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The '''''Coniochaeta''''' are [[pleomorphic]] [[yeast]]s of the order [[Coniochaetales|''Coniochaetales'']]. They can take the form of pink to brown colonies, hyphae, condiophores or sclerotia. In 2013, the ''Lecythophora'' were merged with the ''Coniochaeta'', following suggestions by Khan ''et al''<ref>Coniochaeta polymorpha, a new species from endotracheal aspirate of a preterm neonate, and transfer of Lecythophora species to Coniochaeta. Khan Z, Gené J, Ahmad S, Cano J, Al-Sweih N, Joseph L, Chandy R, Guarro J. Antonie Van Leeuwenhoek. 2013 Aug;104(2):243-52. doi: 10.1007/s10482-013-9943-z </ref>.
The '''''Coniochaeta''''' form a [[genus]] of [[pleomorphic]] [[yeast]]s of the order [[Coniochaetales|''Coniochaetales'']] and are pathogens of trees.<ref>{{cite journal|last1=Damm|first1=U|last2=Fourie|first2=PH|last3=Crous|first3=PW|title=Coniochaeta (Lecythophora), Collophora gen. nov. and Phaeomoniella species associated with wood necroses of Prunus trees.|journal=Persoonia|date=June 2010|volume=24|pages=60-80|pmid=20664761}}</ref> They can take the form of pink to brown colonies, hyphae, condiophores or sclerotia. In 2013, the ''Lecythophora'' were merged with the ''Coniochaeta'', following suggestions by Khan ''et al''<ref>Coniochaeta polymorpha, a new species from endotracheal aspirate of a preterm neonate, and transfer of Lecythophora species to Coniochaeta. Khan Z, Gené J, Ahmad S, Cano J, Al-Sweih N, Joseph L, Chandy R, Guarro J. Antonie Van Leeuwenhoek. 2013 Aug;104(2):243-52. doi: 10.1007/s10482-013-9943-z </ref>.


Species:
Species:

Revision as of 16:32, 30 March 2015

The Coniochaeta form a genus of pleomorphic yeasts of the order Coniochaetales and are pathogens of trees.[1] They can take the form of pink to brown colonies, hyphae, condiophores or sclerotia. In 2013, the Lecythophora were merged with the Coniochaeta, following suggestions by Khan et al[2].

Species:

  • C. polymorpha
  • C. mutabilis
  • C. decumbens
  • C. discoidea
  • C. hoffmannii
  • C. canina
  • C. cateniformis
  • C. lignicola
  • C. luteorubra
  • C. luteoviridis
  • C. fasciculata
  • C. velutina

Ecology

The Coniochaeta have been described as typically associated with wood, water, soil [3],[4]. However, there is also growing evidence of specialised associations between each species and specific environments, and a suggestion that 4 spored and 8 spored species interact differently with their environments, some species surviving forest fires, which activate their sexual cycle [5]. Other members of the Coniochaeta, most commonly Coniochaeta polymorpha, can cause clinical infections in immunocompromised individuals (Khan et al, 2013), which has increased recent interest in the genus.

References

  1. ^ Damm, U; Fourie, PH; Crous, PW (June 2010). "Coniochaeta (Lecythophora), Collophora gen. nov. and Phaeomoniella species associated with wood necroses of Prunus trees". Persoonia. 24: 60–80. PMID 20664761.
  2. ^ Coniochaeta polymorpha, a new species from endotracheal aspirate of a preterm neonate, and transfer of Lecythophora species to Coniochaeta. Khan Z, Gené J, Ahmad S, Cano J, Al-Sweih N, Joseph L, Chandy R, Guarro J. Antonie Van Leeuwenhoek. 2013 Aug;104(2):243-52. doi: 10.1007/s10482-013-9943-z
  3. ^ Weber E (2002) The Lecythophora-Coniochaeta complex I. Morphological studies on Lecythophora species isolated from Picea abies. Nova Hedwigia 74:159–185
  4. ^ Weber E, Go¨rke C, Begerow D (2002) The Lecythophora/Coniochaeta complex II. Molecular studies based on sequences of the large subunit of ribosomal DNA. Nova Hedwigia 74:187–200
  5. ^ Coniochaeta extramundana, with a Synopsis of Other Coniochaeta Species. D. P. Mahoney and J. S. LaFavre Mycologia Vol. 73, No. 5 (Sep. - Oct., 1981), pp. 931-952