Metabolomic and Transcriptomic Response of Plants to Beneficial Microbes

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Farming Sustainability".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 5496

Special Issue Editors


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Guest Editor
Microbiology and Genetics Department, University of Salamanca, 37007 Salamanca, Spain
Interests: host-microbe interactions; bioinformatics; microbiology; multi-OMICs; microbialecology
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Special Issue Information

Dear Colleague,

The field of plant–microbe interactions has been the focus of extensive research for decades, leading to discoveries that allow the use of beneficial microbes as plant probiotics and as biocontrol agents. Despite this, many of the positive responses of the plant to these microorganisms remain undescribed. Now, the emergence and development of metabolomic and transcriptomic (RNA-Seq) methodologies enables us to almost fully understand these responses. Here, we present a new Special Issue (SI) for Agronomy, entitled “Metabolomic and Transcriptomic Response of Plants to Beneficial Microbes”. With this SI, we aim to gather knowledge regarding the molecular mechanisms triggered in those interactions involving plants and beneficial microbes. The transcriptomic and metabolomic information obtained from plant–microbe interaction will provide new insights to develop strategies to improve crop productivity and resilience to biotic and abiotic stresses. We welcome articles in which metabolomic and RNA-Seq analyses try to unveil these mechanisms. Understanding plant–microbe interactions will surely enhance the translation of research outputs into a more sustainable agriculture.

Dr. José David Flores-Félix
Dr. Zaki Saati-Santamaría
Guest Editors

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Keywords

  • plant–microbe interactions
  • transcriptomics
  • metabolomics
  • microbial ecology
  • bioinformatics
  • sustainable agriculture
  • biofertilizer
  • biocontrol

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Published Papers (2 papers)

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Research

15 pages, 1286 KiB  
Article
Characterization of Leaf Transcriptome of Grafted Tomato Seedlings after Rhizospheric Inoculation with Azospirillum baldaniorum or Paraburkholderia graminis
by Federica Caradonia, Matteo Buti, Alessia Flore, Roberto Gatti, Caterina Morcia, Valeria Terzi, Domenico Ronga, Lionel Moulin, Enrico Francia and Justyna Anna Milc
Agronomy 2022, 12(10), 2537; https://doi.org/10.3390/agronomy12102537 - 17 Oct 2022
Cited by 3 | Viewed by 2203
Abstract
Inoculation with plant growth promoting rhizobacteria (PGPR) might be a sustainable practice to increase nutrients use efficiency of crops. In order to elucidate the mechanisms underlying the beneficial interaction, an RNA-Seq transcriptional profiling of tomato leaves was performed after roots’ inoculation with Azospirillum [...] Read more.
Inoculation with plant growth promoting rhizobacteria (PGPR) might be a sustainable practice to increase nutrients use efficiency of crops. In order to elucidate the mechanisms underlying the beneficial interaction, an RNA-Seq transcriptional profiling of tomato leaves was performed after roots’ inoculation with Azospirillum baldaniorum (AB) or Paraburkholderia graminis (PG). Overall, 427 and 512 differentially expressed tomato genes were retrieved for AB and PB inoculation, respectively, and in both cases, the number of up-regulated genes exceeded the number of those down-regulated. Expression profiles suggest that the interactions between tomato seedlings and microorganisms are species-specific. The common activated pathways involved genes coding for proteins related to water and nutrients uptake, defense responses to biotic and abiotic stresses and hormonal regulation of fruit-set and ripening. While AB induced genes coding for MYB transcription factors known to be involved in response to biotic and abiotic stresses, PG upregulated 5 genes coding for putative late blight resistance protein homolog. Auxin responsive molecules and gibberellins involved in the fruit-set and early fruit growth in tomato were mainly induced by AB correlating to higher fruit number obtained in a previous field study. On the other hand, ERF transcription factors involved in ripening were induced mainly by PG treatment. Full article
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16 pages, 4602 KiB  
Article
Evaluation of Bacillus velezensis Biocontrol Potential against Fusarium Fungi on Winter Wheat
by Anzhela Mikhailovna Asaturova, Natalya Andreevna Zhevnova, Natalia Sergeevna Tomashevich, Tatiana Mikhailovna Sidorova, Anna Igorevna Homyak, Valentina Mikhailovna Dubyaga, Vladimir Dmitrievich Nadykta, Artem Pavlovich Zharikov, Yuri Irodionovich Kostyukevich and Boris Sergeevich Tupertsev
Agronomy 2022, 12(8), 1956; https://doi.org/10.3390/agronomy12081956 - 19 Aug 2022
Cited by 5 | Viewed by 2630
Abstract
Fungi of the genus Fusarium are economically significant pathogens in most wheat-growing regions worldwide. The biocontrol agents Bacillus velezensis BZR 336 g and BZR 517 were tested for growth inhibition of F. graminearum BZR 4. The results demonstrated that the strains are capable [...] Read more.
Fungi of the genus Fusarium are economically significant pathogens in most wheat-growing regions worldwide. The biocontrol agents Bacillus velezensis BZR 336 g and BZR 517 were tested for growth inhibition of F. graminearum BZR 4. The results demonstrated that the strains are capable of deforming and destroying hyphae. The modified bioautography technique showed that the strains produce iturin A and surfactin, which probably explains the mechanism of pathogen inhibition. Furthermore, lipopeptides were detected and identified in two samples by the HPLC-HRMS. Compounds such as surfactin and their isomers and homologues were found in both samples. An experiment on an artificial infectious background in a climatic chamber established that the biological effectiveness of strains is close to that of chemical and biological references. Cultivation of plants with B. velezensis showed that the strains are likely to reduce the stress load. An efficacy of up to 45.0% was determined for bioagents BZR 336 g and BZR 517 in field trials, while the yield was up to 7.9 t/ha. The use of B. velezensis BZR 336 g and BZR 517 as biocontrol agents provides an environmentally friendly approach to the control of Fusarium rots on wheat, reduction of the pesticide load, and hence quality harvest. Full article
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