Genetics of Biotic and Abiotic Stress Response in Plants

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 August 2023) | Viewed by 6129

Special Issue Editor


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Guest Editor
Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
Interests: abiotic stress; bulbous plant, dormancy; hormones; senescence

Special Issue Information

Dear Colleagues,

Biotic and abiotic stresses are great threats to plant growth and development. In order to survive under stresses, plants have evolved complex mechanisms with which to sense external signals in order to respond to environmental changes. Thus far, previous research has deeply revealed some mechanisms of the genetic regulation of plant stress sensing and adaptation. It is known that phytohormone signaling, reactive oxygen species (ROS) homeostasis, as well as transcriptional and post-transcriptional modification play essential roles in resisting biotic and abiotic stresses. Recent applications of high-throughput omics and advanced bioengineering techniques deepen our understanding of the genetic mechanisms of stress responses in plants. Studies on the variation and segregation of population traits, QTL screening, molecular marker development, as well as the identification of gene functions provide further possibilities for us to comprehensively understand the adaptation mechanism of plant species to biotic and/or abiotic stresses.

For this Special Issue, we aim to report the latest advances in genetics research on plants’ responses and adaptations to stresses. Manuscripts related to forward genetics, reverse genetics, and chemical genetic studies are welcome in the form of original research articles or critical reviews.

Dr. Yanping Wang
Guest Editor

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Keywords

  • genetics
  • biotic stress and abiotic stress
  • phytohormones
  • population trait variation
  • molecular marker development
  • transcription
  • transcriptome

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Published Papers (2 papers)

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Research

16 pages, 2131 KiB  
Article
RNAseq-Based Working Model for Transcriptional Regulation of Crosstalk between Simultaneous Abiotic UV-B and Biotic Stresses in Plants
by Zheng Zhou, Alex Windhorst, Dirk Schenke and Daguang Cai
Genes 2023, 14(2), 240; https://doi.org/10.3390/genes14020240 - 17 Jan 2023
Cited by 4 | Viewed by 2623
Abstract
Plants adjust their secondary metabolism by altering the expression of corresponding genes to cope with both abiotic and biotic stresses. In the case of UV-B radiation, plants produce protective flavonoids; however, this reaction is impeded during pattern-triggered immunity (PTI) induced by pathogens. Pathogen [...] Read more.
Plants adjust their secondary metabolism by altering the expression of corresponding genes to cope with both abiotic and biotic stresses. In the case of UV-B radiation, plants produce protective flavonoids; however, this reaction is impeded during pattern-triggered immunity (PTI) induced by pathogens. Pathogen attack can be mimicked by the application of microbial associated molecular patterns (e.g., flg22) to study crosstalk between PTI and UV-B-induced signaling pathways. Switching from Arabidopsis cell cultures to in planta studies, we analyzed whole transcriptome changes to gain a deeper insight into crosstalk regulation. We performed a comparative transcriptomic analysis by RNAseq with four distinct mRNA libraries and identified 10778, 13620, and 11294 genes, which were differentially expressed after flg22, UV-B, and stress co-treatment, respectively. Focusing on genes being either co-regulated with the UV-B inducible marker gene chalcone synthase CHS or the flg22 inducible marker gene FRK1 identified a large set of transcription factors from diverse families, such as MYB, WRKY, or NAC. These data provide a global view of transcriptomic reprogramming during this crosstalk and constitute a valuable dataset for further deciphering the underlying regulatory mechanism(s), which appear to be much more complex than previously anticipated. The possible involvement of MBW complexes in this context is discussed. Full article
(This article belongs to the Special Issue Genetics of Biotic and Abiotic Stress Response in Plants)
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17 pages, 6062 KiB  
Article
The Banana MaWRKY18, MaWRKY45, MaWRKY60 and MaWRKY70 Genes Encode Functional Transcription Factors and Display Differential Expression in Response to Defense Phytohormones
by Sergio García-Laynes, Virginia Aurora Herrera-Valencia, Lilia Guadalupe Tamayo-Torres, Verónica Limones-Briones, Felipe Alonso Barredo-Pool, Fray Martin Baas-Espinola, Angel Gabriel Alpuche-Solís, Carlos Puch-Hau and Santy Peraza-Echeverria
Genes 2022, 13(10), 1891; https://doi.org/10.3390/genes13101891 - 18 Oct 2022
Cited by 10 | Viewed by 2901
Abstract
WRKY transcription factors (TFs) play key roles in plant defense responses through phytohormone signaling pathways. However, their functions in tropical fruit crops, especially in banana, remain largely unknown. Several WRKY genes from the model plants rice (OsWRKY45) and Arabidopsis (AtWRKY18 [...] Read more.
WRKY transcription factors (TFs) play key roles in plant defense responses through phytohormone signaling pathways. However, their functions in tropical fruit crops, especially in banana, remain largely unknown. Several WRKY genes from the model plants rice (OsWRKY45) and Arabidopsis (AtWRKY18, AtWRKY60, AtWRKY70) have shown to be attractive TFs for engineering disease resistance. In this study, we isolated four banana cDNAs (MaWRKY18, MaWRKY45, MaWRKY60, and MaWRKY70) with homology to these rice and ArabidopsisWRKY genes. The MaWRKY cDNAs were isolated from the wild banana Musa acuminata ssp. malaccensis, which is resistant to several diseases of this crop and is a progenitor of most banana cultivars. The deduced amino acid sequences of the four MaWRKY cDNAs revealed the presence of the conserved WRKY domain of ~60 amino acids and a zinc-finger motif at the N-terminus. Based on the number of WRKY repeats and the structure of the zinc-finger motif, MaWRKY18 and MaWRKY60 belong to group II of WRKY TFs, while MaWRKY45 and MaWRKY70 are members of group III. Their corresponding proteins were located in the nuclei of onion epidermal cells and were shown to be functional TFs in yeast cells. Moreover, expression analyses revealed that the majority of these MaWRKY genes were upregulated by salicylic acid (SA) or methyl jasmonate (MeJA) phytohormones, although the expression levels were relatively higher with MeJA treatment. The fact that most of these banana WRKY genes were upregulated by SA or MeJA, which are involved in systemic acquired resistance (SAR) or induced systemic resistance (ISR), respectively, make them interesting candidates for bioengineering broad-spectrum resistance in this crop. Full article
(This article belongs to the Special Issue Genetics of Biotic and Abiotic Stress Response in Plants)
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