Teaching techniques for mycology: 15. Fertilization and apothecium development in Pyronema domesticum and Ascobolus furfuraceus (Pezizales)

Webster, John; Weber, Roland W.S.

doi:10.1016/s0269-915x(01)80035-5

Cited by 3 publications

(3 citation statements)

References 17 publications

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“…3), which were similar to those of ascospores immediately after release from pseudothecia (Huang et al, 2001). However, the decrease in viability of ascospores of A-group and B-group L. maculans over 35 days was greater than that of ascospores of Sclerotinia sclerotiorum (Clarkson et al, 2001) or Ascobolus furfuraceus (Webster & Weber, 2001); this difference may have occurred because the ascospores were exposed to different conditions. Nevertheless, during autumn and winter in the UK when the ascospores are initiating phoma leaf spots, it is unlikely that there will be 35 days without rain or dew.…”

Section: Discussionmentioning

confidence: 67%

“…Ungerminated fungal ascospores can be very resistant to unfavourable conditions. Ascospores of Ascobolus furfuraceus discharged into the base of a Petri dish remained viable for several months at 4°C (Webster & Weber, 2001). When ascospores of Sclerotinia sclerotiorum were exposed to 58% r.h., 50% survived after 13 wk at 25°C and there was no decrease in viability after 13 wk at 5-10°C (Clarkson et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

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Survival of A‐group and B‐group Leptosphaeria maculans (phoma stem canker) ascospores in air and mycelium on oilseed rape stem debris

Huang

Fitt

Hall

2003

Annals of Applied Biology

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Mycelium of Leptosphaeria maculans survived on oilseed rape stem base debris buried in sand for 2, 4, 6, 8, 10 or 12 months and produced pseudothecia after subsequent exposure on the surface of the ground under natural conditions for 2-4 months, but did not survive on upper stem debris buried for 2 months. Only A-group L. maculans ascospores were produced on the stem base debris which had been buried; no B-group ascospores were produced. Mycelium of L. maculans survived on both stem base and upper stem debris exposed on the sand surface for 2, 4, 6, 8, 10 or 12 months and pseudothecia with viable ascospores were observed at the time of sampling. Both A-group L. maculans (predominant on stem bases) and B-group L. maculans (predominant on upper stems) ascospores were produced on unburied stem base and upper stem debris. Thus B-group L. maculans survived longer on unburied debris than on buried debris. A-group ascospores which were exposed in dry air in darkness at 5-20degreesC survived longer than B-group ascospores; 10-37% of A-group ascospores, compared with 2-31% of B-group ascospores, survived after 35 days

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Section: Discussionmentioning

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Survival of A‐group and B‐group Leptosphaeria maculans (phoma stem canker) ascospores in air and mycelium on oilseed rape stem debris

Huang

Fitt

Hall

2003

Annals of Applied Biology

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“…Pure cultures were obtained from some specimens following the method provided by Webster and Weber (2001) and preserved in the State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences.…”

Section: Methodsmentioning

confidence: 99%

Three new species of Dicephalospora from China as revealed by morphological and molecular evidences

Zheng¹,

Zhuang²

2019

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Three new species of Dicephalospora are introduced based on morphological characters and DNA sequence analyses (maximum parsimony and neighbor-joining methods), viz. D.albolutea, D.shennongjiana, and D.yunnanica. All of them lack mucilaginous caps at ascospore poles. Dicephalosporaalbolutea is distinguished by cream to yellowish white apothecia and slightly curved ascospores. Dicephalosporashennongjiana is characterized by yellow apothecia, elliptical-fusoid ascospores 19−22 × 7−8.8 μm, and J+ asci 130−150 × 14−16.5 μm. Dicephalosporayunnanica is distinguished by orange apothecia and fusoid ascospores 16.5−25.3 × 3.3−3.5 μm. Descriptions and illustrations of the new species as well as a key to the known species in the genus are provided.

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John Webster: publications 1951-2004

Hawksworth¹

2005

Mycological Research

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Teaching techniques for mycology: 15. Fertilization and apothecium development in Pyronema domesticum and Ascobolus furfuraceus (Pezizales)

Cited by 3 publications

References 17 publications

Survival of A‐group and B‐group Leptosphaeria maculans (phoma stem canker) ascospores in air and mycelium on oilseed rape stem debris

Survival of A‐group and B‐group Leptosphaeria maculans (phoma stem canker) ascospores in air and mycelium on oilseed rape stem debris

Three new species of Dicephalospora from China as revealed by morphological and molecular evidences

John Webster: publications 1951-2004

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