Novelties of Protomycetaceae in the Tatra Mts

Novelties of Protomycetaceae in the Tatra Mts

Polish Botanical Journal 53(2): 169–176, 2008 NOVELTIES OF PROTOMYCETACEAE IN THE TATRA MTS KAMILA BACIGÁLOVÁ, WIESŁAW MUŁENKO & AGATA WOŁCZAŃSKA Abstract. Two interesting species of Protomyces Unger collected recently in the Tatra Mts are described, illustrated in detail and compared with similar taxa. Protomyces crepidis-paludosae Büren on Crepis paludosa (L.) Moench is a new species for Slovakia. Protomyces macrosporus Unger on Laserpitium latifolium L. is a new fungus/host combination in the Carpathians. Protomyces macrosporus Unger on Carum carvi L. is reported from the fi rst locality in the Slovak part of the Tatra Mts. Key words: microfungi, biology, ecology, Carpathian Mts, Poland, Slovakia Kamila Bacigálová, Institute of Botany, Slovak Academy of Sciences, Dúbravská cesta 14, SK–84523 Bratislava, Slovakia; e-mail: [email protected] Wiesław Mułenko & Agata Wołczańska, Department of Botany and Mycology, Maria Curie-Skłodowska University, Akademicka 19, PL–20-033 Lublin, Poland; e-mail: [email protected] INTRODUCTION Species of the genus Protomyces Unger (Ascomy- MATERIAL AND METHODS cota, Taphrinales, Protomycetaceae) are obligate parasites of fl owering plants of the families Apiaceae For identifi cation of the species, both the visible symp- and Asteraceae. The mycelium of the Protomyces toms of the infected plant and the anatomical and mor- phological characteristics of the fungus were used. species invades the host tissues intercellularly and Transverse and longitudinal sections from naturally concentrates mainly around the vascular bundles. infected leaves or stems were observed in a drop of The fungus induces hypertrophy and hyperplasia of 50% lactic acid, and 100 ascogenous cells were meas- the infected tissues, and fi nally leads to the forma- ured by means of a Zeiss light microscope with micro- tion of distinct galls or swellings on stems, leaves, photography equipment. The text uses the following fl owers, fruits and other aboveground parts of host abbreviations: L – mean ascogenous cell length (μm), plants (Büren 1915, 1922). The Protomyces species W – mean ascogenous cell width (μm), Q – ratio of parasitize Apiaceae (e.g., Protomyces macrosporus mean ascogenous cell length and width (L/W ratio), Unger), and Asteraceae (e.g., Protomyces pachy- (n = x/y) x measurements of ascogenous cells from y specimens (Niemelä 1998). dermus Thüm on Taraxacum, Protomyces kriegeri- The collected material was deposited in the My- anus Büren on Leontodon, Protomyces buerenianus cological Herbarium of the Institute of Botany of the Buhr on Galinsoga, Protomyces cirsii-oleracei on Slovak Academy of Sciences, Bratislava (SAV) and the Cirsium). Most of them occur only in Europe. Ex- Herbarium of the Department of Botany and Mycology, ception are Protomyces macrosporus and P. pachy- Maria Curie-Skłodowska University, Lublin (LBL). dermus which are widespread (Büren 1922; Gjaerum 1964; Reddy & Kramer 1975; Sałata 1979). RESULTS AND DISCUSSION Here we describe, illustrate and discuss two in- teresting species of Protomyces found in the Tatra Protomyces crepidis-paludosae Büren Mts Biosphere Reserve: Protomyces crepidis-palu- Beitr. Kryptogamenfl . Schweiz 5(3): 58. 1922. dosae Büren, new for Slovakia, and Protomyces macrosporus Unger, collected on the rarely re- The fungus causes small (1–3 mm) swellings ported host plants Laserpitium latifolium L. and and galls along the main and lateral veins on living Carum carvi L. leaves of Crepis paludosa. Visual infection symp- 170 POLISH BOTANICAL JOURNAL 53(2). 2008 toms are recognizable as yellow, pale-brown to dark-brown, barely raised spots around small galls along the main leaf veins (Figs 1 & 2A). The septate mycelium is very thin, invades the leaf tissue intercellularly, and concentrates along the vascular tissue (Fig. 2B). The ascogenous cells are formed intercalarily as a bulge on the cell of the intercellular mycelium (Fig. 2C, D). They are spherical to roughly spherical, 37–68 × 28–52 μm (most frequently 46–52 × 43–46 μm); L = 49 μm, W = 43 μm, Q = 1.14 (n = 100/1) (Fig. 2E; Table 1). The ascogenous cell wall is three-layered and pale yellowish-brown. The exosporium and mes- osporium are smooth (Fig. 2F), and the endospo- rium often varies in thickness; altogether these three layers are 6.1 μm thick with short pedicle- like basal appendages (Fig. 2E, F). The mature ascus (vesicle) was not found. Fig. 1. Protomyces crepidis-paludosae Büren on Crepis palu- SPECIMENS EXAMINED. On Crepis paludosa (L.) dosa (L.) Moench (SAV): leaf spots and galls along small parts Moench: SLOVAKIA, Tatra National Park, Belianske of main vein on leaf of host plant. Tatry Mts, Monkova dolina valley surrounding the Ring- liarsky potok River, elev. ca 930 m, 27 July 2000 & 29 Mts is a new species for Slovakia. This species May 2005, leg. K. Bacigálová (SAV); Monkova dolina was previously found only in Germany, Switzer- valley, elev. ca 996 m, 14 July 2005, leg. W. Mułenko land (Büren 1922), Norway (Gjaerum 1964) and (LBL); Javorová dolina valley, elev. ca 1140 m, 20 July Poland (Sałata 1979; Sałata et al. 1984; Bacigálová 2005, leg. K. Bacigálová (SAV). et al. 2005). NOTES. Protomyces crepidis-paludosae on Protomyces crepidis-paludosae and other Pro- Crepis paludosa recorded in the Belianske Tatry tomyces species are distinguished on the basis of Table l. Comparison of ascogenous cell size in Protomyces crepidis-paludosae Büren on Crepis paludosa (L.) Moench in Europe. Ascogenous cell diameter Ascogenous cell wall Ascus Collections of P. crepidis-paludosae (μm) (μm) ‘vesicles’ [most frequent] Switzerland, Alps, elev. ca 1800 m 45 not published 60–75 × 50 (Büren 1922) Norway, elev. up to 750 m 20–55 2.5–6.0 not published (Gjaerum 1964) Poland, Sudety Mts 27–52 2.0–6.5 60–75 × 50 (Sałata 1979) [30–40] Tatra Mts 38–54 × 26–44 4–6 not observed (Sałata et al. 1984; Bacigálová et al. 2005) Slovakia, Belianske Tatry Mts, elev. ca 930 m 37–68 × 28–52 6.1 not observed and 1140 m, leg. K. Bacigálová (SAV) [46–52 × 43–46] K. BACIGÁLOVÁ ET AL.: NOVELTIES OF PROTOMYCETACEAE IN THE TATRA MTS 171 AB C D E F Fig. 2. Protomyces crepidis-paludosae Büren within leaves of Crepis paludosae (L.) Scop. (SAV). A – galls along leaf vein (scale bar = 1 mm), B – cross section of leaf, mycelium and formation of ascogenous cell along vascular tissue on upper side of leaf (scale bar = 50 μm), C & D – intercellular mycelium and young stages of ascogenous cells showing their apical position on mycelium (scale bar = 50 μm), E – young stages and mature ascogenous cells in in situ (scale bar = 20 μm), F – mature ascogenous cell – three-layered cell wall with short pedicle-like basal appendages (scale bar = 10 μm). 172 POLISH BOTANICAL JOURNAL 53(2). 2008 Taraxacum sp.) (Table 2), and their modes of for- mation also differ (Bacigálová 2004). Protomyces macrosporus Unger Die Exanth. der Pfl anzen: 344. 1833. Visual infection symptoms on Laserpitium lati- folium are recognizable as white-green to brown, large, hard galls or round callosities within the stem, leaves and fruits tissues (on leaves the galls Fig. 3. Protomyces macrosporus Unger on Laserpitium lati- are usually restricted to areas along the petiole, folium L. (SAV): leaf spots and galls along leaf vein of host plant. veins and veinlets) (Figs 3 & 4A). On Carum carvi the fungus causes brown-orange galls on stems macroscopic symptomatological characteristics and leaves (Fig. 5A). and the size of ascogenous cells, according to the The thick septate mycelium invades the leaf methods used by Büren (1915, 1922) and Sałata tissue intercellularly and concentrates along the (1979). The morphological variability and the size vascular tissue. The ascogenous cells are formed of ascogenous cells in P. pachydermus Thüm., intercalarily on the intercellular mycelium (Figs P. cirsii-oleracei Buhr, P. kriegerianus Büren and 4B–D & 5B). On Laserpitium latifolium they are other species parasitizing Asteraceae led Reddy spherical to roughly spherical, 46–83 × 40–68 μm and Kramer (1975) to synonimize all these taxa (most frequently 59–62 × 55–59 μm); L = 61, with P. pachydermus. Our observations do not sup- W = 54, Q = 1.13 (n = 109/1) (Fig. 4E, F). On port Reddy and Kramer’s (1975) conclusions. As- Carum carvi they are spherical, 37–71 × 31–62 cogenous cells of Protomyces crepidis-paludosae μm (most frequently 46–52 × 43–46 μm); L = 50, (on Crepis), P. kriegerianus (on Leontodon and W = 45.5, Q = 1.10, (n = 100/1) (Fig. 5C, D). The Hypochoeris), P. cirsii-oleracei (on Cirsium) differ wall of the ascogenous cell is three-layered and from the ascogenous cells of P. pachydermus (on pale yellowish-brown. On Laserpitium latifolium Table 2. Comparison of ascogenous cell size in some Protomyces species associated with Asteraceae. Asco- Ascogenous cell L W genous Species Host plant and locality diameter (μm) Q (μm) (μm) cell wall [most frequent] (μm) Crepis paludosa, Slovakia, 37–68 × 28–52 P. crepidis-paludosae 49 43 1.14 6.1 Belianske Tatry Mts [46–52 × 46–46] Taraxacum tatrense R. Doll, 26–53 × 16–44 P. pachydermus* 37 33 1.12 3.1 Slovakia, Vysoké Tatry Mts [31–42 × 31–39] Taraxacum offi cinale Weber agg., 25–42 × 23–39 P. pachydermus* Slovakia, Bratislava, Institute of 34 30 1.12 3.1 [31–36 × 28–31] Botany Leontodon hispidus L., Slovakia, 34–47 × 28–45 P. kriegerianus* 40 37 1.07 4.7 Bratislava, Institute of Botany [39–42 × 36–39] Leontodon hispidus L., Slovakia, 28–50 × 25–47 P. kriegerianus* 43 39 1.09 4.7 Selenecká dolina valley [39–47 × 39–44] Cirsium oleraceum (L.) Scop., 30–45 × 24–45 P. cirsii-oleracei* 36.5 35 1.04 4.7 Poland, Białowieża National Park [36–39 × 31–39] * – in Bacigálová et al. 2005 K. BACIGÁLOVÁ ET AL.: NOVELTIES OF PROTOMYCETACEAE IN THE TATRA MTS 173 AB C D E F Fig.

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