Drought is the main abiotic stress factor that negatively affects the growth, development, and
yield of plants. Salicylic acid (SA) is a plant growth regulator associated with stress tolerance in
plants. Exogenous application of SA prevents against stress dependent damage. Strigolactones
(SLs) are another phytohormone in plants, they are known to positively affect plant growth with
exogenous applications due to their potential to stimulate the tolerance system of plants under
stress conditions. The aim of this study is determine to SA and GR24 effects on the negative
impacts of drought stress on tomato “Full F1” seedlings, which is the most preferred commercial
variety by professional farmers in Çanakkale (Turkey), based on physiological [(shoot-root
length, biomass, relative water content (RWC), specific leaf area (SLA), total chlorophyll content
(SPAD)] and biochemical parameters [Total protein amount, glutathione reductase activity (GR),
catalase activity (CAT), peroxidase activity (POX), ascorbate peroxidase activity (APX),
hydrogen peroxide amount (H2O2), lipid peroxidation amount (TBARS)]. Fourty-five days old
seedlings kept five days for acclimation, then the seedlings were treated with exogenous GR24
(0.015 mM) and SA (0.1 mM) applications. According to our results, Full F1 tomato variety was
adversely affected by short-term drought stress. However, especially SA+GR24 application
reduced lipid peroxidation by regulating antioxidant capacity and increased drought tolerance of
this cultivar. In this context, it can be said that the combined use of these phytohormones can be
used to protect the Full F1 tomato variety from drought stress damage.
Primary Language | English |
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Subjects | Structural Biology |
Journal Section | Biyoloji / Biology |
Authors | |
Early Pub Date | February 24, 2023 |
Publication Date | March 1, 2023 |
Submission Date | September 22, 2022 |
Acceptance Date | December 6, 2022 |
Published in Issue | Year 2023 Volume: 13 Issue: 1 |