Puccinia marrubii Kabakt., Mutlu, Karakuş & Akata, 2016

Kabaktepe, Şanli, Mutlu, Birol, Karakuş, Şükrü & Akata, Ilgaz, 2016, Puccinia marrubii (Pucciniaceae), a new rust species on Marrubium globosum subsp. globosum from Niğde and Malatya in Turkey, Phytotaxa 272 (4), pp. 277-286 : 281-284

Puccinia marrubii Kabakt., Mutlu, Karakuş & Akata , spec. nov. ( Figs. 1–3 )

MycoBank: MB 816924

Puccinia marrubii differs from P. serpylli Lindr. (1904: 10) , P. malvacearum Bertero ex Mont. (1852: 43) , P. salviae Unger (1836: 218) and P. annularis (F. Strauss) G. Winter (1884: 165) by the colour of the teliospore wall by possessing both mesospores and 3–4 celled teliospores and by its DNA phylogeny (for more detail, see Table 2).

Holotype: — TURKEY. Niğde: Çamardı, Emli Valley, 1800–2000 m, on Marrubium globosum subsp. globosum Montbret & Aucher ex Benth. ( Lamiaceae ), 25 June 2015, Ş.Kabaktepe 8121 ( INU 12569-2016).

Paratypes: — TURKEY. Niğde: Çamardı, Emli Valley, 1900–2200 m, 6 October 2015, Ş.Kabaktepe 8430 ( INU 12570-2016). Malatya:Akçadağ, Bölüklü Village, Koru Mountain, steppe, 2000 m, 8 June 2013, Ş.Karakuş 4295 ( INU 12568-2016).

Etymology: —The epithet refers to the host genus, Marrubium .

Spermogonia, aecia and uredinia absent. Telia amphigenous scattered or in group, 0.2–2 mm diameter, causing leaf deformation, elongated on petioles up to 7 mm long, covered by the epidermis, blackish. Teliospores 2 rarely 3 or 4 cells, 42–65× 16–26 μm, ellipsoid, oblong, rarely clavoid, rounded at both ends, sometimes straight at apex, sometimes attenuated at base, constricted at septum, pore at apex in upper cell, equatorial in the lower cell, wall cinnamon brown, 1–2 μm thick at sides, up to 8 μm at apex, smooth, pedicel hyaline, persistent, up to 110 μm long. Mesospores ellipsoid, 38–56 × 16–24 μm, wall cinnamon brown, 1–2 μm thick at sides, up to 6 μm at apex, smooth, Basidia not seen.

Figures

FIGURE 1. Puccinia marrubii sp. nov.on Marrubium globosum subsp. globosum. A.Type specimen (in herbarium INU).B.Telia on upper surface of leaf. C.Telia on petiole.

FIGURE 2. Light microscope photographs of Puccinia marrubii sp. nov. (Ş.Kabaktepe 8430). A. Cross-section of telium. B. Mesospore. C. Teliospores. D. Four-celled teliospore.

FIGURE 3. SEM photographs of Puccinia marrubii sp. nov. (Ş.Kabaktepe 8430). A. Outer surface of telium on stem. B. Cross-section of telium. C. Teliospore. D. Teliospore wall surface. E. Mesospore.