The Effect of Methyl Jasmonate Applications on Some Growth Parameters in Strawberry (Fragaria x ananassa “Camarosa”) Plant under Cadmium Stress

Abstract

Ağır metaller bitki için temel besin maddesi olmayan genellikle toksik etkiye sahip elementlerdirler. Kadmiyum bitki büyüme ve gelişmesini ciddi sınırlandırabilen ve çevreye olumsuz etkileri olduğu iyi bilinen en önemli toksik metallerden biridir. Bitkisel hormonlar, bitki bünyesindeki hormonların üretim, dağıtım veya sinyal çevrimini değiştirerek çevre koşullarına karşı değişen tepkiyi vermesi yanında bitki büyüme ve gelişmesini düzenleyen küçük moleküllerdirler. Jasmonatlar (JAs) birçok ileri bitki süreçlerini düzenlemekte ve olumsuz çevreresel stres faktörlerine karşı bitki savunma mekanizmasında aktif bir rol oynamaktadırlar. Bu çalışmada, ağır metal (kadmiyum) stresinde dışsal metil jasmonat (MeJa) uygulamalarının çilek (Camarosa ) bitkisinde bazı büyüme parametreleri üzerine etkilerinin belirlenmesi hedeflenmiştir. Çalışmada kadmiyum konsantrasyonun artışına paralel olarak çilek bitkisinde incelenen büyüme parametrelerinde düşüş belirlenmiştir. Bununla birlikte, metil jasmonat uygulamalarının kadmiyum toksitesini hafiflettiği ve uygulama dozuna bağlı olarak çilek bitkisinde kök sayısı, kök ağırlığı, gövde ağırlığı ve yaprak alanında artış sağladığı belirlenmiştir. Elde edilen sonuçlar kadmiyum uygulamalarının çilek bitkisinin büyümesi üzerine olumsuz etkilerinin olduğu ve metil jasmonat uygulamalarının ise kadmiyum stresinin azaltılmasında önemli bir rol oynadığı belirlenmiştir. Anahtar kelimeler: Ağır metal toksitesi, kadmiyum, metil jasmonat, çilekThe Effect of Methyl Jasmonate Applications on Some Growth Parameters in Strawberry (Fragaria x ananassa "Camarosa") Plant under Cadmium Stress ABSTRACT: Heavy metals which are not the essential plant nutrients for plants generally have toxicity effect. Cadmium is one of the most important toxin metals well known to have a negative impact on the environment and can severely limit plant growth and development. Plant hormones are small molecules that regulate plant growth and development, as well as changing the production, distribution or signal cycle of the hormones within the plant, changing the environmental conditions. Jasmonates (JAs) regulate many advanced plant processes and play an active role in plant defense mechanisms against adverse environmental stress. The present study was aim to test the effect of exogenously applied methyl jasmonate (MeJa) on some growth parameters of strawberry (Camarosa cv.) plant exposed to heavy metal (Cd) stress. In study, growth parameter of the strawberry plant was decreased parallel with the application of increasing concentrations of Cd. On the other hand, exogenously applied of methyl jasmonate was modify of cadmium toxicity and root number, root weight, body weight, and leaf weight rose with depending on methyl Jasmonate dose. The results presented in this work suggested that Cd treatments have a negative effect on growth and methyl jasmonate apply plays an important role in the strawberry decreasing to cadmium stress.

Effects of Cd and Zn Treatments on Leaf Chemıcal Compounds of Japanese barberry (Berberis thunbergii), Boxwood (Buxus sempervirens var. rotundifolia), and Gold tassel (Euonymus japonica var. aurea) Species

“…Especially the dose of 50 μM Cd yielded four-fold increase in japanese barberry. It has been reported that although Fe, Zn and Cu are low mobility and Mn is an immobile element, they are essential minerals in metabolic, and physiological processes and can be found in high amounts in leaf tissue (Maillard et al, 2015;Muradolu et al, 2020). It is well documented that tolerant genotypes can accumulate more heavy metals in their tissues without any damage, and the concentrations of As, I, Sn, and Cr in trees are generally lower than that of Fe, Mn, Al, Zn, Ni, and Cu (Bernardini et a., 2016;Zhang et al, 2017).…”

“…Although Zn is toxic at low concentrations, Cd is toxic at high concentrations. Cadmium emerging as a result of zinc production and ranking 4 th in global annual use of metals are released to the environment via industrial wastes, industries such as the paper industry, metal-steel industry, and phosphatic fertilizer industry, as well as batteries, chimney gases, and traffic gases (Jain et al, 2020;Muradolu et al, 2020). The main objectives of this study are to compare the effects of Cd and Zn on 1) some bioactive compounds 2) relative water content (RWC), 3) macronutrients, and 4) trace elements of japanese barberry, boxwood, and gold tassel.…”