The effects of strigolactones on some biochemical traits in calcified media on grapevine

Plants are stressed in different ways when they are in environments unsuitable for them. Among these stresses, abiotic factors are common. Calcified soil is also a stress factor. In this type of soil, there are problems with the nutrient intake of the plant, nutrient deficiencies, or toxicity. In a stress environment, plants try to survive by reacting differently. One of these reactions is that plants increase the synthesis of phenolic compounds. These compounds perform various physiological functions in adapting to environmental problems. It is known that the reactions of plants to stress are associated with endogenous hormones. One of these hormones is strigolactone (SL), which is produced in plant roots and introduced as a new generation of hormones. In this study, the effects of SL applications in grapevine grown in calcified environments were examined with regard to the content of phenolic compounds and mineral element intake. ‘Hasandede’ grape variety grafted on 1103 P American rootstock were grown in environments containing control, 10% and 25% calcium oxide (CaO) and applied with SL (control, 1, 3 and 5 μM) in different doses. Total phenolic compounds were found statistically much higher especially in the majority of plants applied with 3 μM and 5 μM SL is considered to be the effect of SLs in stress prevention. It was concluded that mineral compounds intakes generally responded positively to SL applications. These results are considered to prove the effects of SLs on plant nutrition physiology and stress tolerance.