Molecular Characterization of Stress Tolerant Plant Growth Promoting Rhizobacteria (PGPR) for Growth Enhancement of Rice

Habib, Sheikh Hasna; Kausar, H.; Saud, Halimi Mohd; Ismail, Mohd Razi; Othman, Radziah

doi:10.17957/ijab/15.0094

Cited by 38 publications

(24 citation statements)

References 29 publications

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“…For L. salicaria, low saline stress (i.e., EC of 5 dS m −1 ) can stimulate the growth in height of its seedlings. With the addition of alkaline salt, the damaging effect of saline-alkaline stress was generally more severe than that of saline stress at the same EC due to high pH, which was consistent with previous study [36]. CCI was inhibited by saline-alkaline stress in most tested plant species in this study.…”

Section: Effects Of Saline and Alkaline Stress On Seedlings Growthsupporting

confidence: 92%

Saline and Alkaline Tolerance of Wetland Plants—What are the Most Representative Evaluation Indicators?

et al. 2020

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The increasing discharge of wastewater containing inorganic salts, sometimes accompanied by high pH, has been a worldwide environmental problem. Constructed wetlands (CWs) are considered a viable technology for treating saline and/or alkaline wastewater provided that saline-alkaline tolerant plant species are selected and applied. The influence of both saline and alkaline stress on four wetland plant species during their seed germination, early growth, vegetative propagation and continued growth stages was evaluated by three experiments. Principal component analysis (PCA) was conducted for selecting representative indicators for evaluating the saline and alkaline tolerance of plants during vegetative propagation and plant growth stages. The saline and alkaline stress inhibited the vegetative propagation and plant growth of all tested plant species to varying degrees, therein the influences of saline-alkaline stress on plants were more marked than saline stress. The length of new roots, Na+ accumulation in plant tissue, Na+/K+ ratios in aerial tissue and the total dry biomass were selected as most representative indicators for evaluating the saline and alkaline tolerance of plants. Iris sibirica and Lythrum salicaria showed better saline and alkaline tolerance ability among tested species and could be grown in CWs for treating saline and/or alkaline wastewater.

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Section: Effects Of Saline and Alkaline Stress On Seedlings Growthsupporting

confidence: 92%

Saline and Alkaline Tolerance of Wetland Plants—What are the Most Representative Evaluation Indicators?

et al. 2020

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“…CS2 inoculation improved quantity of carotenoid, chl 'a', and chl 'b' contents ( Table 2). The increased biomass production in inoculated plants may be credited to increased synthesis of carotenoids along with chl 'a' and chl 'b' [37][38]. Similarly, improved chl contents, growth, and biomass production was observed in inoculated Eruca sativa plants growing under Cd stress [39].…”

Section: Resultsmentioning

confidence: 90%

Effect of Enterobacter sp. CS2 and EDTA on the Phytoremediation of Ni-contaminated Soil by Impatiens balsamina

Yasin¹,

Khan²,

Ahmad³

et al. 2018

Pol. J. Environ. Stud.

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During our current study we evaluated the effect of ethylenediaminetetracetic acid (EDTA) and Enterobacter sp. CS2 on nickel stress alleviation and phytoextraction by Impatiens balsamina L in spiked soil. Nickel resistant Enterobacter sp. CS2 was isolated from soil polluted by industrial effluents. The I. balsamina seeds primed with Enterobacter sp. CS2 were raised in EDTA-supplemented soil (10 mM) contaminated with 0, 100, 200, and 300 mg kg -1 Ni for 50 days. The effect of different treatments on plant growth attributes, nickel tolerance index, bioconcentration factor, and translocation factor were evaluated. The Ni stress reduced plant growth, carotenoids, and chlorophyll (chl) content. However, higher Ni uptake and proline contents were observed in plants growing in Ni-contaminated soils. The Enterobacter sp. CS2 inoculation further enhanced Ni uptake and proline contents in I. balsamina plants growing under Ni stress. The inoculated plants showed improved shoot length, root length, carotenoid content, chl 'a' and 'b' contents, root and shoot dry weight. The Ni tolerance index in Enterobacter sp. CS2-assisted plants was much higher compared to un-inoculated ones. The inoculated plants supplemented with EDTA enhanced 39%, 34%, and 30% Ni uptake in roots respectively under 100, 200, and 300 mg kg -1 of Ni treatment as compared with un-inoculated plants. The data regarding bioconcentration factor and translocation factor showed that Ni phytoextraction capability of I. balsamina plants was significantly enhanced with the supplementation of Enterobacter sp. CS2 and EDTA.

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“…All PGPR isolates were initially isolated from crop fields of the Universiti Putra Malaysia (UPM), Serdang, Selangor, and Semerak, Pasir Puteh, Kelantan, Malaysia, by using the dilution plate technique. All selected PGPR isolates possessed nitrogen fixation, phosphate solubilization, indoleacetic acid (IAA) synthesis, and salt tolerant properties [ 30 ].…”

Section: Methodsmentioning

confidence: 99%

Plant Growth-Promoting Rhizobacteria Enhance Salinity Stress Tolerance in Okra through ROS-Scavenging Enzymes

Habib

Kausar

Saud

2016

BioMed Research International

366

134

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Salinity is a major environmental stress that limits crop production worldwide. In this study, we characterized plant growth-promoting rhizobacteria (PGPR) containing 1-aminocyclopropane-1-carboxylate (ACC) deaminase and examined their effect on salinity stress tolerance in okra through the induction of ROS-scavenging enzyme activity. PGPR inoculated okra plants exhibited higher germination percentage, growth parameters, and chlorophyll content than control plants. Increased antioxidant enzyme activities (SOD, APX, and CAT) and upregulation of ROS pathway genes (CAT, APX, GR, and DHAR) were observed in PGPR inoculated okra plants under salinity stress. With some exceptions, inoculation with Enterobacter sp. UPMR18 had a significant influence on all tested parameters under salt stress, as compared to other treatments. Thus, the ACC deaminase-containing PGPR isolate Enterobacter sp. UPMR18 could be an effective bioresource for enhancing salt tolerance and growth of okra plants under salinity stress.

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Molecular Characterization of Stress Tolerant Plant Growth Promoting Rhizobacteria (PGPR) for Growth Enhancement of Rice

Cited by 38 publications

References 29 publications

Saline and Alkaline Tolerance of Wetland Plants—What are the Most Representative Evaluation Indicators?

Saline and Alkaline Tolerance of Wetland Plants—What are the Most Representative Evaluation Indicators?

Effect of Enterobacter sp. CS2 and EDTA on the Phytoremediation of Ni-contaminated Soil by Impatiens balsamina

Plant Growth-Promoting Rhizobacteria Enhance Salinity Stress Tolerance in Okra through ROS-Scavenging Enzymes

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