Plants endophytes: unveiling hidden agenda for bioprospecting toward sustainable agriculture

Dubey, Anamika; Malla, Muneer Ahmad; Kumar, Ashwani; Dayanandan, Selvadurai; Khan, M. L.

doi:10.1080/07388551.2020.1808584

Cited by 88 publications

(45 citation statements)

References 150 publications

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“…Bacterial endophytes must circumvent initial plant defenses to colonize the surface of the plant tissue and/or entry into the endosphere. Different approaches have shown that bacterial endophytes, unlike phytopathogens, can emit their microbial-associated molecular patterns (MAMPs) to avoid an overresponse of plant defenses [67]. MAPMs are known to generate different host responses, such as the production of reactive oxygen species (ROS) and phosphorylation cascades, and initiate transcriptional reprogramming and synthesis of secondary metabolites, through the MAMP-triggered immunity (MTI).…”

Section: Perception Of Bacterial Endophytes and Modulation Of Plant Immune Systemmentioning

confidence: 99%

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

Oukala

Aissat

Pastor

2021

Plants

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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.

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Section: Perception Of Bacterial Endophytes and Modulation Of Plant Immune Systemmentioning

confidence: 99%

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

Oukala

Aissat

Pastor

2021

Plants

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“…The colonization of plant organisms by bacterial or fungal endophytes can enhance resistance to biotic and abiotic stress, supporting the healthy growth and development of the plant hosts [ 12 , 67 ]. For this reason, numerous attempts have recently been made to involve these endophytic microorganisms in the design of modern environmentally-friendly plant protection products [ 68 , 69 ]. Spontaneous and forced infiltration methods can be useful in the design and testing of bio-protection products containing microbes with an antagonistic effect on phytopathogens.…”

Section: Research Of Plant-microorganism Relationshipsmentioning

confidence: 99%

Leaf infiltration in plant science: old method, new possibilities

Chincinska

2021

Plant Methods

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The penetration of substances from the surface to deep inside plant tissues is called infiltration. Although various plant tissues may be effectively saturated with externally applied fluid, most described infiltration strategies have been developed for leaves. The infiltration process can be spontaneous (under normal atmospheric pressure) or forced by a pressure difference generated between the lamina surface and the inside of the leaf. Spontaneous infiltration of leaf laminae is possible with the use of liquids with sufficiently low surface tension. Forced infiltration is most commonly performed using needle-less syringes or vacuum pumps.Leaf infiltration is widely used in plant sciences for both research and application purposes, usually as a starting technique to obtain plant material for advanced experimental procedures. Leaf infiltration followed by gentle centrifugation allows to obtain the apoplastic fluid for further analyses including various omics. In studies of plant-microorganism interactions, infiltration is used for the controlled introduction of bacterial suspensions into leaf tissues or for the isolation of microorganisms inhabiting apoplastic spaces of leaves. The methods based on infiltration of target tissues allow the penetration of dyes, fixatives and other substances improving the quality of microscopic imaging. Infiltration has found a special application in plant biotechnology as a method of transient transformation with the use of Agrobacterium suspension (agroinfiltration) enabling genetic modifications of mature plant leaves, including the local induction of mutations using genome editing tools. In plant nanobiotechnology, the leaves of the target plants can be infiltrated with suitably prepared nanoparticles, which can act as light sensors or increase the plant resistance to environmental stress. In addition the infiltration has been also intensively studied due to the undesirable effects of this phenomenon in some food technology sectors, such as accidental contamination of leafy greens with pathogenic bacteria during the vacuum cooling process.This review, inspired by the growing interest of the scientists from various fields of plant science in the phenomenon of infiltration, provides the description of different infiltration methods and summarizes the recent applications of this technique in plant physiology, phytopathology and plant (nano-)biotechnology.

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“…Bacterial endophytes must circumvent initial plant defenses to colonize the surface of the plant tissue and/or entry into the endosphere. Different approaches have shown that bacterial endophytes, unlike phytopathogens, can emit their microbial-associated molecular patterns (MAMPs) to avoid an overresponse of plant defenses [65]. MAPMs are known to generate different host responses such as the production of reactive oxygen species (ROS), phosphorylation cascades, and initiate transcriptional reprogramming and synthesis of secondary metabolites, through the MAMP-triggered immunity (MTI).…”

Section: Perception Of Bacterial Endophytes and Modulation Of Plant Immune Systemmentioning

confidence: 99%

“…The diversity of microorganisms in the phytosphere may influence pathogens independently of the plant immune system. Endophytes may adopt several strategies to attenuate the negative impacts of pathogens and pests on their host [2,26,65]. Those activities may be achieved by direct inhibition of pathogens since they share with them similar colonizing patterns and being in intimate contact with plants.…”

Section: Direct Interactions In the Holobiontmentioning

confidence: 99%

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

Oukala¹,

Aissat²,

Pastor³

2021

Preprint

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Bacterial endophytes interact closely with plant tissues and constitute an essential part of the plant microbiome. These interactions can promote plant growth and elicit specific defense responses against abiotic stresses and pathogen attacks. In this paper, we review the role of endophytic bacteria in modulating defenses of the host rendering the entire plant more resistant to pathogens and pests. The endophyte-induced resistance will probably introduce a new factor when consid-ering plant-pathogen interactions. The impact of the bacterial endosymbionts on the host leading to the priming state is also discussed since it confers a specific adaptation of the plant to the biotic threat.

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Plants endophytes: unveiling hidden agenda for bioprospecting toward sustainable agriculture

Cited by 88 publications

References 150 publications

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

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

Leaf infiltration in plant science: old method, new possibilities

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

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