Developing medicinal plants

The meaning of the dissertation topic: This research contributes to complete the list and evaluate the diversity of medicinal plants in the coastal districts of Thai Binh province to serve local medical needs.

30p capheviahe27 23-02-2021 33 3   Download

The main aim of this thesis is to overcome the second limitation of the automatic plant identification (low recognition accuracy) by proposing novel and robust methods for plant recognition. For this, we first focus on improving the recognition accuracy of plant identification based on images of one sole organ. Among different organs of the plant, we select leaf as this organ is the most widely in the literature.

27p gaocaolon6 30-07-2020 30 3   Download

The thesis is based on the criteria of the analytical framework for development of medicinal plants towards sustainability; limitations of the status of development of medicinal plants; Based on the direction of development of medicinal plants, it gives points of view and orientations for development of medicinal plants in Lao Cai province.

0p dungmaithuy 17-09-2019 45 3   Download

The goal of the dissertation: To study and evaluate the current status of medicinal plant resources in Na Hang Nature Reserve, Tuyen Quang provinceto propose solutions for conservation and sustainable development of some valuable species

27p xacxuoc4321 11-07-2019 46 5   Download

Agrobacterium tumefaciens is a Gram-negative, phytopathogenic bacterium and is characterized by an unique mode of action on dicotyledonous plants: it is able to genetically modify the host, and because of this feature, it is used as a tool for transgenic plants. Many experiments have demonstrated that lipopolysaccharides (LPSs) play an important role for the disease development, as they are involved in the adhesion process of the bacterium on the plant cell wall.

4p system191 01-06-2013 32 4   Download

Four substrate analogs, 4-(2-naphthyloxy)-2-butyn-1-amine (1), 1,4-diamino-2-chloro-2-butene (2), 1,6-diamino-2,4hexadiyne (3), and 2-chloro-5-phthalimidopentylamine (4) have been tested as inhibitors against mammalian, plant, bacterial, and fungal copper-containing amine oxidases: bovine plasma amine oxidase (BPAO), equine plasma amine oxidase (EPAO), pea seedling amine oxidase (PSAO), Arthrobacter globiformis amine oxidase (AGAO), Escherichia coli amine oxidase (ECAO), and Pichia pastoris lysyl oxidase (PPLO).

14p research12 01-06-2013 43 6   Download

Plant lipoxygenases (LOXs) are a class of dioxygenases which display diverse functions in several physiological processes such as growth, development and response to biotic and abiotic stresses.Even though LOXs have been characterized from several plant species, the physiological role of seed LOXs is still unclear.With the aim to better clarify the occurrence of LOXs and their influence on hazelnut seed quality, we carried out the biochemical and molecular characterization of the main LOX isoforms expressed during seed development....

11p tumor12 20-04-2013 34 4   Download

Inorganic pyrophosphatase (PPase) is an important enzyme that catalyzes the hydrolysis of inorganic pyro-phosphate (PPi)intoortho-phosphate (P i ). We report here the molecular cloning and characterization of a gene encoding the soluble PPase of the roundworm Ascaris suum. The predicted A. suumPPase consists of 360 amino acids with a molecular mass of 40.6 kDa and a pI of 7.1.

13p fptmusic 16-04-2013 35 3   Download

Tobacco pathogenesis-related protein 1a (PR-1a) is induced in plants during the hypersensitive response (HR) after exposure of plants to salicylic acid (SA) and by develop-mental cues.Gene activation by these diverse stimuli is mediated via anas-1-like element in the PR-1aupstream region.To further analyze the significance of thiscis-acting sequence, an authentic as-1element from the cauliflower mosaic virus 35S RNA promoter was inserted into the PR-1apromoter in place of theas-1-like motif.

11p fptmusic 12-04-2013 37 3   Download

Higher plant chloroplasts possess at least four different pathways for pro-tein translocation across and protein integration into the thylakoid mem-branes. It is of interest with respect to plastid evolution, which pathways have been retained as a relic from the cyanobacterial ancestor (‘conserva-tive sorting’), which ones have been kept but modified, and which ones were developed at the organelle stage, i.e. are eukaryotic achievements as (largely) the Toc and Tic translocons for envelope import of cytosolic pre-cursor proteins. ...

12p awards 05-04-2013 36 4   Download

Phytochromes are photoreceptor proteins that monitor the light environ-ment and regulate a variety of photomorphogenic responses to optimize the growth and development of plants. Phytochromes comprise N-terminal photosensory and C-terminal regulatory domains. They are mutually pho-toconvertible between a red-light-absorbing (Pr) and a far-red-light-absorb-ing (Pfr) form. Their interconversion by light stimuli initiates downstream signaling cascades.

10p awards 05-04-2013 46 4   Download

Jasmonic acid and its methyl ester are ubiquitous plant sig-nalling compounds necessary for the regulation of growth and development, as well as for the response of plants to environmental stress factors. To date, it is not clear whether methyl jasmonate itself acts as a signal or if its conversion to jasmonic acid is mandatory prior to the induction of a def-ense response. We have cloned a cDNA, encoding a methyl jasmonate-cleaving enzyme, from tomato cell suspension cultures.

8p awards 05-04-2013 54 5   Download

A pair of nuclear receptors, ecdysone receptor (EcR) and ultraspiracle (USP), heterodimerize and transduce ecdysteroid signals. The EcR and its nonsteroidal ligands are being developed for regulation of transgene expres-sion in humans, animals and plants. In mammalian cells, EcR:USP heterodimers can function in the absence of ligand, but EcR⁄retinoid X receptor (EcR:RXR) heterodimers require the presence of ligand for activa-tion.

12p dell39 27-03-2013 43 4   Download

UDP-d-glucuronic acid and UDP-d-xylose are required for the biosynthesis of glycosaminoglycan in mammals and of cell wall polysaccharides in plants. Given the importance of these glycans to some organisms, the development of a system for production of UDP-d-glucuronic acid and UDP-d-xylose from a common precursor could prove useful for a number of applications.

13p inspiron33 26-03-2013 68 5   Download

We developed a new method for inhibiting tobacco mosaic virus infection in tobacco plants based on specific RNA hydrolysis induced by a leadzyme. We identified a leadzyme substrate target sequence in genomic tobacco mosaic virus RNA and designed a 16-mer oligoribonucleotide capable of forming a specific leadzyme motif with a five-nucleotide catalytic loop.

10p inspiron33 23-03-2013 38 2   Download

The development of unisexual flowers in maize and other plants proceeds through selective elimination of floral organs in an initially bisexual floral meristem. The essential character of thetasselseed 2 gene (TS2) in this cell-death pathway has been established previously.

11p galaxyss3 21-03-2013 22 3   Download

TheArabidopsis acd11mutant exhibits runaway, programmed cell death due to the loss of a putative sphingosine transfer protein (ACD11) with homology to mammalian GLTP. We demonstrate that transgenic expres-sion in Arabidopsis thalianaof human GLTP partially suppressed the phenotype of theacd11null mutant, resulting in delayed programmed cell death development and plant survival.

11p galaxyss3 07-03-2013 48 4   Download

Homeobox genes play a critical role in regulating various aspects of plant growth and development. In the present study, we identified a total of 107 homeobox genes in the rice genome and grouped them into ten distinct subfamilies based upon their domain composition and phylogenetic analy-sis.

17p media19 06-03-2013 48 3   Download

b-Glucosidases such as Zm-p60.1 (Zea mays) and Bgl4:1 (Brassica napus) have implicated roles in regulating plant development by releasing biologi-cally active cytokinins from O-glucosides. A key determinant of substrate specificity in Zm-p60.1 is the F193–F200–W373–F461 cluster. However, despite sharing the same substrates, amino acids in the active sites of Zm-p60.1 and Bgl4:1 differ dramatically.

13p vinaphone15 28-02-2013 45 3   Download

One of several potential approaches to study mechanisms of action of bio-logically active compounds is to develop their agonists and antagonists. In the present study, we report the identification of the first known molecule antagonizing the activity of the plant hormone cytokinin at the receptor level.

10p vinaphone15 27-02-2013 34 2   Download