Review
Biochemistry & Molecular Biology
Maria Guadalupe Villa-Rivera, Neftali Ochoa-Alejo
Summary: Chili peppers, an important horticultural crop cultivated and commercialized worldwide, undergo a ripening process that enhances their quality and nutritional value through changes in color, flavor, aroma, and texture. Ripening of chili peppers involves a series of physiological, biochemical, and molecular changes that must be finely regulated at the transcriptional level. This review integrates knowledge on transcription factors regulating different stages of the chili pepper ripening process.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Horticulture
Na-Young Ro, Raveendar Sebastin, On-Sook Hur, Gyu-Taek Cho, Bora Geum, Yong-Jik Lee, Byoung-Cheorl Kang
Summary: Anthracnose, caused by Colletotrichum spp., is a major fungal disease affecting pepper production globally. Evaluation of resistance in 3738 pepper genetic resources identified potential sources of resistance to C. acutatum, with further validation using molecular markers for breeding programs.
Article
Horticulture
Rabindra Ramjattan, Pathmanathan Umaharan
Summary: The study investigated the genetic diversity of yield and its components in Capsicum chinense, finding considerable genetic diversity for all traits except flowers per node. Fruit number, clusters per plant, and shoot dry weight were identified as important yield attributes. Promising accessions for hot pepper production have been identified through the study and analysis of yield and partitioning components.
SCIENTIA HORTICULTURAE
(2021)
Article
Horticulture
Marcela Martinez, Camila Peixoto dos Santos, Marta Regina Verruma-Bernardi, Elma Neide Vasconcelos Martins Carrilho, Paula Porrelli Moreira da Silva, Marta Helena Fillet Spoto, Isabella Rocha Ciarrocchi, Fernando Cesar Sala
Summary: Capsicum chinense peppers have wide genetic diversity and increasing demand. The study found that hybrids F1 12 and F1 23 have the potential to be new cultivars with good agronomic, nutritional, and sensory characteristics.
SCIENTIA HORTICULTURAE
(2021)
Article
Multidisciplinary Sciences
Pasquale Tripodi, Mark Timothy Rabanus-Wallace, Lorenzo Barchi, Sandip Kale, Salvatore Esposito, Alberto Acquadro, Roland Schafleitner, Maarten van Zonneveld, Jaime Prohens, Maria Jose Diez, Andreas Borner, Jeremy Salinier, Bernard Caromel, Arnaud Bovy, Filiz Boyaci, Gancho Pasev, Ronny Brandt, Axel Himmelbach, Ezio Portis, Richard Finkers, Sergio Lanteri, Ilan Paran, Veronique Lefebvre, Giovanni Giuliano, Nils Stein
Summary: Through genomic scans and SNP analysis, this study delves into the genetic diversity of 10,038 pepper accessions from genebanks worldwide, revealing the history and global distribution of peppers. Findings show interspecific hybridization and taxonomic errors are common, indicating human preferences play a major role in shaping the genetic structure of peppers.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Horticulture
Tanyarat Tarinta, Saksit Chanthai, Eiji Nawata, Suchila Techawongstien
Summary: This study aimed to evaluate the general and specific combining ability for CATs and CAPs contents in pepper. The results showed that the environment significantly affected the yield and phytochemical contents of pepper. Additive gene action played an important role in CAT, Sum CATs, CAT yield, and Sum CAPs traits, while non-additive gene action was crucial for the accumulation of DI-CAT. The parental lines 203, 201, 101, and 202 were identified as the best parents for fruit yield, sum CAPs, sum CATs, and CAT yield, respectively.
Article
Plant Sciences
Nayoung Ro, Mesfin Haile, Onsook Hur, Bora Geum, Juhee Rhee, Aejin Hwang, Bitsam Kim, Jeaeun Lee, Bum-Soo Hahn, Jundae Lee, Byoung-Cheorl Kang
Summary: The resistance of pepper accessions to Phytophthora blight was evaluated and SNP markers associated with resistance were identified through a genome-wide association study. One of the SNP markers was converted into a high-resolution melting marker, and another marker was used for validation and comparison. These markers can accurately predict the Phytophthora blight resistance of pepper genetic resources.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Horticulture
Dennis N. Lozada, Lanie Whelpley, Andrea Acuna-Galindo
Summary: This study conducted a meta-QTL analysis for various traits in chile peppers, identifying 30 meta-QTL regions, with two related to Phytophthora capsici fruit and root rot resistance. Candidate gene analysis revealed functions related to histone methylation and demethylation for the P5 meta-QTL.
Review
Plant Sciences
Dennis N. Lozada, Paul W. Bosland, Derek W. Barchenger, Mahdi Haghshenas-Jaryani, Soumaila Sanogo, Stephanie Walker
Summary: This study summarizes major developments in chili pepper breeding and introduces novel tools for genetic improvement that can be implemented.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Youngin Kim, Geon Woo Kim, Koeun Han, Hea-Young Lee, Jinkwan Jo, Jin-Kyung Kwon, Zachary Lemmon, Zachary Lippman, Byoung-Cheorl Kang
Summary: This study identifies key genes that control the formation of multiple flowers in Capsicum, providing a new approach to breeding high-yielding pepper varieties.
FRONTIERS IN PLANT SCIENCE
(2022)
Review
Food Science & Technology
Di Zhang, Xiaoxia Sun, Maurizio Battino, Xiaoou Wei, Jiyong Shi, Lei Zhao, Si Liu, Jianbo Xiao, Bolin Shi, Xiaobo Zou
Summary: This study compared the bioactive composition, organoleptic properties, and pharmacological activities of Sichuan pepper (pericarps and leaves) and chili pepper (fruits). It found that both peppers are rich in alkylamides, polyphenols, and odorants, but the structures of their bioactive ingredients are significantly different. Capsaicinoids are primarily identified in chili peppers while coumarins are specific to Sichuan pepper. The pungent sensations evoked by capsaicin and hydroxyl-alpha-sanshool are distinct due to their interactions with membrane ion channels. Additionally, extracts and compounds from both peppers show potential in alleviating various health conditions, but further clinical trials are needed to confirm their effects.
TRENDS IN FOOD SCIENCE & TECHNOLOGY
(2021)
Article
Agronomy
Suyun Moon, Nayoung Ro, Junhong Kim, Ho-Cheol Ko, Sukyeung Lee, Hyeonseok Oh, Bichsaem Kim, Ho-Sun Lee, Gi-An Lee
Summary: In this study, the morphological characteristics and phytochemical contents of 513 pepper accessions belonging to two Capsicum species were investigated. The results showed wide variations in morphological traits and phytochemical contents between the accessions and across species. Fruit color and orientation were found to be associated with phytochemical contents. Multivariate and cluster analysis revealed distinct groups of Capsicum germplasm.
Article
Biochemistry & Molecular Biology
Magda L. Arce-Rodriguez, Octavio Martinez, Neftali Ochoa-Alejo
Summary: The study conducted comprehensive analyses of the MYB family in chili pepper, identifying 235 non-redundant MYB proteins and revealing their functions and differential expression within the transcription factor family. Results suggest that CaMYB genes may play a regulatory role in the biosynthesis of phenylpropanoid, capsaicinoid, and vitamin C.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Plant Sciences
Abate Mekonnen Solomon, Tae-Gun Kim, Koeun Han, Hea-Young Lee, Abhinandan Patil, Muhammad Irfan Siddique, Jeonghwan Ahn, Byoung-Cheorl Kang
Summary: The orientation of pepper fruits is controlled by a dominant gene, which was identified and localized on chromosome 12 through QTL analysis and GWAS. The study narrowed down the region of interest based on two markers completely cosegregated with the phenotype, providing insights for understanding pepper fruit development and breeding for fruit orientation.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Agronomy
Tsung Han Lin, Shih Wen Lin, Yen Wei Wang, Maarten van Zonneveld, Derek W. Barchenger
Summary: The study validated the utility of in vitro heat stress pollen characterization through in vivo pollination during summer and winter seasons. Significant associations between in vitro pollen treatment and pollination success rate were identified, with heat treatment being a greater contributor to variability than the growing environment. Accessions of the wild progenitor C. annuum var glabriusculum were identified as a potential heat-tolerant source for breeding and future research.
