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Advances in Research for Wheat Molecular Breeding and Genetics
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Advances in Research for Wheat Molecular Breeding and Genetics

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".

Deadline for manuscript submissions: closed (31 October 2023) | Viewed by 3480

Special Issue Editors

Dr. Fahimeh Shahinnia

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Guest Editor
Research Scientist, Bavarian State Research Centre for Agriculture, Institute for Crop Science and Plant Breeding, 85354 Freising, Germany
Interests: QTL mapping; genome-wide association mapping; disease resistance and abiotic stress tolerance; wheat; barley; plant genetics; molecular breeding
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Jian Ma

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Guest Editor
State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China
Interests: wheat molecular genetics and genomics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues, 

Wheat (Triticum aestivum L.) is a gramineous plant and one of the three most important cereal crops. Molecular breeding is based on conventional breeding combined with biotechnology to make appropriate interventions at the molecular level in the genome and gene sequence of plant varieties with the aim of improving crop productivity. This breeding method, combining biotechnological tools and genetic improvement technologies, is now receiving more attention due to the accessibility of the reference genome of wheat. In practice, breeders are applying molecular breeding methods as a technical extension to improve the selection and combination of favorable traits, reduce the difficulty of breeding, and breed wheat varieties with better integration of agronomic traits. Continuous improvement of wheat varieties is an important task for wheat researchers via genetically transferring excellent traits to other varieties to maintain quality and quantity of production. This special issue of IJMS accepts reviews and research articles that address interdisciplinary approaches for improving wheat productivity through advanced research in molecular breeding and genetics.

Dr. Fahimeh Shahinnia
Prof. Dr. Jian Ma
Guest Editors

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. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. 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

  • gene and QTL cloning
  • GWAS and QTL mapping
  • genetic engineering
  • genome sequencing
  • marker-assisted breeding
  • disease resistance
  • stress tolerance
  • quality traits improvement

Published Papers (3 papers)

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Research

13 pages, 2378 KiB  
Article
Identification and Validation of a Stable Major-Effect Quantitative Trait Locus for Kernel Number per Spike on Chromosome 2D in Wheat (Triticum aestivum L.)
by Zhi Li, Qinyi Luo, Yawen Deng, Ke Du, Xinli Li and Tianheng Ren
Int. J. Mol. Sci. 2023, 24(18), 14289; https://doi.org/10.3390/ijms241814289 - 19 Sep 2023
Cited by 1 | Viewed by 712
Abstract
A recombinant inbred line population including 371 lines was developed by a high kernel number per spike (KNPS) genotype T1208 and a low KNPS genotype Chuannong18 (CN18). A genetic linkage map consisting of 11,583 markers was constructed by the Wheat55K SNP Array. The [...] Read more.
A recombinant inbred line population including 371 lines was developed by a high kernel number per spike (KNPS) genotype T1208 and a low KNPS genotype Chuannong18 (CN18). A genetic linkage map consisting of 11,583 markers was constructed by the Wheat55K SNP Array. The quantitative trait loci (QTLs) related to KNPS were detected in three years. Eight, twenty-seven, and four QTLs were identified using the ICIM-BIP, ICIM-MET, and ICIM-EPI methods, respectively. One QTL, QKnps.sau-2D.1, which was mapped on chromosome 2D, can explain 18.10% of the phenotypic variation (PVE) on average and be considered a major and stable QTL for KNPS. This QTL was located in a 0.89 Mb interval on chromosome 2D and flanked by the markers AX-109283238 and AX-111606890. Moreover, KASP-AX-111462389, a Kompetitive Allele-Specific PCR (KASP) marker which closely linked to QKnps.sau-2D.1, was designed. The genetic effect of QKnps.sau-2D.1 on KNPS was successfully confirmed in two RIL populations. The results also showed that the significant increase of KNPS and 1000-kernel weight (TKW) was caused by QKnps.sau-2D.1 overcoming the disadvantage due to the decrease of spike number (SN) and finally lead to a significant increase of grain yield. In addition, within the interval in which QKnps.sau-2D.1 is located in Chinese Spring reference genomes, only fifteen genes were found, and two genes that might associate with KNPS were identified. QKnps.sau-2D.1 may provide a new resource for the high-yield breeding of wheat in the future. Full article
(This article belongs to the Special Issue Advances in Research for Wheat Molecular Breeding and Genetics)
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16 pages, 3373 KiB  
Article
Genome-Wide Analysis of the Amino Acid Permeases Gene Family in Wheat and TaAAP1 Enhanced Salt Tolerance by Accumulating Ethylene
by Kai Wang, Mingjuan Zhai, Dezhou Cui, Ran Han, Xiaolu Wang, Wenjing Xu, Guang Qi, Xiaoxue Zeng, Yamei Zhuang and Cheng Liu
Int. J. Mol. Sci. 2023, 24(18), 13800; https://doi.org/10.3390/ijms241813800 - 07 Sep 2023
Viewed by 784
Abstract
Amino acid permeases (AAPs) are proteins of the integral membrane that play important roles in plant growth, development, and responses to various stresses. The molecular functions of several AAPs were characterized in Arabidopsis and rice, but there is still limited information on wheat. [...] Read more.
Amino acid permeases (AAPs) are proteins of the integral membrane that play important roles in plant growth, development, and responses to various stresses. The molecular functions of several AAPs were characterized in Arabidopsis and rice, but there is still limited information on wheat. Here, we identified 51 AAP genes (TaAAPs) in the wheat genome, classified into six groups based on phylogenetic and protein structures. The chromosome location and gene duplication analysis showed that gene duplication events played a crucial role in the expansion of the TaAAPs gene family. Collinearity relationship analysis revealed several orthologous AAPs between wheat and other species. Moreover, cis-element analysis of promoter regions and transcriptome data suggested that the TaAAPs can respond to salt stress. A TaAAP1 gene was selected and transformed in wheat. Overexpressing TaAAP1 enhanced salt tolerance by increasing the expression of ethylene synthesis genes (TaACS6/TaACS7/TaACS8) and accumulating more ethylene. The present study provides an overview of the AAP family in the wheat genome as well as information on systematics, phylogenetics, and gene duplication, and shows that overexpressing TaAAP1 enhances salt tolerance by regulating ethylene production. These results serve as a theoretical foundation for further functional studies on TaAAPs in the future. Full article
(This article belongs to the Special Issue Advances in Research for Wheat Molecular Breeding and Genetics)
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21 pages, 12588 KiB  
Article
Genome-Wide Analysis and Identification of 1-Aminocyclopropane-1-Carboxylate Synthase (ACS) Gene Family in Wheat (Triticum aestivum L.)
by Shuqing Liu, Chao Lei, Zhanhua Zhu, Mingzhen Li, Zhaopeng Chen, Wei He, Bin Liu, Liuping Chen, Xuejun Li and Yanzhou Xie
Int. J. Mol. Sci. 2023, 24(13), 11158; https://doi.org/10.3390/ijms241311158 - 06 Jul 2023
Cited by 4 | Viewed by 1273
Abstract
Ethylene has an important role in regulating plant growth and development as well as responding to adversity stresses. The 1-aminocyclopropane-1-carboxylate synthase (ACS) is the rate-limiting enzyme for ethylene biosynthesis. However, the role of the ACS gene family in wheat has not been examined. [...] Read more.
Ethylene has an important role in regulating plant growth and development as well as responding to adversity stresses. The 1-aminocyclopropane-1-carboxylate synthase (ACS) is the rate-limiting enzyme for ethylene biosynthesis. However, the role of the ACS gene family in wheat has not been examined. In this study, we identified 12 ACS members in wheat. According to their position on the chromosome, we named them TaACS1-TaACS12, which were divided into four subfamilies, and members of the same subfamilies had similar gene structures and protein-conserved motifs. Evolutionary analysis showed that fragment replication was the main reason for the expansion of the TaACS gene family. The spatiotemporal expression specificity showed that most of the members had the highest expression in roots, and all ACS genes contained W box elements that were related to root development, which suggested that the ACS gene family might play an important role in root development. The results of the gene expression profile analysis under stress showed that ACS members could respond to a variety of stresses. Protein interaction prediction showed that there were four types of proteins that could interact with TaACS. We also obtained the targeting relationship between TaACS family members and miRNA. These results provided valuable information for determining the function of the wheat ACS gene, especially under stress. Full article
(This article belongs to the Special Issue Advances in Research for Wheat Molecular Breeding and Genetics)
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