Life Sciences and Agriculture

Acta Biologica Cracoviensia s. Botanica

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Acta Biologica Cracoviensia s. Botanica | 2020 | vol. 62 | No 1

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Abstract

Portulaca oleracea L. (Portulacaceae) is used as functional food and its nutritional and therapeutic properties are related to the high levels of organic and fatty acids, polyphenols, polysaccharides and cyclo-dopa amides. This study presents a strategy based on liquid chromatography – high resolution accurate mass spectrometry method (LC – HRAMS) and bioinformatic methods to analyze 33 purslane accessions originating from 11 floristic regions in Bulgaria together with 5 accessions of Greek provenance. Extracts were obtained by microwave extraction. Based on the LC-MS metabolic “fingerprints” of assayed samples, a purslane metabolic database was developed. LC-MS data were proceeded with Software application Compound Discover 2.0 (Thermo Fischer Sci., USA). Principal Component Analysis (PCA) combined with both descriptive and differential analyses were used to find marker metabolites to distinguish different geographical regions. The differential analysis of the Bulgarian and Greek samples allowed the identification of 50 marker metabolites. Based on accurate masses, retention times, fragmentation patterns in MS/MS, comparison with commercial standards and literature data, these secondary metabolites were identified after detailed analysis of Volcano-plots. For the first time, 29 compounds are reported. The identified compounds were used to perform a study of the biosynthetic pathways of purslane secondary metabolites using Kyoto Encyclopedia of Genes and Genomes (KEGG) software platform. The statistical treatments identified marker compounds that can be used to distinguish the origin of accession set. Combining LC-MS data with multivariate statistical analysis was shown to be effective in studying the purslane metabolites, allowing for integration of chemistry with geographic origin.

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Authors and Affiliations

Vessela Balabanova
Iassen Hristov
Dimitrina Zheleva-Dimitrova
Paulina Sugareva
Valentin Lozanov
Reneta Gevrenova
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Abstract

The spontaneous diploidization rates in oilseed rape (Brassica napus L.) via in vitro androgenesis are too low for practical applications. In contrast, artificial doubling of chromosomes of the microspore has proven to be more successful and allows homozygous plants to be obtained in a short time. Here, we present the efficiency of diploidization of B. napus haploids using three different chromosome doubling methods.

Using the in vitro approach in microspores, the rate of chromosome doubling in 24 populations of androgenic plants ranged from 15.8% to 94.0%. An alternative in vivo method for the induction of chromosome doubling involves colchicine treatment of young haploid plants, and this yielded doubling rates ranging from 47.5% to 86.4% in 10 different plant populations. Another in vivo method of chromosome doubling is colchicine treatment of the excised young axillary shoots of haploid plants at the early flowering stage. The high efficiency of this method was confirmed in haploid plant populations from 11 genetically distinct donors in which the frequency of occurrence of diploids ranged from 53.3% to 100%. However, in this case, the time required for seed formation from doubled haploids increased by about 3–5 months. The availability of several methods of chromosome doubling at various stages of the androgenic process – from isolated microspores through to young plants and flowering plants – allows seeds to be obtained from nearly every selected individual haploid.

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Authors and Affiliations

Laurencja Szała
Katarzyna Sosnowska
Teresa Cegielska-Taras
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Abstract

Since plant responses to selenium nanoparticles (nSe) had not been clarified, this study was carried out to evaluate the effects of nSe (10 and 100 μM) on photosynthesis performance, ion homeostasis, antioxidant system, and phenylpropanoids in strawberry exposed to salt stress. Inductively Coupled Plasma-Mass Spectroscopy analyses indicated that foliar-applied nSe can be taken up by leaves and trans-located to roots. Salinity led to an increase in Na concentration and reductions in Ca and K contents which were relieved by the nSe applications. Moreover, the nSe treatment at 10 μM alleviated the NaCl-induced lesion to PSII functioning, contributing to improvement in water-splitting complex (Fv/Fo) under salinity. The exposure to nSe at a concentration of 100 µM exhibited a moderate stress, determined by the increases in hydrogen peroxide (H2O2) and lipid peroxidation rate (membrane integrity index). The nSe10 treatment increased catalase activity and phenylpropanoid derivatives contents (salicylic acid, catechin, and caffeic acid) and decreased the content of oxidants under salinity condition. Consequently, nSe utilization at a suitable dose can be an effective method to alleviate signs of salt stress via improvements in photosynthesis, ion hemostasis, photosynthesis performance, salicylic acid (a vital signaling defensive hormone), and antioxidant machinery.

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Authors and Affiliations

Reza Soleymanzadeh
Alireza Iranbakhsh
Ghader Habibi
Zahra Oraghi Ardebili
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Abstract

Rumex thyrsiflorus Fingerh. is mentioned as a European folk medicinal plant. This species has also been traditionally used as an edible plant in Eastern Europe because of its nutritional value. During the study, qualitative and quantitative sex-related differences of phenolic constituents in methanolic leaf extracts of R. thyrsiflorus were evaluated. The presence of the same substances (nine phenolic acids before, and six phenolic acids after acid hydrolysis, nine flavonoids, and a catechin) was estimated in both female and male specimens, using the HPLC-DAD method. A statistically significant higher content of eleven constituents in female plant extracts (acids: chlorogenic, p-coumaric, cryptochlorogenic, gallic, protocatechuic, neochlorogenic, vanillic; flavonoids: quercitrin, rhamnetin, rutoside; and catechin) was shown. This is the first report concerning the relation between the sex and the content of biologically active phenolic secondary metabolites in leaf extracts of R. thyrsiflorus. Female plants of R. thyrsiflorus could be useful for pharmaceutical purposes as a preferential source of bioactive phenolic acids, flavonoids and especially catechin.

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Authors and Affiliations

Katarzyna Dziedzic
Agnieszka Szopa
Piotr Waligórski
Halina Ekiert
Halina Ślesak
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Abstract

Habitat fragmentation is one of serious threats to biodiversity of nature in today's world. The present study of a typical steppe species Iris pumila L. (Iridaceae) has analyzed the impacts of geographical isolation and population size on genetic diversity and population structure in conditions of habitat fragmentation. The key indices of population genetic variability calculated from the ISSR markers data were on average as follows: Shannon diversity index (S) – 0.188; unbiased Nei’s gene diversity (He) – 0.123; and the average measure of Jaccard’s genetic distances between individuals within populations – 58.4%. Although the largest population had significantly higher values of S and He, the small and marginal populations also showed a comparable level of variation. Most of the genetic variation of I. pumila was distributed within the populations. A strong correlation was found between Nei’s genetic distances and geographic distances between the populations. According to the Bayesian analysis, genetic structure of the populations was highly homogeneous; however, the presence of admixed genotypes indicated the possibility of gene flow between the populations at present.

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Authors and Affiliations

Olena Bublyk
Igor Andreev
ORCID: ORCID
Ivan Parnikoza
ORCID: ORCID
Viktor Kunakh
ORCID: ORCID
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Abstract

Dehydroabietic acid R=COOH (DHA), a naturally occuring diterpene resin acid, is an activator of systemic acquired resistance (SAR) under biotic stress. However, there had been no report on its functioning under salinity. In the present study, we determined the effects of DHA on salinity and its possible role as a signal transmitter in soybean (Glycine max L.) leaves under salinity (200 mM NaCl). Furthermore, physiological parameters, chlorophyll, proline, malondialdehyde (MDA), hydrogen peroxide (H2O2) content, superoxide (O2‾) and hydroxyl radical (•OH) scavenge capacity, as well as antioxidant enzymes (SOD, POX, APX and GST) and GmWRKY-71 gene expressions were investigated in the treated plants at 6 h, 12 h and 24 h. The obtained results showed that pretreatment of DHA caused (1) a reduction in salt-induced damage, (2) improvement in biomass yield, water status, chlorophyll and leaf area, (3) regulation of the proline level and relative electrolyte leakage, (4) increase in reactive oxygen species (ROS) scavenging capacity, (5) induction of SOD and APX enzyme activity at all the investigated periods, while POX only at 6 h, and thus alleviation of the oxidative damage. In addition, the changes in GmWRKY-71 gene expressions were remarkable in soybean under salinity. To sum up, these results showed that DHA can be used as a ROS inhibitor or a signal molecule in increasing salt tolerance in soybean under salinity.

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Authors and Affiliations

Eda Tasci
Burcu Seckin Dinler
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Abstract

The genus Scutellaria L., Lamiaceae family, Scutellarioideae sub-family is known as the most important medicinal plant in the world. This research aimed to investigate the flavonoid content of seven Scutellaria species from the center, southwest, and west of Iran. Via thin layer and column chromatography, the flavonoid was extracted from leaves and then purified. To screen the flavonoid compositions, a chromatographic method was applied by liquid chromatography mass spectrometry on a triple quadrupole mass spectrometer (LC/TQMS/MS). Fingerprint analysis was implemented so as to characterize a total of 73 chemical compounds, from which 71 compounds were flavonoids belonging to different classes. Flavone with 37 derivatives possessed major values. The most abundant flavonoid compounds were observed in S. multicaulis (23 compounds) and S. patonii (22 compounds). Flavonoid composition, including apigenin, kaempferol, quercetin, and hydroxyl- flavones represented remarkable derivatives. A total of 45 flavonoids, one tannin and one anthraquinone compound, were observed to be primarily separated and identified for Scutellaria species. Moreover, six categorized chemical groups were identified in this genus and proposed as chemical barcodes. The specific chemical groups strongly provided the boundaries of Scutellaria species, the pharmacological value enhancement, breeding programs, and comprehensive documents of the species. According to the results, LC/TQMS/MS was proven a dominant method regarding genus Scutellaria.

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Authors and Affiliations

Farzaneh Jafari Dehkordi
Navaz Kharazian
Zahra Lorigooini
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Abstract

Hydrogen sulfide (H2S) regulates many critical processes of plants. The effect of sodium hydrogen sulfide as H2S agent was investigated in basil plants under cadmium stress. A completely randomized design with three different concentrations (0, 50 and 100 μM) of CdCl2 and two levels of NaHS (0 and 100 μM) was used in this study. Cadmium exposure reduced growth parameters and relative water content. Cd also caused a significant increase in ion leakage and higher oxidative stress in terms of lipid peroxidation and H2O2 production. Although exogenous NaHS used in non-stressed control plants negatively affected growth and physiological parameters, it improved the root/shoot length ratio and fresh weight in basil plants under Cd 50 μM exposure. Moreover, NaHS alleviated deleterious effects of cadmium on ion leakage, relative water content and photosynthetic pigments of leaves. The activity of antioxidant enzymes like catalase, peroxidase and ascorbate peroxidase were also enhanced by NaHS in plants under moderate cadmium stress. Our results show that NaHS 50 μM ameliorates growth retardation induced by cadmium 50 μM stress in basil plants, probably through regulating physiological parameters such as photosynthetic pigments content, relative water content and the activity of antioxidant enzymes.

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Authors and Affiliations

Hakimeh Oloumi
Mansooreh Khodashenas

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ACTA BIOLOGICA CRACOVIENSIA Series Botanica is an English-language journal founded in 1958, devoted to plant anatomy and morphology, cytology, genetics, embryology, tissue culture, physiology, biochemistry, biosystematics, molecular phylogenetics and phylogeography, as well as phytochemistry. It is published twice a year.

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PALMER TP. 1962. Population structure, breeding system, interspecific hybridization and alloploidy. Heredity 17: 278-283.
CHEN BY, HENEEN WK, SIMONSEN V. 1989. Comparative and genetic studies of isozymes in resynthesized and cultivated Brassica napus L., Brassica campestris L., and B. alboglabra Baitey. Theoretical and Applied Genetics 77: 673-679.
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BERGRREN DJ. 1981. Atlas of Seeds, part 3. Swedish Museum of Natural History, Stockholm.
BING D, DOWNEY RK, RAKOW GFW. 1991. Potential of gene transfer among oilseed Brassica and their weedy relatives. Proceedings of the GCTRC Eighth International Rapeseed Congress, 9-11 July 1991, 1022-1027. Saskatoon, Saskatchewan.
ROMEO JT. 1973. A chemotaxonomic study of the genus Erythrina (Leguminosae). Ph.D. disseration, University of Texas, Austin, TX.
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PHILLIPS RL. 1981. Pollen and pollen tubes. In: Clark G [ed.], Staining Procedures, 61-366. Williams and Wilkins, Baltimore, MD.
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