African violet (Saintpaulia ionantha) is an herbaceous perennial of the Gesneriaceae family. Because almost all the cultivars are heterozygous, pure lines are useful for both classical and new breeding approaches. A shortcut to obtain purebred lines involves the production of doubled haploid strains produced from anther-derived haploids. In this chapter, a protocol for culturing African violet anthers is described in detail.
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http://dx.doi.org/10.1007/978-1-0716-1331-3_16 | DOI Listing |
J Mol Histol
December 2024
Department of Clinical Laboratory, The Second Hospital of Shandong University, 247 Beiyuan Street, Jinan City, 250000, Shandong Province, China.
The purpose of this study was to explore the inhibitory effect of andrographolide on the expression of key regulatory genes involved in the biofilm formation of Staphylococcus epidermidis (SE). Taking the film-producing strain Staphylococcus epidermidis SE1457 as the research object, the effect of andrographolide on the formation of Staphylococcus epidermidis biofilms was analyzed via crystal violet staining, and biofilm models of SE adhesion, aggregation and maturity were established in vitro. RT‒PCR was used to detect the effects of the expression of icaA-, atlE-, aap- and luxS-related genes of andrographolide on biofilm formation in SE.
View Article and Find Full Text PDFHelicobacter
November 2024
Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon.
Background: Although Helicobacter pylori infection (H. pylori) prevalence in Africa has declined in the last decade, it remains concerningly high. H.
View Article and Find Full Text PDFSci Total Environ
November 2024
School of Science, Technology and Engineering, The University of the Sunshine Coast, Sippy Downs, QLD, Australia.
Responses of organisms to climate warming are variable and complex. Effects on species distributions are already evident and mean global surface ocean temperatures are likely to warm by up to 4.1 °C by 2100, substantially impacting the physiology and distributions of ectotherms.
View Article and Find Full Text PDFEnviron Monit Assess
March 2024
Aquatic Systems Research Group, School of Biology and Environmental Sciences, University of Mpumalanga, Nelspruit, 1200, South Africa.
Effective water resources management and monitoring are essential amid increasing challenges posed by population growth, industrialization, urbanization, and climate change. Earth observation techniques offer promising opportunities to enhance water resources management and support informed decision-making. This study utilizes Landsat-8 OLI and Sentinel-2 MSI satellite data to estimate chlorophyl-a (chl-a) concentrations in the Nandoni reservoir, Thohoyandou, South Africa.
View Article and Find Full Text PDFHeliyon
March 2024
School of Life Sciences and Bioengineering, The Nelson Mandela African Institution of Science and Technology, Arusha, 447, Tanzania.
Anthracnose caused by is the major common bean disease worldwide causing complete yield loss under favourable disease conditions. This study aimed to determine phenotypic traits associated with anthracnose resistance for future use in breeding programmes. Twenty-two common bean varieties (CBVs) were selected basing on susceptibility to anthracnose, advanced breeding lines, improved variety resembling advanced breeding lines and the farmer variety widely grown in Tanzania.
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