Diversity of Culturable Endophytes and Rhizosphere Fungi of Volvariella brumalis
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摘要:
目的 明确冬小包脚菇菌基土壤真菌和可培养内生真菌组成情况,为冬小包脚菇子实体分离及栽培奠定基础。 方法 以野生冬小包脚菇子实体及其菌基土壤为研究对象,采用传统组织分离法对子实体进行分离、纯化及ITS测序鉴定,并结合高通量测序法对菌基土壤真菌进行测序。 结果 分离得到的冬小包脚菇纯菌株属于Volvopluteus类群,也可属于传统定义的Volvariella类群。共得到冬小包脚菇内生真菌菌株50个,分属为3门13科16属20种,另有未定义科2个菌株,分别属于2个属,其中镰刀菌属(Fusarium)和毛霉属(Mucor)为优势属,且冬小包脚菇子实体内生真菌Shannon-Wiener多样性指数(H)为2.45,Simpson指数(D)为0.88,均匀度指数Pielou(J)为0.88,Margalef丰富度指数(R)为3.83。而冬小包脚菇菌基土壤中共检测到平均样品序列数67 919个,鉴定出276种土壤真菌,归属于10门131科213属,优势属为被孢霉属(Mortierella)、瓶毛壳属(Lophotrichus)、假散囊菌属(Pseudeurotium)、Pseudaleuria和两个未定义属unclassified_o_Sordariales、unclassified_c_Sordariomycetes。3个土样平均Ace指数达298.7,Shannon指数达3.53,Simpson指数为0.08,Chao 指数为304.23。 结论 冬小包脚菇可培养内生真菌和菌基土壤真菌都具有较为丰富的物种组成,该结论对冬小包脚菇菌种分离、培养、病虫害防治等栽培要点提供一定理论指导。 Abstract:Objective To promote the cold climate, specialty mushrooms in Guizhou, Volvariella brumalis as an ideal fill-in of the popular straw mushroom, V. volvacea, for wintertime market, the culturable endophytes and rhizosphere fungi associated with it were isolated and investigated to aid the cultivation. Methods Specimens from the fruiting bodies and rhizosphere soil of V. brumalis in the wild were collected. Endophytes in the fruiting bodies were isolated, cultured, and identified by ITS sequencing using the traditional tissue separation method, and fungal community in the rhizosphere soil analyzed by high-throughput sequencing. Results The 50 isolated endophytic strains were Volvopluteus, or the traditionally defined Volvariella, genera. They belonged to 3 phyla, 13 families, 16 genera (two of undefined families), and 20 species. Among them, Fusarium and Mucor were the dominant genera. The fungal Shannon-Wiener diversity index was 2.45, the Simpson index 0.88, the evenness index Pielou 0.88, and the Margalef richness index 3.83. In the rhizosphere soil, 67 919 sequences were detected with 276 kinds of fungi that belonged to 10 phyla, 131 families, and 213 genera. The dominant genera included Mortierella, Lophotricus, Pseudeurotium, Pseudaleuria, unclassified_o_Sordariales, and unclassified_c_Sordariomycetes. The Ace indices of 3 soil samples averaged 298.7, the Shannon indices 3.53, the Simpson indices 0.08, and the Chao indices 304.23. Conclusion Both the culturable endophytes and the rhizosphere fungi of V. brumalis were relatively rich in diversity. The information obtained would facilitate further research on the isolation, cultivation, and pest control of the mushroom for potentially valuable marketing in winter. -
Key words:
- Volvariella brumalis /
- identification /
- endophytic fungi /
- rhizosphere soil /
- fungal diversity
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表 1 冬小包脚菇可培养内生真菌菌群组成
Table 1. Composition of culturable endophytes in V. brumalis
门 Phylum 科 Family 属 Genus 菌株数
Number of strains相对丰度
Relative abundance/%相似种
Similar species菌株数
Number of strains担子菌门
Basidomycota原毛平革菌科
Phanerochaetaceae烟管菌属
Bjerkandera3 6.00 烟管菌
Bjerkandera adusta3 球盖菇科
Strophariaceae球盖菇属
Stropharia4 8.00 大球盖菇
Stropharia rugosoannulata4 皱孔菌科
Meruliaceae射脉菌属
Phlebia1 2.00 胶质射脉革菌
Phlebia tremellosa1 多孔菌科
Polyporales多孔菌属
Polyporus2 4.00 漏斗多孔菌
Polyporus arcularius2 裂褶菌科
Schizophyllaceae裂褶菌属
Schizophyllum3 6.00 裂褶菌
Schizophyllum commune3 接合菌门
Zygomycota毛霉菌科 Mucoraceae 毛霉属 Mucor 8 16.00 不规则毛霉
Mucor irregularis2 冻土毛霉
Mucor hiemalis6 子囊菌门
Ascomycota丛赤壳科
Nectriaceae镰刀菌属
Fusarium12 24.00 禾谷镰刀菌
Fusarium graminearum6 木贼镰刀菌
Fusarium equiseti3 尖孢镰刀菌
Fusarium oxysporum3 瘤座孢科
Tubeculariaceae漆斑菌属
Myrothecium1 2.00 Myrothecium sp. 1 生赤壳科
Bionectriaceae粘帚霉菌属
Clonostachys3 6.00 粉红粘帚菌
Clonostachys rosea3 梨孢假壳科
Apiosporaceae节菱孢属
Arthrinium3 6.00 暗孢节菱孢菌
Arthrinium phaeospermum3 革菌科
Coriolaceae蜡孔菌属
Ceriporia1 2.00 撕裂蜡孔菌
Ceriporia lacerata1 曲霉科
Aspergillaceae青霉属 Penicillium 1 2.00 Penicillium aquaticum 1 曲霉属 Aspergillus 3 6.00 烟曲霉 Aspergillus fumigatus 1 聚多曲霉 Aspergillus sydowii 2 山野壳菌科
Montagnulaceae小球壳孢属
Microsphaeropsis3 6.00 Microsphaeropsis amaranthi 3 未定义 Leiothecium 1 2.00 Leiothecium ellipsoideum 1 Parengyodontium 1 2.00 Parengyodontium album 1 表 2 Alpha多样性指数分析
Table 2. Alpha diversity index analysis
土壤样品
Soil sample序列数
NumberAce指数
Ace indexShannon指数
Shannon indexSimpson指数
Simpson indexChao指数
Chao index覆盖度
Coverage/%S1 60290.00 334.90 3.11 0.12 341.14 99.88 S2 71619.00 283.08 4.05 0.04 292.00 99.95 S3 71849.00 278.25 3.44 0.08 279.56 99.94 平均值 Mean 67919.33 298.74 3.53 0.08 304.23 — -
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