Cyanobacterial diversity of biological soil crusts in different bioclimatic regions in China

doi:10.7522/j.issn.1000-694X.2021.00105

Journal of Desert Research ›› 2022, Vol. 42 ›› Issue (2): 85-94.DOI: 10.7522/j.issn.1000-694X.2021.00105

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Cyanobacterial diversity of biological soil crusts in different bioclimatic regions in China

Peiying Yan¹(), Jianjun Qu², Zihui Yang¹, Jianhua Xiao², Jinnian Tang¹()

^1.Minqin National Studies Station for Desert Steppe Ecosystem，Gansu Desert Control Research Institute，Lanzhou 730070，China
^2.Dunhuang Gobi and Desert Ecology and Environment Research Station / Key Laboratory of Desert and Desertification，Northwest Institute of Eco-Environment and Resources，Chinese Academy of Sciences，Lanzhou 730000，China

Received:2021-01-07 Revised:2021-08-25 Online:2022-03-20 Published:2022-03-30
Contact: Jinnian Tang

Abstract

Abstract:

Filamentous cyanobacteria， as pioneer colonizers in desert areas， play an important role in the biogeochemical cycle and ecological restoration of arid and semi-arid areas. In this paper， sixty-seven filamentous cyanobacteria were isolated from the cyanobacterial crusts in three different bioclimatic regions. The results showed that sixty-seven filamentous cyanobacteria belonged to Oscillatorles， Siaynechococcales and Nostocale. The community compositions of cyanobacteria in the three bioclimatic regions were different. Microcoleus vaginatus was a common cyanobacterium in three different bioclimatic regions. There was no common cyanobacterium in Maqu and Minqin except Microcoleus vaginatus. Microcoleus and Oscillatoria were common cyanobacterial genera in Minqin and Yanchi. Only members of Nodosilinea were found in Maqu and Yanchi. Among the cyanobacterial crusts in three bioclimatic regions， Calothrix desertica was isolated only from Maqu， not from the other two regions.

Key words: filamentous cyanobacteria, diversity, biological soil crusts, bioclimatic regions

CLC Number:

Q948.1

Peiying Yan, Jianjun Qu, Zihui Yang, Jianhua Xiao, Jinnian Tang. Cyanobacterial diversity of biological soil crusts in different bioclimatic regions in China[J]. Journal of Desert Research, 2022, 42(2): 85-94.

Figures/Tables 12

References 31

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样地	气候类型	经纬度	海拔 /m	年降水量 /mm	年蒸发量 /mm	年均气温 /℃	土壤类型	主要植被
民勤	大陆性荒漠气候	38°35′01″N,102°58′16″E	1 391	117	2 352	7.7	黏沙土	红砂、白刺、油蒿；猪毛菜、盐生草、五星蒿、画眉草
盐池	中温带大陆性气候	37°42′31″N,107°13′37″E	1 530	292	2 024	8.3	风沙土	油蒿、杨柴、沙柳、花棒；赖草、白草、沙生针茅
玛曲	高原大陆性气候	34°00′39″N,102°09′30″E	3 446	616	1 353	1.1	沙质土	褐鳞苔草、粗壮嵩草、赖草、垂穗披碱草

样地	气候类型	经纬度	海拔 /m	年降水量 /mm	年蒸发量 /mm	年均气温 /℃	土壤类型	主要植被
民勤	大陆性荒漠气候	38°35′01″N,102°58′16″E	1 391	117	2 352	7.7	黏沙土	红砂、白刺、油蒿；猪毛菜、盐生草、五星蒿、画眉草
盐池	中温带大陆性气候	37°42′31″N,107°13′37″E	1 530	292	2 024	8.3	风沙土	油蒿、杨柴、沙柳、花棒；赖草、白草、沙生针茅
玛曲	高原大陆性气候	34°00′39″N,102°09′30″E	3 446	616	1 353	1.1	沙质土	褐鳞苔草、粗壮嵩草、赖草、垂穗披碱草

藻株编号	所属蓝藻目	藻丝形态	相似藻（登录号）	相似度 /%	相似藻来源
MA2	颤藻目 (Oscillatoriales)	藻丝体较宽，成束，鞘厚，细胞圆柱形，横壁不收缢，末端细胞扁圆柱形	Ancylothrix terrestris(NR_149292)	99.5	土壤
MA4		藻丝较宽，成束，鞘厚，细胞近方形，横壁不收缢；具帽状体	Microcoleus vaginatus(EF654078)	99.8	土壤
MA15		藻丝较细，弯曲缠绕，鞘薄，细胞圆柱形，横壁不收缢，末端不渐细	Phormidium sp. SAG (EU624415)	99.1	土壤
MA5	聚球藻目 (Synechococcales)	藻丝较细，群聚成簇，鞘薄，横壁收缢，末端不渐细	Leptolyngbya margaretheana(FR798934)	98.5	生物膜
MA11		藻丝较细，群集成簇，部分成螺旋状，具有结节，鞘薄，横壁收缢，末端细胞头状	Nodosilinea sp. ACSSI (MT425934)	99.6	黑钙土
MA20		藻丝较细，弯曲，群集成簇，鞘薄，细胞圆柱形，横壁收缢，末端不渐细	Uncultured cyanobacterium clone (HQ189074)	99.2	高山土壤
MA1	念珠藻目 (Nostocales)	藻丝体较宽，弯曲缠绕，鞘厚，细胞圆柱形，横壁不收缢，末端渐细	Nostoc sp. FI5-VF5 clone (MH427695)	96.3	土壤
MA17		藻丝宽，较长，群集成簇，不分枝，鞘薄，横壁收缢，异形胞基生，呈半球形	Calothrix desertica(AF132779)	99.3	沙粒
MAN3		藻丝较宽，较短，群集成簇，不分枝，鞘薄，横壁收缢，异形胞基生，呈半球形	Calothrix desertica(AF132779)	98.8	沙粒

藻株编号	所属蓝藻目	藻丝形态	相似藻（登录号）	相似度 /%	相似藻来源
MA2	颤藻目 (Oscillatoriales)	藻丝体较宽，成束，鞘厚，细胞圆柱形，横壁不收缢，末端细胞扁圆柱形	Ancylothrix terrestris(NR_149292)	99.5	土壤
MA4		藻丝较宽，成束，鞘厚，细胞近方形，横壁不收缢；具帽状体	Microcoleus vaginatus(EF654078)	99.8	土壤
MA15		藻丝较细，弯曲缠绕，鞘薄，细胞圆柱形，横壁不收缢，末端不渐细	Phormidium sp. SAG (EU624415)	99.1	土壤
MA5	聚球藻目 (Synechococcales)	藻丝较细，群聚成簇，鞘薄，横壁收缢，末端不渐细	Leptolyngbya margaretheana(FR798934)	98.5	生物膜
MA11		藻丝较细，群集成簇，部分成螺旋状，具有结节，鞘薄，横壁收缢，末端细胞头状	Nodosilinea sp. ACSSI (MT425934)	99.6	黑钙土
MA20		藻丝较细，弯曲，群集成簇，鞘薄，细胞圆柱形，横壁收缢，末端不渐细	Uncultured cyanobacterium clone (HQ189074)	99.2	高山土壤
MA1	念珠藻目 (Nostocales)	藻丝体较宽，弯曲缠绕，鞘厚，细胞圆柱形，横壁不收缢，末端渐细	Nostoc sp. FI5-VF5 clone (MH427695)	96.3	土壤
MA17		藻丝宽，较长，群集成簇，不分枝，鞘薄，横壁收缢，异形胞基生，呈半球形	Calothrix desertica(AF132779)	99.3	沙粒
MAN3		藻丝较宽，较短，群集成簇，不分枝，鞘薄，横壁收缢，异形胞基生，呈半球形	Calothrix desertica(AF132779)	98.8	沙粒

藻株编号	所属蓝藻目	藻丝形态	相似藻（登录号）	相似度/%	相似藻来源
MIN1	颤藻目 (Oscillatoriales)	藻丝较宽，成束，鞘厚，细胞近方形，横壁不收缢，具帽状体	Microcoleus vaginatus(MW403933)	99.9	BSCs
MIN2		藻丝较宽，扭曲成团，鞘薄，细胞短柱形，横壁不收缢，末端渐细	Oscillatoria sp. WY04 (MG874712)	99.1	水稻
MIN3		藻丝较宽，成束，鞘厚，细胞短圆柱形，横壁不收缢，末端细胞钝圆锥形	Microcoleus sp. PCC 7113 (CP003632)	98.2	土壤
MIN6		藻丝较宽，弯曲，鞘厚，细胞近方形，横壁不收缢，有颗粒，末端细胞多样	Tychonema sp. SAG (KM019964)	99.4	土壤
MIN8		藻丝较宽，成束，鞘厚，细胞短圆柱形，横壁不收缢，有颗粒，末端细胞渐细	Microcoleus steenstrupii(MG641920)	99.3	BSCs
MIN9		藻丝较宽，弯曲缠绕，鞘厚，细胞圆柱形，横壁不收缢，末端细胞圆锥形	Uncultured bacterium clone (FJ230813)	97.6	矿泥
MIN18		藻丝较细，群集成簇，鞘薄，细胞圆柱形，横壁不收缢，末端不渐细	Microcoleus sp. LSB13 clone (MW403938)	99.1	BSCs
MIN23		藻丝较宽，群集成簇，鞘厚，细胞近方形，横壁不收缢，端不渐细	Phormidesmis sp. ACSSI (KY283068)	98.9	土壤
MIN4	聚球藻目 (Synechococcales)	藻丝较细，弯曲成簇，鞘薄，细胞圆柱形，横壁不收缢，末端细胞头状	Oculatella atacamensis(MK248001)	99.4	BSCs

Cyanobacterial diversity of biological soil crusts in different bioclimatic regions in China

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藻株编号	所属蓝藻目	藻丝形态	相似藻(登录号)	相似度 /%	相似藻来源
YAN2	颤藻目 (Oscillatoriales)	藻丝较宽，成束，鞘厚，细胞圆柱形，横壁不收缢，有颗粒，具帽状体	Microcoleus sp. LSB13 clone (MW403938)	99.6	BSCs
YAN3		藻丝较宽，扭曲成绳状，鞘厚，细胞短圆柱形，横壁不收缢，具帽状体	Microcoleus cf. vaginatus (MH688845)	99.6	BSCs
YAN4		藻丝宽，弯曲，鞘薄，细胞短圆柱形，横壁不收缢，有颗粒，末端不渐细	Coleofasciculus chthonoplastes(KC463190)	98.9	BSCs
YAN16		藻丝宽，弯曲，鞘薄，细胞短圆柱形，横壁不收缢，末端不渐细	Oscillatoria sp. WY04 (MG874712)	99.3	水稻
YAN19		藻丝较宽，弯曲缠绕，鞘厚，细胞圆柱形，横壁收缢，末端不渐细	Microcoleus sp. ACSSI (MT425931)	99.4	黑钙土
YAN22		藻丝较宽，群集成团，鞘薄，细胞圆柱形，横壁不收缢，末端细胞圆锥形	Oscillatoriales cyanobacterium (MT664819)	99.9	BSCs
YAN5	聚球藻目 (Synechococcales)	藻丝较细，群集成团，部分螺旋状，鞘薄，细胞短圆柱形，横壁不收缢，末端细胞头状	Uncultured cyanobacterium clone (EU255707)	97.2	微生物垫
YAN8		藻丝较宽，弯曲缠绕，鞘厚，细胞圆柱形，横壁收缢，末端细胞钝圆锥形	Nodosilinea epilithica(KY283051)	99.3	土壤
YAN9		藻丝较细，群集成团，鞘薄，细胞圆柱形，横壁收缢，末端细胞头状	Pseudophormidium sp. WJT61-NPBG13 (KJ939055)	99.4	荒漠土
YAN20		藻丝较细，呈波浪形弯曲，鞘薄，细胞圆柱形，横壁收缢，末端细胞头状	Nodosilinea sp. ACSSI (MT425934)	99.6	黑钙土

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