Effect ofAzospirillum lipoferumandAzotobacter chroococcumon germination and early growth of hopbush shrub (Dodonaea viscosaL.) under salinity stress

Yousefi, Sonia; Kartoolinejad, Davoud; Bahmani, Mohamad; Naghdi, Reza

doi:10.1080/10549811.2016.1256220

Cited by 48 publications

(22 citation statements)

References 25 publications

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“…Inoculated wheat (T. aestivum) seedlings with Azospirillum subjected to osmotic stress developed significant increased coleoptiles, fresh weight, better water status, all yield components, grains number per spike, grains weight per spike, the length of spike, nitrogen content, grains protein content, straw protein content above un-inoculated wheat plants than non-inoculated seedlings. The effect of salinity on pigment concentrations (chlorophyll a, b and total chlorophyll) appeared significant decrease of chlorophyll and pigment concentrations (chlorophyll a, b and total chlorophyll) had significantly positive affect by salt-tolerant Azospirillum inoculation (Zaied et al, 2009;Sonia et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of salt-tolerant Azospirillum spp and its role in improvement of wheat growth parameter

El-Akhdar¹,

El‐Sheekh

Allam

et al. 2019

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IGHTEEN isolates of Azospirillum were collected from different sites at Kafrelsheikh Governorate. The isolates were cultivated on nitrogen-free malate (NFM) medium supplemented with different NaCl g l-1 concentrations (0, 0.7 and 1.5%) and tryptophan to study the salt tolerant in vitro and indole acetic acid production. Pots were used to evaluate the most salt-tolerant and efficient species and soils of this experiment had artificially salinized with different salinity levels. The most salt-tolerant A 10 and A 11 species were genetically identified by 16S rRNA sequencing and the results revealed to be closest matched at 98% A. lipoferum strains and selected to inoculate wheat plants. The investigated A. lipoferum species had variable divergence growth at different salinity levels. Actually, increased salinity had deleterious effect on IAA production. In addition, salinity had deleterious effect on dry weights of plants, number and dry weight of branches, total chlorophyll, sodium and potassium% with increasing salinity levels. But, inoculation with associative nitrogen fixation A. lipoferum isolates enhanced the previous parameters. Thus, inoculation with the salt-tolerant A.lipoferum isolates decreased the deleterious effect of salt stress on wheat plants.

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Section: Introductionmentioning

confidence: 99%

Evaluation of salt-tolerant Azospirillum spp and its role in improvement of wheat growth parameter

El-Akhdar¹,

El‐Sheekh

Allam

et al. 2019

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“…The sticky seeds were inoculated under darkness with a 10 ml growth-promoting rhizobacterial inoculum in both simple (individual) and combined manners (Noumavo et al, 2013;Yousefi et al, 2017). After the seeds had been inoculated by the intended bacteria, salt solubilisation was carried out in order to simulate salinity stress (NaCl).…”

Section: Seeds Rhizobacterial Inoculationmentioning

confidence: 99%

“…Also, the mentioned species is known to have distinct antidiabetic properties (Ahmad et al, 2012;Muthukumran et al, 2001). The given species is one of the shrub species found in the semiarid regions of southern Iran, and in many tropical and sub-tropical countries in the world; however its reproduction in natural habitats has faced substantial problems, which caused that the establishment of the mentioned species seedlings has dramatically decreased (Yousefi et al, 2017). On the other hand, to the best of our knowledge, there is no documented paper in the existing literature reporting the role of PGPR bacteria (in individual and combined forms) on hopbush species' germination under salinity stress.…”

Section: Introductionmentioning

confidence: 99%

Salinity tolerance of Dodonaea viscosa L. inoculated with plant growth-promoting rhizobacteria: assessed based on seed germination and seedling growth characteristics

et al. 2017

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Yousefi, S., Kartoolinejad, D., Bahmani, M., Naghdi, R., 2017. Salinity tolerance of Dodonaea viscosa L. inoculated with plant growth-promoting rhizobacteria: assessed based on seed germination and seedling growth characteristics. Folia Oecologica, 44: 20-27.The study was conducted to evaluate the potential of different strains of plant growth-promoting rhizobacteria (PGPR) to reduce the effects of salinity stress on the medicinal hopbush plant. The bacterium factor was applied at five levels (non-inoculated, inoculated by Pseudomonas putida, Azospirillum lipoferum + Pseudomonas putida, Azotobacter chroococcum + Pseudomonas putida, and Azospirillum lipoferum + Azotobacter chroococcum + Pseudomonas putida), and the salinity stress at six levels: 0, 5, 10, 15, 20, and 50 dS m -1 . The results revealed that Pseudomonas putida showed maximal germination percentage and rate at 20 dS m -1 (18.33% and 0.35 seed per day, respectively). The strongest effect among the treatments was obtained with the treatment combining the given 3 bacteria at 15 dS m -1 salinity stress. This treatment increased the root fresh and dry weights by 31% and 87.5%, respectively (compared to the control). Our results indicate that these bacteria applied on hopbush affected positively both its germination and root growth. The plant compatibility with the three bacteria was found good, and the treatments combining Pseudomonas putida with the other one or two bacteria discussed in this study can be applied in nurseries in order to restore and extend the area of hopbush forests and akin dry stands.

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“…The presence of a 2-mm length radicle was the criterion for germination during the 6-week period of monitoring. The main germination parameters calculated according to the following equations (Rahimi et al, 2016;Yousefi et al, 2017a;Ista Rules, 2009).…”

Section: Effect Of Py-breaking Treatments On Germinationmentioning

confidence: 99%

Effects of dormancy-breaking methods on germination of the water-impermeable seeds of Gleditsia caspica (Fabaceae) and seedling growth

et al. 2019

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Various treatments can be used to break physical dormancy (PY, i.e. water-impermeable seed coat) of legume species, but the effects of these treatments on seedling growth are of great importance in the success of afforestation projects. Our aims were to determine the effects of 20 PY-breaking treatments on (1) germination of Gleditsia caspica (Caspian locust) seeds and (2) seedling growth. Five germination and nine seedling growth and morphological traits were studied. Immersion in concentrated sulfuric acid (98%) for 60 minutes was optimal for all germination traits and for all seedling traits except root length. After seed coat removal or treatment with sulfuric acid (for 45 to 120 minutes), 99–100% of the seeds germinated, but seedling growth traits after 5 months were significantly lower in the former than in the latter treatment. Other treatments (e.g., different periods of exposure to cold water, boiling water, and KNO3) did not significantly increase germination or improve seedling growth. Thus, despite incurring adverse environmental impacts, sulfuric acid treatments have the best potential to break seed dormancy and produce high-quality seedlings (in terms of shoot length, root and shoot mass, root area, leaf number and area and collar diameter) of Caspian locust.

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Effect ofAzospirillum lipoferumandAzotobacter chroococcumon germination and early growth of hopbush shrub (Dodonaea viscosaL.) under salinity stress

Cited by 48 publications

References 25 publications

Evaluation of salt-tolerant Azospirillum spp and its role in improvement of wheat growth parameter

Evaluation of salt-tolerant Azospirillum spp and its role in improvement of wheat growth parameter

Salinity tolerance of Dodonaea viscosa L. inoculated with plant growth-promoting rhizobacteria: assessed based on seed germination and seedling growth characteristics

Effects of dormancy-breaking methods on germination of the water-impermeable seeds of Gleditsia caspica (Fabaceae) and seedling growth

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