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Optimization of cellulase and chitinase enzymes production by plant growth promoting rhizobacteria

Article

Last updated: 28 Dec 2024

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Abstract

The current study aimed to optimize the production of cellulase and chitinase enzymes by plant growth promoting rhizobacteria (PGPR). Bacteria were pre-isolated from soil and identified as; Pseudomonas fluorescens NBRC (KW1), Serratia liquefaciens ATCC 27592 (EW1), Bacillus subtilis SBMP4 (EF1) and B. megaterium NBRC 15308 (TF2). The effect of different growth parameters including; pH, temperature, carbon and nitrogen sources, and incubation periods were optimized for production of cellulase and chitinase enzymes by the selected bacterial strains. Three strains mainly, B. subtilis SBMP4, S. liquefaciens ATCC 27592 and P. fluorescens NBRC) recorded positive results for cellulase production. B. subtilis SBMP4 (EF1) and S. liquefaciens ATCC 27592 (EW1) strains demonstrated significant ability to produce cellulase at 40°C, while P. fluorescens NBRC (KW1) strain showed the maximum enzyme production at 30°C. Carboxymethyl cellulose gave the highest cellulase production compared to the other carbon sources. Chitinase enzyme was optimally produced by B. subtilis SBMP4 and S. liquefaciens ATCC 27592 strains under primary screening. B. subtilis SBMP4 had the strongest ability to produce chitinase at 40oC, while S. liquefaciens ATCC 27592 at 30oC. The optimum pH observed was at pH 6.0 to get the maximum chitinase production by S. liquefaciens ATCC 27592. Potassium nitrate (KNO3) as an inorganic nitrogen source presented the highest chitinase production by B. subtilis SBMP4, whereas yeast extract demonstrated significant chitinase production by S. liquefaciens ATCC 27592.

DOI

10.21608/nrmj.2020.73437

Keywords

Pseudomonas sp, Serratia sp, Bacillus sp, Chitinase, Cellulase

Authors

First Name

Alaa

Last Name

Fathalla Mohammed

MiddleName

-

Affiliation

Department of Agriculture Botany, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt

Email

alaa.fathalla@yahoo.com

City

-

Orcid

0000-0003-3115-8698

Volume

4

Article Issue

1

Related Issue

32632

Issue Date

2020-02-01

Receive Date

2020-02-04

Publish Date

2020-02-01

Page Start

641

Page End

652

Print ISSN

2537-0286

Online ISSN

2537-0294

Link

https://nrmj.journals.ekb.eg/article_227722.html

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https://nrmj.journals.ekb.eg/service?article_code=227722

Order

227,722

Type

Original Article

Type Code

2,265

Publication Type

Journal

Publication Title

Novel Research in Microbiology Journal

Publication Link

https://nrmj.journals.ekb.eg/

MainTitle

Optimization of cellulase and chitinase enzymes production by plant growth promoting rhizobacteria

Details

Type

Article

Created At

23 Jan 2023