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Advances in Genetic Breeding of Sweetpotato
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Advances in Genetic Breeding of Sweetpotato

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

Deadline for manuscript submissions: 20 November 2024 | Viewed by 1632

Special Issue Editor

Dr. Meng Kou

E-Mail Website
Guest Editor
Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai District/Jiangsu Xuzhou Sweetpotato Research Center/Key Laboratory of Biology and Genetic Improvement of Sweetpotato, Ministry of Agriculture and Rural Affairs/Sweetpotato Research Institute, Chinese Academy of Agricultural Sciences, Xuzhou 221131, China
Interests: sweet potato; genetic breeding; gene function; molecular biology

Special Issue Information

Dear Colleagues,

Sweetpotato is one of the most important crops in the world and the main carbohydrate source for human beings. The important agronomic traits, i.e., high yield, outstanding quality, and resistance to biotic and abiotic stress have become the main objects in sweetpotato genetic breeding.

In recent years, with the development of RNA-sequencing and other omics technologies, many key genes have been discovered and their functions have also been revealed. This Special Issue is focused on recent research progress in genetic diversity analysis, QTL or gene discovery, molecular mechanism study, molecular marker-assisted breeding techniques, and the development of sweetpotato genetic breeding.

Dr. Meng Kou
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Genes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • sweet potato
  • genetic breeding
  • gene function
  • molecular biology

Published Papers (2 papers)

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Research

21 pages, 10875 KiB  
Article
A Sweet Potato MYB Transcription Factor IbMYB330 Enhances Tolerance to Drought and Salt Stress in Transgenic Tobacco
by Chong Wang, Jian Lei, Xiaojie Jin, Shasha Chai, Chunhai Jiao, Xinsun Yang and Lianjun Wang
Genes 2024, 15(6), 693; https://doi.org/10.3390/genes15060693 - 26 May 2024
Viewed by 303
Abstract
MYB transcription factors (TFs) play vital roles in plant growth, development, and response to adversity. Although the MYB gene family has been studied in many plant species, there is still little known about the function of R2R3 MYB TFs in sweet potato in [...] Read more.
MYB transcription factors (TFs) play vital roles in plant growth, development, and response to adversity. Although the MYB gene family has been studied in many plant species, there is still little known about the function of R2R3 MYB TFs in sweet potato in response to abiotic stresses. In this study, an R2R3 MYB gene, IbMYB330 was isolated from sweet potato (Ipomoea batatas). IbMYB330 was ectopically expressed in tobacco and the functional characterization was performed by overexpression in transgenic plants. The IbMYB330 protein has a 268 amino acid sequence and contains two highly conserved MYB domains. The molecular weight and isoelectric point of IbMYB330 are 29.24 kD and 9.12, respectively. The expression of IbMYB330 in sweet potato is tissue-specific, and levels in the root were significantly higher than that in the leaf and stem. It showed that the expression of IbMYB330 was strongly induced by PEG-6000, NaCl, and H2O2. Ectopic expression of IbMYB330 led to increased transcript levels of stress-related genes such as SOD, POD, APX, and P5CS. Moreover, compared to the wild-type (WT), transgenic tobacco overexpression of IbMYB330 enhanced the tolerance to drought and salt stress treatment as CAT activity, POD activity, proline content, and protein content in transgenic tobacco had increased, while MDA content had decreased. Taken together, our study demonstrated that IbMYB330 plays a role in enhancing the resistance of sweet potato to stresses. These findings lay the groundwork for future research on the R2R3-MYB genes of sweet potato and indicates that IbMYB330 may be a candidate gene for improving abiotic stress tolerance in crops. Full article
(This article belongs to the Special Issue Advances in Genetic Breeding of Sweetpotato)
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23 pages, 7508 KiB  
Article
Genome-Wide Identification and Expression Analysis of the DMP and MTL Genes in Sweetpotato (Ipomoea batatas L.)
by Zhiyuan Pan, Zongyun Li, Yonghua Han and Jian Sun
Genes 2024, 15(3), 354; https://doi.org/10.3390/genes15030354 - 12 Mar 2024
Viewed by 1005
Abstract
Sweetpotato (Ipomoea batatas L.) is a strategic crop with both economic and energy value. However, improving sweetpotato varieties through traditional breeding approaches can be a time-consuming and labor-intensive process due to the complex genetic nature of sweetpotato as a hexaploid species (2n [...] Read more.
Sweetpotato (Ipomoea batatas L.) is a strategic crop with both economic and energy value. However, improving sweetpotato varieties through traditional breeding approaches can be a time-consuming and labor-intensive process due to the complex genetic nature of sweetpotato as a hexaploid species (2n = 6x = 90). Double haploid (DH) breeding, based on in vivo haploid induction, provides a new approach for rapid breeding of crops. The success of haploid induction can be achieved by manipulating specific genes. Two of the most critical genes, DMP (DUF679 membrane proteins) and MTL (MATRILINEAL), have been shown to induce haploid production in several species. Here, we identified and characterized DMP and MTL genes in sweetpotato using gene family analysis. In this study, we identified 5 IbDMPs and 25 IbpPLAs. IbDMP5 and IbPLAIIs (IbPLAIIκ, IbPLAIIλ, and IbPLAIIμ) were identified as potential haploid induction (HI) genes in sweetpotato. These results provide valuable information for the identification and potential function of HI genes in sweetpotato and provide ideas for the breeding of DH lines. Full article
(This article belongs to the Special Issue Advances in Genetic Breeding of Sweetpotato)
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