TITLE:
Effects of Plant Growth Promoting Rhizobacteria (PGPR) on In Vitro Bread Wheat (Triticum aestivum L.) Growth Parameters and Biological Control Mechanisms
AUTHORS:
Benderradji Laid, Kellou Kamel, Ghadbane Mouloud, Salmi Manel, Saibi Walid, Benmahammed Amar, Bouzerzour Hamenna, Brini Faiçal
KEYWORDS:
Bread Wheat, Biological Control, Endemic Plants, Fusarium culmorum, PGPR
JOURNAL NAME:
Advances in Microbiology,
Vol.6 No.9,
August
11,
2016
ABSTRACT: Three endemic plants rhizosphere (Astragalus gombo Coss. & Dur., Daucus sahariensis Murb., Ononis angustissima Lam.), were used
for actinomycetes isolation. Ninety-three (93) isolates have been screened to evaluate
their antagonistic properties against phytopathogenic microorganisms and to determine
their biocontrol properties against Fusarium culmorum, especially responsible for several cereal diseases
like font’s seedlings, rust, and burn of ears. Four (04) isolates (D2, D5, D8, and
AST1) have been in vitro tested to determine PGPR effect and biocontrol characters of bread wheat (Triticum aestivum L.), Hidhab (HD) variety
cultivated in the Murashigue and Skoog (MS) culture medium. The aim of this study
is the evaluation of antagonistic isolates of pathogenic fungi F. culmorum, without and within commercial
fungicide (Tebuconazole, 60 g/l) solution. Our results showed clearly that these
isolates have a significant effect on seed germination and seedling growth. However,
results argue that these actinomycetes isolates show a very interesting activity
compared to the commercial fungicide. As a result, these bacteria isolates can be
used as biocontrol agents against Fusarium wilt disease of wheat, which have
a beneficial effect on growth parameters.