Achlya


Achlya is a genus of oomycete, in the family Saprolegniaceae. The genus includes several plant pathogens including Achlya conspicua and Achlya klebsiana. Unlike many other microorganisms, cell expansion is governed by changes in cell wall strength rather than changes in osmotic pressure. The genome of Achlya hypogyna has been sequenced and can be accessed on public online databases, for example on the NCBI website.
The genus was first circumscribed in Nova Acta Phys.-Med. Acad. Caes. Leop.-Carol. Nat. Cur. vol.11 on page 514 in 1823 by Christian Gottfried Daniel Nees von Esenbeck.
The type species is Achlya prolifera.
The genus name of Achlya is named after Achlys, who in the Hesiodic Shield of Heracles, is one of the figures depicted on Heracles' shield, perhaps representing the personification of sorrow.
Several Achyla spp. are pathogens of rice seedlings.

Species

As accepted by Species Fungorum;
Former species; A. abortiva f. normalis = Achlya abortivaA. acadiensis = Newbya androgyna, A. ambisexualis var. abjointa = Achlya ambisexualisA. ambisexualis var. gracilis = Achlya ambisexualisA. americana var. cambrica = Achlya americanaA. americana var. megasperma = Achlya americanaA. americana var. megasperma = Achlya americanaA. androgyna = Newbya androgynaA. apiculata = Newbya apiculataA. apiculata var. forbesiana = Newbya apiculataA. apiculata var. prolifica = Newbya apiculataA. benekei = Protoachlya benekeiA. bisexualis var. ambisexualis = Achlya ambisexualisA. brasiliensis = Newbya brasiliensisA. braunii = Newbya androgynaA. cambrica = Achlya americanaA. curvicollis = Newbya curvicollisA. debaryana var. americana = Achlya americana,A. debaryana var. intermedia = Achlya debaryanaA. dioica = Saprolegnia dioica, SaprolegniaceaeA. dubia var. pigmenta = Achlya dubiaA. flagellata var. yezoensis = Achlya flagellataA. klebsiana var. indica = Achlya klebsianaA. lignicola = Achlya racemosaA. megasperma = Newbya megaspermaA. mucronata = Protoachlya mucronataA. oblongata = Newbya oblongataA. oblongata var. gigantica = Newbya oblongataA. oblongata var. globosa = Newbya oblongataA. oligocantha = Newbya oligocanthaA. oligocantha var. brevispina = Newbya oligocanthaA. ornata = Newbya pascuicolaA. paradoxa = Isoachlya paradoxaA. polyandra sensu = Achlya debaryanaA. polyandra = Newbya polyandraA. racemosa f. maxima = Achlya racemosaA. racemosa f. polyspora = Achlya racemosaA. racemosa var. lignicola = Achlya racemosaA. racemosa var. maxima = Achlya racemosaA. racemosa var. spinosa = Newbya spinosaA. racemosa var. stelligera = Achlya racemosaA. recurva = Newbya recurvaA. spinosa = Newbya spinosaA. stellata = Newbya stellataA. stellata var. multispora = Protoachlya mucronataA. treleaseana = ''Newbya androgyna''