Screening and evaluation of indigenous halo-tolerant microbes for salt stress alleviation in celery (Apium graveolens)

Rehman, Shafiq Ur; Afzal, Wajeeha; Anjum, Tehmina; Choudhry, Hassan Javed; Ahmad, Sajid Rashid; Aslam, Mehmood

doi:10.25252/se/19/91795

Cited by 1 publication

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“…Our results showed that chlorophyll b content was higher in heat stress as compared to normal conditions in Riogrande. Increased chlorophyll contents could be due to higher photosynthetic leaf area that results from inoculation with PGPR, which was reduced for un-inoculated plants exposed to heat stress compared to un-inoculated plants grown under normal conditions [80,81]. Furthermore, our current results are strongly supported by the findings of [82], as they reported that application of P. putida enhanced the chlorophyll content in the shoots of canola plant.…”

Section: Discussionsupporting

confidence: 87%

Mitigation of Heat Stress in Solanum lycopersicum L. by ACC-deaminase and Exopolysaccharide Producing Bacillus cereus: Effects on Biochemical Profiling

et al. 2020

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Soil microorganisms might be assessed for their capabilities of plant growth promotion in order to identify heat tolerant strategies for crop production. The planned study was conducted to determine the potential of heat tolerant plant growth promoting rhizobacteria (PGPR) in mitigating heat stress effects in tomato. Bacillus cereus was evaluated for plant growth promoting activities and assessed for 1-aminocyclopropane-1-carboxylate (ACC-deaminase) (0.76–C0.9 μM/mg protein/h), and exopolysaccharide (0.66–C0.91 mg/mL) under normal and heat stressed conditions. Plant growth regulators were evaluated through High Performance Liquid Chromatography. Bacterial inoculation effects on important physiological and biochemical parameters were evaluated under normal and heat stressed conditions in growth chamber. The morphological-physiological traits significantly revealed drastic effects on both of un-inoculated tomato varieties under heat stress conditions. Bacterial augmentation significantly promoted shoot, root length, leaf surface area, fresh and dry weight. Heat stress enhanced extracellular polymeric substances (EPS) production and cleavage of ACC into a-ketobutyrate and ammonia due to ACC-deaminase producing bacteria that significantly reduced the adverse effects of heat on tomato growth. In conclusion, the applied plant growth promoting rhizobacteria (PGPR) bacterial strain proved as potential candidate for improving tomato crop growing under heat stressed conditions. However, it is highly suggested to validate the current results by conducting field trials.

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Section: Discussionsupporting

confidence: 87%