Utilization of Endophytic Bacteria Isolated from Legume Root Nodules for Plant Growth Promotion

Ríos-Ruiz, Winston Franz; Valdez-Nuñez, Renzo Alfredo; Bedmar, Eulogio J.; Castellano‐Hinojosa, Antonio

doi:10.1007/978-3-030-30926-8_6

Cited by 13 publications

(13 citation statements)

References 152 publications

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“…The recurring endophytes are represented by the classes and Gammaproteobacterial ( Pseudomonas , Enterobacter, Pantoea ) and the Gram-positive phylum of Firmicutes ( Bacillus , Paenibacillus ). For the rest, a peculiar case is the variety of different species belonging to the genus Micromonospora (Phylum Actinobacteria), all found in Pisum sativum nodules that were described in five different reports reviewed in a comprehensive survey chapter [ 29 ].…”

Section: Resultsmentioning

confidence: 99%

Legumes of the Sardinia Island: Knowledge on Symbiotic and Endophytic Bacteria and Interactive Software Tool for Plant Species Determination

Muresu

Porceddu

Concheri

et al. 2022

Plants

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A meta-analysis was carried out on published literature covering the topic of interactive plant microbiology for botanical species of legumes occurring within the boundary of the Italian island Sardinia, lying between the Tyrrhenian and the western Mediterranean seas. Reports were screened for the description of three types of bacterial occurrences; namely, (a) the nitrogen-fixing symbionts dwelling in root nodules; (b) other bacteria co-hosted in nodules but having the ancillary nature of endophytes; (c) other endophytes isolated from different non-nodular portions of the legume plants. For 105 plant species or subspecies, over a total of 290 valid taxonomical descriptions of bacteria belonging to either one or more of these three categories were found, yielding 85 taxa of symbionts, 142 taxa of endophytes in nodules, and 33 in other plant parts. The most frequent cases were within the Medicago, Trifolium, Lotus, Phaseolus, and Vicia genera, the majority of symbionts belonged to the Rhizobium, Mesorhizobium, Bradyrhizobium, and Sinorhizobium taxa. Both nodular and extra-nodular endophytes were highly represented by Gammaproteobacteria (Pseudomonas, Enterobacter, Pantoea) and Firmicutes (Bacillus, Paenibacillus), along with a surprisingly high diversity of the Actinobacteria genus Micromonospora. The most plant-promiscuous bacteria were Sinorhizobium meliloti as symbiont and Bacillus megaterium as endophyte. In addition to the microbial analyses we introduce a practical user-friendly software tool for plant taxonomy determination working in a Microsoft Excel spreadsheet that we have purposely elaborated for the classification of legume species of Sardinia. Its principle is based on subtractive keys that progressively filter off the plants that do not comply with the observed features, eventually leaving only the name of the specimen under examination.

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Section: Resultsmentioning

confidence: 99%

Legumes of the Sardinia Island: Knowledge on Symbiotic and Endophytic Bacteria and Interactive Software Tool for Plant Species Determination

Muresu

Porceddu

Concheri

et al. 2022

Plants

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“…Before any ex-planta application for the agricultural crop, some pre-requisites need to be fulfilled for selection as an inoculant. These factors include colonization ability in plant roots, competition with other microflora and their survival in soil, upsurge exudate production which acts as a bridge between plant and bacteria, and improvement of soil health ( Beauregard et al, 2013 ; Carvalhais et al, 2013 ; Ríos-Ruiz et al, 2019 ). Seven bacterial endophytes were isolated from different legume crops, namely, Glycine max, Vigna unguiculata, Vigna mungo, Vigna radiata , and Arachis hypogaea and categorized on the basis of PGP traits.…”

Section: Plant Growth Promoting Endophytic Bacteria: the Base Of “Sus...mentioning

confidence: 99%

Endophytism: A Multidimensional Approach to Plant–Prokaryotic Microbe Interaction

et al. 2022

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Plant growth and development are positively regulated by the endophytic microbiome via both direct and indirect perspectives. Endophytes use phytohormone production to promote plant health along with other added benefits such as nutrient acquisition, nitrogen fixation, and survival under abiotic and biotic stress conditions. The ability of endophytes to penetrate the plant tissues, reside and interact with the host in multiple ways makes them unique. The common assumption that these endophytes interact with plants in a similar manner as the rhizospheric bacteria is a deterring factor to go deeper into their study, and more focus was on symbiotic associations and plant–pathogen reactions. The current focus has shifted on the complexity of relationships between host plants and their endophytic counterparts. It would be gripping to inspect how endophytes influence host gene expression and can be utilized to climb the ladder of “Sustainable agriculture.” Advancements in various molecular techniques have provided an impetus to elucidate the complexity of endophytic microbiome. The present review is focused on canvassing different aspects concerned with the multidimensional interaction of endophytes with plants along with their application.

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“…In spite of the progress of the research in this field, regulatory networks of the interaction of host plant-associated microbes in heavy metal stress are unknown [10] and identification of undiscovered genes involved in endophytism has not been pursued systematically [90]. So efforts should be directed toward identification of different genes of legumes and their associated endophyts involved in the interaction processes, because like these information can benefit in biotechnological applications, recombinant technologies and ensure the efficiency of the interaction between the host legume and its associated bacteria.…”

Section: The Genetic Mechanisms Involved In Nodule Endophytic Bacteria-legume Interaction To Mitigate the Different Stressesmentioning

confidence: 99%

Legumes and Nodule Associated Bacteria Interaction as Key Factor for Abiotic Stresses Impact Mitigation

Idris¹,

Noh²

2022

Legumes Research - Volume 1

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Due to climate change, different soil stresses are increasing continuously and they threat the world food security as they limit crop productivity. Therefore, this chapter aims at integrate information about the interaction between legumes and endophytes which will help to: deep understanding of the endophytes-legume relationship, draw attention to the possibilities to exploit this relationship in soil stress mitigation and unraveling what is need to be addressed in the future. The study reviewed the most recent previous scientific works in the field. For legumes tissue colonization, endophytes almost use the same routs which results in their presence in the same niches. Co-inoculation of these bacteria enhances plant growth directly and indirectly. Some endophytes characterized by stress tolerance which interact with legumes and mitigate the adverse effect of soil stresses like salinity, acidity/alkalinity, drought and heavy metal contamination. To reduce stress and enhance plant growth, legume-associated bacteria produce ACC deaminase and other compounds. The interaction process involves induction and expression of many legume-associated bacteria chromosomal and plasmid genes which indicates that this process is a genetic based. So isolation of stress tolerant legume-associated microbes and identification of the gene related to stress tolerance will aid in production of genetic engineered endophytes adaptive to different stresses. It is concluded that all soil stresses can be addressed by application of stress tolerant endophytes to the soil affected with environmental stresses which is sustainable and low cost approach. To maximize the benefit, searching for indigenous stress tolerant endophytes is recommended.

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Utilization of Endophytic Bacteria Isolated from Legume Root Nodules for Plant Growth Promotion

Cited by 13 publications

References 152 publications

Legumes of the Sardinia Island: Knowledge on Symbiotic and Endophytic Bacteria and Interactive Software Tool for Plant Species Determination

Legumes of the Sardinia Island: Knowledge on Symbiotic and Endophytic Bacteria and Interactive Software Tool for Plant Species Determination

Endophytism: A Multidimensional Approach to Plant–Prokaryotic Microbe Interaction

Legumes and Nodule Associated Bacteria Interaction as Key Factor for Abiotic Stresses Impact Mitigation

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