The potential use of methyl jasmonate, putrescine and cold atmospheric plasma on genetic variability and seedling growth improvement in medicinal plant Catharanthus roseus L. cultivar

Does Methyl Jasmonate Effectively Protect Plants under Heavy Metal Contamination? Fatty Acid Content in Wheat Leaves Exposed to Cadmium with or without Exogenous Methyl Jasmonate Application

“…A similar effect was also found in tobacco [ 30 ], rice [ 31 ] and pea [ 32 ] plants. However, there are data on the absence of the effect of exogenous MJapplication on the linear dimensions of plants, for example soybean [ 33 ], Catharanthus roseus [ 34 ] and pea [ 35 ]. At the same time, the accumulation of plant biomass, in this case, increased compared to untreated plants; this was also observed in wheat in the present study, and not only here (see [ 36 ]), as well as in plants including rice [ 12 ], Isatisin digotica [ 37 ] and pea [ 35 ].…”

Comparative analysis of the germination of barley seeds subjected to drying, hydrogen peroxide, or oxidative air plasma treatments

“…A central hypothesis of this study is that peroxo-like species may affect the ABA and thus induce changes in dormancy and, consequently, germination rate. [23][24][25][26][27][28][29][30][35][36][37][38][39][40][41][42][43][44][45]48] It is, therefore, important to assess the content of peroxo-like species incorporated in the seeds after their treatment with a plasma of air or with a solution of H 2 O 2 . The peroxo-like content in the seeds was estimated by means of the classical colorimetric procedure proposed by Soares et al [50] According to this procedure peroxo-like species formed or incorporated into the seeds can be extracted by applying the following procedure: (i) grinding 1 g of seeds in a 10 ml phosphate-buffered solution (50 mmol l −1 , pH=6,5) with 1 mmol l −1 hidroxilamine; (ii) the resulting slurry is then centrifuged at 6.000 g n for 25 min; (iii) 3 ml of the separated liquid is then mixed with a 1 ml of titanium sulfate solution at 0.1% in a volume ratio of 20%; (iv) this mixture is centrifuged at 6.000 g n for 25 min and the separated transparent liquid is then optically analyzed with a spectrometer.…”

“…The content of the ABA phytohormone and other enzymes in the seeds is generally recognized as a dormancy factor controlling the germination and growth processes. [23][24][25][26][27][28][29][30] Their presence in the seeds has been taken as directly linked with the germination rate. Therefore, in this study, we have tried to determine the possible effect of plasmas on the deactivation/removal of ABA and, consequently, with the observed increase in the seed germination potential.…”

“…[1,[17][18][19][20][21] Other works though relate the acceleration of germination rate with the affectation of dormancy and the effect on growth factors such as the abscisic acid (ABA) and other seed enzymes of reactive oxidative species (ROS) formed at the seed surface upon plasma interaction. [22][23][24][25][26][27][28][29][30] As a result, the effect of plasmas on germination is still unclear, failing a clear understanding about the incidence of plasma effects on the germination process. This situation is still more puzzling since the actual influence of plasmas on germination may also depend on the characteristics of seeds and their external coat or the treatment time and type of gases utilized to ignite the plasmas, [9,31] with case examples where plasma produced either no effect or a negative effect on water uptake [14] and/ or germination efficiency.…”

Germination and First Stages of Growth in Drought, Salinity, and Cold Stress Conditions of Plasma-Treated Barley Seeds

“…Seed germination is a critical step for the development of plants and, consequently, a process that has been studied from multiple perspectives, including morphological, biochemical, and gene expression . During the last years, among the large variety of methods utilized to improve seedling and plant growth, the application of low-temperature plasmas has received considerable attention in the scientific literature. – Recent reviews on the subject have highlighted the complexity of the biochemical and gene expression effects that can be triggered when treating seeds with plasmas. Also, the diversity of scenarios and variables that must be considered in these studies, including type of plants, characteristics of cold plasmas, or environmental growth conditions. – …”