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Journals / Toprak Bilimi ve Bitki Besleme Dergisi / 2026 / Cilt: 9 Sayı: 1

Ferric reductase activity and production of phytosiderophore in fresh roots of rice varieties grown under iron deficiency conditions and chlorosis degrees in leaves

Demir noksanlığı şartlarında yetiştirilen çeltik çeşitlerinin taze köklerinde fitosiderofor üretimi ve ferrik redüktaz aktivitesi ile yapraklarında kloroz dereceleri

Ahmet Korkmaz(ONDOKUZ MAYIS ÜNİVERSİTESİ)0000-0001-5595-0618
Güney Akınoğlu(ONDOKUZ MAYIS ÜNİVERSİTESİ)0000-0003-4624-2876
Ayhan Horuz(ONDOKUZ MAYIS ÜNİVERSİTESİ)0000-0002-8338-3208
Pages
8–14
Publication Date
2021-06-17
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

According to these results, it was determined that the most susceptible variety to iron deficiency among the rice varieties examined in the study was Hamzadere rice variety.

📌 3 Key Takeaways

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Objective & Hypothesis:The aim of this study is to determine ferric reductase activity and production of phytosiderophore in fresh roots of rice varıeties grown under iron deficiency conditions and chlorosis degrees in leaves In order to determine phytosiderophore secretion production and ferric reductase activity, rice varieties were grown in sand culture by applying iron-free nutrient solution for 10 days.
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Key Findings & Data:In addition, a 5×2 factorial trial design was conducted to determine the degree of chlorosis and the tolerance index value to chlorosis in rice varieties.
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Conclusion & Impact:According to these results, it was determined that the most susceptible variety to iron deficiency among the rice varieties examined in the study was Hamzadere rice variety.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Çeltik çeşidi · Fitosiderofor · Ferrik redüktaz aktivitesi

Abstract

The aim of this study is to determine ferric reductase activity and production of phytosiderophore in fresh roots of rice varıeties grown under iron deficiency conditions and chlorosis degrees in leaves In order to determine phytosiderophore secretion production and ferric reductase activity, rice varieties were grown in sand culture by applying iron-free nutrient solution for 10 days. In addition, a 5×2 factorial trial design was conducted to determine the degree of chlorosis and the tolerance index value to chlorosis in rice varieties. In this study, a nutrient solution containing Fe-EDDHA in doses of 0 and 45 µM Fe was applied to 5 different rice varieties. Among the rice varieties, the most phytosiderophores produced in fresh roots were found in the Hamzadere rice variety. The difference between the remaining varieties in terms of phytosiderophore production in the roots was statistically insignificant and was found to be close to each other. Among the rice varieties grown under iron deficiency conditions, it was determined that Ronaldo variety had the highest ferric reductase activity in fresh roots, whereas the lowest variety was Biga İncisi variety. The degree of chlorosis observed in the leaves of Hamzadere and Ronaldo rice varieties was found to be severe, and the tolerance index values of these varieties for iron deficiency were calculated as 41.24% and 41.52%, respectively. According to these results, it was determined that the most susceptible variety to iron deficiency among the rice varieties examined in the study was Hamzadere rice variety.

Özet

Bu çalışmanın amacı, demir noksanlığı şartlarında yetiştirilen çeltik çeşitlerinin taze köklerinde fitosiderofor üretimi ve ferrik redüktaz aktivitesi ile yapraklarında kloroz derecelerini belirlemektir. Fitosiderofor salgısı üretimi ve ferrik redüktaz aktivitesi belirlemek amacıyla çeltik çeşitleri 10 gün süreyle demirsiz besin çözeltisi uygulayarak kum kültüründe yetiştirilmiştir. Ayrıca, kloroz derecesinin ve kloroza tolerans indeks değerinin belirlenmesi amacıyla 5×2 faktöriyel deneme deseninde çalışma yürütülmüş olup, bu çalışmada 5 farklı çeltik çeşidine 0 ve 45 µM Fe dozlarında Fe-EDDHA içeren besin çözeltisi uygulanmıştır. Taze kökte üretilen fitosiderofor miktarı en yüksek olan çeşidin Hamzadere çeltik çeşidi olduğu görülmüştür. Köklerde fitosiderofor üretimleri bakımından geri kalan diğer çeşitler arası fark istatistiksel olarak önemsiz olup, birbirlerine yakın bulunmuştur. Demir noksanlığı şartlarında yetiştirilen çeltik çeşitleri arasında taze köklerde ferrik redüktaz aktivitesi en yüksek olan çeşidin Ronaldo çeltik çeşidi olduğu; buna karşın, en düşük çeşidin ise Biga incisi çeltik çeşidi olduğu görülmüştür. Hamzadere ve Ronaldo çeltik çeşitlerinin yapraklarında gözlenen kloroz derecesi şiddetli olup, bu çeşitlerin demir noksanlığına tolerans indeks değerleri sırasıyla %41.24 ve %41.52 olarak hesaplanmıştır. Bu sonuçlara göre, araştırmada incelenen çeltik çeşitleri arasında demir noksanlığına en hassas çeşidin Hamzadere çeltik çeşidi olduğu belirlenmiştir.

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Cite This Article

Korkmaz, A., Akınoğlu, G., Horuz, A. (2021). Ferric reductase activity and production of phytosiderophore in fresh roots of rice varieties grown under iron deficiency conditions and chlorosis degrees in leaves. Toprak Bilimi ve Bitki Besleme Dergisi, Cilt: 9 Sayı: 1, 8–14. https://doi.org/10.33409/tbbbd.901788

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