The Septal Pores of Copfinus Lagopus in Relation to Nuclear Migration

Giesy, Robert M.; Day, Peter

doi:10.1002/j.1537-2197.1965.tb06787.x

Cited by 72 publications

(3 citation statements)

References 12 publications

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“…This may indicate that little shrinkage occurred in the cross wall. Several workers have discussed the possible function of the septal pore apparatus (Moore and McAlear 1962;Giesy and Day 1965;Bracker and Butler 1963;Wilsenach and Kessel 1965). Its function remains unclear.…”

Section: Discussionmentioning

confidence: 98%

“…Also, types other than the "Polyporus-type" have been found in Polyporus sensu lato. Thus, type one, with a few large pores in the cap, is represented by R. solarzi; representatives of type two, with small regular pores, include P. laternarginata, S. rugosa annulata (Thielke 1972), Polystictus versicolor (Girbardt 1961), Polyporus rugulosus (Wilsenach and Kessel 1965), Armillaria mellea (Berliner and Duff 1965), Lenzites saepiaria (Hyde and Walkinshaw 1966), Agaricus bisporus (Manocha 1965 ;Thielke 1972), Coprinus lagopus (Giesy and Day 1965), Scllizophyllum commune (Jersild et al 1967), and Calvatia sp. (Beneke 1963); and type three, with an apparently continuous pore cap, by P. tomentosus and Exidia glandulosa (Raper and Flexer 1971).…”

Section: Discussionmentioning

confidence: 99%

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Fine structure of the septal pore apparatus in Polyporus tomentosus, Poria latemarginata, and Rhizoctonia solani

Setliff¹,

MacDonald²,

Patton³

1972

Can. J. Bot.

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The septal pore apparatus was studied in Poria latemarginata, Polyporus tomentosus, and Rhizoctonia solani. Fixation by potassium permanganate was compared with fixation by glutaraldehyde – osmium tetroxide. Potassium permanganate reduced the size of the septal swelling about 50% and destroyed much of the internal integrity of the septal swelling. In glutaraldehyde – osmium tetroxide fixed material, a fibrillar network extended from the cross wall throughout the septal swelling. Except for this network, the septal swelling was electron transparent and similar in appearance to a vacuole. A rim of electronopaque material, attached to the septal swelling, surrounded the pore mouth in Polyporus tomentosus and Rhizoctonia solani.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Fine structure of the septal pore apparatus in Polyporus tomentosus, Poria latemarginata, and Rhizoctonia solani

Setliff¹,

MacDonald²,

Patton³

1972

Can. J. Bot.

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“…In the common-A mating, with the same A but different B mating-type genes (A = B =), the migration hyphae contained empty compartments, red and green nuclei next to each other, but very few nuclei expressing both mCherry and EGFP. From the occurrence of red and green nuclei in the same hyphal compartment, it can be deduced that nuclear movement and septal dissolution took place, as is known to happen in matings with different B mating-type genes and in the haploid B mutant, Bon strain [2,15,16,25]. The small number of nuclei expressing both mCherry and EGFP suggests that nuclear divisions are rare in hyphae with the same A but different B mating-type genes.…”

Section: Discussionmentioning

confidence: 99%

Nuclear-Localized Fluorescent Proteins Enable Visualization of Nuclear Behavior in the Basidiomycete Schizophyllum commune Early Mating Interactions

Raudaskoski,

Butler-Hallissey

2023

JoF

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Spinning disc confocal microscopical research was conducted on living mating hyphae of the tetrapolar basidiomycete Schizophyllum commune. Haploid strains with either the same or different A and B mating-type genes and expressing differently labelled histone 2B were confronted. In the haploid hyphae histone 2B mCherry and histone 2B EGFP were visualized as red and green nuclei, respectively. In hyphae with the same A but different B genes, the red and green nuclei were observed next to each other. This indicated that nuclear migration between strains, regulated by the B mating type, had taken place. The compatible mating with different A and B genes produced a high number of mixed EFGP/mCherry, yellow nuclei. The mixed nuclei resulted from nearby divisions of nuclei encoding different histones and mating-type genes. During this process, the histones with the different labels were incorporated in the same nuclei, along with the heterodimerized transcription factors encoded by the different A mating-type genes and present around the nuclei. This led to the activation of the A-regulated pathway and indicated that different A genes are important to the cell cycle activation of a compatible mating. Consequently, a yellow nuclear pair stuck together, divided synchronously and proceeded in the migration hyphae towards the colony periphery, where the dikaryotization was promoted by branch formation from the migration hyphae.

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Septal Pores in the Heterobasidiomycetidae, Puccinia Graminis and P. Recondita

Ehrlich

Schafer

1968

American J of Botany

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The septal pores in uredial mycelium of Puccinia graminis and P. recondita lack the septal swelling and septal pore cap (dolipore‐parenthosome configuration) typically associated with the pores of previously investigated Homobasidiomycetidae and the Tremellales among the Heterobasidiomycetidae. The pores in young hyphae of these two species of Puccinia are characterized by the presence of a cytoplasmic matrix which apparently occludes the pore and acts as a plug, thus preventing the migration of organelles from cell to cell. Large vesicles are typically present at the periphery of the pore matrix and the matrix may be very incompletely bounded by a membrane. Nuclei and other cytoplasmic structures migrate from cell to cell through an opening in the septum lateral to the pore. The available evidence indicates that this peripheral gap in the septum results from a breakdown of a portion of an initially complete septum rather than from incomplete septum formation. In addition to the centripetally formed septa, the hyphae of P. graminis and P. recondita are further compartmentalized by shallow infoldings of the lateral wall and limited unilateral septum formation. There is apparent free passage of cellular material between adjacent compartments.

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The Septal Pores of Copfinus Lagopus in Relation to Nuclear Migration

Cited by 72 publications

References 12 publications

Fine structure of the septal pore apparatus in Polyporus tomentosus, Poria latemarginata, and Rhizoctonia solani

Fine structure of the septal pore apparatus in Polyporus tomentosus, Poria latemarginata, and Rhizoctonia solani

Nuclear-Localized Fluorescent Proteins Enable Visualization of Nuclear Behavior in the Basidiomycete Schizophyllum commune Early Mating Interactions

Septal Pores in the Heterobasidiomycetidae, Puccinia Graminis and P. Recondita

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