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Agronomy
Special Issues
Analysis of Plant Resistance Mechanisms for Crop Breeding
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Analysis of Plant Resistance Mechanisms for Crop Breeding

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Crop Breeding and Genetics".

Deadline for manuscript submissions: closed (30 April 2024) | Viewed by 2866

Special Issue Editors

Dr. Xiaofeng Su

E-Mail Website
Guest Editor
Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
Interests: plant resistant mechanism; fungal pathogenic mechanism; plant/microbe interaction; host-induced gene silencing; RNAi
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Xin Xie

E-Mail Website
Guest Editor
Department of Plant Protection, College of Agriculture Guizhou University, Guizhou, China
Interests: the evolution and molecular mechanism of plant stress resistance

Special Issue Information

Dear Colleagues,

Plant growth is restricted by abiotic and biotic stresses, such as drought, high temperatures, cold, pathogenic bacteria and other adverse factors. Additionally, plants have evolved a wide array of resistant mechanisms. With the explosive development of OMICS technologies, e.g., genomics, transcriptomics, proteomics, and metabolomics, crop improvement is entering on a new era of biological information. In addition, it is important to investigate gene function and regulatory mechanisms via gene editing, overexpression, yeast two-hybrid methods and other molecular means for the purpose of future plant breeding. The combination of omics and molecular methods can help to accelerate the breeding process for stress resistance. Thus, we are launching this Special Issue of Agronomy, entitled “Analysis of Plant Resistance Mechanism for Crop Breeding”.

We aim to collect remarkable studies into:

  • Integration using multi-omics to reveal the complex genetic regulatory networks and hub genes controlling the mechanisms of stress tolerance;
  • Genetic regulatory network and model analysis of abiotic and biotic stress responses;
  • New functional genes or genetic loci identification for stresses tolerance.

Dr. Xiaofeng Su
Prof. Dr. Xin Xie
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. Agronomy 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

  • plant
  • stress resistance
  • molecular mechanism
  • breeding

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Published Papers (3 papers)

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Research

15 pages, 7133 KiB  
Article
Histological and Molecular Characterization of the Musa spp. x Pseudocercospora musae Pathosystem
by Paulo Henrique da Silva, Israel Lopes da Cunha Neto, Rogério Mercês Ferreira Santos, Fabiano Machado Martins, Julianna Matos da Silva Soares, Fernanda dos Santos Nascimento, Andresa Priscila de Souza Ramos, Edson Perito Amorim, Cláudia Fortes Ferreira and Carlos Alberto da Silva Ledo
Agronomy 2024, 14(10), 2328; https://doi.org/10.3390/agronomy14102328 - 10 Oct 2024
Viewed by 492
Abstract
Yellow Sigatoka, caused by the fungus Pseudocercospora musae, represents one of the most challenging diseases in bananas, which is aggravated due to the genetic variability of this pathogen. The main objective of this study was to characterize the infection process of P. [...] Read more.
Yellow Sigatoka, caused by the fungus Pseudocercospora musae, represents one of the most challenging diseases in bananas, which is aggravated due to the genetic variability of this pathogen. The main objective of this study was to characterize the infection process of P. musae in two banana cultivars with different levels of resistance and to quantify the expression of resistance genes. Inoculated and non-inoculated leaf samples of the two cultivars, Yangambi km 5—resistant and Grande Naine—susceptible, were investigated by light microscopy, histochemistry, scanning electron microscopy, and RT-qPCR. The cultivar Grande Naine showed early signs of P. musae infection, including the production of lipophilic substances and phenolic compounds, while the cultivar Yangambi km 5 was not affected. In the Grande Naine cultivar, the protein kinase gene was upregulated, while in the Yangambi km 5, it was repressed. The WAK2 gene was initially upregulated in both cultivars; however, in Grande Naine, it was subsequently repressed, while in Yangambi km 5, it remained downregulated. These findings have the potential to contribute to more effective management strategies in the control of yellow Sigatoka and the development of banana varieties resistant to yellow Sigatoka. Full article
(This article belongs to the Special Issue Analysis of Plant Resistance Mechanisms for Crop Breeding)
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12 pages, 2697 KiB  
Article
ZmD11 Gene Regulates Tobacco Plant Floral Development under Drought Stress
by Zhanfeng Li, Fuchao Jiao, Zhiyi Sun, Enying Zhang, Xiyun Song, Yuhe Pei, Jun Li, Nicola Cannon, Xianmin Chang and Xinmei Guo
Agronomy 2024, 14(7), 1381; https://doi.org/10.3390/agronomy14071381 - 27 Jun 2024
Viewed by 582
Abstract
Maize is most sensitive to drought stress at the floral stage by reducing tassel and silk quality, and thus improving drought tolerance at this stage may help preserve yield. It has been reported that BRs (brassinosteroids) promote floral development under drought stress. However, [...] Read more.
Maize is most sensitive to drought stress at the floral stage by reducing tassel and silk quality, and thus improving drought tolerance at this stage may help preserve yield. It has been reported that BRs (brassinosteroids) promote floral development under drought stress. However, the function of the brassinosteroid biosynthesis gene ZmDWARF11 (ZmD11) on floral growth under drought stress has not been elucidated. This study found that under normal growth conditions, the heterologous over-expression of ZmD11 significantly enhanced both the vegetative growth and floral development of tobacco. Under drought stress, overexpressing ZmD11 reduced stress-induced tobacco flower size reduction, while it did not affect vegetative growth. After drought treatment, the activities of protective enzymes, including CAT (Catalase), SOD (Superoxide Dismutase), and POD (Peroxidase), were higher, while the content of MDA (Malondialdehyde) was lower in ZmD11 over-expression tobacco lines than that in the wild type control. The relative expression of dehydrin-related genes NtLeat5 and NtERD10 was increased in ZmD11 over-expression tobacco lines compared to that in the control. In summary, we reported that ZmD11 plays a role in tobacco floral development under drought stress. Our data are valuable in understanding the functions of BRs in regulating plant floral development under drought stress. Full article
(This article belongs to the Special Issue Analysis of Plant Resistance Mechanisms for Crop Breeding)
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20 pages, 13222 KiB  
Article
Transcriptome Analysis and Genome-Wide Gene Family Identification Enhance Insights into Bacterial Wilt Resistance in Tobacco
by Zhengwen Liu, Zhiliang Xiao, Ruimei Geng, Min Ren, Xiuming Wu, He Xie, Ge Bai, Huifen Zhang, Dan Liu, Caihong Jiang, Lirui Cheng and Aiguo Yang
Agronomy 2024, 14(2), 250; https://doi.org/10.3390/agronomy14020250 - 24 Jan 2024
Cited by 1 | Viewed by 1340
Abstract
Bacterial wilt, caused by the Ralstonia solanacearum species complex, is one of the most damaging bacterial diseases in tobacco and other Solanaceae crops. In this study, we conducted an analysis and comparison of transcriptome landscape changes in seedling roots of three tobacco BC [...] Read more.
Bacterial wilt, caused by the Ralstonia solanacearum species complex, is one of the most damaging bacterial diseases in tobacco and other Solanaceae crops. In this study, we conducted an analysis and comparison of transcriptome landscape changes in seedling roots of three tobacco BC4F5 lines, C244, C010, and C035, with different resistance to bacterial wilt at 3, 9, 24, and 48 h after R. solanacearum infection. A number of biological processes were highlighted for their differential enrichment between C244, C010, and C035, especially those associated with cell wall development, protein quality control, and stress response. Hence, we performed a genome-wide identification of seven cell wall development-related gene families and six heat shock protein (Hsp) families and proposed that genes induced by R. solanacearum and showing distinct expression patterns in C244, C010, and C035 could serve as a potential gene resource for enhancing bacterial wilt resistance. Additionally, a comparative transcriptome analysis of R. solanacearum-inoculated root samples from C244 and C035, as well as C010 and C035, resulted in the identification of a further 33 candidate genes, of which Nitab4.5_0007488g0040, a member of the pathogenesis-related protein 1 (PR-1) family, was found to positively regulate bacterial wilt resistance, supported by real-time quantitative PCR (qRT-PCR) and virus-induced gene silencing (VIGS) assays. Our results contribute to a better understanding of molecular mechanisms underlying bacterial wilt resistance and provide novel alternative genes for resistance improvement. Full article
(This article belongs to the Special Issue Analysis of Plant Resistance Mechanisms for Crop Breeding)
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