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Agronomy
Special Issues
Molecular and Genetic Mechanisms of Plant Disease Resistance
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Molecular and Genetic Mechanisms of Plant Disease Resistance

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Agricultural Biosystem and Biological Engineering".

Deadline for manuscript submissions: closed (31 January 2023) | Viewed by 5989

Special Issue Editors

Dr. Baohong Zou

E-Mail Website
Guest Editor
The State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
Interests: molecular and genetic mechanisms of plant disease resistance
Prof. Dr. Zemin Zhang

E-Mail Website
Guest Editor
State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, China
Interests: rice genetic breeding

Special Issue Information

Dear Colleagues, 

Plant disease poses a great challenge for agriculture. In order to minimize the negative impacts of disease on growth repression and yields reduction, plants undergo physiological and biochemical adjustments. Studying how plants respond and adapt to disease is of great importance, not only for fundamental understanding of disease resistance but also to help generate disease-resistant crops. Foundational discoveries made in plant disease resistance response will eventually guide the development of crops that are resistant to disease. We welcome submissions of original research papers, reviews, and methods, including (but not limited to) research on the following sub-themes:

  1. The molecular, physiological and genetic basis of disease resistance in plants.
  2. The crosstalk between disease resistance and other biotic/abiotic stresses.
  3. The discovery of novel disease-resistance pathways and genes.
  4. The methods to enhance disease resistance of plant.
  5. The molecular and functional genomic approaches for disease resistance crops selection and breeding.

Dr. Baohong Zou
Prof. Dr. Zemin Zhang
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

  • pathogen
  • disease resistance
  • R gene
  • immunity
  • defense response

Published Papers (3 papers)

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Research

14 pages, 4063 KiB  
Article
Divergent Roles of CNGC2 and CNGC4 in the Regulation of Disease Resistance, Plant Growth and Heat Tolerance in Arabidopsis
by Shan Lu, Tianquan Zhu, Lilin Luo, Nana Ouyang, Jian Hua and Baohong Zou
Agronomy 2022, 12(9), 2176; https://0-doi-org.brum.beds.ac.uk/10.3390/agronomy12092176 - 13 Sep 2022
Cited by 2 | Viewed by 1681
Abstract
Arabidopsis cyclic nucleotide-gated channels (CNGC) 2 and 4 are shown to negatively regulate disease resistance and heat tolerance and to positively regulate plant growth. Whether or not their functions in these processes are interdependent is largely unknown. Here, using the mutation of phytoalexin [...] Read more.
Arabidopsis cyclic nucleotide-gated channels (CNGC) 2 and 4 are shown to negatively regulate disease resistance and heat tolerance and to positively regulate plant growth. Whether or not their functions in these processes are interdependent is largely unknown. Here, using the mutation of phytoalexin deficient 4 (PAD4) to inhibit the enhanced defense response and programmed cell death (PCD), we assessed the contribution of the altered defense response to the heat tolerance and plant growth in the cngc2 and cngc4 single and double mutants. The pad4 mutation reverted the enhanced disease resistance of the cngc2 and cngc4 mutants at the normal temperature (22 °C) but not at the elevated temperature (28 °C). The pad4 mutation slightly alleviated the dwarfism of the cngc2 and cngc4 mutants at 22 °C but not at 28 °C, indicating a small contribution from the defense response to plant growth regulation. The pad4 mutation also reduced the enhanced heat tolerance in the cngc mutants, suggesting an involvement of PCD in heat tolerance. In addition, a higher heat tolerance was correlated with more opened stomata under heat treatment among the wild type and mutants of the PAD4, CNGC2 and CNGC4 genes. In sum, this study suggests that the regulation of heat tolerance and plant growth by CNGC2 and CNGC4 is almost independent of their regulation of disease resistance. It also reveals a PAD4-dependent role of CNGC2 and CNGC4 in stomatal aperture regulation and heat tolerance. Full article
(This article belongs to the Special Issue Molecular and Genetic Mechanisms of Plant Disease Resistance)
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16 pages, 2452 KiB  
Article
Development of Broad Spectrum and Durable Bacterial Blight Resistant Variety through Pyramiding of Four Resistance Genes in Rice
by Kartik Chandra Pradhan, Elssa Pandit, Shakti Prakash Mohanty, Arpita Moharana, Priyadarsini Sanghamitra, Jitendriya Meher, Binod Kumar Jena, Prasanta K. Dash, Lambodar Behera, Pavitra Mohan Mohapatra, Debendra Nath Bastia and Sharat Kumar Pradhan
Agronomy 2022, 12(8), 1903; https://0-doi-org.brum.beds.ac.uk/10.3390/agronomy12081903 - 14 Aug 2022
Cited by 9 | Viewed by 2067
Abstract
Bacterial blight (BB) disease caused by Xanthomonas oryzae pv. oryzae is a major biotic constraint on obtaining higher grain yields in rice. Marker-assisted backcross breeding (MABB) was performed by the pyramiding of Xa4, xa5, xa13 and Xa21 resistance genes in the [...] Read more.
Bacterial blight (BB) disease caused by Xanthomonas oryzae pv. oryzae is a major biotic constraint on obtaining higher grain yields in rice. Marker-assisted backcross breeding (MABB) was performed by the pyramiding of Xa4, xa5, xa13 and Xa21 resistance genes in the popular variety, Ranidhan. A foreground selection in BC1F1, BC2F1, and BC3F1 progenies detected all the target genes in 12, 7 and 16 progenies by using the closely linked markers from a population size of 446, 410, and 530, respectively. The BB-positive progenies carrying the target genes with a maximal similarity to the recipient parent was backcrossed in each backcross generation. A total of 1784 BC3F2 seeds were obtained from the best BC3F1 progeny. The screening of the BC3F2 progenies for the four target genes resulted in eight plants carrying all the four target genes. A bioassay of the pyramided lines conferred very high levels of resistance to the predominant isolates of bacterial blight disease. In addition, these pyramided lines were similar to Ranidhan in 16 morpho-quality traits, namely, plant height, filled grains/panicle, panicles/plant, grain length, grain breadth, grain weight, milling, head rice recovery, kernel length after cooking, water uptake, the volume expansion ratio, gel consistency, alkali-spreading value, and the amylose content. Full article
(This article belongs to the Special Issue Molecular and Genetic Mechanisms of Plant Disease Resistance)
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14 pages, 2155 KiB  
Article
Elicitor Induced JA-Signaling Genes Are Associated with Partial Tolerance to Hemibiotrophic Pathogen Phytophthora capsici in Capsicum chinense
by Aarón Barraza, Rosalia Núñez-Pastrana, Abraham Loera-Muro, Thelma Castellanos, Carlos Julián Aguilar-Martínez, Isaac Salvador Sánchez-Sotelo and María Goretty Caamal-Chan
Agronomy 2022, 12(7), 1637; https://0-doi-org.brum.beds.ac.uk/10.3390/agronomy12071637 - 08 Jul 2022
Cited by 1 | Viewed by 1728
Abstract
Phytophthora capsici causes root and stem rot disease in Capsicum. However, molecular mechanisms underlying this pathosystem are little known. The use of elicitors as tools that trigger defense responses to biotic stresses to study molecular plant defense has increased. In this study, early [...] Read more.
Phytophthora capsici causes root and stem rot disease in Capsicum. However, molecular mechanisms underlying this pathosystem are little known. The use of elicitors as tools that trigger defense responses to biotic stresses to study molecular plant defense has increased. In this study, early defense induced in the susceptible cultivar C. chinense using three elicitors to assess its role during interaction with hemibiotrophic P. capsici. The response to infection by phenotypic analyses across the time during disease development in seedlings treated with elicitors was compared. Likewise; defense-gene expression were investigated by qRT-PCR. A total of five resistance genes were used as markers of signaling pathways mediated by jasmonate/ethylene (JA/ET) and salicylic acid (SA). Further, six R genes analogs (CcRGAS) related to oomycete-defense were employed. The results showed that elicitors MeJA and b-aminobutyric acid (BABA) slightly reduced disease symptoms. Moreover, MeJA or BABA treatments followed by challenge with P. capsici up-regulated the expression level of genes related to the JA/ET signaling pathway (CcLOX2, CcPDF1 and CcETR1). Furthermore, MeJA treatment followed by challenge triggered a significant induction of de CcRGAS and CcRPP13 expression within 24 h of inoculation. This suggests that in the early defense mechanisms against P. capsici JA signaling plays an important role. Full article
(This article belongs to the Special Issue Molecular and Genetic Mechanisms of Plant Disease Resistance)
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