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Genes
Special Issues
Genetic Breeding and Improvement of Peanut
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Genetic Breeding and Improvement of Peanut

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 November 2024) | Viewed by 1081

Special Issue Editor

Dr. Hui Song

E-Mail Website
Guest Editor
College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, China
Interests: peanut; abiotic stress; flowering time; functional genomics

Special Issue Information

Dear Colleagues,

Peanut (Arachis hypogaea) originated in South America through hybridization between A. duranensis and A. ipaensis, followed by chromosomal doubling, making it an allotetraploid. Peanuts are a source of oil and protein for human consumption and a forage source for livestock. The genomes of the cultivated peanut and those of its progenitors have been completely sequenced, further promoting the identification of key genes associated with various phenotypes. Moreover, many recombinant inbred lines have been constructed to identify key gene markers in peanuts. Now, these functional genes can be used for applications in molecular breeding. Furthermore, new functional genes related to growth and development and abiotic and biotic stress can be identified using muti-omics.

This Special Issue focuses on recent advances in molecular breeding and the genetic improvement of peanut. Submitted papers can investigate the following issues:

  1. Identify functional genes at peanut genome level using bioinformatic approaches;
  2. Use molecular markers to assist in selecting breeding materials and accelerate the breeding of superior genes;
  3. Explore and verify genetic transformation technology in peanuts;
  4. Verify the gene function and molecular mechanism in the growth, development, and stress response of peanut

Dr. Hui Song
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

  • functional gene
  • genetic transformation
  • molecular breeding
  • peanut

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Published Papers (1 paper)

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Research

15 pages, 3155 KiB  
Article
Transcriptome Analysis Deciphers the Underlying Molecular Mechanism of Peanut Lateral Branch Angle Formation Using Erect Branching Mutant
by Liangqiong He, Conghui Yu, Guanghao Wang, Lei Su, Xin Xing, Tiantian Liu, Zhipeng Huang, Han Xia, Shuzhen Zhao, Zhongkui Gao, Xingjun Wang, Chuanzhi Zhao, Zhuqiang Han and Jiaowen Pan
Genes 2024, 15(10), 1348; https://doi.org/10.3390/genes15101348 - 21 Oct 2024
Viewed by 662
Abstract
Background The growth habit (GH), also named the branching habit, is an important agronomic trait of peanut and mainly determined by the lateral branch angle (LBA). The branching habit is closely related to peanut mechanized farming, pegging, yield, and disease management. Objectives However, [...] Read more.
Background The growth habit (GH), also named the branching habit, is an important agronomic trait of peanut and mainly determined by the lateral branch angle (LBA). The branching habit is closely related to peanut mechanized farming, pegging, yield, and disease management. Objectives However, the molecular basis underlying peanut LBA needs to be uncovered. Methods In the present study, an erect branching peanut mutant, eg06g, was obtained via 60Co γ-ray-radiating mutagenesis of a spreading-type peanut cultivar, Georgia-06G (G06G). RNA-seq was performed to compare the transcriptome variation of the upper sides and lower sides of the lateral branch of eg06g and G06G. Results In total, 4908 differentially expressed genes (DEGs) and 5833 DEGs were identified between eg06g and G06G from the lower sides and upper sides of the lateral branch, respectively. GO, KEGG, and clustering enrichment analysis indicated that the carbohydrate metabolic process, cell wall organization or biogenesis, and plant hormone signal transduction were mainly enriched in eg06g. Conclusions Further analysis showed that the genes involved in starch biosynthesis were upregulated in eg06g, which contributed to amyloplast sedimentation and gravity perception. Auxin homeostasis and transport-related genes were found to be upregulated in eg06g, which altered the redistribution of auxin in eg06g and in turn triggered apoplastic acidification and activated cell wall modification-related enzymes, leading to tiller angle establishment through the promotion of cell elongation at the lower side of the lateral branch. In addition, cytokinin and GA also demonstrated synergistic action to finely regulate the formation of peanut lateral branch angles. Collectively, our findings provide new insights into the molecular regulation of peanut LBA and present genetic materials for breeding peanut cultivars with ideotypes. Full article
(This article belongs to the Special Issue Genetic Breeding and Improvement of Peanut)
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