Su Stresi Koşullarında Bitkilerde Gözlenen Değişimler

Kuraklık stresine karşı tolerans gösterebilen bitki özelliklerinin belirlenmesi ve yüksek ürün verme özelliğine sahip bitki türleri üzerine yapılan çalışmalar son yıllarda önem kazanmıştır. Islah çalışmalarında kuraklık stresine karşı dayanıklı bitki türlerinin yetiştirilmesinde ve seçiminde, bitkilerin, biyokimyasal, genetiksel ve fizyolojik mekanizmalarındaki değişimlerin oldukça iyi bilinmesi gerekir. Bitkilerin su stresine karşı verdiği tepkiler beş alt kategoride incelenmiştir. Bunlar, (1) morfolojik ve fizyolojik değişimler, (2) sitolojik değişimler, (3) biyomoleküler cevaplar, (4) hormonal cevaplar, ve (5) genetiksel cevaplardır. Bu çalışmanın amacı bitkilerin su stresine verdiği tepkileri özetlemek ve bitkilerde gözlenen değişimleri sınıflandırarak daha iyi anlaşılmasını sağlayarak strese karşı dirençli biyoteknolojik ürün geliştirme yolunda çalışmalara katkı sağlamaktır.

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