Alternaria vignae sp. nov. (Ascomycota: Pleosporaceae) from Vigna unguiculata in China Author Huang, Cheng Xin 0000-0001-7770-5242 Department of Plant Protection, College of Agriculture, Yangtze University, Jingzhou 434025, China & Forewarning and Management of Agricultural and Forestry Pests, Hubei Engineering Technology Center, Yangtze University, Jingzhou 434025, China & chengxinhuang @ outlook. com; https: // orcid. org / 0000 - 0001 - 7770 - 5242 chengxinhuang@outlook.com Author Liu, Feng Yin 0000-0003-3114-603X Department of Plant Protection, College of Agriculture, Yangtze University, Jingzhou 434025, China & Forewarning and Management of Agricultural and Forestry Pests, Hubei Engineering Technology Center, Yangtze University, Jingzhou 434025, China & 2314220882 @ qq. com; https: // orcid. org / 0000 - 0003 - 3114 - 603 X 2314220882@qq.com Author Gou, Ya Nan 0000-0002-9805-1257 Department of Plant Protection, College of Agriculture, Yangtze University, Jingzhou 434025, China & Forewarning and Management of Agricultural and Forestry Pests, Hubei Engineering Technology Center, Yangtze University, Jingzhou 434025, China & 1157906791 @ qq. com; https: // orcid. org / 0000 - 0002 - 9805 - 1257 1157906791@qq.com Author Deng, Jian Xin 0000-0001-7304-5603 Department of Plant Protection, College of Agriculture, Yangtze University, Jingzhou 434025, China & Forewarning and Management of Agricultural and Forestry Pests, Hubei Engineering Technology Center, Yangtze University, Jingzhou 434025, China & djxin 555 @ yangtzeu. edu. cn; https: // orcid. org / 0000 - 0001 - 7304 - 5603 djxin555@yangtzeu.edu.cn Author Li, Mei Jia 0000-0001-6324-2515 Institute of Special Wild Economic Animals and Plants, Chinese Academy of Agriculture Sciences, Changchun 130112, China & 282737690 @ qq. com; https: // orcid. org / 0000 - 0001 - 6324 - 2515 282737690@qq.com text Phytotaxa 2022 2022-08-08 556 3 281 290 http://dx.doi.org/10.11646/phytotaxa.556.3.4 journal article 116581 10.11646/phytotaxa.556.3.4 f1d9f25b-e0fa-41d2-ac73-33df017d719a 1179-3163 6972874 Alternaria vignae C. X. Huang & J. X. Deng sp. nov. Fig. 2b–j MycoBank: 843124 Type— China , the Inner Mongolia Autonomous Region , Hohhot City , the farm of Inner Mongolia Agricultural University, from leaves of Vigna unguiculata , 20 Aug, 2017, J. X. Deng , YZU-H-009 ( holotype ), ex-type culture YZU 171714 . Etymology:—In reference to the host genus name, Vigna unguiculata FIGURE 2. Alternaria vignae (YZU 171714, ex-type). a: samples; b: colony on PDA for 7 days at 25 ˚C; c–d: sporulation patterns on PCA; e–f: conidiophores; g–i: conidia on PCA; j–l: conidia on V8A. Scale bars: c-l=25 μm. Descriptions:— Colony on PDA, light yellow in the center, white at the edge, hyphae flocculent, sulfur yellow to pure yellow in reverse, 39-47 mm in diam. after 7 days at 25 °C in darkness ( Fig. 2b ). Conidiophores smooth, straight or curved, 42-130 × 4-6 μm in size, with 2-9 transverse septa. Conidiogenous cells clavate, slightly enlarged at apex, 6-19 × 4-6 μm, sometimes branched to produce another conidium ( Fig. 2 e-f). Conidia usually solitary or in a chain with two units ( Fig. 2 c-d). On V8A, beakless conidia long elliptical body, with a size range of 46-67 × 13-17 μm, 5-8 transverse septa and 1-2 longitudinal septa; short blunted beak (16-94 × 2-4 μm) conidia obclavate and narrow-to broad-ellipsoid, with a size range of 45-76 × 12-20 μm, 5-8 transverse septa and 1-2 longitudinal septa; long filiform beak (100-150 × 2-3 μm) conidia with, a size range of 53-63 × 15-18 μm, 6-8 transverse septa and 1-3 longitudinal septa ( Fig. 2 j-l). On PCA, beakless conidia , 43-94 × 15-31 μm in size, with 4-8 transverse septa and 0-4 longitudinal septa; short blunted beak (13-96 × 2-4 μm) conidia , 50-75 × 14-32 μm in size, with 5-8 transverse septa and 0-5 longitudinal septa; long filiform beak (114-324 × 2-4 μm) conidia , 49-83 × 15-30 μm in size, with 5-9 transverse septa and 1-5 longitudinal septa ( Fig. 2 g-i). Materials examined:— China , the Inner Mongolia Autonomous Region , Hohhot City , the farm of Inner Mongolia Agricultural University , from leaves of Vigna unguiculata , 20 Aug , 2017, J . X. Deng , YZU-H-009 ( holotype ), ex-type culture YZU 171714 , living cultures YZU 171715 . Notes:—Morphologically, it is quite similar to A. helianthiinficiens based on conidial morphology ( Table 2 ). The new species produces shorter filiform beak than A. helianthiinficiens on V8A. Except that, there are few conidial evidences to indicate that it is a new species. However, Alternaria vignae can be readily separated with A. helianthiinficiens based on the multigene sequence analyses of ITS, GAPDH , RPB2 and TEF1 .