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Issue: Vol. 777 No. 1: 29 Sept. 2026
Type: Article
Published: 2026-09-29
DOI: 10.11646/phytotaxa.777.1.2
Page range: 19-35
Abstract views: 58
PDF downloaded: 5

Saxaulicola iranica gen. et sp. nov. and two new species of Carteromyces from Haloxylon persicum in North Khorasan Province, Iran

Department of Horticulture and Landscape Design; Shirvan Faculty of Agriculture; University of Bojnord; Bojnord; Iran
Fungi Chaetomiaceae Chenopodiaceae 1 new genus 3 new species phylogeny taxonomy

Abstract

During a survey of endophytic fungi associated with Haloxylon persicum, six fungal isolates were obtained from the shoots of healthy white saxaul plants collected in North Khorasan Province, Iran. Morphological examination and phylogenetic analyses based on a concatenated four-locus dataset comprising the internal transcribed spacer regions (ITS), partial large subunit nuclear ribosomal DNA (LSU), β-tubulin (TUB2), and the second-largest subunit of RNA polymerase II (RPB2) revealed three novel taxa within the family Chaetomiaceae. Consequently, a new genus, Saxaulicola gen. nov., is introduced to accommodate Saxaulicola iranica sp. nov., together with two new species, Carteromyces haloxyloni sp. nov. and Carteromyces khorasaniensis sp. nov. Saxaulicola is distinguished from its closest phylogenetic relatives, Oidiosporium and Carteromyces, by its solitary ascomata covered with a dense mass of hyaline, septate, coiled hyphae-like structures, a perithecial wall composed of textura angularis, ellipsoidal ascospores bearing a distinct apical germ pore, and the production of both conidia and chlamydospores. C. haloxyloni differs from the type species, C. arctostaphyli, in possessing ovoid ascospores, whereas C. khorasaniensis is distinguished by narrower ascospores with apical germ pores. Furthermore, both newly described species produce an asexual morph, a feature not previously reported in the genus. An identification key to the currently accepted species of Carteromyces is also provided

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How to Cite

Mehrabi, M. (2026) Saxaulicola iranica gen. et sp. nov. and two new species of Carteromyces from Haloxylon persicum in North Khorasan Province, Iran. Phytotaxa 777 (1): 19–35. https://doi.org/10.11646/phytotaxa.777.1.2