Cultivatable bacterial diversity in the rhizosphere of Lop Nur desert sandy soil and medicinal plants

doi:10.7522/j.issn.1000-694X.2025.00107

Journal of Desert Research ›› 2026, Vol. 46 ›› Issue (1): 262-272.DOI: 10.7522/j.issn.1000-694X.2025.00107

Cultivatable bacterial diversity in the rhizosphere of Lop Nur desert sandy soil and medicinal plants

Erjun Wang¹(), Yalong Zhang¹, Yang Liu³^,⁴, Yiyang Zhang⁴, Ling Jin¹^,², Gaosen Zhang¹^,³^,⁴()

^1.College of Pharmacy /, Gansu University of Chinese Medicine，Lanzhou 730000，China
^2.Northwest Collaborative Innovation Center for Traditional Chinese Medicine, Gansu University of Chinese Medicine，Lanzhou 730000，China
^3.Key Laboratory of Extreme Environmental Microbial Resources and Engineering /, Northwest Institute of Eco-Environment and Resources，Chinese Academy of Sciences，Lanzhou 730000，China
^4.Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources，Chinese Academy of Sciences，Lanzhou 730000，China

Received:2025-03-06 Revised:2025-05-06 Online:2026-01-20 Published:2026-03-09
Contact: Gaosen Zhang

Abstract

Abstract:

The ecosystem of Lop Nur in the extreme arid region of Xinjiang is rich in microbial resources， which aims to reveal the diversity and distribution characteristics of microbial resources in this area. Six kinds of media were used to isolate and purify the bacteria in the samples， and the isolated bacteria were identified and community structure analysis were analyzed by 16S rRNA gene amplification， sequencing and phylogenetic analysis. The results showed that the isolated bacteria mainly belonged to Actinobacteria， Bacteroidetes， Firmicutes and Proteobacteria， among which Actinobacteria and Firmicutes were the dominant phyla. At the genus level， Kocuria， Nocardiopsis and Salinicoccus are the dominant genera. There were significant differences in the number， community structure and diversity of culturable bacteria in different habitats， and the bacterial richness was sandy soil>Bistorta vivipara>Phragmites australis>Tamarix chinensis. A total of 54 genera were isolated from the four habitats， and the number of cultivable colonies was 1.280×10⁵~2.168×10⁶ CFU·g^-1， and 41 potential new species were identified. This study revealed the diversity characteristics of culturable bacteria in the Lop Nur area， and clarified the differences in the rhizosphere culturable bacteria of three medicinal plants， namely Knotweed， Tamarix and Phragmites australis， in this area.

Key words: Lop Nur, medicinal plants, 16S rRNA gene, culturable, bacterial diversity

CLC Number:

Erjun Wang, Yalong Zhang, Yang Liu, Yiyang Zhang, Ling Jin, Gaosen Zhang. Cultivatable bacterial diversity in the rhizosphere of Lop Nur desert sandy soil and medicinal plants[J]. Journal of Desert Research, 2026, 46(1): 262-272.

Figures/Tables 8

References 62

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培养基	成分及浓度/(g·L^-1)
NFM	KH₂PO₄: 1.0, K₂HPO₄: 1.54, NaCl: 0.05, CaCl₂: 0.04, FeCl₃: 0.004, MgSO₄: 0.1, 酵母浸粉: 0.8, 琼脂: 15.0, pH: 6.9±0.1
YMA	K₂HPO₄: 0.5, MgSO₄: 0.2, NaCl: 0.1, 甘露醇: 10.0, 酵母浸粉: 1.0, 刚果红: 0.025, 琼脂: 15.0, pH: 7.0±0.2
ISP2	麦芽浸粉: 10.0, 酵母浸粉: 4.0, 葡萄糖: 4.0, 琼脂: 20.0, pH: 7.3±0.2
ISP7	L-天冬酰胺: 1.0, L-酪氨酸: 0.5, K₂HPO₄: 0.5, MgSO₄·7H₂O: 0.5, NaCl: 0.5, FeSO₄·7H₂O: 0.01, MnCl₂·4H₂O: 0.001, ZnSO₄·7H₂O: 0.001, 丙三醇: 18.9, 琼脂: 20.0, pH: 7.0±0.2
R2A	胰蛋白胨: 0.25, 酸水解酪蛋白: 0.5, 酵母浸粉: 0.5, 可溶性淀粉: 0.5, K₂HPO₄: 0.3, MgSO₄: 0.1, 丙酮酸钠: 0.3, 蛋白胨: 0.25, 葡萄糖: 0.5, 琼脂: 20.0, pH: 7.2±0.2
TSB	胰酪胨: 17.0, 大豆粉木瓜蛋白酶消化物: 3.0, 葡萄糖: 2.5, NaCl: 5.0, K₂HPO₄: 2.5, 琼脂: 20.0, pH: 7.3±0.2

培养基	成分及浓度/(g·L^-1)
NFM	KH₂PO₄: 1.0, K₂HPO₄: 1.54, NaCl: 0.05, CaCl₂: 0.04, FeCl₃: 0.004, MgSO₄: 0.1, 酵母浸粉: 0.8, 琼脂: 15.0, pH: 6.9±0.1
YMA	K₂HPO₄: 0.5, MgSO₄: 0.2, NaCl: 0.1, 甘露醇: 10.0, 酵母浸粉: 1.0, 刚果红: 0.025, 琼脂: 15.0, pH: 7.0±0.2
ISP2	麦芽浸粉: 10.0, 酵母浸粉: 4.0, 葡萄糖: 4.0, 琼脂: 20.0, pH: 7.3±0.2
ISP7	L-天冬酰胺: 1.0, L-酪氨酸: 0.5, K₂HPO₄: 0.5, MgSO₄·7H₂O: 0.5, NaCl: 0.5, FeSO₄·7H₂O: 0.01, MnCl₂·4H₂O: 0.001, ZnSO₄·7H₂O: 0.001, 丙三醇: 18.9, 琼脂: 20.0, pH: 7.0±0.2
R2A	胰蛋白胨: 0.25, 酸水解酪蛋白: 0.5, 酵母浸粉: 0.5, 可溶性淀粉: 0.5, K₂HPO₄: 0.3, MgSO₄: 0.1, 丙酮酸钠: 0.3, 蛋白胨: 0.25, 葡萄糖: 0.5, 琼脂: 20.0, pH: 7.2±0.2
TSB	胰酪胨: 17.0, 大豆粉木瓜蛋白酶消化物: 3.0, 葡萄糖: 2.5, NaCl: 5.0, K₂HPO₄: 2.5, 琼脂: 20.0, pH: 7.3±0.2

属名	编号	模式菌株	相似度	登录号
Dietzia	P35	Dietzia maris DSM 43672^T	98.60	X79290
Nocardiopsis	P323	Nocardiopsis akebiae HDS12^T	98.35	OM368592
Nesterenkonia	2L310	Nesterenkonia rhizosphaerae EGI 80099^T	98.34	KF040423
Nesterenkonia	NL36	Nesterenkonia lacusekhoensis IFAM EL-30^T	98.41	AJ290397
Nesterenkonia	N32	Nesterenkonia flava CAAS 251^T	96.79	EF680886
Microbacterium	RL39	Microbacterium aerolatum NBRC 103071^T	98.20	BJUW01000027
Kocuria	P335	Kocuria salina Hv14b^T	97.97	LT674162
Kineococcus	R2L29	Kineococcus radiotolerans SRS30216^T	97.39	CP000750
Kineococcus	R217	Kineococcus mangrovi L2-1-L1^T	98.48	LC056925
Kineococcus	P319	Kineococcus gypseus YIM 121300^T	97.84	KP205400
Kineococcus	2L35	Kineococcus aureolus YIM 121940^T	98.26	KX943589
Geodermatophilus	A34	Geodermatophilus sabuli BMG8133^T	98.38	LN626269
Dietzia	A315	Dietzia aurantiaca CCUG 35676^T	97.23	FR821260
Brachybacterium	R39	Brachybacterium sacelli LMG 20345^T	98.37	AJ415384
Rufibacter	A316	Rufibacter glacialis MDT1-10-3^T	97.89	JX949546
Pontibacter	N34	Pontibacter ramchanderi LP43^T	94.44	jgi.1102448
Pontibacter	P326	Pontibacter qinzhouensis GY10130^T	96.98	MZ318048
Kaistella	A110	Kaistella montana WG4^T	98.47	KX082815
Streptomyces	N21	Streptomyces calidiresistens YIM 78087^T	97.15	KJ361473
Salinicoccus	T55	Salinicoccus hispanicus DSM 5352^T	96.91	AY028927
Planococcus	T34	Planococcus wigleyi Sa1BUA13^T	98.45	JACSPU010000017
Planococcus	N23	Planococcus donghaensis DSM 22276^T	98.57	CP016544
Paraliobacillus	I7L23	Paraliobacillus sediminis 126C4^T	95.73	KU870235
Paenibacillus	R211	Paenibacillus massiliensis subsp panacisoli Gsoil 1411^T	97.55	AB245384
Paenibacillus	R2L12	Paenibacillus antri SYSU K30003^T	96.50	MK943674
Marinilactibacillus	R216	Marinilactibacillus piezotolerans DSM 16108^T	98.57	jgi.1067996
Gracilibacillus	T311	Gracilibacillus ureilyticus MF38^T	97.83	EU709020
Carnobacterium	T52	Carnobacterium pleistocenium FTR1^T	96.40	JQLQ01000002
Carnobacterium	TL56	Carnobacterium inhibens subsp Inhibens DSM 13024^T	95.93	JQIV01000006
Bacillus	T312	Bacillus arachidis SY8^T	97.94	OM062591
Skermanella	R31	Skermanella aerolata 5416T-32^T	98.31	DQ672568
Ramlibacter	A318	Ramlibacter solisilvae 5-10^T	97.71	CP010951
Plastorhodobacter	TL35	Plastorhodobacter daqingensis DQW12E81-30^T	97.08	KF312713
Pararoseomonas	R2L313	Pararoseomonas rosea 173-96^T	98.22	AJ488505
Paracoccus	I7L27	Paracoccus tibetensis Tibet-S9a3^T	98.04	DQ108402
Paracoccus	P340	Paracoccus nototheniae I-41R45^T	98.28	MH065728
Paracoccus	TL23	Paracoccus marcusii DSM 11574^T	98.34	Y12703
Kushneria	RL211	Kushneria pakistanensis NCCP-934^T	98.15	AB970675
Halomonas	TL312	Halomonas rifensis HK31^T	97.43	HM026177
Halomonas	N314	Halomonas desiderata FB2^T	97.86	X92417
Azospirillum	N317	Azospirillum doebereinerae GSF71^T	98.48	AJ238567

属名	编号	模式菌株	相似度	登录号
Dietzia	P35	Dietzia maris DSM 43672^T	98.60	X79290
Nocardiopsis	P323	Nocardiopsis akebiae HDS12^T	98.35	OM368592
Nesterenkonia	2L310	Nesterenkonia rhizosphaerae EGI 80099^T	98.34	KF040423
Nesterenkonia	NL36	Nesterenkonia lacusekhoensis IFAM EL-30^T	98.41	AJ290397
Nesterenkonia	N32	Nesterenkonia flava CAAS 251^T	96.79	EF680886
Microbacterium	RL39	Microbacterium aerolatum NBRC 103071^T	98.20	BJUW01000027
Kocuria	P335	Kocuria salina Hv14b^T	97.97	LT674162
Kineococcus	R2L29	Kineococcus radiotolerans SRS30216^T	97.39	CP000750
Kineococcus	R217	Kineococcus mangrovi L2-1-L1^T	98.48	LC056925
Kineococcus	P319	Kineococcus gypseus YIM 121300^T	97.84	KP205400
Kineococcus	2L35	Kineococcus aureolus YIM 121940^T	98.26	KX943589
Geodermatophilus	A34	Geodermatophilus sabuli BMG8133^T	98.38	LN626269
Dietzia	A315	Dietzia aurantiaca CCUG 35676^T	97.23	FR821260
Brachybacterium	R39	Brachybacterium sacelli LMG 20345^T	98.37	AJ415384
Rufibacter	A316	Rufibacter glacialis MDT1-10-3^T	97.89	JX949546
Pontibacter	N34	Pontibacter ramchanderi LP43^T	94.44	jgi.1102448
Pontibacter	P326	Pontibacter qinzhouensis GY10130^T	96.98	MZ318048
Kaistella	A110	Kaistella montana WG4^T	98.47	KX082815
Streptomyces	N21	Streptomyces calidiresistens YIM 78087^T	97.15	KJ361473
Salinicoccus	T55	Salinicoccus hispanicus DSM 5352^T	96.91	AY028927
Planococcus	T34	Planococcus wigleyi Sa1BUA13^T	98.45	JACSPU010000017
Planococcus	N23	Planococcus donghaensis DSM 22276^T	98.57	CP016544
Paraliobacillus	I7L23	Paraliobacillus sediminis 126C4^T	95.73	KU870235
Paenibacillus	R211	Paenibacillus massiliensis subsp panacisoli Gsoil 1411^T	97.55	AB245384
Paenibacillus	R2L12	Paenibacillus antri SYSU K30003^T	96.50	MK943674
Marinilactibacillus	R216	Marinilactibacillus piezotolerans DSM 16108^T	98.57	jgi.1067996
Gracilibacillus	T311	Gracilibacillus ureilyticus MF38^T	97.83	EU709020
Carnobacterium	T52	Carnobacterium pleistocenium FTR1^T	96.40	JQLQ01000002
Carnobacterium	TL56	Carnobacterium inhibens subsp Inhibens DSM 13024^T	95.93	JQIV01000006
Bacillus	T312	Bacillus arachidis SY8^T	97.94	OM062591
Skermanella	R31	Skermanella aerolata 5416T-32^T	98.31	DQ672568
Ramlibacter	A318	Ramlibacter solisilvae 5-10^T	97.71	CP010951
Plastorhodobacter	TL35	Plastorhodobacter daqingensis DQW12E81-30^T	97.08	KF312713
Pararoseomonas	R2L313	Pararoseomonas rosea 173-96^T	98.22	AJ488505
Paracoccus	I7L27	Paracoccus tibetensis Tibet-S9a3^T	98.04	DQ108402
Paracoccus	P340	Paracoccus nototheniae I-41R45^T	98.28	MH065728
Paracoccus	TL23	Paracoccus marcusii DSM 11574^T	98.34	Y12703
Kushneria	RL211	Kushneria pakistanensis NCCP-934^T	98.15	AB970675
Halomonas	TL312	Halomonas rifensis HK31^T	97.43	HM026177
Halomonas	N314	Halomonas desiderata FB2^T	97.86	X92417
Azospirillum	N317	Azospirillum doebereinerae GSF71^T	98.48	AJ238567

生境	菌属
SS	Agrococcus，Pseudoclavibacter，Rhodococcus，Saccharothrix，Sanguibacter，Pontibacter，Rufibacter，Gracilibacillus，Paraliobacillus，Planococcus，Salinicoccus，Sediminibacillus，Streptococcus，Aliihoeflea，Pararoseomonas，Plastorhodobacter，Ramlibacter，Skermanella
ZS	Blastococcus，Brachybacterium，Cellulomonas，Dietzia，Geodermatophilus，Gordonia，Nocardioides，Nocardiopsis，Carnobacterium，Neobacillus，Oceanobacillus，Aurantimonas，Azospirillum，Coralloluteibacterium，Geminicoccus，Kushneria，Microvirga
LS	Stutzerimonas
CS	Isoptericola，Zhihengliuella，Kaistella，Terribacillus
SS&ZS	Arthrobacter，Kineococcus，Microbacterium，Bacillus，Metabacillus，Paenibacillus，Halomonas，Paracoccus
SS&ZS&LS	Georgenia，Nesterenkonia，Marinilactibacillus
SS&ZS&LS&CS	Kocuria，Streptomyces
SS&ZS&CS	Modestobacter

Cultivatable bacterial diversity in the rhizosphere of Lop Nur desert sandy soil and medicinal plants

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