Arsenic in Wheat, Maize, and Other Crops

Bianucci, Eliana; Peralta, Juan Manuel; Furlán, Ana; Hernández, Luís E.; Castro, Stella

doi:10.1007/978-981-13-8587-2_9

Cited by 13 publications

(12 citation statements)

References 126 publications

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“…For this reason, the selection of a suitable PGPB for maize requires deep research, since not all bacteria act in the same manner when inoculated with plants exposed to different arsenic concentrations, as observed in our research. In particular, the associative rhizocenosis could not only modify the growth variables of the plant, but also enhance the phytostabilization process serving as a promising biotechnological strategy to avoid metal(oid)s translocation to edible parts (Bianucci et al, 2018; Bianucci et al, 2020; Peralta et al, 2019). Accordingly, crop inoculation should be carefully controlled, especially in maize whose grains and their post‐processing waste are used to produce food for humans or livestock (Gómez‐Sagasti & Marino, 2015).…”

Section: Discussionmentioning

confidence: 99%

“…In plants, As V absorption takes place through phosphate (PO 4 2À ) transporters and its impact on plant cell metabolism has been widely described (Catarecha et al, 2007;Bianucci et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the NADPH oxidase complex significantly contributes to this oxidative response (Mittler et al, 2011). Therefore, oxidative damage can occur on essential biomolecules like lipids, proteins and nucleic acids, leading to oxidative stress that is translated into a plethora of morphological, physiological, biochemical, and molecular alterations (Begum et al, 2016; Bianucci et al, 2017, 2018, 2019, 2020; Peralta et al, 2019, 2020; Shahid et al, 2017; Singh et al, 2017, b).…”

Section: Introductionmentioning

confidence: 99%

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Targeting redox metabolism of the maize‐Azospirillum brasilense interaction exposed to arsenic‐affected groundwater

Peralta

Bianucci

Romero‐Puertas

et al. 2021

Physiologia Plantarum

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Arsenic in groundwater constitutes an agronomic problem due to its potential accumulation in the food chain. Among the agro-sustainable tools to reduce metal(oid)s toxicity, the use of plant growth-promoting bacteria (PGPB) becomes important. For that, and based on previous results in which significant differences of As translocation were observed when inoculating maize plants with Az39 or CD Azospirillum strains, we decided to decipher the redox metabolism changes and the antioxidant system response of maize plants inoculated when exposed to a realistic arsenate (As V ) dose. Results showed that As V caused morphological changes in the root exodermis. Photosynthetic pigments decreased only in CD inoculated plants, while oxidative stress evidence was detected throughout the plant, regardless of the assayed strain. The antioxidant response was strain-differential since only CD inoculated plants showed an increase in superoxide dismutase, glutathione S-transferase (GST), and glutathione reductase (GR) activities while other enzymes showed the same behavior irrespective of the inoculated strain. Gene expression assays reported that only GST23 transcript level was upregulated by arsenate, regardless of the inoculated strain. As V diminished the glutathione (GSH) content of roots inoculated with the Az39 strain, and CD inoculated plants showed a decrease of oxidized GSH (GSSG) levels. We suggest a model in which the antioxidant response of the maizediazotrophs system is modulated by the strain and that GSH plays a central role acting mainly as a substrate for GST. These findings generate knowledge for a suitable PGPB selection, and its scaling to an effective bioinoculant formulation for maize crops exposed to adverse environmental conditions.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Targeting redox metabolism of the maize‐Azospirillum brasilense interaction exposed to arsenic‐affected groundwater

Peralta

Bianucci

Romero‐Puertas

et al. 2021

Physiologia Plantarum

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“…The current experiment was carried out in earthen pots in open conditions at Baha-Uddin Zakariya University, Layyah Campus, Pakistan during winter 2020 to assess the individual and combined effects of boron and biochar to mitigate the adversities of cadmium toxicity in wheat crop. Ten (10) healthy and uniform-sized seeds of the wheat variety Fakhar-e-Bhakhar-2019 were planted in each pot directly and filled with soil to avoid germination losses. After seven days of germination, thinning was done, and only five plants were kept in each pot to maintain optimum plant populations.…”

Section: Experimental Conditions and Designmentioning

confidence: 99%

“…Globally, wheat (Triticum aestivum L.) is the leading cereal crop and is an important staple food. Hence, heavy metal contaminations, particularly that of Cd, create deleterious effects on human health because of their translocation and accumulation in cereal grains [9,10]. Similarly, the accumulation of Cd in plant cells impairs the plant's physiological and metabolic processes due to the possibility of imbalance in nutrient uptake, interrupting energy production [11].…”

Section: Introductionmentioning

confidence: 99%

Alleviation of Cadmium Stress in Wheat through the Combined Application of Boron and Biochar via Regulating Morpho-Physiological and Antioxidant Defense Mechanisms

et al. 2022

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Cadmium (Cd) contamination in soil adversely affects crop productivity, grain quality, and human health. Applications of boron (B) and biochar are known to impart tolerance to crops against abiotic stresses. A pot experiment was performed to assess the effects of the sole and combined application of B and biochar on growth, physiological and antioxidant defense mechanisms, yield, and grain quality of wheat under Cd toxicity-induced stress. The treatments included control (0 mg kg−1 and 0 g kg−1), only Cd (15 mg kg−1), only B (5 g kg−1), only biochar (50 g kg−1), B plus biochar, Cd plus B, Cd plus biochar, and Cd plus B plus biochar, which were applied at the time of sowing and were arranged using completely randomized design (CRD) with five replications. The individual Cd toxicity (15 mg kg 1) significantly reduced chl a, chl b, and chl a+b, as well as primary metabolites (soluble protein, amino acids, total soluble sugar, and phenolic contents), while it increased the activities of enzymatic antioxidants like superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX) in the leaves of wheat. In addition, Cd stress (15 mg kg 1) increased lipid peroxidation in the form of malondialdehyde (MDA), and it enhanced the hydrogen peroxide (H2O2) content, electrolyte leakage (EL), and proline contents in the leaves. Furthermore, Cd (15 mg kg−1) contamination reduced the grain yield and yield-related attributes relative to respective no-Cd treatments. Soil-applied B and biochar improved wheat grain yield by triggering the activities of enzymatic antioxidants. Individual or combined B and biochar applications improved proline contents and reduced H2O2 and MDA contents in plants. The combined application of B and biochar enhanced soluble sugars and total phenolic as compared to the control and Cd-contaminated plants. In conclusion, the combined application of B and biochar was found to be the best soil amendment strategy to improve the yield of wheat under Cd-contaminated soil.

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Application of Nanotechnology in Mitigating Arsenic Stress and Accumulation in Crops: Where We Are and Where We Are Moving Towards

Moulick

Hazra

Mukherjee

et al. 2022

Global Arsenic Hazard

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Arsenic in Wheat, Maize, and Other Crops

Cited by 13 publications

References 126 publications

Targeting redox metabolism of the maize‐Azospirillum brasilense interaction exposed to arsenic‐affected groundwater

Targeting redox metabolism of the maize‐Azospirillum brasilense interaction exposed to arsenic‐affected groundwater

Alleviation of Cadmium Stress in Wheat through the Combined Application of Boron and Biochar via Regulating Morpho-Physiological and Antioxidant Defense Mechanisms

Application of Nanotechnology in Mitigating Arsenic Stress and Accumulation in Crops: Where We Are and Where We Are Moving Towards

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