Bitkilerde Giberellik Asit Hormonunun Sentezi, Sinyal İletimi ve Tuz Stresi Altındaki Etkileri

Yıl 2020, Cilt: 15 Sayı: 1, 56 - 63, 26.06.2020

Burcu Seçkin Dinler Hatice Çetinkaya

Öz

Giberellik
asit (GA₃), bitkilerde büyüme ve gelişmeyi sağlayan önemli bir
hormondur. 1950’li yıllarda keşfedilmesi ile birlikte araştırmacıların ilgi
odağı olmaya başlamıştır. Günümüzde ise çevresel streslere olan cevapların
iyileştirilmesinde önemli rol oynadığı tespit edilmiştir. Literatür
incelendiğinde, giberellik asitin özellikle tuz stresi altındaki etkileri ile
ilgili çok sayıda makale yayınlandığı tespit edilmiştir. Ancak araştırmaların
büyük bir kısmı giberellik asitin bitkilere dışarıdan uygulanmasına yönelik
sonuçlar içermektedir. Ek olarak, moleküler tekniklerde yaşanan gelişmeler, az
sayıda olsa da bu hormonun sentez yolu, sinyal iletimi ve stres esnasındaki
tepkileri ile ilgili daha derin araştırmalar yapılmasına olanak sağlamıştır. Hem
ülkemizde hem de dünyada, artan çevresel stres ile baş etmede etkili olan bu
doğal hormonun bitkilerdeki stres cevaplarının iyileştirilmesi için
kullanılmasının oldukça önemli olduğu düşünülmektedir. Bu sebeple, çalışmada,
giberellik asitin literatürdeki önemi vurgulanmış ve konu ile ilgili önerilerde
bulunulmuştur. 

Anahtar Kelimeler

giberellik asit, DELLA, tuz stresi, , bitkisel hormon

Kaynakça

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