Photosynthetic responses of durum wheat to chemical/microbiological fertilization management under salt and drought stresses

Khanghahi, Mohammad Yaghoubi; Leoni, Beniamino; Crecchio, Carmine

doi:10.1007/s11738-021-03289-z

Cited by 26 publications

(35 citation statements)

References 54 publications

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“…As reported earlier (Yaghoubi Khanghahi et al, 2021a), fertilisation treatments increased grain yield under both non‐stress and stress conditions. The grain yield reached the highest value in non‐stress, drought, and salinity when treated with respectively BC + ½CF (1.05 g plant −1 ), BC (0.46 g plant −1 ), and BC (0.61 g plant −1 ).…”

Section: Resultssupporting

confidence: 82%

“…As fully described by Yaghoubi Khanghahi et al (2021a), durum wheat seeds (var. Furio Camillo) and the clay loam soil were collected for the greenhouse experiment from the same durum wheat fields where the PGPBs were isolated.…”

Section: Methodsmentioning

confidence: 95%

“…As a part of this project, we isolated several beneficial bacterial strains from durum wheat fields at Lavello (Southern Italy, Basilicata region, located at 41°03′N, 15°42′E) and identified the four most beneficial among them as Acinetobacter pittii , Acinetobacter oleivorans , Acinetobacter calcoaceticus , and Comamonas testosteroni (Yaghoubi Khanghahi et al, 2021c). These bacterial strains showed a promising ability, not only in transforming the insoluble complexes of phosphate, potassium, and zinc to soluble forms and biological fixing of nitrogen in vitro conditions, respectively (Yaghoubi Khanghahi et al, 2021c), but also in improving some agronomic and physiological parameters of durum wheat plants in a greenhouse experiment (Yaghoubi Khanghahi et al, 2021a). Also, it was determined how the application of these beneficial bacterial strains, as bio‐inoculant, shaped the rhizosphere and root‐associated bacterial communities under stress (Yaghoubi Khanghahi et al, 2021b).…”

Section: Introductionmentioning

confidence: 99%

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Biofertilisation with a consortium of growth‐promoting bacterial strains improves the nutritional status of wheat grain under control, drought, and salinity stress conditions

Khanghahi

AbdElgawad

Verbruggen

et al. 2022

Physiologia Plantarum

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We investigated the effect of plant growth‐promoting bacterial strains (PGPB) as biofertilisers on the grain metabolic composition of durum wheat (Triticum durum Desf.). To this aim, we conducted a greenhouse experiment where we grew durum wheat plants supplied with a biofertiliser consortium of four PGPB and/or chemical fertiliser (containing nitrogen, phosphorus, potassium, and zinc), under non‐stress, drought (at 40% field capacity), or salinity (150 mM NaCl) conditions. Nutrient accumulations in the grain were increased in plants treated with the biofertiliser consortium, alone or with a half dose of chemical fertilisers, compared to those in no fertilisation treatment. A clear benefit of biofertiliser application in the improvement of protein, soluble sugar, starch, and lipid contents in the grains was observed in comparison with untreated controls, especially under stress conditions. The most striking observation was the absence of significant differences between biofertiliser and chemical fertiliser treatments for most parameters. Moreover, the overall response to the biofertiliser consortium was accompanied by greater changes in amino acids, organic acids, and fatty acid profiles. In conclusion, PGPB improved the metabolic and nutrient status of durum wheat grains to a similar extent as chemical fertilisers, particularly under stress conditions, demonstrating the value of PGPB as a sustainable fertilisation treatment.

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Section: Resultssupporting

confidence: 82%

Section: Methodsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

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Biofertilisation with a consortium of growth‐promoting bacterial strains improves the nutritional status of wheat grain under control, drought, and salinity stress conditions

Khanghahi

AbdElgawad

Verbruggen

et al. 2022

Physiologia Plantarum

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“…Similarly, putrescine alleviated the salt-induced damages and increased the level of glutathione and carotenoids in Brassica juncea [29]. Mohammad et al, [42] had reported increased carotenoid content in durum wheat plants when inoculated with plant growthpromoting bacteria (PGPB) under mild salt stress conditions and protect photosynthetic reaction centres.…”

Section: Biochemical Response Of Non-enzymatic Antioxidant System During Salt Stress and Spermine Treatmentmentioning

confidence: 99%

Exogenous Spermine Mitigate Adversities of Salinity Induced Oxidative Stress through Antioxidant Metabolites in Wheat

Raghavendra¹,

Rao²,

Kumar³

et al. 2021

IJPSS

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Change in climatic scenarios due to global warming is characterized by extreme climate variability, land and water degradation which resulted in water scarcity. Accumulation of salts at the surface and sub-surface layers of soils affect crop production of major cereals which is a constraint in sustainable food production. Salinity is a major challenge to tackle wheat cultivation and harness productivity in arid and semi-arid regions of India. In the present investigation, mitigation of salinity induced oxidative stress through exogenous application of spermine (Spm) in four wheat genotypes was studied in relation to antioxidant metabolites. The levels of O2.- increased with increasing levels of salinity in wheat flag leaves. DBW 88 showed the levels of O2.- of 11.75 nmol g-1 FW and 15.74 nmol g-1 FW (at 8 dSm-1 and 12 dSm-1 respectively) at 21 Days After Sowing (DAS) and application of Spm decreased the O2.- content under control and saline stressed conditions at 8 dSm-1 and 12 dSm-1. Hydrogen peroxide content was increased with increasing levels of salinity in all the wheat varieties at 21 DAS. However, the increase was more in the case of DBW 88 when compared with HD 3086. Treatment of Spm decreased the H2O2 content when compared with control and saline stressed wheat varieties. The malondialdehyde (MDA) content was increased with increasing levels of salinity at 21 DAS. The highest increase in MDA content was seen in DBW 88 whereas the lowest increase was found in Kharchia 65. Application of Spm decreased the MDA content under control at both levels of salinity treated wheat varieties. The carotenoid content decreased with increasing levels of salinity in all four wheat varieties. However, the decrease was more in DBW 88 when compared with other varieties viz. HD 3086, Kharchia 65 and KRL 210 at 21 DAS. Exogenous Spm increased the carotenoids content in all four wheat varieties irrespective of the salinity. The leaves of Kharchia 65 and KRL 210 had higher levels of ascorbic acid as compared to that of DBW 88 and HD 3086. Increased content of carotenoid was observed in Spm-treated wheat. Exogenous application of Spm increased the ascorbic acid content in control at both levels of salt stress. The glutathione content increased with an increase in salinity treatment in all the varieties however, a higher increase was observed in Kharchia 65. Exogenous Spm increased the glutathione content in all the varieties irrespective of salinity stress. The results presented in the study indicated that the exogenous application of Spm improved their tolerance levels under salinity.

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“…Groups of rhizosphere microorganisms and their interactions are the subject of research aimed at determining their influence on the growth, yield, and protection of plants [ 6 , 7 , 8 ]. These organisms colonize the roots of plants and induce growth and immune processes in them, which can contribute to the neutralization or minimization of the impact of stresses caused by, for example, water deficiency [ 9 , 10 , 11 , 12 ], high temperature [ 13 , 14 ], low temperature [ 15 ], salinity [ 16 , 17 ], soil contamination with heavy metals [ 18 , 19 ], or biotic factors (pathogens) [ 20 , 21 ]. Among free-living bacteria are Plant Growth Promoting Rhizobacteria (PGPR), which have been utilized for improving water and nutrient uptake and abiotic and biotic stress tolerance [ 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Rhizosphere Bacteria on Strawberry Plants (Fragaria × ananassa Duch.) under Water Deficit

Paliwoda

Mikiciuk

et al. 2022

IJMS

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Due to the observed climate warming, water deficiency in soil is currently one of the most important stressors limiting the size and quality of plant crops. Drought stress causes a number of morphological, physiological, and biochemical changes in plants, limiting their growth, development, and yield. Innovative methods of inducing resistance and protecting plants against stressors include the inoculation of crops with beneficial microorganisms isolated from the rhizosphere of the plant species to which they are to be applied. The aim of the present study was to evaluate 12 different strains of rhizosphere bacteria of the genera Pantoea, Bacillus, Azotobacter, and Pseudomonas by using them to inoculate strawberry plants and assessing their impact on mitigating the negative effects of drought stress. Bacterial populations were assessed by estimates of their size based on bacterial counts in the growth substrate and with bioassays for plant growth-promoting traits. The physiological condition of strawberry plants was determined based on the parameters of chlorophyll fluorescence. The usefulness of the test methods used to assess the influence of plant inoculation with rhizosphere bacteria on the response of plants growing under water deficit was also evaluated. A two-factor experiment was performed in a complete randomization design. The first experimental factor was the inoculation of plant roots with rhizosphere bacteria. The second experimental factor was the different moisture content of the growth substrate. The water potential was maintained at −10 to −15 kPa under control conditions, and at −40 to −45 kPa under the conditions of water deficit in the substrate. The tests on strawberry plants showed that the highest sensitivity to water deficiency, and thus the greatest usefulness for characterizing water stress, was demonstrated by the following indices of chlorophyll “a” fluorescence: FM, FV, FV/FM, PI, and Area. Based on the assessment of the condition of the photosynthetic apparatus and the analysis of chlorophyll “a” fluorescence indices, including hierarchical cluster analysis, the following strains of rhizosphere bacteria were found to have favorable effects on strawberry plants under water deficit: the Bacillus sp. strains DLGB2 and DKB26 and the Pantoea sp. strains DKB63, DKB70, DKB68, DKB64, and DKB65. In the tests, these strains of Bacillus sp. exhibited a common trait—the ability to produce siderophores, while those of Pantoea sp. were notable for phosphate mobilization and ACCD activity.

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Photosynthetic responses of durum wheat to chemical/microbiological fertilization management under salt and drought stresses

Cited by 26 publications

References 54 publications

Biofertilisation with a consortium of growth‐promoting bacterial strains improves the nutritional status of wheat grain under control, drought, and salinity stress conditions

Biofertilisation with a consortium of growth‐promoting bacterial strains improves the nutritional status of wheat grain under control, drought, and salinity stress conditions

Exogenous Spermine Mitigate Adversities of Salinity Induced Oxidative Stress through Antioxidant Metabolites in Wheat

Effects of Rhizosphere Bacteria on Strawberry Plants (Fragaria × ananassa Duch.) under Water Deficit

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