Mitigation of drought stress in spinach using individual and combined applications of salicylic acid and potassium

Gilani, Munaza; Danish, Subhan; Ahmed, Niaz; Rahi, Ashfaq Ahmad; Akrem, Ahmed; Younis, Uzma; Irshad, Inam; Iqbal, Rana Khalid

doi:10.30848/pjb2020-5(18)

Cited by 16 publications

(15 citation statements)

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“…According to Danish and Zafar-ul-Hye [ 34 ], inoculation of PGPR increased the uptake of nutrients and water in plants. The improvement in potassium [ 51 ] and water uptake played an efficacious role in the enhancement of fresh weigh and yield of crops. Application of recommended NPK fertilizer + A. fabrum significantly immobilized Cd in soil at low and high levels of Cd.…”

Section: Discussionmentioning

confidence: 99%

Effect of Cadmium-Tolerant Rhizobacteria on Growth Attributes and Chlorophyll Contents of Bitter Gourd under Cadmium Toxicity

Zafar-ul-Hye

Naeem

Danish

et al. 2020

Plants

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Cadmium (Cd) is one of the heavy metals that negatively affects the growth of plants. High solubilization in water leads Cd to enter into plants quite easily, thus decreasing seed germination, photosynthesis, and transpiration. It also shows an antagonistic effect with many of the plants’ nutrients like Mn, Ca, K, Mg and Fe. Nowadays, inoculation of plants with ACC deaminase (ACCD) rhizobacteria to mitigate Cd’s adverse effects has drawn the attention of environmental microbiologists. The rhizobacteria secrete organic compounds that can immobilize Cd in soil. Therefore, this study was accomplished to investigate the effect of ACCD plant growth promoting rhizobacteria (PGPR) on the bitter gourd under Cd stress. There were six treatments consisting of two ACCD PGPR (Stenotrophomonas maltophilia and Agrobacterium fabrum) strains and inorganic fertilizers at two levels of Cd, i.e., 2 (Cd2) and 5 mg kg−1 soil (Cd5). The results showed A. fabrum with the recommended NPK fertilizer (RNPKF) significantly increased the vine length (48 and 55%), fresh weight (24 and 22%), and contents of chlorophyll a (79 and 50%), chlorophyll b (30 and 33%) and total chlorophyll (61 and 36%), over control at the two Cd levels i.e., Cd2 and Cd5, respectively. In conclusion, the recommended NPK fertilizer + A. fabrum combination is a very effective treatment with which to immobilize Cd in soil for the improvement of bitter gourd growth.

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Section: Discussionmentioning

confidence: 99%

Effect of Cadmium-Tolerant Rhizobacteria on Growth Attributes and Chlorophyll Contents of Bitter Gourd under Cadmium Toxicity

Zafar-ul-Hye

Naeem

Danish

et al. 2020

Plants

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“…Among all abiotic stresses (heavy metals [1][2][3][4][5][6], salinity [7], nutrient deficiency [8,9]), drought is the most severe stress [10] that decreases crop production in various world climatic regions [11,12]. A drastic reduction (50%) in the yield of crops occurs annually due to soil water deficiencies [11,13]. Dry winds, high light intensity, shifts in monsoon patterns, physiological drought conditions (salinity stress) and temperature dynamics are reasons for water scarcity in any region.…”

Section: Introductionmentioning

confidence: 99%

“…Dry winds, high light intensity, shifts in monsoon patterns, physiological drought conditions (salinity stress) and temperature dynamics are reasons for water scarcity in any region. Such factors result in extensive evapotranspiration, water holding capacity of the rhizosphere and uneven or low rainfall patterns [11,13]. Continuous greenhouse gas emissions also increase earth temperature by trapping heat [14].…”

Section: Introductionmentioning

confidence: 99%

Combined Use of Endophytic Bacteria and Pre-Sowing Treatment of Thiamine Mitigates the Adverse Effects of Drought Stress in Wheat (Triticum aestivum L.) Cultivars

et al. 2021

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On a global scale, wheat (Triticum aestivum L.) is a widely cultivated crop among all cereals. Increasing pollution, population expansion, socio-economic development, ecological and industrial policies have induced changes in overall climatic attributes. The impact of these factors on agriculture dynamics has led to various biotic and abiotic stresses, i.e., significant decline in rainfall, directly affect sustainable agriculture. Increasing abiotic stresses have a direct negative effect on worldwide crop production. More promising and improved stress-tolerant strategies that can help to feed the increasing global population are required. A laboratory experiment was performed on two of the latest wheat (Triticum aestivum L.) genotypes (Akbar 2019 and Anaj 2017) from Punjab Pakistan, to determine the influence of seed priming with thiamine (vitamin B1) along with soil inoculation of Endophytic bacterial strains to mitigate the effects of drought stress at different degrees. Results revealed that thiamine helped in the remote germination; seeds of Anaj 2017 germinated within 16 hours while Akbar 2019 germinated after one day. Overall growth parameters of Anaj 2017 were negatively affected even under higher levels of drought stress, while Akbar 2019 proved to be a susceptible cultivar. A significant increase in RFW (54%), SFW (85%), RDW (69%), SDW (67%) and TChl (136%) validated the effectiveness of D-T3 compared to C-T0 in drought stress. Significant decrease in MDA, EL and H2O2 signified the imperative function of D-T3 over C-T0 under drought stress. In conclusion and recommendation, we declare that farmers can get better wheat growth under drought stress by application of D-T3 over C-T0.

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“…It has been observed that drought stress can reduce 65% biomass of spinach by decreasing fresh weight [8]. This drastic reduction in fresh biomass is mainly due to the disruption of plant's photosynthetic capacity by limiting its physiological and biochemical attributes under the water deficit environment [6,9].…”

Section: Introductionmentioning

confidence: 99%

“…It is also involved in the defense mechanism against various abiotic and biotic stresses [11]. During drought, stressed plants uptake more potassium to regulate the internal mechanisms and ameliorate water deficiency [6,9,[12][13][14][15]. The use of K as a compatible solute can osmo-regulate the cellular environments in water stress conditions.…”

Section: Introductionmentioning

confidence: 99%

Drought Stress Alleviation by Potassium-Nitrate-Containing Chitosan/Montmorillonite Microparticles Confers Changes in Spinacia oleracea L.

et al. 2021

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Drought and low amounts of mineral nutrients in the soil are the two leading global constraints in arid and semiarid regions. Their detrimental effects on soils and crops can be alleviated by applying controlled release and biodegradable fertilizers to better and sustain the crops. On a global scale, spinach (Spinacia oleracea L.) is an essential leafy green vegetable that is biologically considered a reliable source of essential nutrients and minerals for human health. A comprehensive approach is needed to manage water stress to mitigate the impacts of stress-caused damage and to examine this for better and increased plant production. An experiment was conducted using potassium-nitrate-containing chitosan/montmorillonite microparticles (150 mg) under mild and severe drought stress (MDS: 50% and SDS: 35% FC, respectively). The treatments include control (no KNO3 and 70% FC as normal irrigation (NI)), KNO3 + NI, 50% FC as mild drought stress (MDS), KNO3 + MDS, 35% FC as severe drought stress (SDS) and KNO3 + SDS. Results revealed that drought stress decreased all studied physiological parameters and increased oxidative stress indicators in spinach. Applying KN significantly increased root (122%) and shoot length (4%), shoot fresh weight (32%) and shoot dry weight (71%), chlorophyll a (88%), carotenoids (39%), total soluble proteins (50%), soluble sugars (51%), potassium (80%), and phosphorous (32%) concentrations over No KN at severe drought. While stress indicators, like glycine betaine, malondialdehyde, hydrogen peroxide, electrolyte leakage, peroxidase, superoxide dismutase, and ascorbic acid levels, were increased in stress. Treatment KN was proved efficient and effective in improving spinach physiological status in both MDS and SDS.

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Mitigation of drought stress in spinach using individual and combined applications of salicylic acid and potassium

Cited by 16 publications

References 0 publications

Effect of Cadmium-Tolerant Rhizobacteria on Growth Attributes and Chlorophyll Contents of Bitter Gourd under Cadmium Toxicity

Effect of Cadmium-Tolerant Rhizobacteria on Growth Attributes and Chlorophyll Contents of Bitter Gourd under Cadmium Toxicity

Combined Use of Endophytic Bacteria and Pre-Sowing Treatment of Thiamine Mitigates the Adverse Effects of Drought Stress in Wheat (Triticum aestivum L.) Cultivars

Drought Stress Alleviation by Potassium-Nitrate-Containing Chitosan/Montmorillonite Microparticles Confers Changes in Spinacia oleracea L.

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