BioImages (UK)
BIOTA
(living things)
Eukaryota
(eukaryotes)
MYCETEAE
(fungi, moulds and lichens)
ASCOMYCOTA
(spore-shooters)
ASCOMYCETES
(spore shooters)
DOTHIDEOMYCETIDAE
(a subclass of ascomycetes)
MYCOSPHAERELLACEAE
(a family of ascomycetes and lichens)
Mycosphaerella
(a genus of ascomycetes)
Mycosphaerella brassicicola
(an ascomycete)
Record
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BioImages: The Virtual Field-Guide (UK)

Mycosphaerella brassicicola (Fr. & Duby) Lindau, 1897 (an ascomycete)

Date: 7 April 2007
Location: South Hampshire, England
Voucher: 07/04/2007[A]
(Please quote this in any queries about this record)
State: Imperfect stage
Record Summary: Leaf spots on fading and attached dead leaves of Broccoli
Associated organism: on dead or fading leaf of Brassica oleracea var. italica
Identification Notes: Fading leaves with large grey zonate leaf spots up to 20mm diam surrounded by a yellow zone with the central 10mm populated with abundant mainly epiphyllous black pycnidia, often leaving a white spot in the centre of the leaf spot.

Attached dead leaves with similar spots which are more obviously zonate.

Pycnidia: grey under microscope, 0.2-0.3mm diam. immersed, but bulging, with a small black ostiole. Conidia: hyaline, 3-5/1.3µm.

Pseudothecia: similar, containing unripe septate ascospores.

Images etc

naked eye photograph Infected dead leaves - grey background 500 by 372 pixels
naked eye photograph Infected fading leaves - top views - grey background 500 by 449 pixels
naked eye photograph Infected fading leaves - under sides - grey background 500 by 470 pixels
naked eye photograph Infection spot - dead leaf - top surface - enlarged Good 500 by 333 pixels
naked eye photograph Infection spot - dead leaf - top surface - enlarged Good 500 by 333 pixels
naked eye photograph Infection spot - dead leaf - top surface - enlarged 500 by 333 pixels
naked eye photograph Infection spot - dead leaf - top surface - highly enlarged 500 by 451 pixels
naked eye photograph Infection spot - fading leaf - top surface - enlarged 500 by 399 pixels
naked eye photograph Infection spot - fading leaf - top surface - enlarged Good 500 by 371 pixels
naked eye photograph Infection spot - fading leaf - top surface - enlarged 500 by 404 pixels
naked eye photograph Infection spot - fading leaf - under surface - enlarged 500 by 333 pixels
naked eye photograph Infection spots - fading leaf - top surface - close-up 500 by 333 pixels
naked eye photograph Infection spots - fading leaf - top surface Good 500 by 333 pixels
naked eye photograph Infection spots - fading leaf - under surface - close-up Good 500 by 333 pixels
magnified photograph Pseudothecia on dead leaf - magnified 500 by 359 pixels
magnified photograph Pseudothecia on dead leaf - magnified 500 by 464 pixels
magnified photograph Pseudothecia on dead leaf - magnified 500 by 424 pixels
magnified photograph Pseudothecia on dead leaf - magnified 500 by 333 pixels
magnified photograph Pseudothecia on dead leaf - magnified Good 500 by 271 pixels
magnified photograph Pseudothecia on dead leaf - magnified 500 by 333 pixels
magnified photograph Pycnidia on fading leaf - magnified 500 by 333 pixels
magnified photograph Pycnidia on fading leaf - magnified 500 by 434 pixels
microscope photograph Ostiole - magnified Good 500 by 333 pixels
microscope photograph Pseudothecium squash showing asci with septate ascospores - magnified 500 by 328 pixels
microscope photograph Pycnidium contents (in squash prep) - highly magnified 395 by 500 pixels

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