ILLUSTRATED LIFE-CYCLE OF SPONGOSPORA SUBTERRANEA F.SP. SUBTERRANEA
AVAILABLE IN DIGITAL QUALITY




A series of DIGITAL photographs and micrographs (stereo/light/electron microscope) or individual ones can be ordered. The complete collection consists of total 18 pictures. It will help you to make your lectures more interesting and comprehensive. Or to brush-up your talks.

Numbered thumbnails are shown below.


young tuber with lesions

1
mature tuber with typical lesions

2
typical powdery scab lesion

3
EM micrograph of lesion

4
EM micrograph of spore ball

5
Broken (open) spore ball

6
potato root system with galls

7
single potato root with galls

8
gall with powdery mass

9
single spores with exit pores

10
primary zoospore (EM)

11
insertion sites of flagella (EM)

12
encysted zoospore with one-nucleus plasmodia

13
root hairs with young plasmodia

14
root epidermal cells with zoosporangia

15
zoosporangium with emerging zoospores

16
secondary zoospore

17
root hairs with empty zoosporangia

18



Legends:

1: Young tuber with lesions in the early "cauliflower" stage
2: Tuber with typical powdery scab symptoms
3: A single lesion showing the powdery mass of resting spores (spore balls) inside and the remnants of the broken epidermis at the edge of the lesion
4: EM-micrograph of spore balls in a lesion
5: A spore ball (sporosorus) consisting of numerous single spores
6: A broken spore ball showing the hollows and channels inside

7: A root system of a potato plant (stem cutting) with root galls
8: A closer look to a piece of potato root with galls
9: A broken gall with the powdery mass of spore balls
10: A part of a resting spore ball showing single spores with an exit pores
11: A heterocont biflagellated primary zoospore
12: The two flagella are laterally inserted at an angle of about 180 degree to each other and show a bulging basal ring at the postitions of insertion

13: Tomato root hair with an encysted zoospore and the first postinfection stage, a one-nucleus plasmodium
14: Root hairs with stained young plasmodia
15: Tomato root epidermal cells with zoosporangia of different development stages
16: A video-captured image showing a mature zoosporangium with emerging secondary zoospores
17: A secondary zoospore. Primary and secondary zoospores are similar in morphology
18: Tomato plant root hairs with empty zoosporangia


Ordering informations

A complete DIGITAL picture set on a CD will include:

The price is (shipping with delivery in 2 to 3 weeks included):

Choose between three methods of payment: If you want to ORDER, please send an e-mail to

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Last update: November 2022