Fungal Diversity Revisited: 2.2 to 3.8 Million Species
Top Cited Papers
- 25 August 2017
- journal article
- research article
- Published by American Society for Microbiology in Microbiology Spectrum
- Vol. 5 (4), 79-95
- https://doi.org/10.1128/microbiolspec.funk-0052-2016
Abstract
The question of how many species of Fungi there are has occasioned much speculation, with figures mostly posited from around half a million to 10 million, and in one extreme case even a sizable portion of the spectacular number of 1 trillion. Here we examine new evidence from various sources to derive an updated estimate of global fungal diversity. The rates and patterns in the description of new species from the 1750s show no sign of approaching an asymptote and even accelerated in the 2010s after the advent of molecular approaches to species delimitation. Species recognition studies of (semi-)cryptic species hidden in morpho-species complexes suggest a weighted average ratio of about an order of magnitude for the number of species recognized after and before such studies. New evidence also comes from extrapolations of plant:fungus ratios, with information now being generated from environmental sequence studies, including comparisons of molecular and fieldwork data from the same sites. We further draw attention to undescribed species awaiting discovery in biodiversity hot spots in the tropics, little-explored habitats (such as lichen-inhabiting fungi), and material in collections awaiting study. We conclude that the commonly cited estimate of 1.5 million species is conservative and that the actual range is properly estimated at 2.2 to 3.8 million. With 120,000 currently accepted species, it appears that at best just 8%, and in the worst case scenario just 3%, are named so far. Improved estimates hinge particularly on reliable statistical and phylogenetic approaches to analyze the rapidly increasing amount of environmental sequence data.This publication has 112 references indexed in Scilit:
- Nuclear ribosomal internal transcribed spacer (ITS) region as a universal DNA barcode marker for FungiProceedings of the National Academy of Sciences of the United States of America, 2012
- DNA Damage in Plant Herbarium TissuePLOS ONE, 2011
- How Many Species Are There on Earth and in the Ocean?PLoS Biology, 2011
- Herbaria are a major frontier for species discoveryProceedings of the National Academy of Sciences of the United States of America, 2010
- The Sequence Read ArchiveNucleic Acids Research, 2010
- The European Nucleotide ArchiveNucleic Acids Research, 2010
- Search and clustering orders of magnitude faster than BLASTBioinformatics, 2010
- How many species of flowering plants are there?Proceedings. Biological sciences, 2010
- Fungal Diversity in Deep-Sea Hydrothermal EcosystemsApplied and Environmental Microbiology, 2009
- Multiple gene genealogies and phenotypic data reveal cryptic species of the Botryosphaeriaceae: A case study on the Neofusicoccum parvum/N. ribis complexMolecular Phylogenetics and Evolution, 2009