The effects of Fungi on the Gametophytes of Pteridium aquilinum (L.) Kühn

Hutchinson, S.A.; Fahim, M. M.

doi:10.1093/oxfordjournals.aob.a083593

Cited by 13 publications

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“…The method of raising agar cultures of Bracken prothalli in bulk will be found in various publications from the Glasgow department; e.g. Conway, 1949;Hutchinson and Fahim, 1957. It is sufficient to say here that cultures of any age from 6 weeks to 6 months are suitable provided that fertilizations have not occurred on such a scale as to crowd out the young prothalli by growth of sporophytes.…”

Section: Methodsmentioning

confidence: 99%

Observations on the Microanatomy of the Spermatozoid of the Bracken Fern (Pteridium aquilinum)

Manton

1959

The Journal of Cell Biology

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Salient features of structure of the spermatozoid of a fern (Pterldium aquilinum) have been determined by a combination of visual and ultraviolet microscopy, with electron microscopy of shadow-cast whole mounts and thin sections, using magnifications up to but not exceeding 50,000 diameters. Attention has been concentrated on the arrangement rather than on the internal details of the various parts. The most important component, apart from the spirally wound nucleus, numerous (about 40) cilia, and mitochondria, is a sheet of parallel fibres spirally wound near the surface of a cone of cytoplasm to which all the other major components are in various ways attached. The diameter of the individual fibres is of the order of 200 A. A few details are given of other minor cell constituents including additional mechanical materials, starch-containing leucoplasts, and the smaller cytoplasmic inclusions.

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Section: Methodsmentioning

confidence: 99%

Observations on the Microanatomy of the Spermatozoid of the Bracken Fern (Pteridium aquilinum)

Manton

1959

The Journal of Cell Biology

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“…Preuss (Ascomycota: Hypocreales) and Coniothyrium sp. Corda (Ascomycota: Leptosphaeria) (Hutchinson & Fahim 1958). Prothalli grown on mineral agar are potentially susceptible to attack from a wide variety of pathogens of higher plants.…”

Section: Reproductive Characteristicsmentioning

confidence: 99%

“…The disease caused by Botrytis cinerea Pers. (Ascomycota, Sclerotiniaceae) is similar to the disease in higher plants (Hutchinson & Fahim 1958). Generally the behaviour under fungal attack is similar to that in higher plants.…”

Section: Herbivory and Diseasementioning

confidence: 99%

Biological Flora of the British Isles: Pteridium aquilinum (L.) Kuhn

2006

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Summary1 This account reviews information on all aspects of the biology of bracken Pteridium (mainly aquilinum ssp. aquilinum) that are relevant to understanding its ecological characteristics and behaviour. The main topics are presented within the standard framework of the Biological Flora of the British Isles: distribution, habitat, communities, responses to biotic factors, responses to environment, structure and physiology, phenology, reproductive characters, herbivores and disease, history, and conservation. 2 Pteridium is a complex genus comprising a number of species, subspecies and varieties. The treatment here is based on a recent revision that incorporates both morphological and molecular data, and is related to its geographical distribution. 3 Pteridium is thought to be a woodland genus, but it can grow in the open. It is cosmopolitan and occurs on all continents except Antarctica. It responds to human disturbance and is often found in open spaces after forest clearance and cultivation. In some situations it can be a troublesome weed, causing problems for land managers. Moreover, its abundance and distribution in Britain are predicted to increase as a result of global climate change. 4 Pteridium aquilinum ssp. aquilinum, the most common taxon in the British Isles, occurs in many plant communities, and it is apparently limited by frost and waterlogging. Its abundance has probably increased in the relatively recent past as a result of changing land management, and this increase impinges on plant communities with a high conservation interest. The changed land management reflects changing use of agricultural land and also a reduction in the use of Pteridium as a resource. Accordingly, in many places Pteridium is viewed as a weed and management is needed to control it and restore more desirable vegetation. These management techniques are summarized.

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“…Effects of fungi on fern gametophytes have been recorded previously (Hutchinson and Fahim, 1958). Hutchinson (1967) found that growth of gametophytes of Pteridium aquilinum (L.) Kuhn was affected by volatile metabolites from cultures of several fungi, but no specific effects on gametophyte morphogenesis were described and the substances responsible were not identified.…”

Section: Introductionmentioning

confidence: 99%

THE EFFECTS OF FUNGI ON MORPHOGENESIS OF GAMETOPHYTES OF POLYPODIUM VULGARE L.

Smith¹,

Robinson²

1969

New Phytologist

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Growth and development of gametophytes of Polypodium vulgare L. in culture were affected by several fungi. Of those tested the fungus having the greatest effect was Fusarium oxysporum Schlecht ex Fr. When added just before spore germination this fungus delayed the transition from one-to two-dimensional growth of the gametophytes and when added after the transition had occurred it caused a reversion to one-dimensional growth. Analysis of culture filtrates showed that the detectable volatile substances present in greatest concentration were ethanol and acetaldehyde. Changes in gametophjrte morphology were correlated with changes in the level of ethanol present in the medium and the main effects of the fungus were reproduced by treating gametophytes in uncontaminated cultures with ethanol.

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The effects of Fungi on the Gametophytes of Pteridium aquilinum (L.) Kühn

Cited by 13 publications

References 0 publications

Observations on the Microanatomy of the Spermatozoid of the Bracken Fern (Pteridium aquilinum)

Observations on the Microanatomy of the Spermatozoid of the Bracken Fern (Pteridium aquilinum)

Biological Flora of the British Isles: Pteridium aquilinum (L.) Kuhn

THE EFFECTS OF FUNGI ON MORPHOGENESIS OF GAMETOPHYTES OF POLYPODIUM VULGARE L.

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