My favourite flowering image: computed tomographic reconstruction of a crucifer flower

2020 ◽  
Vol 71 (22) ◽  
pp. e4-e5
Author(s):  
Lachezar A Nikolov
Keyword(s):  
Tomographic Reconstruction ◽  
Floral Structure ◽  
Computed Tomographic ◽  
Genomic Technologies ◽  
Floral Diversity ◽  
The Family ◽  
Model Plant Arabidopsis Thaliana ◽  
Distinct Features ◽  
Insight Into ◽  
Plant Arabidopsis Thaliana

Abstract Crucifer flowers have a stereotypical plan and much of the floral diversity in the family is revealed only by careful observation. This statement holds true for the flower of Stanleya elata, a relative of the model plant Arabidopsis thaliana, which exhibits a number of distinct features that highlight the value of crucifers in comparative studies. Such comparative approaches in combination with new imaging and genomic technologies provide novel insight into floral structure and diversity.

A multigene family of glycosyltransferases in a model plant, Arabidopsis thaliana

2002 ◽  
Vol 30 (2) ◽  
pp. 301-306 ◽  
Author(s):  
D. Bowles
Keyword(s):  
Arabidopsis Thaliana ◽  
Multigene Family ◽  
Sequence Similarity ◽  
Plant Cells ◽  
The Family ◽  
Model Plant Arabidopsis Thaliana ◽  
Group 1 ◽  
Plant Arabidopsis Thaliana

Glycosyltransferases transfer sugars from NDP-sugar donors to acceptors. The multigene family of transferases described in this paper typically transfer glucose from UDP-glucose to low-molecular-mass acceptors in the cytosol of plant cells. There are 107 sequences in the genome of Arabidopsis thaliana that contain a consensus, suggesting they belong to this Group 1 multigene family. The family has been analysed phylogenetically, and a functional genomics approach has been applied to explore the relatedness of sequence similarity to catalytic specificity and stereoselectivity. Enzymes belonging to this class of transferases glycosylate a vast array of acceptors, including natural products such as secondary metabolites and hormones, as well as xenobiotics absorbed by the plant, such as herbicides and pesticides. Conjugation to glucose potentially changes the activity of the acceptor molecule and invariably changes its location within the plant cell. Using the genomics approach described, a platform of knowledge has been constructed that will enable an understanding to be gained on the role of these enzymes in cellular homoeostasis, as well as their activity in biotransformations in vitro that require strict regioselectivity of glycosylation.

A Review of Phytochemical and Pharmacological Studies of Inula Species

2020 ◽  
Vol 16 (5) ◽  
pp. 557-567
Author(s):  
Aparoop Das ◽  
Anshul Shakya ◽  
Surajit Kumar Ghosh ◽  
Udaya P. Singh ◽  
Hans R. Bhat
Keyword(s):  
Bacterial Infections ◽  
Chemical Constituents ◽  
Valuable Insight ◽  
Important Ingredient ◽  
Pharmacological Activities ◽  
Medicinal Uses ◽  
The Family ◽  
Pharmacological Studies ◽  
Perennial Herbs ◽  
Insight Into

Background: Plants of the genus Inula are perennial herbs of the family Asteraceae. This genus includes more than 100 species, widely distributed throughout Europe, Africa and Asia including India. Many of them are indicated in traditional medicine, e.g., in Ayurveda. This review explores chemical constituents, medicinal uses and pharmacological actions of Inula species. Methods: Major databases and research and review articles retrieved through Scopus, Web of Science, and Medline were consulted to obtain information on the pharmacological activities of the genus Inula published from 1994 to 2017. Results: Inula species are used either alone or as an important ingredient of various formulations to cure dysfunctions of the cardiovascular system, respiratory system, urinary system, central nervous system and digestive system, and for the treatment of asthma, diabetes, cancers, skin disorders, hepatic disease, fungal and bacterial infections. A range of phytochemicals including alkaloids, essential and volatile oils, flavonoids, terpenes, and lactones has been isolated from herbs of the genus Inula, which might possibly explain traditional uses of these plants. Conclusion: The present review is focused on chemical constituents, medicinal uses and pharmacological actions of Inula species and provides valuable insight into its medicinal potential.

scholarly journals X-Ray Structure of 12-Oxophytodienoate Reductase 1 Provides Structural Insight into Substrate Binding and Specificity within the Family of OYE

Structure ◽  
2001 ◽  
Vol 9 (5) ◽  
pp. 419-429 ◽  
Author(s):  
Constanze Breithaupt ◽  
Jochen Strassner ◽  
Ulrike Breitinger ◽  
Robert Huber ◽  
Peter Macheroux ◽  
...  
Keyword(s):  
Substrate Binding ◽  
X Ray ◽  
The Family ◽  
Structural Insight ◽  
Insight Into

scholarly journals The scope of flavin-dependent reactions and processes in the model plant Arabidopsis thaliana

2021 ◽  
Vol 189 ◽  
pp. 112822
Author(s):  
Reinmar Eggers ◽  
Alexandra Jammer ◽  
Shalinee Jha ◽  
Bianca Kerschbaumer ◽  
Majd Lahham ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Model Plant ◽  
Model Plant Arabidopsis Thaliana ◽  
Plant Arabidopsis Thaliana

scholarly journals Genetic and phenotypic analysis of the pathogenic potential of two novel Chlamydia gallinacea strains compared to Chlamydia psittaci

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Marloes Heijne ◽  
Martina Jelocnik ◽  
Alexander Umanets ◽  
Michael S. M. Brouwer ◽  
Annemieke Dinkla ◽  
...  
Keyword(s):  
Virulence Factors ◽  
Opportunistic Pathogen ◽  
Chlamydia Psittaci ◽  
Phenotypic Analysis ◽  
Pathogenic Potential ◽  
The Family ◽  
Chicken Eggs ◽  
Sequence Types ◽  
Insight Into ◽  
Embryonated Chicken

AbstractChlamydia gallinacea is an obligate intracellular bacterium that has recently been added to the family of Chlamydiaceae. C. gallinacea is genetically diverse, widespread in poultry and a suspected cause of pneumonia in slaughterhouse workers. In poultry, C. gallinacea infections appear asymptomatic, but studies about the pathogenic potential are limited. In this study two novel sequence types of C. gallinacea were isolated from apparently healthy chickens. Both isolates (NL_G47 and NL_F725) were closely related to each other and have at least 99.5% DNA sequence identity to C. gallinacea Type strain 08-1274/3. To gain further insight into the pathogenic potential, infection experiments in embryonated chicken eggs and comparative genomics with Chlamydia psittaci were performed. C. psittaci is a ubiquitous zoonotic pathogen of birds and mammals, and infection in poultry can result in severe systemic illness. In experiments with embryonated chicken eggs, C. gallinacea induced mortality was observed, potentially strain dependent, but lower compared to C. psittaci induced mortality. Comparative analyses confirmed all currently available C. gallinacea genomes possess the hallmark genes coding for known and potential virulence factors as found in C. psittaci albeit to a reduced number of orthologues or paralogs. The presence of potential virulence factors and the observed mortality in embryonated eggs indicates C. gallinacea should rather be considered as an opportunistic pathogen than an innocuous commensal.

Fruit developmental biology and endosperm rumination in Elaeocarpus ruminatus (Elaeocarpaceae), and its taxonomic significance

2018 ◽  
Author(s):  
Janet N. Gagul ◽  
David Y. P. Tng ◽  
Darren M. Crayn
Keyword(s):  
Developmental Biology ◽  
Adaptive Significance ◽  
Evolutionary Significance ◽  
Phylogenetic Distribution ◽  
Taxonomic Significance ◽  
The Family ◽  
Developmental Phases ◽  
Trees And Shrubs ◽  
Insight Into ◽  
Gaining Insight

The genus Elaeocarpus is the largest genus in the family Elaeocarpaceae, comprising more than 350 species of trees and shrubs with a mainly Indo-Pacific distribution. Approximately 28 species in the genus, including nine species from Australia, are known to possess ruminate endosperm. To provide a basis for understanding fruit development and endosperm rumination in the genus and, therefore, its taxonomic and evolutionary significance, we studied the fruit anatomy of Elaeocarpus ruminatus F.Muell. at different developmental phases (petal-fall to maturity). We found lignin in pericarp and ovary wall tissues in the earliest stages of development. In contrast, endosperm rumination occurs only after fruits have fully expanded, and becomes more pronounced as fruits ripen. Its phylogenetic distribution suggests that ruminate endosperm is a derived, albeit homoplasious character in Elaeocarpus. Comparative studies on related species will be instructive in determining the utility of ruminate endosperm for informing infra-generic taxonomy of the genus, and gaining insight into its adaptive significance.

scholarly journals Phylogenetic relationships among the clownfish-hosting sea anemones

2019 ◽  
Author(s):  
Benjamin M. Titus ◽  
Charlotte Benedict ◽  
Robert Laroche ◽  
Luciana C. Gusmão ◽  
Vanessa Van Deusen ◽  
...  
Keyword(s):  
Phylogenetic Reconstruction ◽  
Taxonomic Revision ◽  
Sea Anemone ◽  
Coral Triangle ◽  
Sea Anemones ◽  
Ecological Processes ◽  
Holistic Understanding ◽  
The Family ◽  
Genus 2 ◽  
Insight Into

AbstractThe clownfish-sea anemone symbiosis has been a model system for understanding fundamental evolutionary and ecological processes. However, our evolutionary understanding of this symbiosis comes entirely from studies of clownfishes. A holistic understanding of a model mutualism requires systematic, biogeographic, and phylogenetic insight into both partners. Here, we conduct the largest phylogenetic analysis of sea anemones (Order Actiniaria) to date, with a focus on expanding the biogeographic and taxonomic sampling of the 10 nominal clownfish-hosting species. Using a combination of mtDNA and nuDNA loci we test 1) the monophyly of each clownfish-hosting family and genus, 2) the current anemone taxonomy that suggests symbioses with clownfishes evolved multiple times within Actiniaria, and 3) whether, like the clownfishes, there is evidence that host anemones have a Coral Triangle biogeographic origin. Our phylogenetic reconstruction demonstrates widespread poly-and para-phyly at the family and genus level, particularly within the family Stichodactylidae and genus Sticodactyla, and suggests that symbioses with clownfishes evolved minimally three times within sea anemones. We further recover evidence for a Tethyan biogeographic origin for some clades. Our data provide the first evidence that clownfish and some sea anemone hosts have different biogeographic origins, and that there may be cryptic species of host anemones. Finally, our findings reflect the need for a major taxonomic revision of the clownfish-hosting sea anemones.

The Child’s Guardian – Listening and Giving Weight to Children’s Views

2018 ◽  
Vol 26 (1) ◽  
pp. 117-135 ◽  
Author(s):  
Helen James ◽  
David Lane
Keyword(s):  
Child Protection ◽  
Justice System ◽  
Protection System ◽  
Review Panel ◽  
England And Wales ◽  
The Family ◽  
Research Findings ◽  
Children’S Views ◽  
Meaningful Relationships ◽  
Insight Into

Both the child protection and public child law systems assume a child-centred approach is at the heart of their work with children. That assumption is based on what are considered child-centred principles, which are enshrined in legislation in England and Wales in the Children Act 1989, mainly the principle of paramountcy of the child’s welfare in Section 1(1) and the principle of no delay in Section 1(2), in relation to the completion of proceedings ( hm Government, 1989). However, comprehensive reviews of both the child protection system (Munro, 2011) and the family justice system (Family Justice Review Panel, 2011), along with research findings (Cappleman et al., 2013) present a picture that challenges this assumption. Increasingly, the focus on the child’s life and welfare is hampered by a lack of time and resources available to professionals such as Guardians to enable them establish a meaningful and trusting relationship with the child in order to gain insight into and an understanding of the child’s world from the child’s perspective. The child appears to be very much on the periphery of a system that lacks real connectedness with the child and their view of their situation and circumstances. Such a level of connectedness can only be achieved by providing children with space and time to develop trust in and meaningful relationships with those whose duty it is to represent their true wishes and feelings and give due weight to the child’s perspective.

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