International Journal of Molecular Sciences

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Advances in Research for Solanaceae Breeding and Genetics

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Dear Colleagues,

Over the last decades, valuable contributions to genetics and breeding were provided in several Solanaceae species. The dissection of complex agronomic traits and breeding methodologies is improving thanks to genomics approaches. In addition, the development of comparative genomic tools contributed to accelerating the discovery of related species. Therefore, relevant achievements obtained in those species, such as tomato, potato, pepper, and eggplant, are a result of interest in other Solanaceous. Moreover, the progresses made in new breeding techniques, such as gene editing can have great potential to precisely change a trait of interest in a well-designed breeding program. This Special Issue will focus on the advances in genetic, genomics and biotechnological approaches available for the genetic improvement of Solanaceae. Moreover, genetic studies for traits of interest and potential strategies to adapt crops to the impacts of climate change are also welcome.

Dr. Maria R. Ercolano
Guest Editor

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Keywords

Solanaceae species
genomic approaches
mapping
new breeding techniques
genome editing

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24 pages, 11403 KiB

Open AccessArticle

Genome-Wide Identification and Expression Profiling of Potato (Solanum tuberosum L.) Universal Stress Proteins Reveal Essential Roles in Mechanical Damage and Deoxynivalenol Stress

by Tianshuai Qi, Fumeng He, Xinqi Zhang, Jiaqi Wang, Zengli Zhang, Heran Jiang, Biao Zhao, Chong Du, Yunzhu Che, Xu Feng, Yingnan Wang and Fenglan Li

Int. J. Mol. Sci. 2024, 25(2), 1341; https://doi.org/10.3390/ijms25021341 - 22 Jan 2024

Viewed by 979

Abstract

Universal stress proteins (USPs) play an important regulatory role in responses to abiotic stress. Most of the research related to USPs so far has been conducted on plant models such as Arabidopsis (Arabidopsis thaliana), rice (Oryza sativa L.), and cotton (Gossypium hirsutum L.). The potato (Solanum tuberosum L.) is one of the four major food crops in the world. The potato is susceptible to mechanical damage and infection by pathogenic fungi during transport and storage. Deoxynivalenol (DON) released by Fusarium can seriously degrade the quality of potatoes. As a result, it is of great significance to study the expression pattern of the potato StUSP gene family under abiotic stress conditions. In this study, a total of 108 USP genes were identified from the genome of the Atlantic potato, divided into four subgroups. Based on their genetic structure, the physical and chemical properties of their proteins and other aspects of their biological characteristics are comprehensively analyzed. Collinear analysis showed that the homologous genes of StUSPs and four other representative species (Solanum lycopersicum, Arabidopsis, Oryza sativa L., and Nicotiana attenuata) were highly conserved. The cis-regulatory elements of the StUSPs promoter are involved in plant hormones, environmental stress, mechanical damage, and light response. RNA-seq analysis showed that there are differences in the expression patterns of members of each subgroup under different abiotic stresses. A Weighted Gene Coexpression Network Analysis (WGCNA) of the central gene showed that the differential coexpression gene is mainly involved in the plant–pathogen response process, plant hormone signal transduction, and the biosynthesis process of secondary metabolites. Through qRT-PCR analysis, it was confirmed that StUSP13, StUSP14, StUSP15, and StUSP41 may be important candidate genes involved in the response to adversity stress in potatoes. The results of this study provide a basis for further research on the functional analysis of StUSPs in the response of potatoes to adversity stress. Full article

(This article belongs to the Special Issue Advances in Research for Solanaceae Breeding and Genetics)

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