Soil spore bank in Tuber melanosporum: up to 42% of fruitbodies remain unremoved in managed truffle grounds

Laure Schneider-Maunoury , Elisa Taschen , Franck Richard , Marc-Andre Selosse

Abstract

Fungi fruiting hypogeously are believed to form spore banks in soil especially because some fruitbodies are not removed by animals. However, little is known on the proportion of fruitbodies that are not removed by animals. We took advantage of the brûlé phenomenon, which allows delineation of the mycelium distribution, to assess the proportion of unremoved black truffle (Tuber melanosporum) fruitbodies in the context of plantations where fruitbodies are actively sought and harvested by truffle growers. We inspected portions of the brûlés after the harvest season to find unremoved fruitbodies. On average, from six truffle grounds in which a total of 38 brûlés were investigated, unremoved fruitbodies represented 33% of the whole fruitbody production (42% when averaging all the brûlés). We discuss this value and its high variability among truffle grounds. Beyond the local and variable accidental reasons that may lead to this high proportion, we speculate that the formation of some undetectable fruitbodies may be under selection pressure, given the reproductive biology of T. melanosporum.
Author Laure Schneider-Maunoury
Laure Schneider-Maunoury,,
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, Elisa Taschen
Elisa Taschen,,
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, Franck Richard
Franck Richard,,
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, Marc-Andre Selosse (FB / DPTNC)
Marc-Andre Selosse,,
- Department of Plant Taxonomy and Nature Conservation
Journal seriesMycorrhiza, ISSN 0940-6360, e-ISSN 1432-1890, (N/A 100 pkt)
Issue year2019
Vol29
No6
Pages663-668
Publication size in sheets0.5
Keywords in EnglishAscomycetes life cycle, Brûlé, Mycorrhizae, spore dispersal
ASJC Classification2700 General Medicine; 1105 Ecology, Evolution, Behavior and Systematics; 1110 Plant Science; 1311 Genetics; 1312 Molecular Biology
DOIDOI:10.1007/s00572-019-00912-3
URL https://doi.org/10.1007/s00572-019-00912-3
Languageen angielski
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 03-03-2020, ArticleFromJournal
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.186; WoS Impact Factor: 2018 = 3.114 (2) - 2018=3.349 (5)
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