TY  - JOUR
T1  - Sorgum (Sorghum bicolor L.)’da sülfat taşıyıcı (SULTR) genlerin kuraklık stresi altında ifadelerinin belirlenmesi
TT  - Expression profiles of sorghum (Sorghum bicolor L.) SULTR genes under drought stress
AU  - Akbudak, M. Aydın
PY  - 2018
DA  - April
DO  - 10.29136/mediterranean.393096
JF  - Mediterranean Agricultural Sciences
PB  - Akdeniz University
WT  - DergiPark
SN  - 2528-9675
SP  - 67
EP  - 70
VL  - 31
IS  - 1
LA  - tr
AB  - Küreselısınmadan kaynaklanan iklim değişikleri nedeniyle kuraklık, özellikle son 20yılda tarımsal üretimi kısıtlayan en önemli problem haline gelmiştir.Bitkilerin su yetersizliği şartlarına uyum sağlamalarına imkân sağlayacakmekanizmaların anlaşılması, kuraklık nedeniyle meydana gelen verim kayıplarınaçözüm bulunması için oldukça önemlidir. Kükürt ve kükürt içeren bileşikler,bitkilerin kuraklık dâhil pek çok stres koşuluyla mücadele etmesinde çeşitli fonksiyonlarasahiptirler. Arabidopsis thaliana’ da12 adet sülfat (SO4-2) taşıyıcı (SULTR) gentanımlanmış olup, bu genler kodladıkları proteinlerin aminoasit dizilerindeki benzerliklergöz önüne alınarak dört gruba ayrılmışlardır. SULTR proteinleri bitkilerde sülfatıntopraktan alınmasında ve bitki içerisinde taşınmasında çeşitli görevler üstlenmektedirler.Bu çalışmada sorgum (Sorghum bicolorL.) SULTR genlerinin (SbSULTR)kuraklık şartlarındaki ifadeleri incelenmiştir. Yapılan gen ifade analizleri, kuraklıkstresi altında yapraklarda beş, köklerde ise altı SbSULTR geninin ifadesindeki artışa karşın, yapraklarda üç,köklerde ise iki SbSULTR genininifadesinin azaldığını göstermiştir. SbSULTR4geninin yapraklardaki ifadesinde yaklaşık yedi katlık bir artış tespitedilmiştir. Elde edilen sonuçlar, kuraklık koşulları altında SbSULTR genlerinin ifadesinin büyükçoğunlukla arttığına ve sülfür içeren bileşiklerin sorgumun kuraklık ilemücadelesinde görev aldığına işaret etmektedir.
KW  - Sorgum
KW  - Kuraklık
KW  - SULTR genleri
KW  - Gen ifadesi
KW  - Sülfat
N2  - Due to climate changes arising from global warming, drought has become a major problem restricting agricultural production for the last 20 years. Understanding mechanisms that help plants to get adjusted water deficiency is important to come up with yield loss on account of drought. Sulfur and sulfur-containing compounds have significant roles in plants to fight with several stress conditions including drought. Twelve sulfate transporter (SULTR) genes were initially identified in Arabidopsis thaliana and subdivided into four groups based on their protein sequence similarities. SULTR proteins have various functions in plants including sulfate uptake from soil and transportation of sulfate in plants. Expression profiles of SbSULTR genes in sorghum under drought condition were investigated in this study. Gene expression analyses showed that five SbSULTR genes in leaves and six in roots were up-regulated while three SbSULTR genes in leaves and two genes in roots were down-regulated. Approximately, seven fold up-regulation was detected in SbSULTR4 in leaves. Consequently, results revealed that SULTR genes were mainly up-regulated under drought conditions, and sulfur containing compounds got employed in sorghum to battle drought.
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UR  - https://doi.org/10.29136/mediterranean.393096
L1  - https://dergipark.org.tr/en/download/article-file/441040
ER  -