Efficient regeneration of protoplasts from cultivar Micro-Tom.

Protoplast regeneration has become a key platform for genetic and genome engineering. However, we lack reliable and reproducible methods for efficient protoplast regeneration for tomato () cultivars. Here, we optimized cell and tissue culture methods for protoplast isolation, microcallus proliferation, shoot regeneration, and plantlet establishment of the tomato cultivar Micro-Tom.

Efficient Plant Regeneration System from Leaf Explant Cultures of via Somatic Embryogenesis.

This study aimed to establish an efficient plant regeneration system from leaf-derived embryogenic structure cultures of . To induce embryogenic structures, fully expanded leaf explants of were cultured on Murashige and Skoog (MS) medium supplemented with 0, 0.1, 0.

Effects of TSA, NaB, Aza in Lactuca sativa L. protoplasts and effect of TSA in Nicotiana benthamiana protoplasts on cell division and callus formation.

Whole-plant regeneration via plant tissue culture is a complex process regulated by several genetic and environmental conditions in plant cell cultures. Recently, epigenetic regulation has been reported to play an important role in plant cell differentiation and establishment of pluripotency. Herein, we tested the effects of chemicals, which interfere with epigenetic regulation, on the plant regeneration from mesophyll protoplasts of lettuce.

Development of late-bolting plants by CRISPR/Cas9-mediated genome editing from mesophyll protoplasts of lettuce.

CRISPR/Cas9-mediated introduction of a single base mutation in SOC1, a transcription factor that regulates flowering time, results in late-bolting phenotypes in lettuce. Lettuce is a widely consumed leafy vegetable crop. One of the molecular approaches that can increase leaf yield of lettuce is to delay the onset of flowering.

Plant Growth Promotion by Two Volatile Organic Compounds Emitted From the Fungus NGPF1.

Microbial volatiles have beneficial roles in the agricultural ecological system, enhancing plant growth and inducing systemic resistance against plant pathogens without being hazardous to the environment. The interactions of plant and fungal volatiles have been extensively studied, but there is limited research specifically elucidating the effects of distinct volatile organic compounds (VOCs) on plant growth promotion. The current study was conducted to investigate the impact of VOCs from NGPF1 on plant growth, and to elucidate the mechanisms for the plant growth-promoting (PGP) activity of these VOCs.

Anti-Inflammatory Effects of Callus Extract via Suppression of MAPK and NF-κB Signaling.

is used in folk medicine to treat pain and allergic syndromes in Korea. However, the antibacterial and anti-inflammatory activities of callus extract remain unexplored. In this study, we aimed to evaluate the callus of pharmacological activity.

TSA Promotes CRISPR/Cas9 Editing Efficiency and Expression of Cell Division-Related Genes from Plant Protoplasts.

Trichostatin A (TSA) is a representative histone deacetylase (HDAC) inhibitor that modulates epigenetic gene expression by regulation of chromatin remodeling in cells. To investigate whether the regulation of chromatin de-condensation by TSA can affect the increase in the efficiency of Cas9 protein-gRNA ribonucleoprotein (RNP) indel formation from plant cells, genome editing efficiency using lettuce and tobacco protoplasts was examined after several concentrations of TSA treatments (0, 0.1, 1 and 10 μM).

Efficient plant regeneration from embryogenic cell suspension cultures of Euonymus alatus.

To establish an efficient plant regeneration system from cell suspension cultures of Euonymus alatus, embryogenic callus formation from immature embryos was investigated. The highest frequency of embryogenic callus formation reached 50% when the immature zygotic embryos were incubated on Murashige and Skoog (MS) medium supplemented with 1 mg/L 2,4-dichlorophenoxy acetic acid (2,4-D). At higher concentrations of 2,4-D (over 2 mg/L), the frequency of embryogenic callus formation declined significantly.

sp. nov., an endophytic bacterium isolated from .

An aerobic, Gram-stain-negative, weak-motile, short-rod-shaped bacterial strain, designated JBR3-12, was isolated from halophyte plants, and its taxonomic position was investigated by using a polyphasic taxonomic approach. The strain produced a pink pigment on tryptic soy agar and grew optimally at 25 °C, pH 8 and in the presence of 3 % (w/v) NaCl. Results of phylogenetic analysis based on 16S rRNA gene sequences showed that strain JBR3-12 formed a lineage within the genus and was most closely related to DS-27 (98.

Optimization of protoplast regeneration in the model plant Arabidopsis thaliana.

Background: Plants have a remarkable reprogramming potential, which facilitates plant regeneration, especially from a single cell. Protoplasts have the ability to form a cell wall and undergo cell division, allowing whole plant regeneration. With the growing need for protoplast regeneration in genetic engineering and genome editing, fundamental studies that enhance our understanding of cell cycle re-entry, pluripotency acquisition, and de novo tissue regeneration are essential.

sp. nov., an endophytic bacterium isolated from roots.

A Gram-stain-positive, facultatively anaerobic, rod-shaped, endospore-forming, oxidase-positive, and catalase-negative strain designated as BRMEA1 was isolated from the surface-sterilized roots. Growth of strain BRMEA1 was found to occur at pH 6.0-8.

Development of a Rapid Selection System for Salt-Resistant Mutants of through Protoplast Culture after Gamma Irradiation.

We aimed to develop a novel technology capable of rapidly selecting mutant plant cell lines. Salt resistance was chosen as a rapid selection trait that is easily applicable to protoplast-derived cell colonies. Mesophyll protoplasts were cultured in a medium supplemented with 0, 50, 100, 150, 200, 250, and 300 mM NaCl.

Anti-Inflammatory Activities of an Extract of In Vitro Grown Adventitious Shoots of in LPS-Treated RAW264.7 and -Treated HaCaT Cells.

has been traditionally used to treat dysentery, enteritis, flatulence, and itchiness. However, the existence of anti-inflammatory effects of on -induced skin disease is unknown. In vitro cultures of plant cells and tissues produced under controlled conditions offer a continuous production platform for plant natural products including pigments and anti-inflammatory agents.

The Effect of Sodium Butyrate on Adventitious Shoot Formation Varies among the Plant Species and the Explant Types.

Histone acetylation plays an important role in plant growth and development. Here, we investigated the effect of sodium butyrate (NaB), a histone deacetylase inhibitor, on adventitious shoot formation from protoplast-derived calli and cotyledon explants of tobacco () and tomato (). The frequency of adventitious shoot formation from protoplast-derived calli was higher in shoot induction medium (SIM) containing NaB than in the control.

Temporal and Spatial Expression Analysis of Shoot-Regeneration Regulatory Genes during the Adventitious Shoot Formation in Hypocotyl and Cotyledon Explants of Tomato (CV. Micro-Tom).

Enhancing the competence for plant regeneration in tissue culture studies is an important issue not only for efficient genetic transformation of commercial crops but also for the reproducibility of scientific reports. In this study, we investigated optimization of several tissue culture conditions including plant growth regulators, types and ages of explants, culture densities, and plant position in order to improve the competence of adventitious shoot formation of the tomato ( cv. Micro-Tom).

The Synergistic Effect of Co-Treatment of Methyl Jasmonate and Cyclodextrins on Pterocarpan Production in Sophora flavescens Cell Cultures.

Pterocarpans are derivatives of isoflavonoids, found in many species of the family Fabaceae. Aiton is a promising traditional Asian medicinal plant. Plant cell suspension cultures represent an excellent source for the production of valuable secondary metabolites.

Reclassification of genus into the family based on phylogenetic and genomic analyses.

The genus was established and designated as a member of the family in 2016. Although the taxonomical classification of most members in this family has been relatively resolved after two reclassifications in 2016 and 2017, the classification of the genus remains ambiguous. In this study, a polyphasic approach was used to provide evidence supporting the fact that the genus should no longer be considered a member of and proposes its reclassification into the family .

Jejubacter calystegiae gen. nov., sp. nov., moderately halophilic, a new member of the family Enterobacteriaceae, isolated from beach morning glory.

Strain KSNA2, a Gram-negative, moderately halophilic, facultatively anaerobic, motile, rod-shaped bacterium, was isolated from the surface-sterilized stem tissue of a beach morning glory (Cafystegia soldanella) plant in Chuja Island, Jeju-do, Republic of Korea. Phylogenetic analysis based on 16S rRNA gene and whole-genome sequences revealed that strain KSNA2 formed a distinct lineage within the family Enterobacteriaceae, with the highest 16S rRNA gene sequence similarity to Izhakiella australiensis KCTC 72143 (96.2%) and Izhakiella capsodis KCTC 72142 (96.

Saccharibacillus brassicae sp. nov., an endophytic bacterium isolated from kimchi cabbage (Brassica rapa subsp. pekinensis) seeds.

Strain ATSA2 was isolated from surface-sterilized kimchi cabbage (Brassica rapa subsp. pekinensis) seeds and represents a novel bacterium based on the polyphasic taxonomic approach. A phylogenetic analysis based on 16S rRNA gene sequences showed that strain ATSA2 formed a lineage within genus Saccharibacillus and was most closely to Saccharibacillus deserti WLG055 (98.

Potential of Pantoea dispersa as an effective biocontrol agent for black rot in sweet potato.

Biocontrol offers a promising alternative to synthetic fungicides for the control of a variety of pre- and post-harvest diseases of crops. Black rot, which is caused by the pathogenic fungus Ceratocytis fimbriata, is the most destructive post-harvest disease of sweet potato, but little is currently known about potential biocontrol agents for this fungus. Here, we isolated several microorganisms from the tuberous roots and shoots of field-grown sweet potato plants, and analyzed their ribosomal RNA gene sequences.

Whole-genome sequence data and analysis of sp. ATSA2 isolated from Kimchi cabbage seeds.

sp. ATSA2 was isolated from Kimchi cabbage seeds grown in Gyeongbuk province in the Republic of Korea. Whole-genome sequencing of sp.

Cohnella abietis sp. nov., isolated from Korean fir (Abies koreana) rhizospheric soil of Halla mountain.

A strictly aerobic, motile, endospore-forming, rod-shaped bacterium, designated HS21, was isolated from rhizospheric soil of the Korean fir tree (Abies koreana) from Halla mountain on Jeju island, Korea. Growth of strain HS21 was observed at pH 6.0-8.