The ACC deaminase expressing endophyte Pseudomonas spp. Enhances NaCl stress tolerance by reducing stress-related ethylene production, resulting in improved growth, photosynthetic performance, and ionic balance in tomato plants

Win, Khin Thuzar; Tanaka, Fukuyo; Okazaki, Keiichi; Ohwaki, Yoshinari

doi:10.1016/j.plaphy.2018.04.038

Cited by 117 publications

(56 citation statements)

References 41 publications

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“…In addition, the accumulation of Na + in leaves was less in bacterially inoculated plants compared to un-inoculated plant leaves. Several reports are available on PGPR mediation of salt tolerance in plants by reducing the transport of Na + from the roots to leaves (Yasar et al, 2006;Zhang et al, 2013;Win et al, 2018;Romero-Munar et al, 2019). ROS are induced during salt exposure and lead to oxidative stress in plant cells (Miller et al, 2010;Sharma et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Sphingobacterium sp. BHU-AV3 Induces Salt Tolerance in Tomato by Enhancing Antioxidant Activities and Energy Metabolism

Vaishnav

Singh

et al. 2020

Front. Microbiol.

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Salt tolerant bacteria can be helpful in improving a plant's tolerance to salinity. Although plant-bacteria interactions in response to salt stress have been characterized, the precise molecular mechanisms by which bacterial inoculation alleviates salt stress in plants are still poorly explored. In the present study, we aimed to determine the role of a salt-tolerant plant growth-promoting rhizobacteria (PGPR) Sphingobacterium BHU-AV3 for improving salt tolerance in tomato through investigating the physiological responses of tomato roots and leaves under salinity stress. Tomato plants inoculated with BHU-AV3 and challenged with 200 mM NaCl exhibited less senescence, positively correlated with the maintenance of ion balance, lowered reactive oxygen species (ROS), and increased proline content compared to the non-inoculated plants. BHU-AV3-inoculated plant leaves were less affected by oxidative stress, as evident from a reduction in superoxide contents, cell death, and lipid peroxidation. The reduction in ROS level was associated with the increased antioxidant enzyme activities along with multiple-isoform expression [peroxidase (POD), polyphenol oxidase (PPO), and superoxide dismutase (SOD)] in plant roots. Additionally, BHU-AV3 inoculation induced the expression of proteins involved in (i) energy production [ATP synthase], (ii) carbohydrate metabolism (enolase), (iii) thiamine biosynthesis protein, (iv) translation protein (elongation factor 1 alpha), and the antioxidant defense system (catalase) in tomato roots. These findings have provided insight into the molecular mechanisms of bacteria-mediated alleviation of salt stress in plants. From the study, we can conclude that BHU-AV3 inoculation effectively induces antioxidant systems and energy metabolism in tomato roots, which leads to whole plant protection during salt stress through induced systemic tolerance.

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Section: Discussionmentioning

confidence: 99%

Sphingobacterium sp. BHU-AV3 Induces Salt Tolerance in Tomato by Enhancing Antioxidant Activities and Energy Metabolism

Vaishnav

Singh

et al. 2020

Front. Microbiol.

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“…Some plant growth promoting strains are particularly effective in the promotion of tomato seedlings, whose production is carried out in nurseries exclusively dedicated to the commercialization of different seedlings, representing one of the most important economic resources in the agronomic field. For this reason, in many works the effect of different plant growth promoting bacteria on tomato seedlings have been evaluated, such as Burkholderia [40], Azotobacter and Serratia [41], Rhizobium [14], Bacillus [40,41,43,47], Pseudomonas [37,38,40,41] and Arthrobacter [48]. Nevertheless, this is the first study about the effect of Mesorhizobium strains on the growth and development of tomato seedlings.…”

Section: Discussionmentioning

confidence: 99%

“…The strains actively colonizing the roots of plants can have a positive effect on their development. In the case of tomato, many researchers have analyzed the effect of the inoculation in a wide array of diverse bacteria, such as Pseudomonas [35][36][37][38], Methylobacterium [39], Bacillus, Burkholderia and Pseudomonas [40], Azotobacter, Bacillus, Pseudomonas and Serratia [41], Paenibacillus and Bacillus [28], Rhizobium [14], Bacillus, Erwinia and Pseudomonas [42], Bacillus [43], Burkholderia [29], Alcaligenes and Bacillus [44], Streptomyces [45], Pseudomonas, Staphylococcus, Bacillus and Pantoea [46], Bacillus [47], Arthrobacter and Pseudomonas [48] and Bacillus and Acinetobacter [49]. Nevertheless, there are no data about the effect of strains from the genus Mesorhizobium on tomato seedlings.…”

Section: Introductionmentioning

confidence: 99%

Plant Growth Promotion Abilities of Phylogenetically Diverse Mesorhizobium Strains: Effect in the Root Colonization and Development of Tomato Seedlings

et al. 2020

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Mesorhizobium contains species widely known as nitrogen-fixing bacteria with legumes, but their ability to promote the growth of non-legumes has been poorly studied. Here, we analyzed the production of indole acetic acid (IAA), siderophores and the solubilization of phosphate and potassium in a collection of 24 strains belonging to different Mesorhizobium species. All these strains produce IAA, 46% solubilized potassium, 33% solubilize phosphate and 17% produce siderophores. The highest production of IAA was found in the strains Mesorhizobium ciceri CCANP14 and Mesorhizobium tamadayense CCANP122, which were also able to solubilize potassium. Moreover, the strain CCANP14 showed the maximum phosphate solubilization index, and the strain CCANP122 was able to produce siderophores. These two strains were able to produce cellulases and cellulose and to originate biofilms in abiotic surfaces and tomato root surface. Tomato seedlings responded positively to the inoculation with these two strains, showing significantly higher plant growth traits than uninoculated seedlings. This is the first report about the potential of different Mesorhizobium species to promote the growth of a vegetable. Considering their use as safe for humans, animals and plants, they are an environmentally friendly alternative to chemical fertilizers for non-legume crops in the framework of sustainable agriculture.

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“…Moreover, Gram-positive and Gram-negative bacteria, including Pseudomonas, Azospirillum, Azotobacter, Streptomyces, Enterobacter, Alcaligenes, Arthrobacter, Burkholderia, and Bacillus could enhance the plant growth and suppress phytopathogens [64]. Diverse strains of Pseudomonas, Bacillus, Arthrobacter, and Pantoea species associated with soybean and wheat roots exhibited growth-promotion properties such as phytohormone production, mineral solubilization, and the production of the enzyme 1-amino cyclopropnae-1-carbixylate (ACC) deaminase [65,66]. ACC deaminase reduces the endogenous level of the stress hormone ET by limiting the amount of plant ACC deaminase, and prevents ET-induced root growth inhibition.…”

Section: The Functions Of Plant Microbiome Are Essential For the Hostmentioning

confidence: 99%

Cannabis Microbiome and the Role of Endophytes in Modulating the Production of Secondary Metabolites: An Overview

Taghinasab

Jabaji

2020

Microorganisms

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Plants, including cannabis (Cannabis sativa subsp. sativa), host distinct beneficial microbial communities on and inside their tissues and organs, including seeds. They contribute to plant growth, facilitating mineral nutrient uptake, inducing defence resistance against pathogens, and modulating the production of plant secondary metabolites. Understanding the microbial partnerships with cannabis has the potential to affect the agricultural practices by improving plant fitness and the yield of cannabinoids. Little is known about this beneficial cannabis-microbe partnership, and the complex relationship between the endogenous microbes associated with various tissues of the plant, and the role that cannabis may play in supporting or enhancing them. This review will consider cannabis microbiota studies and the effects of endophytes on the elicitation of secondary metabolite production in cannabis plants. The review aims to shed light on the importance of the cannabis microbiome and how cannabinoid compound concentrations can be stimulated through symbiotic and/or mutualistic relationships with endophytes.

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The ACC deaminase expressing endophyte Pseudomonas spp. Enhances NaCl stress tolerance by reducing stress-related ethylene production, resulting in improved growth, photosynthetic performance, and ionic balance in tomato plants

Cited by 117 publications

References 41 publications

Sphingobacterium sp. BHU-AV3 Induces Salt Tolerance in Tomato by Enhancing Antioxidant Activities and Energy Metabolism

Sphingobacterium sp. BHU-AV3 Induces Salt Tolerance in Tomato by Enhancing Antioxidant Activities and Energy Metabolism

Plant Growth Promotion Abilities of Phylogenetically Diverse Mesorhizobium Strains: Effect in the Root Colonization and Development of Tomato Seedlings

Cannabis Microbiome and the Role of Endophytes in Modulating the Production of Secondary Metabolites: An Overview

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