Exploring horticultural traits and disease resistance in Capsicum baccatum through segmental introgression lines.

Segmental introgression and advanced backcross lines were developed and validated as important tools for improving agronomically important traits in pepper, offering improved sensitivity in detecting quantitative trait loci for breeding. Segmental introgression lines (SILs) and advanced backcross lines (ABs) can accelerate genetics and genomics research and breeding in crop plants. This study presents the development of a complete collection of SILs and ABs in pepper using Capsicum annuum cv.

CRISPR/Cas9-Mediated Gene Editing Reduces Growth Inhibition in Chinese Cabbage () under ER Stress.

Various stresses can affect the quality and yield of crops, including vegetables. In this study, CRISPR/Cas9 technology was employed to examine the role of the () gene in influencing the growth of Chinese cabbage (). Single guide RNAs (sgRNAs) were designed to target the gene, and deep-sequencing analysis confirmed the induction of mutations in the bZIP domain of the gene.

CRISPR/Cas9-mediated gene editing to confer turnip mosaic virus (TuMV) resistance in Chinese cabbage ().

Genome editing approaches, particularly the CRISPR/Cas9 technology, are becoming state-of-the-art for trait development in numerous breeding programs. Significant advances in improving plant traits are enabled by this influential tool, especially for disease resistance, compared to traditional breeding. One of the potyviruses, the turnip mosaic virus (TuMV), is the most widespread and damaging virus that infects spp.

High-quality chromosome-scale genomes facilitate effective identification of large structural variations in hot and sweet peppers.

Pepper () is an important vegetable crop that has been subjected to intensive breeding, resulting in limited genetic diversity, especially for sweet peppers. Previous studies have reported pepper draft genome assemblies using short read sequencing, but their capture of the extent of large structural variants (SVs), such as presence-absence variants (PAVs), inversions, and copy-number variants (CNVs) in the complex pepper genome falls short. In this study, we sequenced the genomes of representative sweet and hot pepper accessions by long-read and/or linked-read methods and advanced scaffolding technologies.

Genetic mapping revealed that the gene in encodes a putative aminotransferase.

Several genes regulating capsaicinoid biosynthesis including (also known as ), , , and have been studied. However, the gene encoded by in the non-pungent is unknown. This study aimed to identify the gene by genetic mapping using interspecific ( × ) and intraspecific ( × ) populations.

Identification of Genetic Factors Controlling the Formation of Multiple Flowers Per Node in Pepper ( spp.).

Flower production provides the foundation for crop yield and increased profits. is a pepper species with a sympodial shoot structure with solitary flowers. By contrast, produces multiple flowers per node.

Genotyping-by-Sequencing Derived Genetic Linkage Map and Quantitative Trait Loci for Sugar Content in Onion ( L.).

Onion (2n = 2x = 16) has been a nutritional, medicinal and economically valuable vegetable crop all over the world since ancient times. To accelerate the molecular breeding in onion, genetic linkage maps are prerequisite. However, construction of genetic linkage maps of onion remains relatively rudimentary due to a large genome (about 16.

Genome-Wide Analysis of MYB10 Transcription Factor in and Identification of QTLs Associated with Fruit Color in Octoploid Strawberry.

The genus encompass fruits with diverse colors influenced by the distribution and accumulation of anthocyanin. Particularly, the fruit colors of strawberries with different ploidy levels are determined by expression and natural variations in the vital structural and regulatory genes involved in the anthocyanin pathway. Among the regulatory genes, MYB10 transcription factor is crucial for the expression of structural genes in the anthocyanin pathway.

Chromosome Level Assembly of Homozygous Inbred Line 'Wongyo 3115' Facilitates the Construction of a High-Density Linkage Map and Identification of QTLs Associated With Fruit Firmness in Octoploid Strawberry ( × ).

Strawberry is an allo-octoploid crop with high genome heterozygosity and complexity, which hinders the sequencing and the assembly of the genome. However, in the present study, we have generated a chromosome level assembly of octoploid strawberry sourced from a highly homozygous inbred line 'Wongyo 3115', using long- and short-read sequencing technologies. The assembly of 'Wongyo 3115' produced 805.

Fine Mapping and Candidate Gene Identification for the Locus Controlling Fruit Orientation in Pepper ( spp.).

The orientation of fruits is a distinguishing morphological feature of pepper ( spp.) varieties. The pendent (downward curved) growth of the fruit stalks, known as pedicels, is highly correlated with fruit weight and pedicel length.

QTL Mapping for Gummy Stem Blight Resistance in Watermelon ( spp.).

Watermelon () is an economically important fruit crop worldwide. Gummy stem blight (GSB) is one of the most damaging diseases encountered during watermelon cultivation. In the present study, we identified quantitative trait loci (QTLs) associated with GSB resistance in an F population derived from a cross between maternal-susceptible line '920533' () and the paternal-resistant line 'PI 189225' ().

Versatile Nutraceutical Potentials of Watermelon-A Modest Fruit Loaded with Pharmaceutically Valuable Phytochemicals.

Watermelon () is an important horticultural crop which belongs to the Curcubitaceae family. The nutraceutical potential of watermelon has been illustrated by several researchers, which makes it a better choice of functional food. Watermelon has been used to treat various ailments, such as cardio-vascular diseases, aging related ailments, obesity, diabetes, ulcers, and various types of cancers.

Development and Characterization of an Ethyl Methane Sulfonate (EMS) Induced Mutant Population in L.

Plant breeding explores genetic diversity in useful traits to develop new, high-yielding, and improved cultivars. Ethyl methane sulfonate (EMS) is a chemical widely used to induce mutations at loci that regulate economically essential traits. Additionally, it can knock out genes, facilitating efforts to elucidate gene functions through the analysis of mutant phenotypes.

Identifying candidate genes for Phytophthora capsici resistance in pepper (Capsicum annuum) via genotyping-by-sequencing-based QTL mapping and genome-wide association study.

Phytophthora capsici (Leon.) is a globally prevalent, devastating oomycete pathogen that causes root rot in pepper (Capsicum annuum). Several studies have identified quantitative trait loci (QTL) underlying resistance to P.

A MYB transcription factor is a candidate to control pungency in Capsicum annuum.

Identification of a novel pungency-controlling gene Pun3, which acts as a master regulator of capsaicinoid biosynthetic genes in Capsicum annuum. Capsaicinoid is a unique compound that gives hot peppers (Capsicum spp.) their spicy taste.

Single-molecule real-time sequencing reveals diverse allelic variations in carotenoid biosynthetic genes in pepper (Capsicum spp.).

The diverse colours of mature pepper (Capsicum spp.) fruit result from the accumulation of different carotenoids. The carotenoid biosynthetic pathway has been well elucidated in Solanaceous plants, and analysis of candidate genes involved in this process has revealed variations in carotenoid biosynthetic genes in Capsicum spp.

A major QTL and candidate genes for capsaicinoid biosynthesis in the pericarp of Capsicum chinense revealed using QTL-seq and RNA-seq.

A major QTL and candidate genes controlling capsaicinoid content in the pericarp were identified by QTL-seq and RNA-seq in Capsicum chinense. Capsaicinoid biosynthesis was previously thought to be restricted to the placental tissue; however, the recent discovery of their biosynthesis in the pericarp provides new opportunities to increase the capsaicinoid content in pepper fruits. Currently, the genetic mechanisms regulating capsaicinoid biosynthesis in the pericarp remain unknown.

QTL mapping and GWAS reveal candidate genes controlling capsaicinoid content in Capsicum.

Capsaicinoids are unique compounds produced only in peppers (Capsicum spp.). Several studies using classical quantitative trait loci (QTLs) mapping and genomewide association studies (GWAS) have identified QTLs controlling capsaicinoid content in peppers; however, neither the QTLs common to each population nor the candidate genes underlying them have been identified due to the limitations of each approach used.

Molecular Mapping of , a Novel Locus Conferring Resistance to Powdery Mildew in Pepper ().

Powdery mildew, caused by , is a major fungal disease affecting greenhouse-grown pepper (). Powdery mildew resistance has a complex mode of inheritance. In the present study, we investigated a novel powdery mildew resistance locus, , using two mapping populations: 102 'VK515' F families (derived from a cross between resistant parental line 'VK515R' and susceptible parental line 'VK515S') and 80 'PM Singang' F plants (derived from the F 'PM Singang' commercial hybrid).

New reference genome sequences of hot pepper reveal the massive evolution of plant disease-resistance genes by retroduplication.

Background: Transposable elements are major evolutionary forces which can cause new genome structure and species diversification. The role of transposable elements in the expansion of nucleotide-binding and leucine-rich-repeat proteins (NLRs), the major disease-resistance gene families, has been unexplored in plants.

Results: We report two high-quality de novo genomes (Capsicum baccatum and C.

Development of a Genetic Map for Onion ( L.) Using Reference-Free Genotyping-by-Sequencing and SNP Assays.

Single nucleotide polymorphisms (SNPs) play important roles as molecular markers in plant genomics and breeding studies. Although onion ( L.) is an important crop globally, relatively few molecular marker resources have been reported due to its large genome and high heterozygosity.