Efficacy of 24-epibrassinolide in cotton (Gossypium hirsutum L.) under salt stress

Hakan Altunlu; Yonca Surgun Acar; Filiz Altan; Atilla Levent Tuna; Betül Bürün

Makale detayları

Efficacy of 24-epibrassinolide in cotton (Gossypium hirsutum L.) under salt stress

Yazarlar:

Hakan Altunlu | Yonca Surgun Acar | Filiz Altan | Atilla Levent Tuna | Betül Bürün

Yayıncı:

Ege University

Ana Başlıklar:

Tarımda Bitki Biyokimyası ve Fizyolojisi

Dergi:

Ege Üniversitesi Ziraat Fakültesi Dergisi Vol.61 Issue 3, pp.367-381

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001327389

pISSN:

1018-8851

Anahtar kelimeler:

Özet:

 Objective: The effect of 24-epibrassinolide EBR application against NaCl stress in three cotton Gossypium hirsutum L. cultivars Nazilli 84-S, Carmen, White Gold 119 was investigated. Material and Methods: After the seeds were treated with 3 µM EBR solution for 24 h, they were sowed in pots and watered with Hoagland nutrient solution containing 75 and 150 mM NaCl. Plant dry weight, membrane permeability, stomatal density, relative water content, photosynthetic pigment contents, antioxidative enzyme activities, and DNA content were determined in the plants harvested at the beginning of the flowering period. Results: EBR treatments reduced the decrease in dry weights, relative water content, and stomatal density of plants. Membrane permeability increased with increasing salt concentration in all three varieties, but this increase decreased with the EBR treatment. Antioxidative enzyme activities SOD and POD increased significantly with NaCl application. NaCl application reduced stoma-guard cell number, photosynthetic pigment and DNA content, but this decrease was improved by EBR treatment. Conclusion: These results show a salt-dependent increase in antioxidative enzyme activity in cotton varieties and reveal the stress-relieving effects of EBR by helping to maintain water potential and membrane integrity in cotton plants under salt stress.

 Objective: The effect of 24-epibrassinolide EBR application against NaCl stress in three cotton Gossypium hirsutum L. cultivars Nazilli 84-S, Carmen, White Gold 119 was investigated. Material and Methods: After the seeds were treated with 3 µM EBR solution for 24 h, they were sowed in pots and watered with Hoagland nutrient solution containing 75 and 150 mM NaCl. Plant dry weight, membrane permeability, stomatal density, relative water content, photosynthetic pigment contents, antioxidative enzyme activities, and DNA content were determined in the plants harvested at the beginning of the flowering period. Results: EBR treatments reduced the decrease in dry weights, relative water content, and stomatal density of plants. Membrane permeability increased with increasing salt concentration in all three varieties, but this increase decreased with the EBR treatment. Antioxidative enzyme activities SOD and POD increased significantly with NaCl application. NaCl application reduced stoma-guard cell number, photosynthetic pigment and DNA content, but this decrease was improved by EBR treatment. Conclusion: These results show a salt-dependent increase in antioxidative enzyme activity in cotton varieties and reveal the stress-relieving effects of EBR by helping to maintain water potential and membrane integrity in cotton plants under salt stress.

 Objective: The effect of 24-epibrassinolide EBR application against NaCl stress in three cotton Gossypium hirsutum L. cultivars Nazilli 84-S, Carmen, White Gold 119 was investigated. Material and Methods: After the seeds were treated with 3 µM EBR solution for 24 h, they were sowed in pots and watered with Hoagland nutrient solution containing 75 and 150 mM NaCl. Plant dry weight, membrane permeability, stomatal density, relative water content, photosynthetic pigment contents, antioxidative enzyme activities, and DNA content were determined in the plants harvested at the beginning of the flowering period. Results: EBR treatments reduced the decrease in dry weights, relative water content, and stomatal density of plants. Membrane permeability increased with increasing salt concentration in all three varieties, but this increase decreased with the EBR treatment. Antioxidative enzyme activities SOD and POD increased significantly with NaCl application. NaCl application reduced stoma-guard cell number, photosynthetic pigment and DNA content, but this decrease was improved by EBR treatment. Conclusion: These results show a salt-dependent increase in antioxidative enzyme activity in cotton varieties and reveal the stress-relieving effects of EBR by helping to maintain water potential and membrane integrity in cotton plants under salt stress.

 Amaç: Üç pamuk Gossypium hirsutum L. çeşidinde Nazilli 84-S, Carmen, Beyaz Altın-119 NaCl stresine karşı 24-epibrassinolid EBR uygulamasının etkisi araştırılmıştır. Materyal ve Yöntem: Pamuk tohumları 3 µM EBR çözeltisi ile 24 saat muamele edildikten sonra saksılara ekilmiş ve 75, 150 mM NaCl içeren Hoagland besin çözeltisiyle sulanmıştır. Çiçeklenme dönemi başlangıcında hasat edilen bitkilerde kuru ağırlık, membran geçirgenliği, stoma yoğunluğu, nispi su kapsamı, antioksidatif enzim aktiviteleri, fotosentetik pigment ve DNA kapsamları belirlenmiştir. Araştırma Bulguları: EBR uygulaması bitkilerin kuru ağırlıkları, nisbi su kapsamı ve stoma yoğunluğunda meydana gelen düşüşü azaltmıştır. Her üç çeşitte de tuz konsantrasyonunun artması ile membran geçirgenliği artmış, ancak bu artış EBR uygulaması ile azalmıştır. NaCl uygulaması ile antioksidatif enzim aktiviteleri SOD ve POD önemli oranda artmıştır. NaCl uygulaması stoma-kilit hücre sayısı, pigment kapsamlarını ve DNA içeriğini azaltmış ancak bu azalma EBR uygulaması ile hafifletilmiştir. Sonuç: Bu sonuçlar, pamuk çeşitlerinde tuza bağlı olarak antioksidatif enzim aktivitesinde artışı göstermekte ve EBRnin tuz stresi altındaki pamuk bitkisinde su potansiyeli ve membran bütünlüğünün korunmasına yardımcı olarak stresi hafifletici etkilerini ortaya koymaktadır.

Makale detayları

Efficacy of 24-epibrassinolide in cotton (Gossypium hirsutum L.) under salt stress

Yazarlar:

Hakan Altunlu | Yonca Surgun Acar | Filiz Altan | Atilla Levent Tuna | Betül Bürün

Yayıncı:

Ege University

Ana Başlıklar:

Tarımda Bitki Biyokimyası ve Fizyolojisi

Dergi:

Ege Üniversitesi Ziraat Fakültesi Dergisi Vol.61 Issue 3, pp.367-381

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001327389

pISSN:

1018-8851

Brassinosteroid

cotton

Gossypium hirsutum

SalinityBrassinosteroid

pamuk

Gossypium hirsutum

tuzluluk

Sayı

Makale detayları

Yazarlar: Hakan Altunlu | Yonca Surgun Acar | Filiz Altan | Atilla Levent Tuna | Betül Bürün

Yayıncı: Ege University

Ana Başlıklar: Tarımda Bitki Biyokimyası ve Fizyolojisi

Dergi: Ege Üniversitesi Ziraat Fakültesi Dergisi Vol.61 Issue 3, pp.367-381

Belge Tipi: Makale

Yayın Tarihi: 9/2024

Belge Dili: Türkçe

Document ID (Org No.): 2001327389

pISSN: 1018-8851

Sayı

Yazarlar:

Hakan Altunlu | Yonca Surgun Acar | Filiz Altan | Atilla Levent Tuna | Betül Bürün

Yayıncı:

Ege University

Ana Başlıklar:

Tarımda Bitki Biyokimyası ve Fizyolojisi

Dergi:

Ege Üniversitesi Ziraat Fakültesi Dergisi Vol.61 Issue 3, pp.367-381

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001327389

pISSN:

1018-8851