Journals / Düzce Üniversitesi Bilim ve Teknoloji Dergisi / 2021 / Cilt: 9 - Sayı: 1

Effects of Salicylic Acid Applications on Photosynthetic Activity in Cucumber Plants Under Salt Stress

Salisilik Asit Uygulamalarının Tuz Stresi Altındaki Hıyar Bitkilerinde Fotosentetik Aktivite Üzerindeki Etkileri

Pages
418–429
Publication Date
2022-10-12
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

As a result, it may be concluded that salicylic acid application improved salt tolerance in cucumber plants and it may be used for agricultural purposes.

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Objective & Hypothesis:The effects of the exogenous salicylic acid application on photosystem II activity were investigated in saltstressed (100 mM NaCl) cucumber (Cucumis sativus L.) genotype (Beith Alpha F1) through chlorophyll a fluorescence technique. 50 µM salicylic acid against 100 mM salt was applied to 10 day old cucumber seedlings for 5 days.
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Key Findings & Data:Chlorophyll a fluorescence measurements made at the end of the 5th day were evaluated.
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Conclusion & Impact:As a result, it may be concluded that salicylic acid application improved salt tolerance in cucumber plants and it may be used for agricultural purposes.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The effects of the exogenous salicylic acid application on photosystem II activity were investigated in saltstressed (100 mM NaCl) cucumber (Cucumis sativus L.) genotype (Beith Alpha F1) through chlorophyll a fluorescence technique. 50 µM salicylic acid against 100 mM salt was applied to 10 day old cucumber seedlings for 5 days. Chlorophyll a fluorescence measurements made at the end of the 5th day were evaluated. Salt stress inhibited electron movements both in donor and acceptor site of photosystem II in cucumber leaves. In addition, salt application led to the decreased level of active reaction centers, the accumulation of the reduced reaction centers, the decreased ability of quinoneA and plastoquinone to reduce and the increased thermal dissipation in cucumber leaves. Salicylic acid, on the other hand, ameliorated the adverse effect of salt stress on electron movements in donor and acceptor site of photosystem II in cucumber plants. Moreover, salicylic acid caused to the increased level of active reaction centers, the decreased level of accumulation of the reduced reaction centers, the increased ability of quinonA and plastoquinon to reduce and the decreased thermal dissipation in cucumber leaves. As a result, it may be concluded that salicylic acid application improved salt tolerance in cucumber plants and it may be used for agricultural purposes.

Özet

Tuz stresi (100 mM NaCl) altındaki hıyar (Cucumis sativus L.) genotipinde (Beith Alpha F1) ekzojen salisilik asit uygulamasının fotosistem II aktivitesi üzerindeki etkileri klorofil a fluoresansı tekniği yardımıyla araştırılmıştır. 10 günlük hıyar fidelerine 100 mM tuza karşı 50 µM salisilik asit 5 gün süreyle uygulanmıştır. 5. günün sonunda yapılan klorofil a fluoresansı ölçümleri değerlendirilmiştir. Tuz stresi hıyar yapraklarında fotosistem II’nin hem donör hem de akseptör bölgesindeki elektron hareketlerini inhibe etmiştir. Ayrıca tuz stresinin hıyar bitkisinde aktif reaksiyon merkezi miktarını ve kinonA ile plastokinonun indirgenme yeteneğini azalttığı, indirgenmiş reaksiyon merkezlerinin birikimini ve ısı enerjisi kaybını artırdığı belirlenmiştir. Salisilik asit uygulaması ise hıyar bitkilerinde tuz stresinin fotosistem II’nin donör ve akseptör bölgesindeki elektron hareketleri üzerindeki olumsuz etkisini ortadan kaldırmıştır. Ek olarak salisilik asit uygulaması hıyar yapraklarındaki aktif reaksiyon merkezi miktarını ve kinonA ile plastokinonun indirgenme yeteneğini artırırken, indirgenmiş reaksiyon merkezi miktarını ve ısı enerjisi kaybını azaltmıştır. Sonuç olarak salisilik asidin hıyar yapraklarında tuz toleransını artırdığı ve bu yaklaşımın tarımsal amaçlarla kullanılabileceği söylenebilir.

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Cite This Article

DOĞRU, A., KÖSEOĞLU, S. T. (2022). Effects of Salicylic Acid Applications on Photosynthetic Activity in Cucumber Plants Under Salt Stress. Düzce Üniversitesi Bilim ve Teknoloji Dergisi, Cilt: 9 - Sayı: 1, 418–429. https://ajindex.com/articles/494171

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