methods used (correlation coefficients and Bayesian functional linear regression with Sparse Step functions) gave consistent results: the main factor explaining the annual variations of truffle production was the summer climatic water deficit of the year n. A general model including the rural exodus and the cumulated climatic water deficit of summer months both allowed to well explain the evolution of truffle production from 1903-1904 to 1988-1989 in the Vaucluse and its huge decrease. During that period, global warming had little effect. However, in the twenty-first century, all the scenarios predict increased summer water stress for the Mediterranean region, which could greatly affect black truffle production.
Collapse
Affiliation(s)
- Meili Baragatti
- UMR 729, MISTEA, INRA, Montpellier SupAgro, Place Pierre Viala, 34060, Montpellier, France
| | - Paul-Marie Grollemund
- UMR 729, MISTEA, INRA, Montpellier SupAgro, Place Pierre Viala, 34060, Montpellier, France
- UMR 5149, IMAG, Université de Montpellier, CNRS, Place E. Bataillon, 34095, Montpellier, France
| | - Pierre Montpied
- Université de Lorraine, AgroParisTech, Inra SILVA, 54000, Nancy, France
| | - Jean-Luc Dupouey
- Université de Lorraine, AgroParisTech, Inra SILVA, 54000, Nancy, France
| | | | - Claude Murat
- Université de Lorraine, Inra, IAM, 54000, Nancy, France
| | | |
Collapse
|
16
|
Abstract
Fungi are some of the most diverse organisms on earth and since prehistoric times have played an important role in human society. In recent years they have become a strategic asset not only in the conservation and management of ecosystems but also as a resource for halting the exodus from rural areas in peripheral Mediterranean regions, such as inland eastern Spain. In view of this important ecological and socioeconomic role, in this paper we present a geographical analysis of edible fungi, paying particular attention to the Spanish case. To this end we carried out a bibliographic review of the climatic factors affecting the fruiting of these fungi and the socioeconomic aspects of their commercial exploitation. We also performed an online search for mycotourism-related activities and explored the statistical data on the cultivation of edible mushrooms and its economic impact. Our main findings include a synthesis of the international research on the effects of climatic variability on the natural production of macrofungi, and an assessment of the economic viability and the social importance of mushrooms in Spain, in particular in relation to the current and future potential of mushroom cultivation and the multifunctional management and use of forests.
Collapse
|
17
|
Baragatti M, Bertin K, Lebarbier E, Meza C. A Bayesian approach for the segmentation of series with a functional effect. STAT MODEL 2018. [DOI: 10.1177/1471082x18755539] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract: In some application fields, series are affected by two different types of effects: abrupt changes (or change-points) and functional effects. We propose here a Bayesian approach that allows us to estimate these two parts. Here, the underlying piecewise-constant part (associated to the abrupt changes) is expressed as the product of a lower triangular matrix by a sparse vector and the functional part as a linear combination of functions from a large dictionary where we want to select the relevant ones. This problem can thus lead to a global sparse estimation and a stochastic search variable selection approach is used to this end. The performance of our proposed method is assessed using simulation experiments. Applications to three real datasets from geodesy, agronomy and economy fields are also presented.
Collapse
Affiliation(s)
- Meili Baragatti
- MISTEA, Montpellier SupAgro, INRA, CNRS, Univ Montpellier, Montpellier, France
| | - Karine Bertin
- CIMFAV-Facultad de Ingeniería, Universidad de Valparaíso, Valparaíso, Chile
| | | | - Cristian Meza
- CIMFAV-Facultad de Ingeniería, Universidad de Valparaíso, Valparaíso, Chile
| |
Collapse
|
18
|
Leonardi P, Iotti M, Donati Zeppa S, Lancellotti E, Amicucci A, Zambonelli A. Morphological and functional changes in mycelium and mycorrhizas of Tuber borchii due to heat stress. FUNGAL ECOL 2017. [DOI: 10.1016/j.funeco.2017.05.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
19
|
Molinier V, Murat C, Peter M, Gollotte A, De la Varga H, Meier B, Egli S, Belfiori B, Paolocci F, Wipf D. SSR-based identification of genetic groups within European populations of Tuber aestivum Vittad. MYCORRHIZA 2016; 26:99-110. [PMID: 26070448 DOI: 10.1007/s00572-015-0649-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Accepted: 05/28/2015] [Indexed: 06/04/2023]
Abstract
Tuber species are ectomycorrhizal ascomycetes establishing relationships with different host trees and forming hypogeous fruiting bodies known as truffles. Among Tuber species, Tuber aestivum Vittad. has a wide distributional range being found naturally all over Europe. Here, we performed large-scale population genetic analyses in T. aestivum to (i) investigate its genetic diversity at the European scale, (ii) characterize its genetic structure and test for the presence of ecotypes and (iii) shed light into its demographic history. To reach these goals, 230 ascocarps from different populations were genotyped using 15 polymorphic simple sequence repeat markers. We identified 181 multilocus genotypes and four genetic groups which did not show a clear geographical separation; although, one of them was present exclusively in Southeast France, Italy and Spain. Fixation index values between pairs of genetic groups were generally high and ranged from 0.29 to 0.45. A significant deficit of heterozygosity indicated a population expansion instead of a recent population bottleneck, suggesting that T. aestivum is not endangered in Europe, not even in Mediterranean regions. Our study based on a large-scale population genetic analysis suggests that genetically distinct populations and likely ecotypes within T. aestivum are present. In turn, this study paves the way to future investigations aimed at addressing the biological and/or ecological factors that have concurred in shaping the population genetic structure of this species. Present results should also have implications for the truffle market since defining genetic markers are now possible at least for some specific T. aestivum genetic groups.
Collapse
Affiliation(s)
- Virginie Molinier
- Swiss Federal Institute for Forest Snow and Landscape Research (WSL), 8903, Birmensdorf, Switzerland.
- UMR Agroécologie INRA, Agrosup, u. Bourgogne, Pôle Interactions Plantes Microorganismes ERL 6300 CNRS, BP 86510, Université de Bourgogne, 21065 Cedex, Dijon, France.
| | - Claude Murat
- UMR1136 Interactions Arbres-Microorganismes, Université de Lorraine, F-54500, Vandoeuvre-lès-Nancy, France
- INRA, UMR1136 Interactions Arbres-Microorganismes, F-54280, Champenoux, France
| | - Martina Peter
- Swiss Federal Institute for Forest Snow and Landscape Research (WSL), 8903, Birmensdorf, Switzerland
| | | | - Herminia De la Varga
- UMR1136 Interactions Arbres-Microorganismes, Université de Lorraine, F-54500, Vandoeuvre-lès-Nancy, France
- INRA, UMR1136 Interactions Arbres-Microorganismes, F-54280, Champenoux, France
| | - Barbara Meier
- Swiss Federal Institute for Forest Snow and Landscape Research (WSL), 8903, Birmensdorf, Switzerland
| | - Simon Egli
- Swiss Federal Institute for Forest Snow and Landscape Research (WSL), 8903, Birmensdorf, Switzerland
| | - Beatrice Belfiori
- National Research Council, Institute of Biosciences and BioResources-Perugia (CNR-IBBR), 06128, Perugia, Italy
| | - Francesco Paolocci
- National Research Council, Institute of Biosciences and BioResources-Perugia (CNR-IBBR), 06128, Perugia, Italy
| | - Daniel Wipf
- UMR Agroécologie INRA, Agrosup, u. Bourgogne, Pôle Interactions Plantes Microorganismes ERL 6300 CNRS, BP 86510, Université de Bourgogne, 21065 Cedex, Dijon, France
| |
Collapse
|
20
|
Chen J, Murat C, Oviatt P, Wang Y, Le Tacon F. The Black Truffles Tuber melanosporum and Tuber indicum. SOIL BIOLOGY 2016. [DOI: 10.1007/978-3-319-31436-5_2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
|
21
|
Ágreda T, Águeda B, Olano JM, Vicente-Serrano SM, Fernández-Toirán M. Increased evapotranspiration demand in a Mediterranean climate might cause a decline in fungal yields under global warming. GLOBAL CHANGE BIOLOGY 2015; 21:3499-3510. [PMID: 25930066 DOI: 10.1111/gcb.12960] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 04/10/2015] [Indexed: 06/04/2023]
Abstract
Wild fungi play a critical role in forest ecosystems, and its recollection is a relevant economic activity. Understanding fungal response to climate is necessary in order to predict future fungal production in Mediterranean forests under climate change scenarios. We used a 15-year data set to model the relationship between climate and epigeous fungal abundance and productivity, for mycorrhizal and saprotrophic guilds in a Mediterranean pine forest. The obtained models were used to predict fungal productivity for the 2021-2080 period by means of regional climate change models. Simple models based on early spring temperature and summer-autumn rainfall could provide accurate estimates for fungal abundance and productivity. Models including rainfall and climatic water balance showed similar results and explanatory power for the analyzed 15-year period. However, their predictions for the 2021-2080 period diverged. Rainfall-based models predicted a maintenance of fungal yield, whereas water balance-based models predicted a steady decrease of fungal productivity under a global warming scenario. Under Mediterranean conditions fungi responded to weather conditions in two distinct periods: early spring and late summer-autumn, suggesting a bimodal pattern of growth. Saprotrophic and mycorrhizal fungi showed differences in the climatic control. Increased atmospheric evaporative demand due to global warming might lead to a drop in fungal yields during the 21st century.
Collapse
Affiliation(s)
- Teresa Ágreda
- Genius Medioambiente, C/.Campaneros 26, 42200 Almazán, Soria, Spain
- Área de Botánica, Departamento de Ciencias Agroforestales, EU de Ingenierías Agrarias, Universidad de Valladolid, Campus Duques de Soria, 42004, Soria, Spain
| | - Beatriz Águeda
- Área de Botánica, Departamento de Ciencias Agroforestales, EU de Ingenierías Agrarias, Universidad de Valladolid, Campus Duques de Soria, 42004, Soria, Spain
| | - José M Olano
- Área de Botánica, Departamento de Ciencias Agroforestales, EU de Ingenierías Agrarias, Universidad de Valladolid, Campus Duques de Soria, 42004, Soria, Spain
- Sustainable Forest Management Research Institute, Universidad de Valladolid and INIA, Avda. de Madrid 44, 34004, Palencia, Spain
| | - Sergio M Vicente-Serrano
- Instituto Pirenaico de Ecología, Consejo Superior de Investigaciones Científicas (IPE-CSIC), Avda. Montañana 1005, 50059, Zaragoza, Spain
| | - Marina Fernández-Toirán
- Departamento de Producción Vegetal y Recursos Forestales, EU de Ingenierías Agrarias, Universidad de Valladolid, Campus Duques de Soria, 42004, Soria, Spain
| |
Collapse
|
22
|
Molinier V, Murat C, Frochot H, Wipf D, Splivallo R. Fine-scale spatial genetic structure analysis of the black truffle T
uber aestivum
and its link to aroma variability. Environ Microbiol 2015; 17:3039-50. [DOI: 10.1111/1462-2920.12910] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 03/18/2015] [Accepted: 03/28/2015] [Indexed: 11/28/2022]
Affiliation(s)
- Virginie Molinier
- Swiss Federal Institute for Forest Snow and Landscape Research (WSL); Birmensdorf Switzerland
- UMR Agroécologie INRA/Agrosup/u. Bourgogne; Université de Bourgogne; Dijon Cedex France
| | - Claude Murat
- UMR1136 Interactions Arbres-Microorganismes; Université de Lorraine; Vandoeuvre-lès-Nancy France
- UMR1136 Interactions Arbres-Microorganismes; INRA; Champenoux France
| | | | - Daniel Wipf
- UMR Agroécologie INRA/Agrosup/u. Bourgogne; Université de Bourgogne; Dijon Cedex France
| | - Richard Splivallo
- Institute for Molecular Biosciences; Goethe University Frankfurt; Frankfurt am Main Germany
- Integrative Fungal Research Cluster (IPF); Frankfurt am Main Germany
| |
Collapse
|
23
|
Bradai L, Bissati S, Chenchouni H, Amrani K. Effects of climate on the productivity of desert truffles beneath hyper-arid conditions. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2015; 59:907-915. [PMID: 25164975 DOI: 10.1007/s00484-014-0891-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 07/14/2014] [Accepted: 08/14/2014] [Indexed: 06/03/2023]
Abstract
Desert truffles are edible hypogenous fungi that are very well adapted to conditions of aridity in arid and semi-arid regions. This study aims to highlight the influence of climatic factors on the productivity of desert truffles under hyper-arid climatic conditions of the Sahara Desert in Algeria, with assumptions that the more varying climatic factors, mainly rainfall, are more crucial for the development and production of desert truffles. At seven separate sites, desert truffles were collected by systematic sampling between 2006 and 2012. The effects of climate parameters of each site on the productivities (g/ha/year) of desert truffle species were tested using generalized linear models (GLMs). The annual mean of the total production recorded for all three harvested species (Terfezia arenaria, Terfezia claveryi, and Tirmania nivea) was 785.43 ± 743.39 g/ha. Tirmania nivea was commonly present over the sampled sites with an occurrence of 70 ± 10.1%. GLMs revealed that total and specific productivities were closely positively related to autumnal precipitations occurring during October-December, which is the critical pre-breeding period for both desert truffles and host plant species. The other climatic parameters have statistically no effect on the annual variation of desert truffle productivity.
Collapse
Affiliation(s)
- Lyès Bradai
- Lab. Bio-ressources Sahariennes: Préservation et Valorisation, Fac. des sciences de la nature et de la vie, Univ Ouargla, Ouargla, 30000, Algeria
| | | | | | | |
Collapse
|
24
|
Murat C. Forty years of inoculating seedlings with truffle fungi: past and future perspectives. MYCORRHIZA 2015; 25:77-81. [PMID: 24989673 DOI: 10.1007/s00572-014-0593-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Accepted: 06/24/2014] [Indexed: 06/03/2023]
Abstract
The first commercialization of seedlings inoculated with truffle fungi occurred in 1973. Over the last 40 years, considerable progress has been made relative to quality control for inoculated seedlings. A recently published paper by Andrés-Alpuente and colleagues (Mycorrhiza 24:29-37, 2014) reviewed and tested the different methods of mycorrhization assessment currently used in Europe. The aim of this paper is to augment their findings by adding information to the discussion about the most important steps in seedling quality control. Additionally, the history of seedlings inoculated with truffles, procedures currently used in France for seedling control quality, and a reflection on future research aimed at increasing truffle production will be presented.
Collapse
Affiliation(s)
- Claude Murat
- UMR1136 INRA, Interactions Arbres/Micro-organismes, Laboratory of Excellence ARBRE, INRA Nancy, Université de Lorraine, 54280, Champenoux, France,
| |
Collapse
|
25
|
Iotti M, Leonardi M, Lancellotti E, Salerni E, Oddis M, Leonardi P, Perini C, Pacioni G, Zambonelli A. Spatio-temporal dynamic of Tuber magnatum mycelium in natural truffle grounds. PLoS One 2014; 9:e115921. [PMID: 25535741 PMCID: PMC4275250 DOI: 10.1371/journal.pone.0115921] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 11/30/2014] [Indexed: 12/02/2022] Open
Abstract
Tuber magnatum produces the world's most expensive truffle. This fungus produces very rare ectomycorrhizas which are difficult or even impossible to detect in the field. A “real-time” PCR assay was recently developed to quantify and to track T. magnatum mycelium in soil. Here, this technique was used to investigate the spatial distribution of T. magnatum extra-radical mycelium in soil productive patches and its dynamic across seasons. This study was carried out in four different natural T. magnatum truffle grounds located in different Italian regions. During the fruiting seasons, the amount of T. magnatum mycelium was significantly higher around the fruiting points and decreased going farther away from them. Moreover, T. magnatum mycelium inside the productive patches underwent seasonal fluctuations. In early spring, the amount of T. magnatum mycelium was significantly higher than in summer. In summer, probably due to the hot and dry season, T. magnatum mycelium significantly decreased, whereas in autumn it increased again and was concentrated at the putative fruiting points. These results give new insights on T. magnatum ecology and are useful to plan the most appropriate sampling strategy for evaluating the management of a truffle ground.
Collapse
Affiliation(s)
- Mirco Iotti
- Department of Agricultural Sciences, Bologna University, Bologna, Italy
| | - Marco Leonardi
- Department of Life, Health and Environmental Sciences, L'Aquila University, L'Aquila, Italy
| | | | - Elena Salerni
- Department of Life Science, Siena University, Siena, Italy
| | - Marilena Oddis
- Department of Life, Health and Environmental Sciences, L'Aquila University, L'Aquila, Italy
| | - Pamela Leonardi
- Department of Agricultural Sciences, Bologna University, Bologna, Italy
| | - Claudia Perini
- Department of Life Science, Siena University, Siena, Italy
| | - Giovanni Pacioni
- Department of Life, Health and Environmental Sciences, L'Aquila University, L'Aquila, Italy
| | | |
Collapse
|