Genetic and biotechnological tools to identify breeding targets for improving postharvest quality and extending shelf life of peppers. (December 2022)

• Record Type: Journal Article
• Authors: Ziv, Carmit; Lers, Amnon; Fallik, Elazar; Paran, Ilan
• Is Part Of: Current opinion in biotechnology. Volume 78(2022)
• Publication Date: 2022-12
• Subjects: Biotechnology -- Periodicals; 660.6
• DOI: 10.1016/j.copbio.2022.102794
• Languages: English
• ISSNs: 0958-1669

Abstract

Abstract : Improved postharvest storage is a major target for pepper-crop production. The three main components of postharvest improvement of pepper fruit are reducing water-loss rate, reducing chilling susceptibility, and increasing resistance to pathogens. To date, a small number of Quantitative Trait Locus (QTL) studies have been reported for reduced water loss and enhanced tolerance to chilling and anthracnose. More effort is needed to screen germplasm collections for accessions with improved postharvest traits. Molecular studies have enabled the identification of candidate genes conferring reduced susceptibility to chilling injury and pathogen infection in pepper fruit, and in related crops such as tomato — which may be implemented in pepper. Manipulation of the activity of these genes by genome editing can improve postharvest pepper quality. Graphical Abstract: ga1 Highlights: Cuticle-associated water loss is the major cause of pepper-fruit softening. Control of cold-response gene expression reduces cold-storage injuries. Sources and QTLs for anthracnose resistance identified and used in breeding. Control of immune-response gene expression reduces anthracnose infection. Genomic editing of candidate genes may facilitate improvement of pepper quality.