Journals / Türk Mikrobiyoloji Cemiyeti Dergisi / 2007 / Cilt: 37 - Sayı: 1

Influence of light intensity on nitrogenase activity and growth of cyanobacteria isolated from paddy fields

Işık şiddetinin çeltik tarlalarından izole edilen siyanobakterilerde üremeye ve nitrojenaz aktivitesine etkisi

Pages
5–10
Publication Date
2022-11-05
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

As for the growth of all genera, biomass was stimulated at initial period but increasing light intensity was repressed the biomass.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Samples were collected from paddy fields in Çorum- Osmancık area.
📊
Key Findings & Data:Moreover, in all genera while 600 lux light intensity was resulted in the highest nitrogenase activity, 900 lux light intensity was found to suppress the same activity more than 300 lux.
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Conclusion & Impact:As for the growth of all genera, biomass was stimulated at initial period but increasing light intensity was repressed the biomass.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Samples were collected from paddy fields in Çorum- Osmancık area. Nitrogen- free BG-II medium was used for the isolation of nitrogen fixing cyanobacteria. Acetylene reduction technique was used to determine the effect of light intensity on the nitrogenase activities of the cyanobacteria, which were identified at the genus level. Moreover, in all genera while 600 lux light intensity was resulted in the highest nitrogenase activity, 900 lux light intensity was found to suppress the same activity more than 300 lux. As for the growth of all genera, biomass was stimulated at initial period but increasing light intensity was repressed the biomass.

Özet

Örnekler, Çorum-Osmancık bölgesindeki çeltik alanlarından toplanmıştır. Azot fikse eden siyanobakterilerin izolasyonunda, azot içermeyen BG-II besiyeri kullanılmıştır. Cins düzeyinde tanımlanan siyanobakterilerin nitrojenaz aktiviteleri üzerine ışık şiddeti etkisinin tanımlanmasında asetilen redüksiyon tekniğinden yararlanılmıştır. Tüm cinslerde 600 lüks ışık şiddeti en yüksek nitrojenaz aktivitesine yol açarken, 900 lüks ışık şiddetinin, söz konusu aktiviteyi 300 lüks ışık şiddetinden daha fazla baskıladığı görülmüştür. Tüm cinslerin üremesi ise, başlangıçta artmış ancak artan ışık şiddetinde biyomas baskılanmıştır.

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Cite This Article

ÖKMEN, K. G., DÖNMEZ, G. (2022). Influence of light intensity on nitrogenase activity and growth of cyanobacteria isolated from paddy fields. Türk Mikrobiyoloji Cemiyeti Dergisi, Cilt: 37 - Sayı: 1, 5–10. https://ajindex.com/articles/635991

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