Diversity of Phytophthora Species Involved in New Diseases of Mountain Vegetation in Europe with the Description of Phytophthora pseudogregata sp. nov.

被引：8

作者：

Bregant, Carlo ^{[1
]}

Rossetto, Giovanni ^{[1
]}

Meli, Letizia ^{[1
]}

Sasso, Nicolo ^{[1
]}

Montecchio, Lucio ^{[1
]}

Brglez, Ana ^{[2
]}

Piskur, Barbara ^{[2
]}

Ogris, Nikica ^{[2
]}

Maddau, Lucia ^{[3
]}

Linaldeddu, Benedetto Teodoro ^{[1
]}

机构：

[1] Univ Padua, Dipartimento Terr & Sistemi Agroforestali, Viale Univ 16, I-35020 Legnaro, Italy

[2] Slovenian Forestry Inst, Dept Forest Protect, Vecna Pot 2, Ljubljana 1000, Slovenia

[3] Univ Sassari, Dipartimento Agr, Viale Italia 39, I-07100 Sassari, Italy

来源：

FORESTS | 2023年 / 14卷 / 08期

关键词：

alpine regions; emerging disease; oomycetes; foliar necrosis; ITS clade 6; phylogeny; 1ST REPORT; VIBURNUM-TINUS; FRUIT ROT; PSEUDOSYRINGAE; RHODODENDRON; HEDRAIANDRA; MULTIPLE; CACTORUM; ROOT; LEAF;

D O I：

10.3390/f14081515

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

New and emerging Phytophthora-related diseases in small trees, shrubs and herbaceous plants typical of subalpine vegetation have recently been observed in Italy and Slovenia. Diseased plants showed a complex symptomatology including foliar necrosis, fruit rot, shoot blight and branch bleeding cankers. Since little information is available about the aetiology of these aerial Phytophthora diseases, from 2019 to 2022, field surveys were conducted in 54 sites to define the occurrence, distribution and impact of the Phytophthora species on mountain vegetation. A total of 360 Phytophthora isolates were obtained from 397 samples collected from 33 herbaceous and woody host species. Based on phylogenetic analysis and morphometric data, 17 Phytophthora species were identified: P. pseudosyringae (201 isolates), P. plurivora (54), P. gonapodyides (21), P. ilicis (20), P. alpina (17), P. acerina (11), P. cactorum (7), P. pseudocryptogea (6), P. cambivora (5), P. idaei (4), P. psychrophila (3), P. bilorbang (2), P. chlamydospora (2), P. hedraiandra (1), P. kelmanii (1), P. rosacearum (1) and P. syringae (1). In addition, three isolates of a new putative Phytophthora species obtained from Alnus viridis, Juniperus communis and Rhododendron ferrugineum are described here as Phytophthora pseudogregata sp. nov. Overall, the results highlighted an unexpectedly high diversity of Phytophthora species in mountain areas, with many species able to cause aerial infections due to the production of caducous sporangia.

引用

页数：24

共 83 条

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