Published October 14, 2024 | Version v1
Taxonomic treatment Open

Backusella variispora H. Zhao & X. Y. Liu 2024, sp. nov.

  • 1. College of Life Sciences, Shandong Normal University, Jinan 250358, China & School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100081, China
  • 2. School of Civil Engineering and Architecture, Anhui University of Technology, Ma'anshan 243002, China
  • 3. Anhui Provincial Key Laboratory for Microbial Pest Control, Anhui Agricultural University, Hefei 230036, China
  • 4. College of Life Sciences, Shandong Normal University, Jinan 250358, China & State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China

Description

Backusella variispora H. Zhao & X. Y. Liu sp. nov.

Fig. 4

Etymology.

variispora (Lat.) refers to the species having an uneven size of sporangiospores.

Holotype.

HMAS 352891.

Colonies on PDA at 25 ° C for 4 days, reaching 90 mm in diameter, more than 15 mm high, flat, granulate, initially white, soon becoming pale mouse-grey, irregular at margin. Hyphae aseptate at first, septate with age, hyaline, 4.5–11.5 μm in diameter. Rhizoids absent. Stolons absent. Long sporangiophores arising directly from substrate mycelia, transitorily curved, monopodially branched, with large terminal sporangia, erect, bent or curved. Sporangia globose, hyaline to brownish, wall rough with spines, deliquescent, rough, multi-spored, with more than 20 sporangiospores per sporangium, 30.5–60.0 μm in diameter. Short sporangiophores simple or sympodial, ending with a multi-spored. Multi-spored sporangiola subglobose to globose, with numerous spines, hyaline, containing 5–10 sporangiospores, persistent-walled, 14.5–26.0 μm in diameter. Apophyses absent. Collars absent. Columellae hemispherical, subglobose to globose, hyaline, 21.0–32.5 × 20.0–33.0 μm in long sporangiophores, conical and hemispherical, hyaline, 14.5–18.5 × 14.0–18.0 μm in short sporangiophores. Sporangiospores subglobose to globose, hyaline, with droplets, 5.0–16.0 μm in diameter. Azygosporangia absent. Chlamydospores absent. Zygospores absent.

Materials examined.

China • Hainan Province, Ledong Li Autonomous County, 18 ° 42 ' 35 " N, 108 ° 52 ' 36 " E, from soil sample, 11 April 2023, (holotype HMAS 352891, living ex-holotype culture HZ 69) • Changjiang Li Autonomous County, 19 ° 7 ' 18 " N, 109 ° 7 ' 7 " E, from soil sample, 12 April 2023, Heng Zhao (living cultures HZ 105, HZ 195, and HZ 365) • Lingshui Li Autonomous County, 18 ° 42 ' 8 " N, 109 ° 50 ' 13 " E, from forest soil sample, 9 April 2023, Heng Zhao (living cultures HZ 141 and HZ 286).

GenBank accession numbers.

ITS, PP 477395 – PP 477400; LSU, PP 477405 – PP 477410, RPB 1, PP 709511 and PP 709515.

Maximum growth temperature.

35 ° C.

Notes

Published as part of Zhao, Heng, Nie, Yong, Huang, Bo & Liu, Xiao-Yong, 2024, Unveiling species diversity within early-diverging fungi from China I: three new species of Backusella (Backusellaceae, Mucoromycota), pp. 285-304 in MycoKeys 109 on pages 285-304, DOI: 10.3897/mycokeys.109.126029

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Linked records

Additional details

Biodiversity

Collection code
HMAS
Material sample ID
HMAS 352891
Event date
2023-04-09 , 2023-04-11 , 2023-04-12
Verbatim event date
2023-04-09 , 2023-04-11 , 2023-04-12
Scientific name authorship
H. Zhao & X. Y. Liu
Kingdom
Fungi
Phylum
Zygomycota
Order
Mucorales
Family
Backusellaceae
Genus
Backusella
Species
variispora
Taxon rank
species
Taxonomic status
sp. nov.
Type status
holotype
Taxonomic concept label
Backusella variispora Zhao & Liu, 2024