This study presents the results of anatomic-morphological examination of vegetative (leaves) and generative (flowers, fruits) organs of the endemic plant Crataegus almaatensis Pojark – family Rosaceae, growing in the foothills of Ile Alatau mountains, Almaty region of the Republic of Kazakhstan. The plant Crataegus almaatensis Pojark was examined during the phenological phase of flowering and f...

The fluxes of (1) exogenous nitrogen (N) assimilation and (2) remobilization of endogenous N from vegetative plant compartments were measured by 15N labeling during the seed-filling period in pea (Pisum sativum L. cv Cameor), to better understand the mechanism of N remobilization. While the majority (86%) of exogenous N was allocated to the vegetative organs before the beginning of seed filling...

The fluxes of (1) exogenous nitrogen (N) assimilation and (2) remobilization of endogenous N from vegetative plant compartments were measured by N labeling during the seed-filling period in pea (Pisum sativum L. cv Caméor), to better understand the mechanism of N remobilization. While the majority (86%) of exogenous N was allocated to the vegetative organs before the beginning of seed filling, ...

Origanum onites and Origanum vulgare ssp. hirtum were collected from Balikesir, on the north west of Turkey. The nitrogen contents in organs such as root, stem, leaf and flower of Origanum onites and Origanum vulgare ssp. hirtum taxa in vegetative and generative growth stages were investigated. Nitrogen analyses of soil and plant samples were carried out according to the Kjeldahl method. It was...

Plant architecture is commonly defined by the adjacency of organs within the structure and their properties. Few studies consider the effect of endogenous temporal factors, namely phenological factors, on the establishment of plant architecture. This study hypothesized that, in addition to the effect of environmental factors, the observed plant architecture results from both endogenous structur...

Since the transition from vegetative to floral development in plants is likely to be influenced by gene expression in several plant organs, we have used an in vitro system, the tobacco "thin cell layer" system as a model for investigating gene expression associated with the initiation of flowering in higher plants. cDNA cloning has been used to identify mRNAs abundant during thin cell layer flo...

A 1670 bp 5'-flanking region of the polyphenol oxidase (PPO) gene was isolated from red Swiss chard, a betalain-producing plant. This region, named promoter BvcPPOP, and its 5'-truncated versions were fused with the GUS gene and introduced into Arabidopsis, an anthocyanins-producing plant. GUS histochemical staining and quantitative analysis of transgenic plants at the vegetative and reproducti...

The majority of the plant body is derived from the activities of groups of specialized cells, known as apical meristems, at the growing tips. In a typical flowering plant, the shoot apical meristem (SAM) gives rise to the bulk of the above-ground portion of the plant, whereas root meristems give rise to the bulk of the subterranean plant body. Of course, not all plants are typical, and numerous...

The presence of anthocyanins in flowers and fruits is frequently attributed to attracting pollinators and dispersers. In vegetative organs, anthocyanins and other non-pigmented flavonoids such as flavones and flavonols may serve protective functions against UV radiation, cold, heat, drought, salinity, pathogens, and herbivores; thus, these compounds are usually produced as a plastic response to...

Figure 1. Aspects of Marchantia biology. (A) Vegetative haploid life form (thallus) in laboratory culture. (B) Female reproductive organs (archegoniophores) in the shape of palm trees growing from the haploid thallus of a female plant. (C) Male reproductive organs (antheridiophores) in the shape of umbrellas growing from the haploid thallus of a male plant. (D) Scanning electron micrograph of t...