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191747

EFFICACY OF THREE OF THE MOST EFFECTIVE FACULTATIVE OLIGOTROPHIC PUTATIVEN2-FIXING BACTERIAL STRAINS IN CONTROLLING DAMPING-OFF DISEASE OF TWO CAUSABLE PATHOGENIC FUNGI IN TOMATO.

Article

Last updated: 28 Dec 2024

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Subjects

-

Tags

Agricultural Economics and Management Sciences

Abstract

Complete identification was made for three strains of the facultative
putative N2-fixing bacteria using the 16s DNA sequencing studies and
by detailed conventional API kit and other possible genetic
determination. The efficacy of Bacillus subtilis subsp. spizizenii strain
NRRL B-23049T (S4), Naxobacter varians strain CCUG 35299 (S5)
and Bacillus megatherium strain IAM 13418. (S6), their potency against
two pathogenic fungi causing damping-off and their effect on N-content
of tomato plant. Inoculated tomato plants with any of the three bacterial
strains, each alone or together, in presence of 1/3 N-recommended dose,
significantly increased N- content and yield production. The fungi
infested plants (Py. altimum and R. solani) showed pronounced
decreases in yield and N-content. Incorporation of the three putative N2-
fixers antagonizer strains partially alleviated the adverse effect of any of
the infested fungi. The presence of the three antagonizer strains together
increased the defense mechanism principles of plants like PO, PPO and
phenol content. In case of the presence of the three antagonizers and 1/3
N-dose, survived plants reached 100% while other treatments showed
fluctuated estimates between 20 and 96.7% due to the treatment and the
plant used.

DOI

10.21608/fjard.2016.191747

Keywords

Oligotrophs, Oligonitrotrophs, Oligocarbotrophs, Putative N2-Fixers, biocontrol agents

Authors

First Name

S.A

Last Name

Abd elaziz

MiddleName

-

Affiliation

Agricultural of Microbiology Department, Faculty of Agriculture, Fayoum University.

Email

-

City

-

Orcid

-

First Name

K.A.

Last Name

Elbanna

MiddleName

-

Affiliation

Agricultural of Microbiology Department, Faculty of Agriculture, Fayoum University.

Email

-

City

-

Orcid

-

First Name

R.M

Last Name

El-Shahawy

MiddleName

-

Affiliation

Agricultural of Microbiology Department, Faculty of Agriculture, Fayoum University.

Email

-

City

-

Orcid

-

Volume

30

Article Issue

2

Related Issue

27348

Issue Date

2016-07-01

Receive Date

2021-08-29

Publish Date

2016-07-01

Page Start

53

Page End

68

Print ISSN

1110-7790

Online ISSN

2805-2528

Article File

FJARD_Volume 30_Issue 2_Pages 53-68.pdf

PDF . 447.1kB

Link

https://fjard.journals.ekb.eg/article_191747.html

Detail API

https://fjard.journals.ekb.eg/service?article_code=191747

Order

4

Type

Research articles.

Type Code

1,920

Publication Type

Journal

Publication Title

Fayoum Journal of Agricultural Research and Development

Publication Link

https://fjard.journals.ekb.eg/

MainTitle

EFFICACY OF THREE OF THE MOST EFFECTIVE FACULTATIVE OLIGOTROPHIC PUTATIVEN2-FIXING BACTERIAL STRAINS IN CONTROLLING DAMPING-OFF DISEASE OF TWO CAUSABLE PATHOGENIC FUNGI IN TOMATO.

Details

Type

Article

Created At

23 Jan 2023