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Table 1 Detailed morphological, biochemical, and physiological characteristics of bacterial isolates obtained from Cholistan desert used in the present study

From: Thermotolerant PGPR consortium B3P modulates physio-biochemical and molecular machinery for enhanced heat tolerance in maize during early vegetative growth

Characteristics

B. subtilis

AH-08

B. cereus AH-67

B. badius

SH-16

P. koreensis SH-29

Characteristics

B. subtilis AH-08

B. cereus AH-67

B. badius SH-16

P. koreensis SH-29

Isolation from/ medium

Soil/ L. B

Soil/ L. B

Soil/L. B

Soil/L. B

KOH test

-

-

-

-

Colony color / edges/elevation

Off-white/ undulate/flat elevation

Cottony White/entire/flat

Pale-Yellow/ filamentous/flat

White/lobate/flat

Catalase

 + 

 + 

 + 

 + 

Colony morphology/size

Gummy, Wrinkled/ medium

Filamentous/ large

Round/ Large

Wrinkled/ medium

Biofilm

Strong

Intermediate

intermediate

Week

Cell shape/motility

Rod/ highly motile

Rod/ highly motile

Rod/ motile

Rod/ motile

Temperature tolerance

50 °C

50 °C

50 °C

50 °C

16S rRNA accession

MZ779051

MZ779053

ON340744

MZ779057

Salt tolerance

7.5%

2.5%

7.5%

7.5%

Gram staining

Positive

Positive

Positive

Negative

Siderophore Production

 + 

-

-

 + 

P-Solubilization (zone diameter mm)

 + (5)

 + (4)

 + (3)

 + (1.83)

Zinc Solubilization

-

 + (2.21)

 + 

 + (1.5)

Ca- Solubilization (zone diameter mm)

 + 

 + (4.5)

 + 

-

IAA Production (ppm)

 +  + (50)

 +  + (100)

 +  + (75)

 + 

Antibiotic Resistance

 Gentamycin (10 mg)

S

S

S

S

Streptomycin (10 mg)

R

R

R

R

 Rifampicin (5 mg)

R

R

R

R

Ciprofloxacin (5 mg)

S

S

S

S

 Nalidixic acid (30 mg)

MS

MS

MS

MS

Kanamycin (30 mg)

R

R

R

R

 Ceftriaxone (30 mg)

S

S

S

S

Neomycin (10 mg)

S

S

S

S

 Amikacin (30 mg)

R

R

R

R

     

Carbon source utilization and enzymatic reaction

 ONPG

 + 

 + 

 + 

 + 

SODIUM CITRATE

 + 

-

-

 + 

 SODIUM MALONATE

-

-

-

 + 

LYSINE DECORBOXYLASE

 + 

 + 

 + 

 + 

 ARGININE DIHYDROLASE

-

-

-

-

ORNITHINE DECORBOXYLASE

-

-

-

-

 H2S PRODUCTION

-

-

-

-

UREA HYDROLYSIS

 + 

-

 + 

 + 

 TRYPTOPHANE DEAMINASE

-

-

-

 + 

INDOLE

-

-

-

-

 ACETION

 + 

 + 

 + 

 + 

GELATIN HYDROLYSIS

 + 

 + 

 + 

 + 

 ACID FROM GLUCOSE

 + 

 + 

 + 

 + 

NO3/N2 PRODUCTION

 + 

 + 

 + 

-/ + 

 ACID FROM MALTOSE

 + 

 + 

 + 

 + 

ACID FROM SUCROSE

 + 

 + 

 + 

 + 

 ACID FROM MANNITOL

 + 

-

 + 

 + 

ACID FROM ARABINOSE

 + 

 + 

 + 

 + 

 ACID FROM RHAMNOSE

 + 

 + 

 + 

 + 

ACID FROM SORBITOL

 + 

-

 + 

 + 

 ACID FROM INOSITOL

-

-

 + 

 + 

ACID FROM ADONITOL

-

-

-

-

 ACID FROM MELIBIOSE

 + 

 + 

-

 + 

ACID FROM RAFFINOSE

-

-

 + 

-