La Mérule pleureuse ou le Mérule pleureur est une espèce de champignons basidiomycètes de la famille des Serpulaceae. Il s'agit d'une espèce saproxylophage productrice d'enzymes qui dissolvent les constituants du bois et lui font perdre toute résistance mécanique. Son épithète spécifique, lacrymans ou « pleureuse », vient des larmes colorées qu'exsude son mycélium. C'est le champignon du bois le plus souvent en cause lors d'attaques en intérieur. On l'appelle aussi en français « mérule des maisons », « cancer du bâtiment » ou plus simplement mérule, bien que d'autres espèces comparables soient concernées à travers le monde. Peu visible dans la nature, où il détruit les souches de feuillus comme de conifères, ce champignon lignivore est un redoutable ennemi du bois œuvré et de tous les matériaux contenant de la cellulose. Il est à l'origine de la pourriture cubique qui dégrade la cellulose, sans toucher à la lignine.
No narrative description available for this taxon yet.
A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Serpula lacrymans has left across the world's sequence archives.
At a glance
DNA specimens121
Marker genes2
GenBank sequences10
eDNA detections132
Countries16
The DNA barcodea real sequence read deposited for this species
Serpula lacrymans var. shastensis clone 4763 5.8S ribosomal RNA gene, partial sequence; internal transcribed spacer 2, complete sequence; and large subunit ribosomal RNA gene, partial sequence
Marker genes sequenced
★ the standard DNA barcode for this group — the short region actually read to tell this species apart. The rest are extra genes sequenced along the way.
★ITS10★ITS1
fungal barcode
06Genome at a glanceNCBI
The complete instruction manualSerpula lacrymans carries — its genome. We read it from three angles — how big it is, how the DNA is packed into chromosomes, and how completely it has been sequenced — and explain how to read each value as you go.
Genome sizehow big the whole instruction manual is
Genome size47 000 000 bp
Measured in base pairs (bp) — the individual letters of DNA (human ≈ 3.2 Gb, a bacterium a few million). The chart places this genome on a logarithmic scale — each step to the right is ten times bigger — among reference organisms. Across species a bigger genome loosely tracks with larger cells, slower growth and lower-energy lifestyles (powered flight favours small genomes) — yet it does not imply more genes or a more advanced organism (the long-standing C-value paradox).
BACTERIUM Carsonella ruddii0.00016 Gb
FUNGUS0.04 Gb
THIS GENOME Serpula lacrymans0.05 Gb
INSECT0.25 Gb
HUMAN3.2 Gb
WHEAT17 Gb
FERN Tmesipteris160.45 Gb
Sequencing statusassembly quality — how far to trust these numbers
Assembly level tells you how finished the sequence is — from fragmented contigs, through scaffolds, up to a full chromosome-level assembly. BUSCO % estimates completeness: the share of genes expected to be present that were actually found. These describe the data quality, not the organism.
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy40% within 1 km
≤100 m 70≤1 km 56≤10 km 190
316 georeferenced · 36 without coordinates
Open the mapobservation + sensor352
Museum / Voucheredphysical evidence
Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.
Coordinate accuracy41% within 1 km
≤100 m 50≤1 km 67≤10 km 131>10 km 38
286 georeferenced · 384 without coordinates
Open the institutions mapphysical evidence670
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Coordinate accuracy
no georeferenced coordinates · 1 records without
Open the mapnot free-living1
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
10Collections & institutions
Holding institutions29 of 55 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Olocation not on record
91
Helsinki, FI
89
Bronx, US
43
Museo Entomologico de Leonlocation not on record
35
Auckland, NZ
33
Bernard Price Institute for Palaeontological Researchlocation not on record
32
Tartu, EE
28
Karlsruhe, DE
25
Görlitz, DE
24
Chicago, US
16
Copenhagen, DK
15
Oulu, FI
14
UNINE:NEUlocation not on record
11
LDlocation not on record
8
Philadelphia, US
8
Uppsala, SE
8
Kuopio, FI
7
Jyväskylä, FI
6
Joensuu, FI
6
WU-MYClocation not on record
6
GJOlocation not on record
5
Museo civico di Storia naturale Giacomo Doria di Genova | Giacomo Doria Natural History Museum in Genoalocation not on record
5
Acadia Universitylocation not on record
5
Toronto, CA
4
TROMlocation not on record
4
Pullman, US
3
Salzburg, AT
3
WTUlocation not on record
2
Kensington, AU
2
Mlocation not on record
2
Universidade de Lisboa, Museu Bocagelocation not on record
2
Kew, GB
2
DPIlocation not on record
2
Brisbane, AU
2
Trondheim, NO
2
Catholic University of Pekinglocation not on record
2
BDBClocation not on record
1
SLU Artdatabankenlocation not on record
1
MeiseBGlocation not on record
1
Canberra, AU
1
CA
1
Mexico City, MX
1
Adelaide, AU
1
Baton Rouge, US
1
California State University, East Baylocation not on record
1
Museum Ludovicae Ulricae, Zoology Institute of the University of Uppsalalocation not on record
1
Zürich, CH
1
Royal Botanic Gardens, Kewlocation not on record
1
Université de Montréal Biodiversity Centrelocation not on record
1
University of Tennessee at Chattanoogalocation not on record
1
ILLSlocation not on record
1
UAclocation not on record
1
TENN-Flocation not on record
1
Turku, FI
1
Ciudad de México, MX
1
55 institutions · 571 of 670 vouchered records shown · 54 without an institution code
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
09Environmental DNA132 detections
Where the DNA of Serpula lacrymans was picked up in samples of water, soil or air — nobody saw the organism, only its DNA left behind. A trace is a clue that the species was near, not a confirmed sighting.
Signal
Detections DNA found132
Studies independent surveys4
Countries14
Verifiable raw sequence linked1
Signal confidence: moderateweighed across independent studies, places & mapped detections
DNA read depthRead counts were not reported for this species — the map shows presence only, not how strong each trace was.
Modelled climatemodelled
−15°Ctemperature across detection sites+40°C
Temperature median5.90 °C 3.50–16.3
Seasonal swing summer↔winter23.1 °C
Max temp (day)9.20 °C 6.80–21.3
Min temp (night)2.20 °C -0.6–9.70
Precipitation61.7 mm/mo 57.6–141
Air humidity63.5 % 52.6–65.4
Moisture balance17.8 mm/mo -17.8–68.8
Vapour deficit428 Pa 350–872
Wind speed2.80 m/s 1.90–4.70
Cloud cover49.9 % 32.1–53.4
CHELSA 1981–2010, ~9 km grid, at location & month of 52 detection points · median with p10–p90 · reflects where sampling happened, not only the true niche
How to read this: each dot is one detection of this species' DNA in an environmental sample. The confidence meter weighs how many independent studies and places back up the signal — one detection in one study is a hint; many across several studies is solid. Records dated before 2008 (when eDNA methods began) are treated as likely mislabeled and left off the map.
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility1 035 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI132 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics121 specimens↗
NCBIUS National Library of Medicinesequences↗
Open Tree of LifeOpenTreephylogeny backbone↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗