Salt stress mitigation in Lathyrus cicera by combining different microbial inocula

Gritli, Takwa; Boubakri, Hatem; Essahibi, Abdellatif; Hsouna, Jihed; Ilahi, Houda; Didier, Reinhardt; Mnasri, Bacem

doi:10.1007/s12298-022-01205-4

Cited by 9 publications

(2 citation statements)

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“…Gupta et al ( 2021b ) recently demonstrated in a pot experiment that Bacillus subtilis RhStr_71, Bacillus safensis RhStr_223, and Bacillus cereus RhStr_JH5 improved pea plant growth, increasing the abundance of osmoprotectant and antioxidant compounds and reducing oxidative stress level due to salt. In addition, combination of PGPB and mycorrhizal fungi has been documented to mitigate the negative salt effects, enhancing Lathyrus cicero plant growth (Gritli et al 2022 ).…”

Section: Discussionmentioning

confidence: 99%

“…It was observed that PGPB may improve plant development in a way that depends on the bacterial strain and plant genotype, as different plant genotypes may differentially react to the same microbial strain (Wei and Jousset 2017 ). Several reports have shown the potential of PGPB in improving productivity of many legume plants, including peanuts (Sharma et al 2016 ), Sulla carnosa (Hidri et al 2016 ) and Lathyrus cicera (Gritli et al 2022 ) under salt stress conditions. Inoculation with Planomicrobium sp.…”

Section: Introductionmentioning

confidence: 99%

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Impact of two Erwinia sp. on the response of diverse Pisum sativum genotypes under salt stress

Ilahi,

Zampieri,

Sbrana

et al. 2024

Physiol Mol Biol Plants

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Currently, salinization is impacting more than 50% of arable land, posing a significant challenge to agriculture globally. Salt causes osmotic and ionic stress, determining cell dehydration, ion homeostasis, and metabolic process alteration, thus negatively influencing plant development. A promising sustainable approach to improve plant tolerance to salinity is the use of plant growth-promoting bacteria (PGPB). This work aimed to characterize two bacterial strains, that have been isolated from pea root nodules, initially called PG1 and PG2, and assess their impact on growth, physiological, biochemical, and molecular parameters in three pea genotypes (Merveille de Kelvedon, Lincoln, Meraviglia d’Italia) under salinity. Bacterial strains were molecularly identified, and characterized by in vitro assays to evaluate the plant growth promoting abilities. Both strains were identified as Erwinia sp., demonstrating in vitro biosynthesis of IAA, ACC deaminase activity, as well as the capacity to grow in presence of NaCl and PEG. Considering the inoculation of plants, pea biometric parameters were unaffected by the presence of the bacteria, independently by the considered genotype. Conversely, the three pea genotypes differed in the regulation of antioxidant genes coding for catalase (PsCAT) and superoxide dismutase (PsSOD). The highest proline levels (212.88 μmol g−1) were detected in salt-stressed Lincoln plants inoculated with PG1, along with the up-regulation of PsSOD and PsCAT. Conversely, PG2 inoculation resulted in the lowest proline levels that were observed in Lincoln and Meraviglia d’Italia (35.39 and 23.67 μmol g−1, respectively). Overall, this study highlights the potential of these two strains as beneficial plant growth-promoting bacteria in saline environments, showing that their inoculation modulates responses in pea plants, affecting antioxidant gene expression and proline accumulation.

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Section: Discussionmentioning

confidence: 99%