Brassinosteroids induce tolerance to water deficit in soybean seedlings: contributions linked to root anatomy and antioxidant enzymes

Ribeiro, Dayane Gomes dos Santos; Silva, Breno Ricardo Serrão da; Lobato, Allan Klynger da Silva

doi:10.1007/s11738-019-2873-2

Cited by 32 publications

(21 citation statements)

References 64 publications

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“…Furthermore, Kapoor et al (2016) reported that EBL alleviated the harmful impact of Cd in radish seedlings (Raphanus sativus) by enhancing the level of antioxidants, such as ascorbic acid, GSH, and tocopherols. In the case of soybean seedlings (Glycine max) (Ribeiro et al 2019) and cowpea (Vigna unguiculata) (Lima and Lobato 2017) under water deficit conditions and Eucalyptus urophylla exposed to salt stress (Oliveira et al 2019), EBL caused increases in SOD, CAT, APX, and POX activities, indicating that BR has a significant impact on the antioxidant system in plants subjected to abiotic stresses. Additionally, EBL reduced the superoxide and H 2 O 2 levels as well as membrane damages (MDA and electrolyte leakage) in soybean under water deficit (Pereira et al 2019).…”

Section: Discussionmentioning

confidence: 99%

24-Epibrassinolide modulates primary metabolites, antioxidants, and phytochelatins in Acutodesmus obliquus exposed to lead stress

Talarek-Karwel

Bajguz

Piotrowska‐Niczyporuk

2019

J Appl Phycol

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Aquatic organisms are exposed to many stressors, e.g., heavy metals. Brassinosteroids, a plant hormone group, can effectively stimulate plants to defend against the negative impact of a heavy metal. The present study was conducted with an aim to find out the influence of 24-epibrassinolide (EBL) on Acutodesmus obliquus treated with 0.01 and 500 μM of lead (Pb) ions during 7 days of cultivation. Pb has a toxic effect on algal cultures because it limits both the growth and development and induces oxidative stress. Simultaneously, 1 μM EBL was involved in protecting algal cells against the toxic effect of Pb. Despite the presence of Pb, EBL significantly increased the number of algal cells and their metabolite content (e.g., proteins, monosaccharides, chlorophylls, carotenes, and xanthophylls). Cultures treated concurrently with EBL and Pb were characterized by a reduction in their content of endogenous Pb, H 2 O 2 , and malondialdehyde. Also, EBL increased the activity of catalase, ascorbate peroxidase, superoxide dismutase, glutathione reductase, and the content of ascorbate and glutathione. EBL increased the phytochelatin synthase activity, thereby enhancing the production of phytochelatins accountable for both binding and detoxification of Pb. These results indicate the influence of EBL on the inhibitory effect of Pb in A. obliquus. These findings help to clarify the role of BRs in the algal adaptation to the prevailing stressful conditions.

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Section: Discussionmentioning

confidence: 99%

24-Epibrassinolide modulates primary metabolites, antioxidants, and phytochelatins in Acutodesmus obliquus exposed to lead stress

Talarek-Karwel

Bajguz

Piotrowska‐Niczyporuk

2019

J Appl Phycol

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“…In addition, increases of RET and RDT are fundamental to avoid water loss through the root surface when the soil water potential becomes more negative, as is an increases of RCD, which is important for better water storage (Hameed et al, 2010). Research conducted by Ribeiro et al (2019) on Glycine max seedlings exposed to water deficit revealed reductions in the anatomical characteristics of roots, such as RET, RDT, RCD, VCD, and RMD. In support of our results, Agami (2013) found improvements in the anatomical structures of Lactuca sativa roots that received SA under water deficit.…”

Section: Exogenous Salicylic Acid Alleviates the Impacts Of Water Deficit On Biomass And Fruit Componentsmentioning

confidence: 99%

Exogenous salicylic acid alleviates the negative impacts on production components, biomass and gas exchange in tomato plants under water deficit improving redox status and anatomical responses

Lobato

Barbosa

Alsahli

et al. 2021

Physiologia Plantarum

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Salicylic acid (SA) is an interesting messenger in plant metabolism that modulates multiple pathways, including the antioxidant defence pathway, and stimulates anatomical structures essential to carbon dioxide fixation during the photosynthetic process. The aim of this research was to determine whether pre-treatment with exogenous SA can alleviate the deleterious effects induced by water deficit on production components, biomass and gas exchange, measuring reactive oxygen species, antioxidant enzymes, variables connected to photosynthetic machinery, anatomical

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Section: Discussionmentioning

confidence: 99%

“…Several studies have shown the beneficial effect of application of BRs in the early stages of development through the mitigation of the negative effects of drought, increases in seed germination rate and seedling survival rate (Kagale et al, 2006;Anuradha & Rao, 2001;Ribeiro, Silva, & Lobato, 2019). Some benefits are associated with the positive effects on leaf and root anatomy of seedlings ( de Oliveira, Lima, & da Silva, 2019;Ribeiro et al, 2019). In fact, the increased thickness of mesophyll and epidermis observed in the concentrations of 0.75 g/L in WR2 in comparison to the other BRs concentration may be related to the maintenance of leaf Although the root anatomy of H. serratifolius was not evaluated in this study, the reduction in water availability led to an increase in the R:S ratio, which may be related to higher biomass investment in belowground growth in order to mitigate the effect of stress.…”

Section: Discussionmentioning

confidence: 99%

Do brassinosteroids alleviate water stress in seedlings of Handroanthus serratifolius?

Vieira

Toro-Herrera

Mendonça

et al. 2021

Annals of Applied Biology

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Limited water availability in reforestation areas can compromise plant growth and development, especially for plants at early stages. In this context, the exogenous application of growth regulators, such as brassinosteroids (BRs), can be used to mitigate the negative effects of water restriction. The aim of this study was to evaluate the effect of the application of BRs (90% brassinolide + a brassinosteroid) on initial growth, gas exchange, leaf water potential and leaf anatomy in yellow Ipê (Handroanthus serratifolius), under water restriction conditions. Throughout the experimental period, plants were maintained in two different water regimes: WR1-plants maintained at 100% of the pot capacity; WR2-plants rehydrated with 50% of the evapotranspiration from the previous day. BRs were applied on three occasions during the experimental period, in five concentrations: C1, 0 g/L (application of distilled water); C2, 0.25 g/L; C3, 0.5 g/L; C4, 0.75 g/L; and C5, 1.00 g/L. The dry mass, root:shoot ratio, water status and leaf anatomy traits were evaluated at the end of the experimental period and were analysed in two-level factorial scheme (2WR Â 5BRs concentrations). The plant height, number of leaves, gas exchange and leaf chlorophyll content were evaluated four times during the experimental period and were analysed in a split-split-plot design (two WR Â five BRs concentrations Â four evaluation times). The differences between the means were evaluated by analysis of variance (ANOVA). Pairs of means were separated using the standard error of the difference between the means (SED) and the Fisher's protected least significant difference test (LSD) at p < .05. In addition, all variables were subjected to regression analysis, being the variables evaluated over time, analysed through a two-stage modelling approach. The results obtained indicate that the water deficit led to reductions in growth and gas exchange parameters, regardless of the exogenous application of the regulator; therefore, higher concentrations (C4 and C5) were the most harmful for the maintenance of metabolic and photosynthetic activity. The exogenous application of BRs in H. serratifolius plants attenuated the effects of water limitation on the leaf water potential, but was not able to mitigate for the negative effects in growth, gas exchange and leaf anatomy.

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Brassinosteroids induce tolerance to water deficit in soybean seedlings: contributions linked to root anatomy and antioxidant enzymes

Cited by 32 publications

References 64 publications

24-Epibrassinolide modulates primary metabolites, antioxidants, and phytochelatins in Acutodesmus obliquus exposed to lead stress

24-Epibrassinolide modulates primary metabolites, antioxidants, and phytochelatins in Acutodesmus obliquus exposed to lead stress

Exogenous salicylic acid alleviates the negative impacts on production components, biomass and gas exchange in tomato plants under water deficit improving redox status and anatomical responses

Do brassinosteroids alleviate water stress in seedlings of Handroanthus serratifolius?

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