Kamışsı Yumak Bitkisinde Tuzluluk Toleransının Fizyolojik ve Biyokimyasal Mekanizması: Tuz Stresine Farklı Hassasiyet Gösteren Çeşitlerin Karşılaştırmalı Analizi

Shiva Sadıghfard; Gürkan Demirkol

EN TR

Physiological and Biochemical Mechanisms of Salinity Tolerance in Tall Fescue: A Comparative Analysis of Cultivars Differing in Salinity Tolerance

Abstract

Salinity stress causes an increasingly pervasive threat to agricultural productivity, including turf and forage grasses. This study aimed to reveal how salinity stress affects the physiological and biochemical levels of Festuca arundinacea (tall fescue) cultivars differing in salinity tolerance. The salinity stress treatments were assessed through the evaluation of growth measures, biochemical profiles, and the activity of antioxidative enzymes in four tall fescue cultivars having different salinity stress tolerance (tolerant, moderate-high, moderate-low, and sensitive). The results revealed that the tolerant cultivar named ‘Titan RX’ (tolerant cv.) showed increased root growth and maintained physiological status under salinity stress conditions. This was attributed to the activation of the biosynthesis for the free proline and the antioxidative status (total phenolic and flavonoid contents, DPPH activity, enzymes of CAT, and GR). The other cultivars exhibited lower values in these parameters compared to the tolerant cv., indicating their lesser capacity for salinity tolerance. The results indicated that the cv. ‘Titan RX’ could potentially be utilized to generate tall fescue crops that can cope with salinity stress conditions.

Keywords

Kamışsı Yumak Bitkisinde Tuzluluk Toleransının Fizyolojik ve Biyokimyasal Mekanizması: Tuz Stresine Farklı Hassasiyet Gösteren Çeşitlerin Karşılaştırmalı Analizi

Öz

Bu çalışma, farklı tuzluluk toleransına sahip Festuca arundinacea (kamışsı yumak) çeşitlerinde tuzluluk stresinin fizyolojik ve biyokimyasal düzeydeki etkilerini ortaya koymayı amaçlamıştır. Tuzluluk stresi uygulamaları, farklı tuzluluk stres toleransına (toleranslı, orta-yüksek, orta-düşük ve hassas) sahip dört kamışsı yumak çeşidinde büyüme parametreleri, biyokimyasal profiller ve antioksidan enzimlerin aktivitesinin değerlendirilmesi yoluyla değerlendirilmiştir. Sonuçlar, ‘Titan RX’ adlı tolerant çeşidin tuzluluk stresi koşullarında kök büyümesini artırdığını ve fizyolojik durumunu koruduğunu ortaya koymuştur. Bu durum, serbest prolin biyosentezinin ve antioksidan mekanizmaların (toplam fenolik ve flavonoid içerikleri, DPPH aktivitesi, CAT ve GR enzimleri) aktivasyonu ile ilişkilendirilmiştir. Diğer çeşitler bu parametrelerde tolerant çeşide kıyasla daha düşük değerlere sahip olmuş ve sonuçlar bu çeşitlerde tuzluluk toleransı kapasitelerinin daha sınırlı olduğunu göstermiştir. Elde edilen bulgular, ‘Titan RX’ çeşidinin, tuzluluk stresine dayanıklı kamışsı yumak bitkileri geliştirmek için potansiyel bir kaynak olarak kullanılabileceğini göstermektedir.

Anahtar Kelimeler

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Details

Primary Language

Turkish

Subjects

Crop and Pasture Biochemistry and Physiology

Journal Section

Research Article

Authors

Shiva Sadıghfard ^*
0000-0003-0617-4856
Türkiye

Gürkan Demirkol
0000-0003-0033-8039
Türkiye

Early Pub Date

June 10, 2025

Publication Date

July 4, 2025

Submission Date

January 20, 2025

Acceptance Date

May 7, 2025

Published in Issue

Year 2025 Volume: 28 Number: 4

IZ

https://izlik.org/JA42XH56KW

Cite

RIS / Bibtex

APA

Sadıghfard, S., & Demirkol, G. (2025). Kamışsı Yumak Bitkisinde Tuzluluk Toleransının Fizyolojik ve Biyokimyasal Mekanizması: Tuz Stresine Farklı Hassasiyet Gösteren Çeşitlerin Karşılaştırmalı Analizi. Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi, 28(4), 1043-1053. https://izlik.org/JA42XH56KW