Monika Tuleja (Jach)

Jagiellonian University | UJ · Department of Plant Cytology and Embryology

Ornamentals come in a variety of shapes, sizes, and colors to suit a wide range of climates, landscapes, and gardening needs. Compared to demand, a shortage of plant materials and diversity force the search for solutions for their constant acquisition and improvement to increase their commercial value, respectively. In vitro cultures are a suitable...

Endosperm, an ephemeral and storage tissue, serves as a source of nutrition and protection during embryo development and germination. It can be used for the cultivation of polyploid plants in vitro. Here, results of plant regeneration and acclimatization from the endosperm-derived calli of four cultivars of Actinidia arguta has been presented. Seed...

Seed germination in Stevia rebaudiana is poor and seedlings are difficult to achieve, thus the generative reproduction of this plant is limited. The aim of our studies was to investigate the stages of female and male gametophyte development along with pollen viability and pollen germination. Although our results showed the proper way of stevia male...

Endosperm, an ephemeral and storage tissue, serves as a source of nutrition and protection during embryo development and germination. It can be used for the cultivation of polyploid plants in vitro . Here, a protocol of plant regeneration and acclimatization from the endosperm-derived calli of Actinidia arguta has been developed. Seeds excised from...

Steviol glycosides (SvGls) are plant secondary metabolites belonging to a class of chemical compounds known as diterpenes. SvGls have been discovered only in a few plant species, including in the leaves of Stevia rebaudiana Bertoni. Over the last few decades, SvGls have been extensively researched for their extraordinary sweetness. As a result, the...

Key message Differences in the composition and the structural organisation of the extracellular matrix correlate with the morphogenic competence of the callus tissue that originated from the isolated endosperm of kiwifruit. AbstractThe chemical composition and structural organisation of the extracellular matrix, including the cell wall and the laye...

Taraxacum belorussicum Val. N. Tikhom, a poorly known and obligatory apomictic species, is an attractive plant material for studying the embryological, genetic and molecular mechanisms of apomixis. This work aims to obtain an efficient protocol for Taraxacum belorussicum regeneration. Four types of explants (cotyledons, hypocotyls, meristems and ro...

In vitro regeneration of Viola stagnina Kit., endangered in most part of its European distribution range, was successfully obtained based on the newly developed protocol. Adventitious shoots via direct and indirect organogenesis were induced on leaf blade and petiole fragments on solidified Murashige and Skoog (MS) medium supplemented with 0.5 or 1...

In vitro regeneration of Viola stagnina Kit., endangered in most part of its European distribution range, was successfully obtained based on the newly developed protocol. Adventitious shoots via direct and indirect organogenesis were induced on leaf blade and petiole fragments on solidified Murashige and Skoog (MS) medium supplemented with 0.5 or 1...

Galinsoga quadriradiata Ruiz & Pav. is an annual weedy plant that can be found all over the world. It belongs to the Asteraceae family and is recognised as one of the invasive foreign plants in Poland, which are native to Central and South America. The aim of this study was to describe the reproductive features of Galinsoga quadriradiata focusing o...

We report occurrences of Orobanche grenieri (Orobanchaceae) in the Lesser Caucasus in southern Georgia (western Asia), and in Badakhshan in Tajikistan (central Asia). These localities are more than 3000 and 5000 km apart from its previously known distribution areas in Spain and France, respectively. We used morphological evidence as well as nuclear...

An evolutionary trend to reduce "unnecessary costs" associated with the sexual reproduction of their amphimictic ancestors, which may result in greater reproductive success, has been observed among the obligatory apomicts. However, in the case of the female gametophyte, knowledge about this trend in apomicts is not sufficient because most of the ul...

Dandelion as a model herbal plant has a wide application in analysis of genetic, molecular background of apomictic reproduction. Taraxacum belorussicum Val. N. Tikhom. is a triploid species belonging to Taraxacum sect. Palustria . As an obligatory apomictic plant it presents attractive experimental material for apomixis and somatic embryogenesis as...

Cephalotus follicularis Labill. is representative of the extraordinary carnivorous group of plants. Carnivorous plants with pitcher traps grow in nutrient poor, sunny and wet habitats, they have adapted themselves to growth in bogs, sandy soils and obtain some nutrients (e.g. nitrogen and phosphate) from insects and other arthropods or protozoa, ev...

Pelargonium species are know and popular as the ornamental plants valued for their colorful, showy flowers and attractive leaf shape. Furthermore, some of these species are used in the pharmacy, aromatherapy, perfumery and cosmetic industry as well (Moyo et al. 2012). Most of approximately 280 species of the genus Pelargonium (fam. Geraniaceae) are...

The Arabidopsis CDKG;2 gene encodes a putative cyclin-dependent Ser/Thr protein kinase of unknown biological function. This gene shows structural similarity to animal and human cyclin-dependent (PITSLRE) kinases. This study used the homozygous knockout cdkg;2 mutant based on T-DNA insertional line SALK_090262 to study the effect of mutation of the...

Tissue cultures in vitro are used for the multiplication of plants via direct and indirect (via callus) regeneration. This approach is commonly applied in the protection of endangered species by the introduction of regenerated in vitro plantlets to botanical gardens and to the nature (so called ex situ plant conservation). In vitroconditions, espec...

The paper reports studies, including histological and ultrastructural analyses, of in vitro cell proliferation and development of immature endosperm tissue isolated from caryopses of Triticum aestivum, Triticum durum, and Triticosecale plants. Endosperm isolated at 7-10 days post-anthesis developed well on MS medium supplemented with auxins and/or...

Microscopy and flow cytometry (FCM) were used to study somatic embryogenesis (SE) from zygotic embryos of Trifolium nigrescens Viv. to determine if there were any relationships between characteristics of somatic embryos (morphology, anatomy, genome size stability) and their regenerability. Embryoids were induced on Murashige and Skoog (MS) medium c...

Stable transformation of Mesembryanthemum crystallinum L. (common ice plant) with a green fluorescent protein (GFP) construct targeted to the endoplasmic reticulum was obtained. Seven and fourteen days after germination seedlings were infected with Agrobacterium rhizogenes strain ARqua1 either by direct coating of the cut radicles with bacteria gro...

This study developed a plant regeneration protocol for Trifolium nigrescens (Viv.) via somatic embryogenesis (SE). Immature zygotic embryos at torpedo (TsE) and cotyledonary (CsE) stage were cultured on media with different auxins and cytokinins at different concentrations. The cultural requirements for SE differed between the explants used: the ad...

The changes in the activity of some antioxidant enzymes and endogenous H2O2 level in zygotic sunflower embryos during organogenesis and somatic embryogenesis were monitored. Pathways of regeneration were induced on media differing with sucrose concentration 87mmoldm−3 for shoot [shoot induction medium (SIM) medium] and 350mmoldm−3 [embryo induction...

In vitro somatic embryogenesis and organogenesis (shoot and root formation) were observed when immature zygotic embryos of the sunflower cultivars Frankasol, Printasol, Lech and Wielkopolski were cultured on JME medium containing high sucrose concentration (350 mM). Of four tested cultivars, Frankasol showed the highest rate of somatic embryogenesi...

An attempt was made to produce interspecific hybrids among Trifolium species. In situ pollination followed by in ovulo embryo culture and culture of the excised embryos, and in vitro pollination have been applied. 21 embryos were obtained from 636 in situ pollinations. 13 embryos were green and showed normal development. It was found that these emb...