Self/nonself recognition in Tuber melanosporum is not mediated by a heterokaryon incompatibility system

Iotti, Mirco; Rubini, Andrea; Tisserant, Émilie; Kholer, Annegret; Paolocci, Francesco; Zambonelli, Alessandra

doi:10.1016/j.funbio.2011.11.009

Cited by 33 publications

(26 citation statements)

References 76 publications

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“…Similarly, the presence of haploid ectomycorrhizas as well as evidence of a spatial separation between ectomycorrhizas from different fungal strains were then observed on host plants from open-field conditions (Rubini et al 2011b;Murat et al 2013). It has been hypothesized that cell surface factors might act at the pre-fusion level to prevent the formation of anastomosis between strains and, consequently, to maintain the genetic integrity of each strain during vegetative growth (Paolocci et al 2006;Iotti et al 2012).…”

Section: T Melanosporum Is a Heterothallic Fungusmentioning

confidence: 91%

“…Vegetative incompatibility results in the formation of a barrier system through cell-surface or extracellular factors causing cell death resulting from plasmogamy between non-compatible fungal strains. Anastomoses have never been observed between hyphae of different T. melanosporum strains grown under controlled conditions, but have frequently been observed between hyphae of the same strain (Iotti et al 2012). Selosse et al (2013) made the hypothesis that vegetative incompatibility could explain the exclusion of one mating type by the other from the same host plant.…”

Section: Remaining Unanswered Questionsmentioning

confidence: 99%

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Certainties and uncertainties about the life cycle of the Périgord black truffle (Tuber melanosporum Vittad.)

Tacon

Rubini

Murat

et al. 2016

Annals of Forest Science

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Abstract• Key message Several aspects of the life cycle of the Périgord black truffle have been elucidated only recently, while others remain either controversial or unstudied. In this paper, we present a revised life cycle of this fungus and highlight key aspects that have yet to be addressed or require further understanding.• Context The hypogeous sporophores of several Tuber species, renowned for their aromatic and gustatory qualities, are widely commercialized. One of the most valuable species is Tuber melanosporum Vittad., the Périgord black truffle also known as "the black diamond". However, many aspects of T. melanosporum life cycle remain unsolved. • Aims In this work, we examine past and recent findings on the life cycle of T. melanosporum, currently regarded as a model system for Tuber species, with the view of highlighting aspects of its life cycle which remain unsolved.• Results Several aspects of its life cycle have recently been elucidated (i.e. characterization of two mating type genes, heterothallism, prevalence of sexual reproduction on vegetative propagation, exclusion of one mating type by its opposite on ectomycorrhizas, dependency of ascocarps on their host for carbon allocation), while others remain unaddressed.

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Section: T Melanosporum Is a Heterothallic Fungusmentioning

confidence: 91%

Section: Remaining Unanswered Questionsmentioning

confidence: 99%

Certainties and uncertainties about the life cycle of the Périgord black truffle (Tuber melanosporum Vittad.)

Tacon

Rubini

Murat

et al. 2016

Annals of Forest Science

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“…An example of such behavior is found in the ascomycete fungus Rossellinia necatrix , and it appears to be triggered by a single Mendelian factor . Although there is increasing evidence of similar behavior across fungi (Ford et al 1995;Giovannetti et al 2003;Micali and Smith 2003;Iotti et al 2012;Smith and Lafontaine 2013), there is only one example where a gene has been isolated. This example is the vic4 gene of the chestnut blight fungus Cryphonectria parasitica (Ascomycota).…”

Section: Stage Of Rejectionmentioning

confidence: 99%

Histocompatibility as Adaptive Response to Discriminatory Within-Organism Conflict: A Historical Model

Gilbert

2015

The American Naturalist

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org. Online enhancement: appendix.abstract: Multicellular tissue compatibility, or histocompatibility, restricts fusion to close kin. Histocompatibility depends on hypervariable cue genes, which often have more than 100 alleles in a population. To explain the evolution of histocompatibility, I here take a historical approach. I focus on the specific example of marine invertebrate histocompatibility. I use simple game-theoretical models to show that histocompatibility can evolve through five steps. These steps include the evolution of indiscriminate fusion, the evolution of discriminatory within-organism conflict, the evolution of minor histocompatibility, the evolution of major histocompatibility, and the evolution of major histocompatibility cue polymorphism. Allowing for gradual evolution reveals discriminatory within-organism conflict as a selective pressure for histocompatibility and associated cue polymorphism. Existing data from marine invertebrates and other organisms are consistent with this hypothesis.

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“…In the field intraspecific competition causes a spatial separation between mating types that can affect fruiting potential (Rubini et al, 2011b). Selosse et al (2013) hypothesised that the mating-type genes could also be controlling vegetative incompatibility, but Iotti et al (2012) did not find genes related to mating-type heterokaryon incompatibility in T. melanosporum.…”

Section: Basic Researchmentioning

confidence: 99%

Black truffle cultivation: a global reality

2014

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Aim of study: In recent decades the cultivation of the black truffle Tuber melanosporum has expanded across all the Mediterranean-climate regions, but also to other regions outside the European standard for the species. We aim to describe the current extent of T. melanosporum cultivation.Area of study: Tuber melanosporum plantations in Europe, the Mediterranean basin, Australia, New Zealand, China, America and South Africa.Material and Methods: The socioeconomic impact of T. melanosporum cultivation, the way in which the current situation has been achieved and the knowledge needed for its progress are reviewed.Research highlights: T. melanosporum has been successfully cultivated in several countries outside its natural area, but many practices are still empirical and thus yields cannot be guaranteed. The recent advances in molecular techniques and genome science are helping to overcome some of the difficulties traditionally constraining truffle research. The role of truffles as a transitional element between agricultural and forestry activities makes its cultivation a paradigm of sustainable rural development.Keywords: Tuber melanosporum; Europe; Australia; New Zealand; Chile; USA.

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Self/nonself recognition in Tuber melanosporum is not mediated by a heterokaryon incompatibility system

Cited by 33 publications

References 76 publications

Certainties and uncertainties about the life cycle of the Périgord black truffle (Tuber melanosporum Vittad.)

Certainties and uncertainties about the life cycle of the Périgord black truffle (Tuber melanosporum Vittad.)

Histocompatibility as Adaptive Response to Discriminatory Within-Organism Conflict: A Historical Model

Black truffle cultivation: a global reality

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