Pythiaceae

　

WordNet

1. fungi having sporangia usually borne successively and singly at the tips of branching sporangiophores (同)family Pythiaceae

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/04/30 15:05:05」(JST)

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Pythiaceae
Water mould - Phytophthora forms: A: Sporangia. B: Zoospore. C: Chlamydospore. D: Oospore
Scientific classification
Kingdom:	Chromalveolata
Phylum:	Heterokontophyta
Class:	Oomycota
Order:	Peronosporales
Family:	Pythiaceae J. Schröt., 1893
Type genus
Pythium Pringsh., 1858
Genera
Cystosiphon Diasporangium Lagenidium Myzocytium Pythium Trachysphaera

Pythiaceae is a family of water moulds. The family includes plant pathogenic fungus-like organisms in the genus Phytophthora; as well as serious plant and animal pathogens in the genus Pythium. The family was circumscribed by German mycologist Joseph Schröter in 1893.

Lifecycle

• Live on land (terrestrial), and in water (aquatic), and a combination of the two, (amphibious)
• Live as deadly parasites, causing some serious plant and animal diseases when terrestrial.
• The diploid (2N) life stage predominates, with a short haplophase initiated during sexual reproduction as well as asexual reproduction (homothallism predominates in the Family) to fuse gametes.

Reproduction

• The sporangia may germinate via a germ tube or by release of motile zoospores, depending on the species and the environmental conditions.

Economic importance

• Some Pythium species cause "damping-off" diseases in young plants (seedlings).

References

• C.J. Alexopolous, Charles W. Mims, M. Blackwell et al., Introductory Mycology, 4th ed. (John Wiley and Sons, Hoboken NJ, 2004) ISBN 0-471-52229-5

English Journal

• Identification of 18 genes encoding necrosis-inducing proteins from the plant pathogen Phytophthora capsici (Pythiaceae: Oomycetes).

• Feng BZ, Li PQ, Fu L, Sun BB, Zhang XG.SourceDepartment of Plant Pathology, Shandong Agricultural University, Shandong, China.
• Genetics and molecular research : GMR.Genet Mol Res.2011 May 17;10(2):910-22.
• Phytophthora capsici is an aggressive plant pathogen that affects solanaceous and cucurbitaceous hosts. Necrosis-inducing Phytophthora proteins (NPPs) are a group of secreted toxins found particularly in oomycetes. Several NPPs from Phytophthora species trigger plant cell death and activate host def
• PMID 21644208

• Salisapiliaceae - a new family of oomycetes from marsh grass litter of southeastern North America.

• Hulvey J, Telle S, Nigrelli L, Lamour K, Thines M.SourceUniversity of Tennessee, Genome Science and Technology Graduate Program, Knoxville, TN, USA.
• Persoonia.Persoonia.2010 Dec;25:109-16. Epub 2010 Dec 14.
• Several filamentous oomycete species of the genus Halophytophthora have recently been described from marine environments, mostly from subtropical and tropical ecosystems. During a survey of oomycetes from leaf litter of Spartina alterniflora in salt marshes of southeastern Georgia, isolates of four
• PMID 21339970

Japanese Journal

• Intraspecific and within-isolate sequence variation in the ITS rRNA gene region of Pythium mercuriale sp. nov. (Pythiaceae)

• BELBAHRI L
• FEMS Microbiol Lett 284, 17-27, 2008
• NAID 80019625493

• Autumn disdtribution of marine Pythiaceae across a mangrove-saltmarsh boundary

• NEWELL S. Y.
• Can. J. Bot. 70, 1912-1916, 1992
• NAID 30041378991

Related Links

• Pythiaceae - Wikipedia, the free encyclopedia

Pythiaceae is family of water moulds. The family includes plant pathogenic fungus-like organisms in the genus Phytophthora; as well as serious plant and animal pathogens in the genus Pythium. ...

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