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Nutrients and Disease Resistance in Plants
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Nutrients and Disease Resistance in Plants

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 2020) | Viewed by 8475

Special Issue Editor

Dr. Haruhiko Inoue

E-Mail Website
Guest Editor
National Institute of Agrobiological Sciences (NIAS), Tsukuba, Japan
Interests: plant–microbe interactions; plant nutrition; plant protection; microbiome

Special Issue Information

Dear Colleagues，

Plants are the source of life for all living things. They provide 80% of human food and are thus indispensable for food production and the preservation of environmental sustainability. To maintain food security and conserve the environment, it is important to protect plants from environmental stress.

Mineral stress, an abiotic stress caused by factors such as insufficient nutrients and excessive levels of harmful elements, has reduced soil productivity to the extent that problem soils now account for approximately 70% of the world’s agricultural land. Biotic stress, such as that caused by pathogenic microorganisms that infect plants, can inflict significant damage. Plant growth is based on interactions with various microorganisms that have pathogenic and beneficial effects. Producing plants that are resistant to biotic and abiotic stress and ensuring adequate yields is indispensable for humans.

The purpose of this Special Issue is to explore the molecular basis for the sustainable resistance of plants to biotic or abiotic stress. Submissions focusing on a wide range of aspects related to this theme, including plant nutrition, stress tolerance, disease resistance, and plant growth promotion, are all welcome. Studies using microbiome, natural variation, mutants, and omics analysis, such as transcriptomics, epigenetics, and metabolomics, would also be greatly appreciated.

Dr. Haruhiko Inoue
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. 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

  • plant nutrients
  • plant molecular biology
  • plant physiology
  • plant pathology
  • omics database
  • plant and microbe interactions

Published Papers (3 papers)

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Research

18 pages, 4023 KiB  
Article
Redox-Dependent Structural Modification of Nucleoredoxin Triggers Defense Responses against Alternaria brassicicola in Arabidopsis
by Chang Ho Kang, Joung Hun Park, Eun Seon Lee, Seol Ki Paeng, Ho Byoung Chae, Jong Chan Hong and Sang Yeol Lee
Int. J. Mol. Sci. 2020, 21(23), 9196; https://doi.org/10.3390/ijms21239196 - 2 Dec 2020
Cited by 7 | Viewed by 2189
Abstract
In plants, thioredoxin (TRX) family proteins participate in various biological processes by regulating the oxidative stress response. However, their role in phytohormone signaling remains largely unknown. In this study, we investigated the functions of TRX proteins in Arabidopsis thaliana. Quantitative polymerase chain [...] Read more.
In plants, thioredoxin (TRX) family proteins participate in various biological processes by regulating the oxidative stress response. However, their role in phytohormone signaling remains largely unknown. In this study, we investigated the functions of TRX proteins in Arabidopsis thaliana. Quantitative polymerase chain reaction (qPCR) experiments revealed that the expression of ARABIDOPSIS NUCLEOREDOXIN 1 (AtNRX1) is specifically induced by the application of jasmonic acid (JA) and upon inoculation with a necrotrophic fungal pathogen, Alternaria brassicicola. The AtNRX1 protein usually exists as a low molecular weight (LMW) monomer and functions as a reductase, but under oxidative stress AtNRX1 transforms into polymeric forms. However, the AtNRX1M3 mutant protein, harboring four cysteine-to-serine substitutions in the TRX domain, did not show structural modification under oxidative stress. The Arabidopsisatnrx1 null mutant showed greater resistance to A. brassicicola than wild-type plants. In addition, plants overexpressing both AtNRX1 and AtNRX1M3 were susceptible to A. brassicicola infection. Together, these findings suggest that AtNRX1 normally suppresses the expression of defense-responsive genes, as if it were a safety pin, but functions as a molecular sensor through its redox-dependent structural modification to induce disease resistance in plants. Full article
(This article belongs to the Special Issue Nutrients and Disease Resistance in Plants)
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8 pages, 1470 KiB  
Communication
Overexpressed BSR1-Mediated Enhancement of Disease Resistance Depends on the MAMP-Recognition System
by Yasukazu Kanda, Yoko Nishizawa, Takashi Kamakura and Masaki Mori
Int. J. Mol. Sci. 2020, 21(15), 5397; https://doi.org/10.3390/ijms21155397 - 29 Jul 2020
Cited by 4 | Viewed by 2116
Abstract
Plant plasma membrane-localized receptors recognize microbe-associated molecular patterns (MAMPs) and activate immune responses via various signaling pathways. Receptor-like cytoplasmic kinases (RLCKs) are considered key signaling factors in plant immunity. BROAD-SPECTRUM RESISTANCE 1 (BSR1), a rice RLCK, plays a significant role in disease resistance. [...] Read more.
Plant plasma membrane-localized receptors recognize microbe-associated molecular patterns (MAMPs) and activate immune responses via various signaling pathways. Receptor-like cytoplasmic kinases (RLCKs) are considered key signaling factors in plant immunity. BROAD-SPECTRUM RESISTANCE 1 (BSR1), a rice RLCK, plays a significant role in disease resistance. Overexpression of BSR1 confers strong resistance against fungal and bacterial pathogens. Our recent study revealed that MAMP-triggered immune responses are mediated by BSR1 in wild-type rice and are hyperactivated in BSR1-overexpressing rice. It was suggested that hyperactivated immune responses were responsible for the enhancement of broad-spectrum disease resistance; however, this remained to be experimentally validated. In this study, we verified the above hypothesis by disrupting the MAMP-recognition system in BSR1-overexpressing rice. To this end, we knocked out OsCERK1, which encodes a well-characterized MAMP-receptor-like protein kinase. In the background of BSR1 overaccumulation, the knockout of OsCERK1 nearly abolished the enhancement of blast resistance. This finding indicates that overexpressed BSR1-mediated enhancement of disease resistance depends on the MAMP-triggered immune system, corroborating our previously suggested model. Full article
(This article belongs to the Special Issue Nutrients and Disease Resistance in Plants)
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13 pages, 3301 KiB  
Article
Fe2+ Ions Alleviate the Symptom of Citrus Greening Disease
by Haruhiko Inoue, Sakiko Yamashita-Muraki, Kanako Fujiwara, Kayoko Honda, Hiroki Ono, Takamasa Nonaka, Yuichi Kato, Tomoya Matsuyama, Shoji Sugano, Motofumi Suzuki and Yoshikuni Masaoka
Int. J. Mol. Sci. 2020, 21(11), 4033; https://doi.org/10.3390/ijms21114033 - 4 Jun 2020
Cited by 14 | Viewed by 3753
Abstract
Citrus greening (CG) is among the most devastating citrus diseases worldwide. CG-infected trees exhibit interveinal chlorotic leaves due to iron (Fe) deficiency derived from CG; thus, Fe content is lower in infected leaves than in healthy leaves. In this study, we demonstrated that [...] Read more.
Citrus greening (CG) is among the most devastating citrus diseases worldwide. CG-infected trees exhibit interveinal chlorotic leaves due to iron (Fe) deficiency derived from CG; thus, Fe content is lower in infected leaves than in healthy leaves. In this study, we demonstrated that the foliar application of Fe2+ relieves the symptom of CG infection in citrus trees. We applied Fe2+ and citrate to the leaves of infected rough lemon plants. Following this treatment, a reduction in the number of yellow symptomatic leaves was observed, and their growth was restored. Using chlorophyll content as an index, we screened for effective Fe complexes and found that a high ratio of citrate to Fe2+ in the applied solution led to effects against CG in Shikuwasa trees. A high proportion of Fe2+ to total Fe was another key factor explaining the effectiveness of the solution in CG infection, indicating the importance of Fe2+ absorption into plant cells. We confirmed the proportion of Fe2+ to total Fe through the high correlation of reflectometry data via a triazine reaction and X-ray absorption fine structure analysis. These results demonstrate that the foliar application of a high-Fe2+ citrate solution can restore the growth of CG diseased trees. Full article
(This article belongs to the Special Issue Nutrients and Disease Resistance in Plants)
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