Sweet Potato Genetics and Genomics: 2nd Edition

A special issue of Genes (ISSN 2073-4425). This special issue belongs to the section "Plant Genetics and Genomics".

Deadline for manuscript submissions: closed (25 September 2024) | Viewed by 1362

Special Issue Editors


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Guest Editor
Institute of Integrative Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou 221116, China
Interests: sweet potato; salt tolerance; transcription factors; regulatory mechanisms
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Guest Editor
College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
Interests: sweet potato; biotechnology; molecular biology; phytohormone
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Guest Editor
Crops Research Institute, Guangdong Academy of Agricultural Sciences/Key Laboratory of Crop Genetic Improvement of Guangdong Province, Guangzhou 510640, China
Interests: sweet potato; genome resource; phytopathology

Special Issue Information

Dear Colleagues,

Sweet potato (Ipomoea batatas (L.) Lam.) provides many unique advantages over other crops, such as adequate germplasm and genomic data resources, strong resistance, extensive adaptability, high and stable yields, excellent and balanced nutritional components, and diversified applications. It has been widely employed as a model system to solve an increasing variety of biological issues. However, compared with staple crops, such as rice, wheat, and maize, the biological research of sweet potato is significantly lagging behind, which seriously limits its molecular breeding and genetic improvement. This Special Issue therefore aims to integrate recent attempts to make significant progress in sweet potato biology by expanding knowledge in various research fields, including, but not limited to, biotic and abiotic stress response, tuberous root development, pigment synthesis and metabolism, biotechnology innovation, etc. The implementation of genetics, molecular biology, functional genomics, and omics studies (such as transcriptomics, proteomics, metabolomics, and epigenetics) is feasible. In this research topic, we intend to enrich sweet potato research by collecting all article types accepted in Genes, including original research articles, reviews, and mini-reviews related to sweet potato biology.

Dr. Mingku Zhu
Dr. Shaopei Gao
Dr. Lifei Huang
Guest Editors

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Keywords

  • sweet potato
  • biotic and abiotic stress response
  • functional genomics
  • omics studies
  • molecular biology
  • agricultural biotechnology

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Published Papers (1 paper)

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Research

14 pages, 3686 KiB  
Article
Chromosomal Localization and Diversity Analysis of 5S and 18S Ribosomal DNA in 13 Species from the Genus Ipomoea
by Jingyu Wu, Tao Lang, Cong Zhang, Fan Yang, Feiyang Yang, Huijuan Qu, Zhigang Pu and Junyan Feng
Genes 2024, 15(10), 1340; https://doi.org/10.3390/genes15101340 - 19 Oct 2024
Viewed by 997
Abstract
Background: Sweet potato (Ipomoea batatas (L.) Lam.), a key global root crop, faces challenges due to its narrow genetic background. This issue can be addressed by utilizing the diverse genetic resources of sweet potato’s wild relatives, which are invaluable for its genetic [...] Read more.
Background: Sweet potato (Ipomoea batatas (L.) Lam.), a key global root crop, faces challenges due to its narrow genetic background. This issue can be addressed by utilizing the diverse genetic resources of sweet potato’s wild relatives, which are invaluable for its genetic improvement. Methods: The morphological differences in leaves, stems, and roots among 13 Ipomoea species were observed and compared. Chromosome numbers were determined by examining metaphase cells from root tips. Fluorescence in situ hybridization (FISH) was used to identify the number of 5S and 18S rDNA sites in these species. PCR amplification was performed for both 5S and 18S rDNA, and phylogenetic relationships among the species were analyzed based on the sequences of 18S rDNA. Results: Three species were found to have enlarged roots among the 13 Ipomoea species. Chromosome analysis revealed that I. batatas had 90 chromosomes, Ipomoea pes-tigridis had 28 chromosomes, while the remaining species possessed 30 chromosomes. Detection of rDNA sites in the 13 species showed two distinct 5S rDNA site patterns and six 18S rDNA site patterns in the 12 diploid species. These rDNA sites occurred in pairs, except for the seven 18S rDNA sites observed in Ipomoea digitata. PCR amplification of 5S rDNA identified four distinct patterns, while 18S rDNA showed only a single pattern across the species. Phylogenetic analysis divided the 13 species into two primary clades, with the closest relationships found between I. batatas and Ipomoea trifida, as well as between Ipomoea platensis and I. digitata. Conclusions: These results enhance our understanding of the diversity among Ipomoea species and provide valuable insights for breeders using these species to generate improved varieties. Full article
(This article belongs to the Special Issue Sweet Potato Genetics and Genomics: 2nd Edition)
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