Special Issue "Potential of Bacterial Endophytes as Crop Growth Promoting Factors"

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

Deadline for manuscript submissions: 1 December 2020.

Special Issue Editors

Prof. Encarna Velazquez
Guest Editor
Microbiología y Genética, University of Salamanca, Spain
Interests: endophytic bacteria;rhizobia;bacterial diversity;plant-microbe interactions; bacterial plant probiotics
Prof. Fernando González-Andrés
Guest Editor
Institute of Environment, Natural Resources and Biodiversity, Universidad de León, Spain
Interests: agronomy of microbial plant biostimulants; formulation of microbial plant biostimulants
Dr. José David Flores-Félix
Guest Editor
Department of Microbiology and Genetics,Universidad de Salamanca,Spain
Interests: endophytic bacteria;plant biostimulants; plant-microbe interactions;plant-associated bacterial populations; biological nitrogen fixation
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colleagues,

Microbial endophytes comprise a wide range of bacteria inhabiting the inner tissues of plants which can enhance the plant growth. Within these bacteria, those living inside the nodules of legumes and the roots of every plant are of particular interest, as they are promising crop-growth-promoting factors. Nevertheless, most works to date have focused on basic scientific aspects of plant-growth-promoting microorganisms, and those dealing with their agronomic performance are still scarce. Moreover, in most cases these works only reach the microcosm level and those based on field trials have used non-formulated endophytic strains. Therefore, an adequate formulation of bacterial endophytes which allows an advantageous competitive situation is very important to achieve the expected function in field conditions.

On the other hand, the advances in genomics have allowed the genome analysis of cultured and uncultured bacterial endophytes which are presented as a useful tool for the selection of agronomically efficient strains, but at the present moment more works are needed to approach genomic and agronomic results, to make them coherently related.

This Special Issue will focus on the agronomic aspects of endophytes as crop-growth-promoting factors, and gather all the available technologies to improve the knowledge necessary to develop agronomically effective bacterial plant biostimulants (BPBs).

Prof. Encarna Velazquez
Prof. Fernando González-Andrés
Dr. José David Flores-Félix
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 papers will be 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 1600 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.


bacterial plant;



bacterial endophytes;

extensive crops;

horticultural crops;

forest crops;


Published Papers

This special issue is now open for submission, see below for planned papers.

Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: A critical review of the biochemical and physiological effects of Plant Growth Promoting Rhizobacteria beneficial for plant carbon balance
Authors: José Ortíz; Jennifer Mesa; Catalina Castro; Carolina Sanhueza; Teodoro Coba de la Peña; Luisa Bascuñán Godoy; Ricardo Aroca; Néstor Fernández del Saz
Affiliation: Laboratorio de Fisiología Vegetal, Departamento de Botánica, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Concepción 4030000, Chile. Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29010, Málaga, Spain. Centro de Estudios Avanzados en Zonas Áridas (CEAZA), La Serena 1700000, Chile. Department of Soil Microbiology and Symbiotic Systems, Estación Experimental del Zaidín‐Consejo Superior de Investigaciones Científicas (EEZ‐CSIC), Profesor Albareda 1, Granada 18008, Spain .
Abstract: Plant Growth Promoting Rhizobacteria (PGRP), are a group of free-living bacteria that inhabit the rhizosphere, and increase plant tolerance to biotic and abiotic stressors by modulating changes at metabolic, biochemical and physiological level in plant organs leading to an improved carbon balance. In this sense, changes in nutrient uptake, metabolic pathways, hormone accumulation, antioxidant activity, carbon assimilation and ATP synthesis have been described in plants stablishing symbiosis with PGPR. Moreover, co-inoculation of plant roots with PGRP and others soils microsymbionts such as Arbuscular mycorrhizal fungi (AMF) and Rhizobium bacteria have been described to improve plant physiological status. This review will recompile observations belonging to different studies describing changes at metabolic, biochemical and physiological level in plants stablishing symbiosis with PGPR, and will discuss the importance of the regulation of these parameters in improving carbon balance under stress and control conditions. Moreover, we will highlight the existence of others regulatory biochemical and physiological factors in PGRP plants, such as the regulation of alternative pathways of plant respiration that may be important for achieving an enhanced tolerance under stress.

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