Skip to main content

Table 1 Characterization of sampling sites and Streptomyces collections. Climatic conditions and soil properties at the sampling sites, microbial enzyme activities, the numbers of isolates recovered from each site along with their average antagonism against Streptomyces sudanensis are listed

From: Diversity and geographic distribution of soil streptomycetes with antagonistic potential against actinomycetoma-causing Streptomyces sudanensis in Sudan and South Sudan

Site codeSite name (coordinates)EcoregionaSoil typeb (Common description)Average annual temperature (°C)Average annual rain (mm)P (mg/100 g)K (mg/100 g)Soil pHNAG Activity (nmol/ hr.−1 g soil− 1)cGLU Activity (nmol/ hr.− 1 g soil− 1)cCEL Activity (nmol/ hr.− 1 g soil− 1)cPHO Activity (nmol/ hr.− 1 g soil− 1)cXYL Activity (nmol/ hr.− 1 g soil− 1)cHumic acid: 105 CFU/g soil− 1ISP2:105 CFU/g soil− 1Nr of selected phenotypesAverage antagonism±SE (clearance zone/ colony diameter)
1Juba (4.8594° N; 31.571° E)East Sudanian savannaNitosols (Tropical rusty red)28.59541.614.67.79.253.61.437.42.91526.1101.46 ± 0.45
2Hajj Abd Allah (13.58° N; 33.35° E)Sahelian Acacia savannaFluvisols (Riverside silt)28.34274.546.38.018.959.93.245.68.18.716.841.62 ± 0.15
4Hajj Abd Allah (13.58° N; 33.35° E)Sahelian Acacia savannaVertisols (Black clay-Gazira cotton clay)28.34276.328.28.19.250.21.760.65.4315.9191.62 ± 0.35
5Hajj Abd Allah (13.58° N; 33.35° E)Sahelian Acacia savannaFluvisols (Silt, gorair)28.342725.380.58.110.793.92.845.16.86.315110.81 ± 0.34
7Hussein Narti-1 (18.1510° N; 31.1402° E)South Saharan steppe and woodlandsYermosol (Desert sand)29.7704.632.68.02.24.1< 0.051.90.227.65.1153.03 ± 0.53
8El Muglad (11.0347° N; 27.7491° E)East Sudanian savannaArenosols (Stabilized sand dunes with silt or clay)28.55012.028.26.425.854.35.085.08.418.331.8161.82 ± 0.37
10Nyala (12.0518° N 24.8805° E)Sahelian Acacia savannaArenosols (Stabilized sand dunes with silt or clay)27.23981.519.27.19.519.3< 0.0527.01.91.810.840.30 ± 0.3
11Khartoum- Soba west (15.5007° N 32.5599° E)Sahelian Acacia savannaYermosols (Flat gravel silt loam with clay)29.61648.319.18.53.48.80.56.31.620.427.3222.83 ± 0.37
12Hajj Abd Allah (13.58° N; 33.35° E)Sahelian Acacia savannaFluvisols (Fine sands)28.34279.159.18.010.469.01.311.74.11222.8152.60 ± 0.46
13Kassala (15.4581° N 36.4040° E)East Sudanian savannaFluvisols (Riverside silt)29.62519.035.27.812.342.10.727.22.47.821.3100.64 ± 0.33
14Umm Ruwaba (12.9028° N; 31.2283° E)Sahelian Acacia savannaArenosols (Stabilized sand dunes with silt or clay)27.03756.722.26.80.79.9< 0.0524.00.26.612110.95 ± 0.41
16Sennar (13.4580° N; 33.2588° E)Sahelian Acacia savannaVertisols (Black clay)28.342710.848.38.12.422.30.240.41.84.213.250.00 ± 0.00
19Hussein Narti-2 (18.1510° N; 31.1402° E)South Saharan steppe and woodlandsYermosols (Desert sand)29.7705.338.38.02.44.9< 0.05< 0.050.219.826.4122.55 ± 0.60
21AL Gadarif-Basonda (14.0243° N; 35.3686° E)East Sudanian savannaVertisols (Black clay)28.96042.437.47.61.99.61.146.12.52.79.931.11 ± 1.11
23Al Fashir (13.6198° N; 25.3549° E)Sahelian Acacia savannaArenosols (Stabilized sand dunes with silt or clay)26.021328.660.07.74.012.10.513.61.21.810.822.47 ± 0.87
27Ad Douiem (13.9951° N; 32.2994° E)Sahelian Acacia savannaYermosols (Flat gravel silt loam with clay)28.34278.952.68.04.040.80.429.23.116.822.5122.91 ± 0.36
29Ad Damazin (11.7855° N; 34.3421° E)East Sudanian savannaVertisols (Black clay)28.371316.549.17.318.987.23.480.58.75.419.841.76 ± 0.61
  1. aTerrestrial ecoregions of Africa and Madagascar: a conservation assessment [14]; bSoil typing based on the soil map of Sudan [15]. cSoil hydrolytic enzyme activities: NAG N-acetylglucosaminidase, GLU Beta-glucosidase, CEL Cellulases, PHO Phosphatases, XYl Xylosidases