Plant Growth-Promoting Bacteria: Biotic Strategy to Cope with Abiotic Stresses in Wheat

Lastochkina, Oksana; Aliniaeifard, Sasan; Seifikalhor, Maryam; Yuldashev, Ruslan; Пусенкова, Л. И.; Гарипова, С. Р.

doi:10.1007/978-981-13-6883-7_23

Cited by 35 publications

(76 citation statements)

References 173 publications

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“…Triticum aestivum L. (wheat) is one of the most widespread valuable cereal food crops [ 1 ]. Abiotic stresses leading to drought significantly reduce wheat growth and yield [ 1 , 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

“…Triticum aestivum L. (wheat) is one of the most widespread valuable cereal food crops [ 1 ]. Abiotic stresses leading to drought significantly reduce wheat growth and yield [ 1 , 2 , 3 ]. Drought affects all elements of plant metabolism by limiting germination, photosynthesis, water and nutrition uptake, increasing transpiration, respiration, oxidative, and osmotic damage to membranes with the cumulative effect of plant growth inhibition [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…At present, positive effects of PGPB on plant growth and development under different abiotic stresses (drought, extreme temperatures, salinity, UV radiation, etc.) have been observed in numerous plants including wheat [ 1 , 2 , 7 , 10 , 11 ]. Among PGPB, special attention is given to endophytic bacteria, in particular Bacillus subtilis , which colonizes the internal host tissues and positively influence plant metabolism from inside during the entire process of ontogenesis [ 1 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

“…The underlying mechanisms of interaction between endophytic bacteria and host plants under abiotic stresses are mainly unknown. According to present knowledge, the growth-stimulating and anti-stress effects of PGPB including B. subtilis on plants are based on multiple mechanisms [ 1 , 8 , 9 , 10 ]. The beneficial plant-endophyte associations may improve plant growth and development through direct and indirect mechanisms: by enhancing mineral uptake, diluting pathogen access through biological competition, producing a variety of bioactive compounds (auxins, biosurfactants, siderophores, enzymes, etc.…”

Section: Introductionmentioning

confidence: 99%

“…The beneficial plant-endophyte associations may improve plant growth and development through direct and indirect mechanisms: by enhancing mineral uptake, diluting pathogen access through biological competition, producing a variety of bioactive compounds (auxins, biosurfactants, siderophores, enzymes, etc. ), and regulating the level of some important plant hormones including salicylic acid (SA), which plays a key role in augmenting tolerance response under abiotic stresses [ 1 , 13 , 14 , 15 , 16 , 17 ]. However, it is still far from clear how endophytic bacteria regulate the defense systems of host plants and increase plant stress tolerance to drought.…”

Section: Introductionmentioning

confidence: 99%

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Seed Priming with Endophytic Bacillus subtilis Modulates Physiological Responses of Two Different Triticum aestivum L. Cultivars under Drought Stress

Lastochkina

Garshina

Ivanov

et al. 2020

Plants

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The protective effects against drought stress of the endophytic bacterium Bacillus subtilis 10-4 were measured by studying the priming response in two wheat (Triticum aestivum L.)—Ekada70 (E70) and Salavat Yulaev (SY)—lines, tolerant and susceptible to drought, respectively. B. subtilis 10-4 improved germination and growth parameters under normal conditions in both cultivars with the most pronounced effect observed in cv. E70. Under drought conditions, B. subtilis 10-4 significantly ameliorated the negative impact of stress on germination and growth of cv. E70, but had no protective effect on cv. SY. B. subtilis 10-4 induced an increase in the levels of photosynthetic chlorophyll (Chl) a, Chl b, and carotenoids (Car) in the leaves of cv. E70, both under normal and drought conditions. In cv. SY plants, bacterial inoculation decreased the contents of Chl a, Chl b, and Car under normal conditions, but pigment content were almost recovered under drought stress. B. subtilis 10-4 increased water holding capacity (WHC) of cv. E70 (but did not affect this parameter in cv. SY) and prevented the stress-induced decline in WHC in both cultivars. Notably, B. subtilis 10-4 increased endogenous salicylic acid (SA) concentration in both cultivars, especially in cv. E70. Moreover, B. subtilis 10-4 reduced drought-induced endogenous SA accumulation, which was correlated with the influence of endophyte on growth, indicating a possible involvement of endogenous SA in the implementation of B. subtilis-mediated effects in both cultivars. Overall, B. subtilis 10-4 inoculation was found to increase drought tolerance in seedlings of both cultivars, as evidenced by decreased lipid peroxidation, proline content, and electrolyte leakage from tissues of wheat seedlings primed with B. subtilis 10-4 under drought conditions.

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“…Triticum aestivum L. (wheat) is one of the most widespread valuable cereal food crops [ 1 ]. Abiotic stresses leading to drought significantly reduce wheat growth and yield [ 1 , 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%