Brassicas: Responses and Tolerance to Heavy Metal Stress

Qadir, Shaista; Hameed, Asiya; Nisa, NahidaTun; Azooz, M. M.; Wani, Mohd Rafiq; Hasannuzaman, Mirza; Gul, Alvina; Ahmad, Parvaiz

doi:10.1007/978-1-4614-8824-8_1

Cited by 4 publications

(3 citation statements)

References 226 publications

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“…This study investigated the influence of Cd stress on the steroid and triterpenoid metabolism in C. officinalis plants and hairy roots cultures and represents a targeted GC-MS metabolomic approach to study stress-induced metabolic modifications. As it has been frequently reported for toxic metals and metalloids, high Cd concentrations in plants can alter metabolic processes and exert various effects at the physiological, morphological, and molecular levels, e.g., growth inhibition, nutrition imbalance, photosynthesis suppression, chlorosis, and ROS (reactive oxygen species) increase [ 21 , 22 ]. Various reports indicate that the composition of steroids and triterpenoids might be modified under stress conditions; however, detailed studies on such effects exerted after exposure to heavy metals are scarce [ 11 , 23 , 24 ].…”

Section: Discussionmentioning

confidence: 99%

Modulation of Steroid and Triterpenoid Metabolism in Calendula officinalis Plants and Hairy Root Cultures Exposed to Cadmium Stress

Rogowska

Pączkowski

Szakiel

2022

IJMS

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The present study investigated the changes in the content of steroids and triterpenoids in C. officinalis hairy root cultures and plants exposed to cadmium stress. The observed effects included the content and composition of analyzed groups of compounds, particularly the proportions among individual sterols (e.g., stigmasterol-to-sitosterol ratio), their ester and glycoside conjugates. The total sterol content increased in roots (by 30%) and hairy root culture (by 44%), whereas it decreased in shoots (by 15%); moreover, these effects were inversely correlated with Cd-induced growth suppression. Metabolic alterations of sterols and their forms seemed to play a greater role in the response to Cd stress in roots than in shoots. The symptoms of the competition between general metabolites (sterols) and specialized metabolites (triterpenoids) were also observed, i.e., the increase of the sterol biosynthesis parallel to the decrease of the triterpenoid content in C. officinalis plant roots and hairy root culture, and the inverse phenomenon in shoots. The similarity of the metabolic modifications observed in the present study on C. officinalis plant roots and hairy roots confirmed the possibility of application of plant in vitro cultures in initial studies for physiological research on plant response to environmental stresses.

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Section: Discussionmentioning

confidence: 99%

Modulation of Steroid and Triterpenoid Metabolism in Calendula officinalis Plants and Hairy Root Cultures Exposed to Cadmium Stress

Rogowska

Pączkowski

Szakiel

2022

IJMS

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“…As we found that the growth of B. napus was adversely impacted by higher amounts of Hg (8 ppm) relative to the corresponding controls. Previously, the tolerance of seedling growth was well explained in cotton by Iqbal et al [ 69 ] and barley by Qadir et al [ 70 ]. Heavy metal stress affects several plant species [ 71 ]; some plant species can bear heavy metal stress.…”

Section: Resultsmentioning

confidence: 99%

Mitigation effect of alpha-tocopherol and thermo-priming in Brassica napus L. under induced mercuric chloride stress

Amin,

AL-Huqail,

Ullah

et al. 2024

BMC Plant Biol

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Soil pollution with heavy metals has grown to be a big hassle, leading to the loss in farming production particularly in developing countries like Pakistan, where no proper channel is present for irrigation and extraction of these toxic heavy metals. The present study aims to ameliorate the damages caused by heavy metal ions (Hg-Mercury) on rapeseed (Brassica napus L.) via a growth regulator (α-tocopherol 150 mg/L) and thermopriming technique at 4 °C and 50 °C to maintain plant agronomical and physiological characteristics. In pot experiments, we designed total of 11 treatments viz.( T0 (control), T1 (Hg4ppm), T2 (Hg8ppm), T3 (Hg4ppm + 4 °C), T4 (Hg4ppm + 4 °C + tocopherol (150 m/L)), T5 (Hg4ppm + 50 °C), T6 (Hg4ppm + 50 °C + tocopherol (150 mg/L)), T7 (Hg8ppm + 4 °C), T8 (Hg8ppm + 4 °C + tocopherol (150 mg/L)), T9 (Hg8ppm + 50 °C), T10 (Hg8ppm + 50 °C + tocopherol (150 mg/L) the results revealed that chlorophyll content at p < 0.05 with growth regulator and antioxidant enzymes such as catalase, peroxidase, and malondialdehyde enhanced up to the maximum level at T5 = Hg4ppm + 50 °C (50 °C thermopriming under 4 ppm mercuric chloride stress), suggesting that high temperature initiate the antioxidant system to reduce photosystem damage. However, protein, proline, superoxide dismutase at p < 0.05, and carotenoid, soluble sugar, and ascorbate peroxidase were increased non-significantly (p > 0.05) 50 °C thermopriming under 8 ppm high mercuric chloride stress (T9 = Hg8ppm + 50 °C) representing the tolerance of selected specie by synthesizing osmolytes to resist oxidation mechanism. Furthermore, reduction in % MC (moisture content) is easily improved with foliar application of α-tocopherol and 50 °C thermopriming and 4 ppm heavy metal stress at T6 = Hg4ppm + 50 °C + α-tocopherol (150 mg/L), with a remarkable increase in plant vigor and germination energy. It has resulted that the inhibitory effect of only lower concentration (4 ppm) of heavy metal stress was ameliorated by exogenous application of α-tocopherol and thermopriming technique by synthesizing high levels of proline and antioxidant activities in maintaining seedling growth and development on heavy metal contaminated soil.

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“…Phytoremediation is being extensively promoted as a means to remediate environmental contaminants such as heavy metals ( Glick 2003 ). Moreover, rhizoremediation, which involves plants as well as their rhizospheric microbes, either naturally occurring or introduced, also helps to degrade or lower the levels of contaminants and promote normal plant growth ( Gerhardt et al 2009 ; Qadir et al 2014 ).…”

Section: Responses Of Transgenic Plants To Different Stressesmentioning

confidence: 99%

Plant responses to environmental stresses—from gene to biotechnology

et al. 2017

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Supplying food to an ever-increasing population is one of the biggest challenges worldwide. Environmental stresses make this situation even graver. New technological approaches are imperative. Recently, genetic engineering has contributed enormously to the development of genetically modified varieties of different crops such as cotton, maize, rice, canola and soybean. Identification of stress-responsive genes and their subsequent introgression or overexpression within sensitive crop species are now being widely carried out by plant scientists. In this review, the role of biotechnology in association with genomics and its successes, endeavours, prospects and challenges in developing stress-tolerant crop cultivars are discussed.

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Brassicas: Responses and Tolerance to Heavy Metal Stress

Cited by 4 publications

References 226 publications

Modulation of Steroid and Triterpenoid Metabolism in Calendula officinalis Plants and Hairy Root Cultures Exposed to Cadmium Stress

Modulation of Steroid and Triterpenoid Metabolism in Calendula officinalis Plants and Hairy Root Cultures Exposed to Cadmium Stress

Mitigation effect of alpha-tocopherol and thermo-priming in Brassica napus L. under induced mercuric chloride stress

Plant responses to environmental stresses—from gene to biotechnology

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