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Soil Ecology Letters

ISSN 2662-2289

ISSN 2662-2297(Online)

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Soil Ecology Letters  2022, Vol. 4 Issue (4): 454-469   https://doi.org/10.1007/s42832-021-0113-3
  本期目录
Plant diversity is coupled with soil fungal diversity in a natural temperate steppe of northeastern China
Dan Liu1, Guohua Liu2,3(), Li Chen4, Wangya Han5, Dongbo Wang6
1. Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu 610041, China
2. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
3. University of Chinese Academy of Sciences, Beijing 100049, China
4. Torch High Technology Industry Development Center, Ministry of Science & Technology, Beijing 100049, China
5. Institute of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China
6. Monitoring Station for Eco-environment of Hulunbeir, Hulunbeir 021000, China
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Abstract：

• Soil fungal community composition varied significantly between study sites.

• Plant species richness (PSR) contributed most to the variation in soil fungi community.

• Both α and β diversity of soil fungi coupled well with that of plant.

• Plant diversity can predict soil fungal diversity in the temperate steppe of northeastern China.

Soil fungi and aboveground plant play vital functions in terrestrial ecosystems, while the relationship between aboveground plant diversity and the unseen soil fungal diversity remains unclear. We established 6 sites from the west to the east of the temperate steppe that vary in plant diversity (plant species richness: 7-32) to explore the relationship between soil fungal diversity and aboveground plant diversity. Soil fungal community was characterized by applying 18S rRNA gene sequencing using MiSeq PE300 and aligned with Silva 132 database. As a result, soil fungal community was predominately composed of species within the Ascomycota (84.36%), Basidiomycota (7.22%) and Mucoromycota (6.44%). Plant species richness occupied the largest explanatory power in structuring soil fungal community (19.05%–19.78%). The alpha (α) diversity of the whole soil fungi and Ascomycota showed a hump-backed pattern with increasing plant species richness, and the beta (β) diversity of the whole soil fungi and Ascomycota increased with increasing plant β diversity. Those results indicated that soil fungi and external resources were well balanced at the 20-species level of plant and the sites were more distinct in the composition of their plant communities also harbored more distinct soil fungal communities. Thus, plant diversity could predict both soil fungal α and β diversity in the temperate steppe of northeastern China.
Key words： Temperate steppe    Sequencing    Plant diversity    Soil fungal diversity
收稿日期: 2020-04-25      出版日期: 2022-10-25
Corresponding Author(s): Guohua Liu   
 引用本文:   
. [J]. Soil Ecology Letters, 2022, 4(4): 454-469.
Dan Liu, Guohua Liu, Li Chen, Wangya Han, Dongbo Wang. Plant diversity is coupled with soil fungal diversity in a natural temperate steppe of northeastern China. Soil Ecology Letters, 2022, 4(4): 454-469.
 链接本文:  
https://academic.hep.com.cn/sel/CN/10.1007/s42832-021-0113-3
https://academic.hep.com.cn/sel/CN/Y2022/V4/I4/454
Fig.1  
Environmental
variables		 A B C D E F
MAT (°C) 2.09 1.54 1.78 1.47 1.19 1.08
MAP (mm) 138.32 158.86 197.13 195.72 189.55 188.00
Soil type kastanozem kastanozem kastanozem chernozem chernozem chernozem
Moisture (%) 6.32±0.28b 1.91±0.20a 4.54±0.95ab 5.16±0.38ab 19.08±2.22c 18.51±4.00c
Soil pH 7.04±0.02b 6.99±0.25b 7.02±0.14b 6.87±0.01ab 6.70±0.07a 7.30±0.12c
TN (mg ? g−1) 1.78±0.07b 1.06±0.13a 1.85±0.16b 1.88±0.02b 2.88±0.05d 2.40±0.07c
TC (mg ? g−1) 18.80±0.49b 9.66±1.54a 18.69±1.84b 21.52±0.04c 34.64±0.88e 32.38±1.56d
C/N 10.55±0.14b 9.07±0.54a 10.12±0.12b 11.42±0.12c 12.01±0.21d 13.48±0.35e
Silt (%) 4.60±2.23b 2.89±0.21ab 2.82±0.35ab 4.23±0.20ab 2.59±0.07a 2.75±0.31a
Sand (%) 95.33±2.35a 97.11±0.21ab 97.18±0.35ab 95.77±0.20ab 97.41±0.07b 97.25±0.31b
Dominant plant Cleistogenes squarrosa
Carex korshinskii
Stipa krylovii		 C. squarrosa
Stipa grandis
Agropyron cristatum		 C. squarrosa
C. korshinskii
S. grandis		 C. squarrosa
C. korshinskii
Artemisia scoparia		 Serratula centauroides
Carex pediformis
Pulsatilla turczaninovii		 C. pediformis
Thalictrum petaloideum
Potentilla verticillaris
PSR (number of plant species) 8±1a 9±1a 9±2a 19±3b 24±1c 31±2d
PSA (count of plant individual) 1151±264bc 381±165a 602±147ab 1312±64c 1300±315c 1483±393c
PC (%) 56.67±11.55b 23.33±2.89a 53.33±5.77b 78.33±10.41c 71.67±5.77c 80.00±10.00c
AGB (g) 409.47±35.38a 455.33±65.41ab 717.87±104.26bc 537.07±56.78ab 887.47±140.76c 1303.73±286.91d
BGB (g) 1289.61±731.43abc 560.93±233.45a 812.56±565.37ab 1420.67±300.19bcd 1729.97±175.13cd 2191.29±380.17d
LB (g) 224.00±103.66a 253.87±120.34a 288.67±29.61a 176.67±94.43a 232.13±103.38a 307.20±217.75a
Tab.1  
Fig.2  
Fig.3  
Phylum Index A B C D E F
Ascomycota Faith's PD 1.07±0.12ab 1.16±0.14abc 1.04±0.08a 1.36±0.10c 1.31±0.06bc 1.20±0.09abc
Species richness 48.67±6.43a 55.33±6.66ab 48.33±2.89a 64.00±4.00b 58.33±2.08ab 56.00±5.00ab
Basidiomycota Faith's PD 0.54±0.13ab 0.62±0.06ab 0.50±0.06a 0.81±0.04b 0.68±0.12ab 0.49±0.15a
Species richness 17.00±2.65a 22.00±2.00ab 19.67±2.52ab 27.00±1.73b 22.67±3.21ab 20.33±4.16ab
Mucoromycota Faith's PD 0.16±0.12a 0.25±0.12a 0.23±0.10a 0.30±0.13a 0.31±0.03a 0.33±0.04a
Species richness 3.33±1.53a 5.00±0.00a 4.00±1.00a 6.67±1.53a 4.67±0.58a 6.33±2.52a
Tab.2  
PERMANOVA PERMDISP
unweighted UniFrac distance Bray–Curtis distance unweighted UniFrac distance Bray–Curtis distance
Pseudo-F P Pseudo-F P Pseudo-F P Pseudo-F P
The whole fungi 2.39 0.00** 2.55 0.00** 1.29 0.33 0.27 0.92
Ascomycota 1.96 0.00** 2.73 0.00** 0.29 0.91 0.18 0.97
Basidiomycota 3.12 0.00** 2.37 0.00** 0.44 0.81 0.45 0.81
Mucoromycota 3.75 0.14* 1.62 0.02* 0.73 0.61 0.42 0.83
Tab.3  
Fig.4  
Fig.5  
Control for Anweighted UniFrac distance Bray-Curtis distance
Mantel test
The whole fungi 0.55** 0.35**
Ascomycota 0.36** 0.27**
Basidiomycota 0.37** 0.41**
Mucoromycota 0.23* 0.24*
Partial Mantel test
The whole fungi Soil 0.47** 0.20*
Climate 0.47** 0.33**
Ascomycota Soil 0.12 0.22*
Climate 0.25** 0.24**
Basidiomycota Soil 0.22* 0.35**
Climate 0.30** 0.37**
Mucoromycota Soil 0.18* −0.16
Climate 0.09 0.27*
Tab.4  
Fig.6  
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