Skip to main content

Talaromyces disparis, Talaromyces funiformis and Talaromyces jianfengicus from soil established in sect. Tal.

Talaromyces disparis, Talaromyces funiformis and Talaromyces jianfengicus from soil established in sect. Tal.

NEWS - Talaromyces disparis (ex-type AS3.26221), Talaromyces funiformis (ex-type AS3.26220) and Talaromyces jianfengicus (ex-type AS3.26253) isolated from soil were established as three new species in sect. Talaromyces based on morphological characters and phylogenetic analysis of BenA, CaM, Rpb2 and ITS sequences.

Talaromyces species play important roles in nutrient cycling in natural ecosystems, plant biomass degradation in industry and implications in medicine. However, the diversity of this genus is far from being fully understood. The genus is currently divided into 8 sections (Bacillispori, Helici, Islandici, Purpurei, Subinflati, Talaromyces, Tenues and Trachyspermi).

In a survey of Talaromyces in China, researchers found five typical Talaromyces strains and proposed three new species represented by these strains included in sect. Talaromyces, which now includes about 90 species, is the largest section within Talaromyces and generally grows rapidly to clumps with a diameter of more than 30 mm on MEA.

The species in this section are usually phylogenetically distant, but some closely related taxa form species complexes and members of these species complexes are not easily distinguished from each other using morphology, especially micromorphology.

The researchers used a polyphasic taxonomy that combines morphological and phylogenetic characters to establish a new species based on a single strain, because this species is phylogenetically unique and morphologically clearly distinguishable from other species. The proposed three species were also confirmed by phylogenetic analysis of the BenA-CaM-Rpb2, BenA-CaM-ITS concatenations and the BenA, CaM, Rpb2, and ITS sequence matrices individually.

T. disparis is nicknamed on penicillins in various patterns and conidia of various shapes and dimensions. The taxon is characterized by low growth, velvety texture and limited to moderate sporulation. Penicillates are biverticulate, monoverticulate, irregular and have polymorphic smooth-walled conidia with some abnormally large round conidia.

T. disparis is a unique species with no close relatives in Talaromyces based on phylogenetic analysis and no bootstrap support provided, although it is in a clade with T. intermedius, T. viridis and T. panamensis in the BenA-CaM-Rpb2 phylogram

T. funiformis is named for its funiculose appearance on CYA, MEA and YES. This taxon is included in the T. pinophilus complex. The species produces mycelial funicules on CYA, MEA and YES. Sporulation is rare on Cz, CYA, MEA and YES but abundant on OA. Growth rate is low at 37°C. Penicillates are biverticulate and conida are round to pyriform with smooth to rough walls.

T. jianfengicus is given its specific epithet in reference to the location where the ex-type strain was isolated. This species belongs to the T. verruculosus complex which includes T. johnpittii, T. stellenboschiensis, T. yunnanensis, and T. verruculosus. These members generally grow moderately to rapidly on MEA, YES, and OA.

T. jianfengicus is characterized by velvety colony texture with moderately to abundant elm green conidia and green-yellow mycelium, biverticulate penicillata, ampulliform phialids, and spherical conidia with verrucous walls.

Original research

Ren X, Li S, Ruan Y, Wang L. 2024. Three new species of Talaromyces sect. Talaromyces discovered in China. PeerJ 12:e18253, DOI:10.7717/peerj.18253

Dlium theDlium
Labels:

Popular Posts

Wild durian (Cullenia exarillata)

Wild durian ( Cullenia exarillata ) is a species of plant in the Malvaceae, a tall tree with smooth, greyish-white bark, peeling on older trees, a straight trunk, horizontal branches and often with a series of knob-like tubercles for flower and fruit attachment. C. exarillata has young branches and the underside of the leaves is covered with golden brown peltate or shield-like scales. The leaves are single, alternate, glabrous, glossy green on the upper side and covered with silvery or orange peltate scales on the underside. Hermaphroditic flowers are tubular and also covered with golden brown scales, 4-5 cm long and cream or reddish brown in color. Flowers have no petals, formed of tubular bracteoles and tubular calyxes, 5-lobed. Fruit is round, 10-13 cm in diameter, covered with thorns and clustered along the branches. Many seeds, reddish brown, 4-5 cm long and 2-3 cm wide. The seeds are enclosed by a fleshy, whitish aril. The fruit splits open when ripe and dries to release the s...
Read more

Prof. Weiming Zhu ironwood (Xantolis weimingii) described with completely glabrous flower crowns

NEWS - Xantolis weimingii (Sapotaceae, Chrysophylloideae) is described from Yunnan, southwest China and can be easily distinguished from its relatives by the combination of densely covered plants with ferruginous arachnoid-lanate, oblong or obovate leaves and pendulous staminodes at the base. Xantolis Raf. 1838 (Sapotaceae, Chrysophylloideae) is a small genus of trees and shrubs containing about 14 species with a distribution from the eastern Himalayas to the Philippines in tropical Asia. The genus is morphologically characterized by distinct spines, a sharp anther appendage, lanceolate lobes on the calyx and corolla, and aristate staminodes. Molecular data suggest that the genus is sister to the entire subfamily Chrysophylloideae and is a very isolated and poorly understood genus. Specimens was first collected in the Luzhijiang Valley in August 2015, but only sterile or fruiting specimens were collected. In April 2022, a specimen with flowers was finally collected in Wadie, Yuanjiang...
Read more

Thomas Sutikna lives with Homo floresiensis

BLOG - On October 28, 2004, a paper was published in Nature describing the dwarf hominin we know today as Homo floresiensis that has shocked the world. The report changed the geographical landscape of early humans that previously stated that the Pleistocene Asia was only represented by two species, Homo erectus and Homo sapiens . The report titled "A new small-bodied hominin from the Late Pleistocene of Flores, Indonesia" written by Peter Brown and Mike J. Morwood from the University of New England with Thomas Sutikna, Raden Pandji Soejono, Jatmiko, E. Wahyu Saptomo and Rokus Awe Due from the National Archaeology Research Institute (ARKENAS), Indonesia, presents more diversity in the genus Homo. “Immediately, my fever vanished. I couldn’t sleep well that night. I couldn’t wait for sunrise. In the early morning we went to the site, and when we arrived in the cave, I didn’t say a thing because both my mind and heart couldn’t handle this incredible moment. I just went down...
Read more