Phylogenetics of Lophodermium from Pine

Ortiz-García, Sol; Gernandt, David S.; Stone, Jeffrey K.; Johnston, Peter R.; Chapela, Ignacio H.; Salas‐Lizana, Rodolfo; Álvarez-Buylla, Elena

doi:10.2307/3762013

Cited by 38 publications

(37 citation statements)

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“…rather than Abies spp. The Rhytismatalean species on Abies and Picea are distally related to species on Pinus (Ortiz- García et al 2003;Hou et al 2009). Therefore, we provisionally place irula exigua in Lirula and its systematic position needs to be confirmed by more molecular data of members in the Rhytismatales on needles of Abies and Picea.…”

Section: Discussionmentioning

confidence: 99%

Two species of Lirula on Abies from Yunnan, Southwest China

et al. 2011

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Based on a recent investigation of species of the Rhytismatales in the eastern Himalayas in China, two species of Lirula on Abies were found, one of which is described as a new species, Lirula yunnanensis, which differs from Lirula japonica mainly by ascomatal structure and conidiomatal features, while the other is Lirula exigua, a new record for China. An analysis of the combined sequences of ITS+LSU r DNA showed that Lirula macrospora and Lophodermium piceae were closely related and that Lirula yunnanensis and Lophodermium autumnale were grouped together. The genus of Lirula should be redefined based on more molecular data. Lirula exigua was distantly related to Lirula species and its systematic position has to be confirmed by further molecular data. A key for known species of Lirula worldwide is provided.

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Section: Discussionmentioning

confidence: 99%

Two species of Lirula on Abies from Yunnan, Southwest China

et al. 2011

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“…The ITS sequence analysis by Ortiz-García et al (2003) showed that Lophodermium species from needles of pines formed a monophyletic sister group to Lophodermium species from more distant hosts from the southern hemisphere, but not to L. piceae from Picea. The partial LSU sequence analysis by Hou (2004) indicated that species of Rhytismatales on needles of Picea and Abies are distantly related to species on needles of other coniferous species, including Cupressaceae and Taxodiaceae.…”

Section: Discussionmentioning

confidence: 99%

Lophodermium pini-mugonis sp. nov. on needles of Pinus mugo from the Alps based on morphological and molecular data

Hou

Piepenbring

2008

Mycol Progress

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Lophodermium pini-mugonis, collected on needles of Pinus mugo from German Alps, is described as a species new to science. It is characterized by subcuticular ascomata with a wrinkled surface and a somewhat untidy outline, a complex structure of lip cells, and ellipsoidal conidia. An analysis of the internal transcribed spaces of rDNA showed that Lophodermium pini-mugonis is, sister to Lophodermium autumnale and distantly related to other Lophodermium species on pines. The hypothesis of cospeciation of Lophodermium species with members of the Pinaceae is discussed.

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“…Saikkonen et al (2004) interpreted host-endophyte associations as mutual exploitation, while Schulz and Boyle (2005) interpreted them as balanced antagonism in which there is some degree of virulence on the part of the fungus and an active defense response. Ortiz-Garcia et al (2003) suggested that pathogenic species in Lophodermium were derived from endophytic predecessors, and Redman et al (1999) demonstrated that a pathogenic fungus, Colletotrichum magna, was rendered endophytic through gene disruption. Like Lophodermium, Cryptosporiopsis includes both pathogenic and endophytic species with differing invasive abilities.…”

Section: Discussionmentioning

confidence: 99%

Endomembrane system of aspen root cells plays a key role in defense against a common fungal root endophyte,Cryptosporiopsis radicicola

Tsuneda¹,

Wang

Tsuneda

et al. 2009

Mycologia

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The host-endophyte interaction between roots of aspen (Populus tremuloides) and Cryptosporiopsis radicicola was examined primarily by transmission electron microscopy. Hyphae growing on the exterior of the inoculated roots had a thick, electron-dense, adhesive sheath. At hyphal contact and penetration, host epidermal cells exhibited a series of defense responses (viz. formation of papillae and partition walls, general wall thickening and walling-off of internal hyphae). In papilla formation, loop-shaped, rough endoplasmic reticula (rER) gave rise to globose secretory vesicles that accumulated around and then fused to the developing papilla. Unlike papillae, general wall thickening was associated with the Golgi apparatus (GA) that produced cell wall materials; 1-3 layers of Golgi cisternae were in contact with or in the immediate proximity (mostly within 0-0.5 microm) of and lying parallel to the host cell wall, where they budded out numerous subglobose vesicles that fused directly to the host cell wall and made it thicker. Partition wall formation and walling-off of internal hyphae also were common; the former was associated with an extended single cisterna, which was indistinguishable from rER or individual cisternae of GA, and in the latter phenomenon internal hyphae were encased by electron-dense material containing numerous ribosomes and membranous elements that were derived apparently from proliferated rER. These pronounced defense responses protected the stele and contributed to making C. radicicola endophytic rather than pathogenic.

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Phylogenetics of Lophodermium from Pine

Cited by 38 publications

References 0 publications

Two species of Lirula on Abies from Yunnan, Southwest China

Two species of Lirula on Abies from Yunnan, Southwest China

Lophodermium pini-mugonis sp. nov. on needles of Pinus mugo from the Alps based on morphological and molecular data

Endomembrane system of aspen root cells plays a key role in defense against a common fungal root endophyte,Cryptosporiopsis radicicola

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