Next Article in Journal
Chemical Composition and New Biological Activities of Essential Oil and Hydrosol of Hypericum perforatum L. ssp. veronense (Schrank) H. Lindb
Next Article in Special Issue
Isolation and Characterization of Pseudomonas chlororaphis Strain ST9; Rhizomicrobiota and in Planta Studies
Previous Article in Journal
Detection and Distribution of Viruses Infecting Garlic Crops in Australia
Previous Article in Special Issue
The Foliar Application of Rice Phyllosphere Bacteria induces Drought-Stress Tolerance in Oryza sativa (L.)
 
 
Review

Bacterial Endophytes: The Hidden Actor in Plant Immune Responses against Biotic Stress

1
Laboratory of Ecological Microbiology, Department of Microbiology, Faculty of Nature and Life Sciences, University of Bejaia, 06000 Bejaia, Algeria
2
Department of Microbiology and Biochemistry, Faculty of Nature and Life Sciences, University of Batna 2, 05000 Batna, Algeria
3
Metabolic Integration and Cell Signaling Laboratory, Plant Physiology Section, Departamento Ciencias Agrarias y del Medio Natural, Universitat Jaume I, 12071 Castelló de la Plana, Spain
*
Authors to whom correspondence should be addressed.
Academic Editor: George Lazarovits
Plants 2021, 10(5), 1012; https://doi.org/10.3390/plants10051012
Received: 6 April 2021 / Revised: 4 May 2021 / Accepted: 13 May 2021 / Published: 19 May 2021
(This article belongs to the Special Issue Plant Growth Promoting Bacteria)
Bacterial endophytes constitute an essential part of the plant microbiome and are described to promote plant health by different mechanisms. The close interaction with the host leads to important changes in the physiology of the plant. Although beneficial bacteria use the same entrance strategies as bacterial pathogens to colonize and enter the inner plant tissues, the host develops strategies to select and allow the entrance to specific genera of bacteria. In addition, endophytes may modify their own genome to adapt or avoid the defense machinery of the host. The present review gives an overview about bacterial endophytes inhabiting the phytosphere, their diversity, and the interaction with the host. Direct and indirect defenses promoted by the plant–endophyte symbiont exert an important role in controlling plant defenses against different stresses, and here, more specifically, is discussed the role against biotic stress. Defenses that should be considered are the emission of volatiles or antibiotic compounds, but also the induction of basal defenses and boosting plant immunity by priming defenses. The primed defenses may encompass pathogenesis-related protein genes (PR family), antioxidant enzymes, or changes in the secondary metabolism. View Full-Text
Keywords: priming; endophytic bacteria; ISR; pathogens; signaling priming; endophytic bacteria; ISR; pathogens; signaling
Show Figures

Figure 1

MDPI and ACS Style

Oukala, N.; Aissat, K.; Pastor, V. Bacterial Endophytes: The Hidden Actor in Plant Immune Responses against Biotic Stress. Plants 2021, 10, 1012. https://doi.org/10.3390/plants10051012

AMA Style

Oukala N, Aissat K, Pastor V. Bacterial Endophytes: The Hidden Actor in Plant Immune Responses against Biotic Stress. Plants. 2021; 10(5):1012. https://doi.org/10.3390/plants10051012

Chicago/Turabian Style

Oukala, Nadira, Kamel Aissat, and Victoria Pastor. 2021. "Bacterial Endophytes: The Hidden Actor in Plant Immune Responses against Biotic Stress" Plants 10, no. 5: 1012. https://doi.org/10.3390/plants10051012

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop