Morchella disparilis

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Morchella disparilis
Morchella disparilis (13.4.11-Agia Paraskevi, Cyprus).jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Pezizomycetes
Order: Pezizales
Family: Morchellaceae
Genus: Morchella
Species:
M. disparilis
Binomial name
Morchella disparilis
Loizides & P.-A. Moreau (2016)

Morchella disparilis is an Ascomycete fungus in the family Morchellaceae . Described as new to science in 2016, M. disparilis appears to be confined to the Mediterranean basin and is so far known from Cyprus, Greece and Spain. Its most striking feature is the exceptionally deep sinus (the bent at the attachment of the cap with the stem), intermediate in depth between half-free morels of the Morchella semilibera clade and typical Distantes species.

Contents

Taxonomy and phylogeny

Morchella disparilis was described as new to science in 2016 by Loizides and colleagues, in an elaborate phylogenetic and morphological study of the genus Morchella from the island of Cyprus, in which Morchella arbutiphila was also newly described. [1] Because the species remained completely unknown until then and had not been detected in previous phylogenetic assessments published from Turkey, [2] [3] France [4] and Spain, [4] it had not been assigned an informal "Mel" designator. Molecular analysis of nucleic acid sequences from the internal transcribed spacer (ITS), the elongation factor EF-1α, and the RNA polymerase II (rpb1, rpb2) regions, strongly supported the monophyly of M. disparilis, with sister-clade relationships to the Mel-12/13/26/27 complex and 3.6% sequence divergence from its closest genealogical relative M. deliciosa (Mel-26). [1]

The Latin epithet of the species means "different" or "dissimilar", referring to its unusually deep sinus.

Description

Morphology

The fruit bodies are small- to medium-sized with an elongated stipe in maturity. The cap is 1–3(–4) cm high × 1–2(–3) cm wide, conical with olive-brown, greenish, olive-grey, or rarely pinkish tinges and is attached to the stipe with a distinctly deep, angular sinus. The longitudinal ridges are distant, flexuous, anastomosed and interconnected by sparse secondary ridges. The pits are usually large and irregularly shaped. The stipe is 1–4(–6) × 0.8–2(–2.5) cm, more or less cylindrical or inflated at the base, whitish or sometimes with ochre tinges, furfuraceous, hollow, short at first but gradually extends to become equal or longer than the cap. Fruit bodies have a typical, rather strong morel odour. [1] [5]

The ascospores measure (20–)22–26(– 27) × (12–)13–17(–18) μm, are ellipsoid in shape, hyaline (translucent) and have external droplets attached to the poles. Although they appear smooth under a light microscope, when viewed in lactophenol cotton blue or under a scanning electron microscope, the spore surface is faintly creased. The asci (spore-bearing cells) measure 230– 305 × 20–25 μm, are cylindrical to clavate, hyaline, and have a simple septum at the base. The paraphyses measure 135–205 × 10–12 μm, are hyaline, irregularly cylindrical, have variably shaped tips and 1–3 septa in the lower third or at the base. The acroparaphyses measure 110–170 × 15–40 μm, are fasciculate and polymorphic, with sparse capitate elements and 1–2 septa towards the base. The stipe surface is composed of variously shaped and poorly differentiated cells, from globose to cylindrical, clavate or pyriform, measuring 55–90 × 20–40 μm. [1] [6] [5]

Similar species

Because of its unusually deep sinus, Morchella disparilis can sometimes be confused with Morchella semilibera and other "half-free" morels such as M. populiphila or M. iberica. All these species however grow in different habitats, have a deeper sinus attached to the cap halfway up and generally have longer, smooth stipes.

Morchella arbutiphila , another species described from Cyprus, can sometimes be found in the same habitat as M. disparilis, but produces larger fruit bodies with a shallower sinus. Microscopically, it has larger spores than M. disparilis, often approximating or exceeding 30 μm in length and longer, distinctly catenulate terminal hyphae on the stipe 125–140 μm long.

Habitat and distribution

Morchella disparilis fruits in spring in the Mediterranean region and is so far known from the island of Cyprus, Greece and Spain. It is found in the thermomediterranean zone, often among typically Mediterranean vegetation such as cypress trees ( Cupressus sempervirens ), strawberry trees ( Arbutus andrachne , A. unedo ), or hawthorn ( Crataegus azarolus ). [1] [7] [5]

Related Research Articles

<i>Morchella</i> Genus of fungi

Morchella, the true morels, is a genus of edible sac fungi closely related to anatomically simpler cup fungi in the order Pezizales. These distinctive fungi have a honeycomb appearance due to the network of ridges with pits composing their caps. Morels are prized by gourmet cooks, particularly in Catalan and French cuisine, but can be toxic if consumed raw. Due to difficulties in cultivation, commercial harvesting of wild morels has become a multimillion-dollar industry in the temperate Northern Hemisphere, in particular North America, Turkey, China, the Himalayas, India, and Pakistan where these highly prized fungi are found in abundance.

<i>Morchella elata</i> Species of fungus

Morchella elata is a species of fungus in the family Morchellaceae. It is one of many related species commonly known as black morels, and until 2012 the name M. elata was broadly applied to black morels throughout the globe. Like most members of the genus, M. elata is a popular edible fungus and is sought by many mushroom hunters.

<i>Morchella rufobrunnea</i> Species of edible fungus in the family Morchellaceae

Morchella rufobrunnea, commonly known as the blushing morel, is a species of ascomycete fungus in the family Morchellaceae. A choice edible species, the fungus was described as new to science in 1998 by mycologists Gastón Guzmán and Fidel Tapia from collections made in Veracruz, Mexico. Its distribution was later revealed to be far more widespread after several DNA studies suggested that it is also present in the West Coast of the United States, Israel, Australia, Cyprus, Malta and Switzerland.

<i>Morchella tridentina</i> Species of fungus

Morchella tridentina is a cosmopolitan species of ascomycete fungus in the family Morchellaceae. Commonly referred to as the mountain blond or western blond morel in North America, it produces conical, grey to buff fruit bodies that are rufescent and grow up to 20 cm (7.9 in) tall and 5 cm (2.0 in) wide. This early-diverging species is distinct within the /Elata clade due to its pale colours and has been described by many names in the past, including M. frustrata, M. quercus-ilicis, M. elatoides, M. elatoides var. elegans and M. conica var. pseudoeximia, all of which were shown to be synonyms. A widely distributed relict of the last Ice Age, M. tridentina is so far known from Argentina, Armenia, Chile, Cyprus, France, India, Israel, North America, Spain and Turkey.

<i>Morchella americana</i> Species of fungus

Morchella americana is a North American species of fungus in the family Morchellaceae.

<i>Morchella snyderi</i> Species of fungus

Morchella snyderi is a species of fungus in the family Morchellaceae. Described as new to science in 2012, it occurs in the montane forests of western North America, including California, Idaho, Montana, Oregon and Washington. It produces fruit bodies up to 14 cm (5.5 in) tall with ridged and pitted conical caps, and stipes that become pitted in maturity. The color of the morel is yellow to tan when young, but the cap ridges become brown to black in maturity or when dried.

<i>Morchella importuna</i> Species of fungus

Morchella importuna is a species of fungus in the family Morchellaceae described from North America in 2012. It occurs in gardens, woodchip beds, and other urban settings of northern California and the Pacific Northwest region of the United States and Canada. The fungus has also been reported from Turkey, Spain, France, Switzerland, Canada and China, although it is unknown whether this is a result of accidental introductions. It is considered a choice edible mushroom. The fruit bodies develop a distinctive ladder-like pattern of pits and ridges on the surface of their conical caps.

Morchella capitata is a later synonym of Morchella exuberans. Originally identified as phylogenetic species Mel-9, it was described as new to science in 2012 by Kuo and colleagues. In 2014 however, Richard and colleagues clarified the taxonomic status of this species, retaining the name Morchella exuberans of Clowez (2012) over M. capitata.

<i>Morchella septimelata</i> Species of fungus

Morchella septimelata is a species of fungus in the family Morchellaceae described as new to science in 2012. Occurring in western North America, it has been collected from British Columbia, Montana and Oregon, where it fruits at elevations of 1,000 to 2,000 m in coniferous forests in years following slight to moderate burning.

<i>Morchella sextelata</i> Species of fungus

Morchella sextelata is a species of ascomycete fungus in the family Morchellaceae. Described as new to science in 2012, it is found in North America. It has also been found in China, although it is not known if this is a result of an accidental introduction or natural dispersion. The fruit bodies have a roughly conical cap up to 7.5 cm (3 in) tall and 5 cm (2 in) wide, with a surface of mostly vertically arranged pits. The cap is initially yellowish to brownish, but it darkens to become almost black in maturity. The stipe is white and hollow, measuring 2–5 cm (0.8–2.0 in) high by 1–2.2 cm (0.4–0.9 in) wide.

<i>Morchella populiphila</i> Species of fungus

Morchella populiphila is a species of morel fungus native to northwestern North America. Described as new to science in 2012, its specific epithet refers to its association with black cottonwood. The morel used to be referred to as Morchella semilibera in western North American field guides until molecular analysis established that to be a strictly European species. M. populiphila occurs in California, Nevada and Oregon. Its fruit bodies grow up to 15 cm (6 in) tall with a ridged and pitted conical cap that attaches about halfway down the stipe. The cap ridges are dark brown to black in maturity, while the pits are yellowish to brownish. The fungus is edible, although not as highly valued as other morels.

<i>Morchella anatolica</i> Species of fungus

Morchella anatolica is a rare species of ascomycete fungus in the family Morchellaceae. It was described as new to science in 2010 from southwest Anatolia, Turkey, where it grows on moss-covered stream beds in pine forests. An ancient climatic relict, M. anatolica is restricted to the Mediterranean basin and has also been documented in Spain, Cyprus and Greece, where it is sometimes encountered with trees of the Oleaceae family. Together with its sister-species Morchella rufobrunnea, they are the earliest diverging lineages in genus Morchella, forming a distinct clade that is basal in global morel phylogenies. Because of its phylogenetic position, M. anatolica has been crucial in inferring the historical biogeography of the genus, which is estimated to have emerged somewhere in the Mediterranean region in the late Jurassic.

<i>Morchella arbutiphila</i> Species of fungus

Morchella arbutiphila is a species of fungus in the family Morchellaceae (Ascomycota), described from the island of Cyprus in 2016. The species is notable for its elongated stipe, which is often longer than the cap's length, its ascospores which are larger than most other species of Morchella, and its highly specific ecological preferences. It is known only from igneous substrates of the Troodos mountains in Cyprus and from a single collection in the Aegean region of Turkey.

<i>Morchella fluvialis</i> Species of fungus

Morchella fluvialis is a species of fungus in the family Morchellaceae. It was described as new to science in 2014 by Clowez and colleagues, following collections from riparian forests in Spain under Alnus glutinosa, Ulmus minor and Eucalyptus camaldulensis, although previous collections from Turkey under Pinus nigra have also been reported. This species, which corresponds to phylogenetic lineage Mes-18, is very close to Morchella esculenta, from which it differs in its elongated cap with oblong pits and predominantly longitudinal ridges, pronounced rufescence, as well as its Mediterranean hygrophilic distribution along rivers and streams.

Morchella kakiicolor is a species of fungus in the family Morchellaceae (Ascomycota). It was originally proposed as a form of Morchella quercus-ilicis in a 2012 study by Philippe Clowez, but was later re-combined as an autonomous species by Loizides and colleagues, based on molecular phylogenetic data. In the same study, M. quercus-ilicis f. quercus-ilicis was shown by the authors to be a later synonym of the old taxon Morchella tridentina, and not phylogenetically related to M. kakiicolor.

<i>Morchella eximia</i> Species of fungus

Morchella eximia is a globally-occurring fungus in the family Morchellaceae (Ascomycota), first described by Émile Boudier in 1910. In an elaborate phylogenetic and nomenclatural revision of the genus in 2014, Richard and colleagues showed that the taxa Morchella anthracophila, Morchella carbonaria, and Morchella septimelata, proposed in 2012 by Clowez and Kuo et al. respectively, are all later synonyms of this old taxon.

<i>Morchella dunensis</i> Species of fungus

Morchella dunensis, the morel of the dunes, is a species of fungus in the family Morchellaceae (Ascomycota). It was first described as a form of Morchella esculenta by Castañera and colleagues in 1996, but was later recombined as a distinct species by Clowez. In a 2014 study by Richard and colleagues, the authors concluded that the taxon was conspecific to Morchella vulgaris, due to its close phylogenetic proximity to the latter. However, following increased molecular sampling and the testing of an isoparatype collection by Loizides and colleagues in 2016, it was revealed that M. dunensis is indeed very closely related to, but phylogenetically distinct from M. vulgaris. This study also showed that the taxon Morchella andalusiae is phylogenetically identical and therefore a later synonym of M. dunensis.

<i>Morchella dunalii</i> Species of fungus

Morchella dunalii is a species of fungus in the family Morchellaceae (Ascomycota). A widespread species in the Mediterranean basin, M. dunalii is so far known from the Balearic islands, the islands of Corsica and Cyprus, France, Spain and Turkey, where it appears to be abundant. It fruits very early in the season on calcareous soil, usually in association with the Aleppo pine, Calabrian pine and holm oak.

<i>Morchella purpurascens</i> Species of fungus

Morchella purpurascens, the purple morel, is an ascomycete fungus in the family Morchellaceae. It was first described as a variety of Morchella elata by Emile Boudier in 1897, based on a plate previously illustrated by Julius Vincenz von Krombholz. It was then recombined as a distinct species in 1985 by Emile Jacquetant, and validated the following year by Jacquetant and Bon. As with many other morel species, its taxonomical status remained for a long time a subject of debate, until an extensive phylogenetic and nomenclatural study in 2014 by Richard and colleagues confirmed this species' autonomy and matched it to phylogenetic lineage Mel-20.

Morchella exuberans is a species of fungus in the family Morchellaceae (Ascomycota). It was described as new to science in a 2012 study by Clowez and corresponds to phylogenetic lineage Mel-9. Morchella capitata, described by Kuo and colleagues later in the same year, is a synonym of this taxon.

References

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