Combined effects of the plant growth-promoting bacterium Pseudomonas putida UW4 and salinity stress on the Brassica napus proteome

Cheng, Zhenyu; Woody, Owen Z.; McConkey, Brendan J.; Glick, Bernard R.

doi:10.1016/j.apsoil.2011.10.006

Cited by 115 publications

(57 citation statements)

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“…Such contrasting effects on root growth between PGPB and acdS- mutants of PGPB were also observed in a study with A. thaliana where inoculation with an acdS- mutant strain resulted in seedlings with significantly longer root hairs than inoculation with the wild type strain (Contesto et al, 2008). In Brassica napus , ethylene production in plants treated with P. putida UW4 was reduced in the entire plant during salt treatments (Cheng et al, 2012) indicating that the resultant effects may be systemic and far-reaching. Regardless of the mechanism, camelina appears to be highly responsive to the presence of PGPB, in particular endophytic types, under both normal and stress conditions.…”

Section: Discussionmentioning

confidence: 99%

“…Irrigation from both ground and surface water sources increases soil salinity over time as dissolved minerals accumulate in the soil. Collectively, salinity issues affect 20% of cultivated land and up to 50% of irrigated land worldwide (Cheng et al, 2012). …”

Section: Introductionmentioning

confidence: 99%

“…Salinity stress has been shown to elevate ethylene levels (Mayak et al, 2004), which affects almost all aspects of plant growth and development, including the response to biotic and abiotic stresses (Cao et al, 2008). Tomato, canola, maize, groundnut, cotton, cucumber, and red pepper were more resistant to high salinity when treated with various PGPB strains producing ACC deaminase (Mayak et al, 2004; Nadeem et al, 2007; Saravanakumar and Samiyappan, 2007; Yue et al, 2007; Gamalero et al, 2010; Siddikee et al, 2011; Cheng et al, 2012; Gamalero and Glick, 2015). …”

Section: Introductionmentioning

confidence: 99%

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Inoculation of Soil with Plant Growth Promoting Bacteria Producing 1-Aminocyclopropane-1-Carboxylate Deaminase or Expression of the Corresponding acdS Gene in Transgenic Plants Increases Salinity Tolerance in Camelina sativa

Heydarian

Gruber

et al. 2016

Front. Microbiol.

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Camelina sativa (camelina) is an oilseed crop touted for use on marginal lands; however, it is no more tolerant of soil salinity than traditional crops, such as canola. Plant growth-promoting bacteria (PGPB) that produce 1-aminocyclopropane-1-carboxylate deaminase (ACC deaminase) facilitate plant growth in the presence of abiotic stresses by reducing stress ethylene. Rhizospheric and endophytic PGPB and the corresponding acdS- mutants of the latter were examined for their ability to enhance tolerance to salt in camelina. Stimulation of growth and tolerance to salt was correlated with ACC deaminase production. Inoculation of soil with wild-type PGPB led to increased shoot length in the absence of salt, and increased seed production by approximately 30–50% under moderately saline conditions. The effect of ACC deaminase was further examined in transgenic camelina expressing a bacterial gene encoding ACC deaminase (acdS) under the regulation of the CaMV 35S promoter or the root-specific rolD promoter. Lines expressing acdS, in particular those using the rolD promoter, showed less decline in root length and weight, increased seed production, better seed quality and higher levels of seed oil production under salt stress. This study clearly demonstrates the potential benefit of using either PGPB that produce ACC deaminase or transgenic plants expressing the acdS gene under the control of a root-specific promoter to facilitate plant growth, seed production and seed quality on land that is not normally suitable for the majority of crops due to high salt content.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Inoculation of Soil with Plant Growth Promoting Bacteria Producing 1-Aminocyclopropane-1-Carboxylate Deaminase or Expression of the Corresponding acdS Gene in Transgenic Plants Increases Salinity Tolerance in Camelina sativa

Heydarian

Gruber

et al. 2016

Front. Microbiol.

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“…When such requirements are not adequately met, null or undesirable effects in plant growth have been observed in other systems (Xie et al, 1996; Persello-Cartieaux et al, 2003). On the other hand, a case for the involvement of ACC deamination as the main bacterial modulator of growth and tolerance to saline stress in plants is supported by examples involving AcdS mutants of Pseudomonas species (Cheng et al, 2012; Ali et al, 2014; Han et al, 2015) but, for the most part of the reports in literature, the actual extent of the contribution of this bacterial enzyme to salinity tolerance induction in the host is not explored in detail, and has been mostly inferred from the existence of a functional AcdS in active bacterial isolates (Onofre-Lemus et al, 2009; Ahmad et al, 2013; Chang et al, 2014; Singh et al, 2015). However, it is worth noting that, in several cases, high ACC deaminase activity levels in isolates do not correlate with a better performance in salinity tolerance induction (Zheng et al, 2008; Tank and Saraf, 2010; Tiwari et al, 2011; Liu et al, 2013; Mapelli et al, 2013; Ramadoss et al, 2013), or even growth promotion activity in general (Dey et al, 2004; Long et al, 2008; Bruto et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Volatile-Mediated Effects Predominate in Paraburkholderia phytofirmans Growth Promotion and Salt Stress Tolerance of Arabidopsis thaliana

et al. 2016

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Abiotic stress has a growing impact on plant growth and agricultural activity worldwide. Specific plant growth promoting rhizobacteria have been reported to stimulate growth and tolerance to abiotic stress in plants, and molecular mechanisms like phytohormone synthesis and 1-aminocyclopropane-1-carboxylate deamination are usual candidates proposed to mediate these bacterial effects. Paraburkholderia phytofirmans PsJN is able to promote growth of several plant hosts, and improve their tolerance to chilling, drought and salinity. This work investigated bacterial determinants involved in PsJN stimulation of growth and salinity tolerance in Arabidopsis thaliana, showing bacteria enable plants to survive long-term salinity treatment, accumulating less sodium within leaf tissues relative to non-inoculated controls. Inactivation of specific bacterial genes encoding ACC deaminase, auxin catabolism, N-acyl-homoserine-lactone production, and flagellin synthesis showed these functions have little influence on bacterial induction of salinity tolerance. Volatile organic compound emission from strain PsJN was shown to reproduce the effects of direct bacterial inoculation of roots, increasing plant growth rate and tolerance to salinity evaluated both in vitro and in soil. Furthermore, early exposure to VOCs from P. phytofirmans was sufficient to stimulate long-term effects observed in Arabidopsis growth in the presence and absence of salinity. Organic compounds were analyzed in the headspace of PsJN cultures, showing production of 2-undecanone, 7-hexanol, 3-methylbutanol and dimethyl disulfide. Exposure of A. thaliana to different quantities of these molecules showed that they are able to influence growth in a wide range of added amounts. Exposure to a blend of the first three compounds was found to mimic the effects of PsJN on both general growth promotion and salinity tolerance. To our knowledge, this is the first report on volatile compound-mediated induction of plant abiotic stress tolerance by a Paraburkholderia species.

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“…For example in Euphorbia pulcherrima cultivars and Brassica napus, P. putida was found to have positively affected plant growth (Cheng et al, 2012;Rodriguez et al, 2014). In addition to the study on the usage, researchers had also studied the feasibility of encapsulating these bacteria to enhance its functionality and its survival rate (Rekha et al, 2007).…”

Section: Author(s) Agree That This Article Remains Permanently Open Amentioning

confidence: 99%

Effect of encapsulated Pseudomonas putida strain PF1P on plant growth and its microbial ecosystem

Jeffrey¹,

Nur²

2017

Afr. J. Biotechnol.

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Pseudomonas putida is a well-known plant growth promoting bacterium (PGPB) with the capacity to improve plant growth. The objective of this study was to assess the effect of P. putida towards plant growth and its interaction with its microbial ecosystem. P. putida strain PF1P was isolated from the rhizosphere of banana plant (Musa species). The isolated P. putida strain PF1P possess ability to secrete acetic acid (42.1 µg/mL) and gibberellic acid (10.1 µg/mL). Further study conducted showed that P. putida strain PF1P was able to increase 54.6% of fresh plant weight and 51.3% of root length for Brassica chinensis var parachinensis. Soil microbial assessment indicates that P. putida strain PF1P did not have any detrimental effects as Shannon diversity index showed an increase in the microbial diversity from 2.635 to 2.903 with the colony forming unit per gram of soil increase from 9 × 10 7 to 5 × 10 9 , respectively for control and treated soil. Soil health check also showed that inoculation of P. putida strain PF1P does not cause any negative effect to the soil. Inoculation of P. putida strain PF1P proved to improve the growth of the plant and microbial diversity in the soil. Mass production of this bacterium should be studied for possible industrial application.

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Combined effects of the plant growth-promoting bacterium Pseudomonas putida UW4 and salinity stress on the Brassica napus proteome

Cited by 115 publications

References 50 publications

Inoculation of Soil with Plant Growth Promoting Bacteria Producing 1-Aminocyclopropane-1-Carboxylate Deaminase or Expression of the Corresponding acdS Gene in Transgenic Plants Increases Salinity Tolerance in Camelina sativa

Inoculation of Soil with Plant Growth Promoting Bacteria Producing 1-Aminocyclopropane-1-Carboxylate Deaminase or Expression of the Corresponding acdS Gene in Transgenic Plants Increases Salinity Tolerance in Camelina sativa

Volatile-Mediated Effects Predominate in Paraburkholderia phytofirmans Growth Promotion and Salt Stress Tolerance of Arabidopsis thaliana

Effect of encapsulated Pseudomonas putida strain PF1P on plant growth and its microbial ecosystem

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