Effects of Plant Growth Promoting Rhizobacteria (PGPR) Applications on Biochemical Activity and Enzyme Activity in Strawberries

Öz

Plant growth promoting rhizobacteria (PGPR), which have environmentally friendly properties, are important for their use as biofertilizers and biocontrol agents. The aim of this study was to determine the effects of single and combined applications of PGPR bacteria on maloninaldehyde (MDA), proline, superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) activities of leaves in Albion and Monterey strawberry varieties. Bacillus subtilis OSU-142 (B. subtilis OSU-142), Bacillus megaterium M3 (B. megaterium M3) and Paenibacillus polymyx (P. polymyx) were used as PGPR in the study. The effect of rhizobacteria varied according to strawberry varieties. Rhizobacteria applications showed positive effects on MDA, SOD and POD. However, rhizobacteria treatments did not have a significant effect on proline, while they showed a varying effect on CAT according to the varieties. In this study, significant results were obtained on the effects of strawberry and rhizobacteria application on biochemical activity and enzymatic activity. The results of this study may provide important clues for future studies on similar subjects.

Anahtar Kelimeler

• Strawberry
• enzyme activity
• antioxidant enzyme
• rhizobacteria
• PGPR

Bitki Büyümesini Teşvik Eden Rizobakteri (PGPR) Uygulamalarının Çileklerde Biyokimyasal Aktivite ve Enzim Aktivitesi Üzerine Etkileri

Öz

Çevre dostu özelliğe sahip olan bitki büyümesini teşvik eden rizobakteriler (PGPR), biyogübre ve biyokontrol ajanı olarak kullanımıyla önem arz etmektedir. Bu çalışmanın amacı, Albion ve Monterey çilek çeşitlerinde PGPR bakterilerinin tekli ve kombine uygulamalarının yaprakların maloninaldehit (MDA), prolin, süperoksit dismutaz (SOD), peroksidaz (POD) ve katalaz (CAT) aktiviteleri üzerine etkilerini belirlemektir. Çalışmada Bacillus subtilis OSU-142 (B. subtilis OSU-142), Bacillus megaterium M3 (B. megaterium M3) ve Paenibacillus polymyx (P. polymyx) PGPR olarak kullanılmıştır. Rizobakterilerin etkisi çeşitlere göre değişiklik göstemiştir. Rizobakteri uygulamaları MDA, SOD ve POD üzerinde olumlu etki göstermiştir. Ancak rizobakteri uygulamalarının prolin üzerinde önemli derecede bir etkisi görülmez iken CAT üzerinde ise çeşitlere göre değişen etki göstermiştir. Bu çalışmada, çilek ve rizobakteri uygulamasının biyokimyasal ve enzimatik aktivite üzerindeki etkileri konusunda çok önemli sonuçlar elde edilmiştir. Bu çalışmanın sonuçları gelecekte bu konuda yapılacak çalışmalar için önemli ipuçları sağlayabilir.

Anahtar Kelimeler

• Çilek
• enzim aktivitesi
• antioksidan enzim
• rizobakteri
• PGPR

Kaynakça

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