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Biogeography of Nocardiopsis strains from hypersaline environments of Yunnan and Xinjiang Provinces, western China.

He ST, Zhi XY, Jiang H, Yang LL, Wu JY, Zhang YG, Hozzein WN, Li WJ - Sci Rep (2015)

Bottom Line: Such information is essential for understanding the ecology of Nocardiopsis.Here we analyzed 16S rRNA, gyrB, rpoB and sodA genes of 78 Nocardiopsis strains isolated from hypersaline environments in Yunnan and Xinjiang Provinces of western China.Statistical analyses showed that spatial distance and environmental factors substantially influenced Nocardiopsis distribution in hypersaline environments: the former had stronger influence at large spatial scales, whereas the latter was more influential at small spatial scales.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, College of Ecology and Evolution, Sun Yat-Sen University, Guangzhou, 510275, China.

ABSTRACT
The genus Nocardiopsis is a widespread group within the phylum Actinobacteria and has been isolated from various salty environments worldwide. However, little is known about whether biogeography affects Nocardiopsis distribution in various hypersaline environments. Such information is essential for understanding the ecology of Nocardiopsis. Here we analyzed 16S rRNA, gyrB, rpoB and sodA genes of 78 Nocardiopsis strains isolated from hypersaline environments in Yunnan and Xinjiang Provinces of western China. The obtained Nocardiopsis strains were classified into five operational taxonomic units, each comprising location-specific phylo- and genotypes. Statistical analyses showed that spatial distance and environmental factors substantially influenced Nocardiopsis distribution in hypersaline environments: the former had stronger influence at large spatial scales, whereas the latter was more influential at small spatial scales.

No MeSH data available.


(A) PCA map showing the 8 sampling sites and their correlation with trace elements. Note: pH, Cl–, Ca2+, Mg2+, K+, Na+, Fe2+, Mn2+, Cu2+, Zn2+, total N (nitrogen) and total P (phosphorus) were used to evaluate the influence of each variable. The longer the arrow, the greater the influence; the smaller the angle between two arrows, the closer their correlation. solid squares (■), upright (▲) and inverse (▼) triangles, and diamonds (♦) denote the Qijiaojing (QJJ), Aydingkol (AK), Jiangcheng (JC) and Heijing (HJ) sampling sites, respectively.
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f1: (A) PCA map showing the 8 sampling sites and their correlation with trace elements. Note: pH, Cl–, Ca2+, Mg2+, K+, Na+, Fe2+, Mn2+, Cu2+, Zn2+, total N (nitrogen) and total P (phosphorus) were used to evaluate the influence of each variable. The longer the arrow, the greater the influence; the smaller the angle between two arrows, the closer their correlation. solid squares (■), upright (▲) and inverse (▼) triangles, and diamonds (♦) denote the Qijiaojing (QJJ), Aydingkol (AK), Jiangcheng (JC) and Heijing (HJ) sampling sites, respectively.

Mentions: Principle component analysis (PCA) showed that the Yunnan sampling sites were different from that of Xinjiang with respect to environmental factors: the sediment chemistry of the Aydingkol and Qijiaojing salt lakes was different from that of the Heijing and Jiangcheng salt mines: the former possesses higher salinity, pH and concentrations of Ca2+, Mg2+ and Mn2+ but lower concentrations of trace elements (e.g. K+, Cu2+, Zn2+) and total phosphorus than the latter (cumulative contribution value = 91.5%, Fig. 1). In addition, the sampling sites within one region (Yunnan or Xinjiang) were different from each other on the basis of climate types, geographic distances, and geochemistry factors (Tables S1 & S2, Fig. 1).


Biogeography of Nocardiopsis strains from hypersaline environments of Yunnan and Xinjiang Provinces, western China.

He ST, Zhi XY, Jiang H, Yang LL, Wu JY, Zhang YG, Hozzein WN, Li WJ - Sci Rep (2015)

(A) PCA map showing the 8 sampling sites and their correlation with trace elements. Note: pH, Cl–, Ca2+, Mg2+, K+, Na+, Fe2+, Mn2+, Cu2+, Zn2+, total N (nitrogen) and total P (phosphorus) were used to evaluate the influence of each variable. The longer the arrow, the greater the influence; the smaller the angle between two arrows, the closer their correlation. solid squares (■), upright (▲) and inverse (▼) triangles, and diamonds (♦) denote the Qijiaojing (QJJ), Aydingkol (AK), Jiangcheng (JC) and Heijing (HJ) sampling sites, respectively.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4542603&req=5

f1: (A) PCA map showing the 8 sampling sites and their correlation with trace elements. Note: pH, Cl–, Ca2+, Mg2+, K+, Na+, Fe2+, Mn2+, Cu2+, Zn2+, total N (nitrogen) and total P (phosphorus) were used to evaluate the influence of each variable. The longer the arrow, the greater the influence; the smaller the angle between two arrows, the closer their correlation. solid squares (■), upright (▲) and inverse (▼) triangles, and diamonds (♦) denote the Qijiaojing (QJJ), Aydingkol (AK), Jiangcheng (JC) and Heijing (HJ) sampling sites, respectively.
Mentions: Principle component analysis (PCA) showed that the Yunnan sampling sites were different from that of Xinjiang with respect to environmental factors: the sediment chemistry of the Aydingkol and Qijiaojing salt lakes was different from that of the Heijing and Jiangcheng salt mines: the former possesses higher salinity, pH and concentrations of Ca2+, Mg2+ and Mn2+ but lower concentrations of trace elements (e.g. K+, Cu2+, Zn2+) and total phosphorus than the latter (cumulative contribution value = 91.5%, Fig. 1). In addition, the sampling sites within one region (Yunnan or Xinjiang) were different from each other on the basis of climate types, geographic distances, and geochemistry factors (Tables S1 & S2, Fig. 1).

Bottom Line: Such information is essential for understanding the ecology of Nocardiopsis.Here we analyzed 16S rRNA, gyrB, rpoB and sodA genes of 78 Nocardiopsis strains isolated from hypersaline environments in Yunnan and Xinjiang Provinces of western China.Statistical analyses showed that spatial distance and environmental factors substantially influenced Nocardiopsis distribution in hypersaline environments: the former had stronger influence at large spatial scales, whereas the latter was more influential at small spatial scales.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, College of Ecology and Evolution, Sun Yat-Sen University, Guangzhou, 510275, China.

ABSTRACT
The genus Nocardiopsis is a widespread group within the phylum Actinobacteria and has been isolated from various salty environments worldwide. However, little is known about whether biogeography affects Nocardiopsis distribution in various hypersaline environments. Such information is essential for understanding the ecology of Nocardiopsis. Here we analyzed 16S rRNA, gyrB, rpoB and sodA genes of 78 Nocardiopsis strains isolated from hypersaline environments in Yunnan and Xinjiang Provinces of western China. The obtained Nocardiopsis strains were classified into five operational taxonomic units, each comprising location-specific phylo- and genotypes. Statistical analyses showed that spatial distance and environmental factors substantially influenced Nocardiopsis distribution in hypersaline environments: the former had stronger influence at large spatial scales, whereas the latter was more influential at small spatial scales.

No MeSH data available.