Morphological and Phylogenetic Analyses of ThreePhytopythiumSpecies (Peronosporales, Oomycota) from Brazil

Jesus, Ana Lúcia de; Gonçalves, Danilo Reis; Rocha, Sandra; Marano, Agostina V.; Jerônimo, Gustavo Henrique; Souza, José Ivanildo de; Boro, Marcela Castilho; Pires-Zottarelli, Carmen Lidia Amorim

doi:10.7872/crym/v37.iss1.2016.117

Cited by 13 publications

(11 citation statements)

References 10 publications

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“…Phylogenetic analyses presented herein are in line with those of Baten et al [23] and Jesus et al [24], where Phytopythium was divided into three clades based on LSU, ITS, cox1, and cox2 sequences. Clade 1 includes 15 taxa and these are P. aichiense, P. boreale, P. carbonicum, P. citrinum, P. delawarense, P. iriomotense, P. litorale, P. mercuriale, P. megacarpum, P. mirpurense, P. montanum, P. oedochilim, P. ostracodes, P. sindhum, and P. sterilum.…”

Section: Discussionsupporting

confidence: 88%

“…Both strains were isolated from mangrove leaf litter, where they acted as saprotrophs. The strain USTCMS 4102 was inferred to be a member of the Clade 1 [23,24] group of Phytopythium (Fig. 4) and is almost sequence-identical to CBS 113.91 isolated from Taiwan.…”

Section: Discussionmentioning

confidence: 98%

“…USTCMS 4101 is a member of the Clade 2 of Phytopythium [23,24], and differs from all other members of the clade by featuring both internal and external proliferation, while other members of this clade are featuring extended or nested-internal proliferation [20]. USTCMS 4101 is similar to P. chamaehyphon, P. fagopyri, P. helicoides, and P. palingenes.…”

Section: Discussionmentioning

confidence: 98%

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Phytopythium leanoi sp. nov. and Phytopythium dogmae sp. nov., Phytopythium species associated with mangrove leaf litter from the Philippines

et al. 2018

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The genus Phytopythium is a monophyletic taxon of the Peronosporaceae with characteristics intermediate between Phytophthora and Pythium. In the Philippines, reports of Phytopythium are scarce, with the mangrove-swamp-inhabiting species Phytopythium kandeliae being the only species recorded to date. It was the aim of the current study to investigate the diversity of Phytopythium in mangrove habitats in more detail. Based on culture characteristics, morphology, and molecular phylogenetic position, two new species of Phytopythium are described from Philippine mangroves, P. leanoi USTCMS 4102 and P. dogmae USTCMS 4101. Phytopythium leanoi is a species morphologically similar to P. kandeliae, but with the ability to develop gametangia in a homothallic fashion. The other new species, P. dogmae, is characterized by having a short discharge tube, semipapillate to papillate sporangia and frequently exhibiting a clustering of two sporangia per sporangiogenic hypha. With the addition of the two species described in this study, the genus Phytopythium has grown from around 10 to beyond 20 recognized species over the past decade, and it seems likely that several more species of this genus await discovery.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 98%

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Phytopythium leanoi sp. nov. and Phytopythium dogmae sp. nov., Phytopythium species associated with mangrove leaf litter from the Philippines

et al. 2018

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“…[25] and Jesus et al [26] have identified three subclades within Phytopythium . Morphologically, Clades 1 and 2 differ from Clade 3 by having papillate sporangia as well as internal sporangial proliferation [25,26]. Each of three Phytopythium species isolated in Korea was assigned to the three clades; W672 was matched with Phy.…”

Section: Resultsmentioning

confidence: 99%

“…As a result, a new genus Phytopythium intermediate between Phytophthora and Pythium was introduced to separate it from other groups of Pythium [23,24]. Phytopythium species were further subdivided into three clades [25,26].…”

Section: Introductionmentioning

confidence: 99%

PhytopythiumandPythiumSpecies (Oomycota) Isolated from Freshwater Environments of Korea

Nam

Choi

2019

Mycobiology

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Oomycetes are widely distributed in various environments, including desert and polar regions. Depending upon different habits and hosts, they have evolved with both saprophytic and pathogenic nutritional modes. Freshwater ecosystem is one of the most important habitats for members of oomycetes. Most studies on oomycete diversity, however, have been biased mostly towards terrestrial phytopathogenic species, rather than aquatic species, although their roles as saprophytes and parasites are essential for freshwater ecosystems. In this study, we isolated oomycete strains from soil sediment, algae, and decaying plant debris in freshwater streams of Korea. The strains were identified based on cultural and morphological characteristics, as well as molecular phylogenetic analyses of ITS rDNA, cox1, and cox2 mtDNA sequences. As a result, we discovered eight oomycete species previously unknown in Korea, namely Phytopythium chamaehyphon, Phytopythium litorale, Phytopythium vexans, Pythium diclinum, Pythium heterothallicum, Pythium inflatum, Pythium intermedium, and Pythium oopapillum. Diversity and ecology of freshwater oomycetes in Korea are poorly understood. This study could contribute to understand their distribution and ecological function in freshwater ecosystem.

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Calycofera gen. nov., an estuarine sister taxon to Phytopythium, Peronosporaceae

et al. 2017

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Morphological and Phylogenetic Analyses of ThreePhytopythiumSpecies (Peronosporales, Oomycota) from Brazil

Cited by 13 publications

References 10 publications

Phytopythium leanoi sp. nov. and Phytopythium dogmae sp. nov., Phytopythium species associated with mangrove leaf litter from the Philippines

Phytopythium leanoi sp. nov. and Phytopythium dogmae sp. nov., Phytopythium species associated with mangrove leaf litter from the Philippines

PhytopythiumandPythiumSpecies (Oomycota) Isolated from Freshwater Environments of Korea

Calycofera gen. nov., an estuarine sister taxon to Phytopythium, Peronosporaceae

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