Alleviation of Cadmium Stress in Wheat by Polyamines

Rady, Mostafa M.; Ahmed, Safia M.A.; El-Yazal, Mohamed A. Seif; Taie, Hanan A.A.

doi:10.1016/b978-0-12-815794-7.00017-5

Cited by 8 publications

(9 citation statements)

References 88 publications

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“…RWC is considered to be one of the prospective stress indicators 64 , 65 . Exposure of chickpea plants to Cd resulted in decreased RWC in the present investigation.…”

Section: Discussionmentioning

confidence: 99%

Jasmonic acid (JA) and gibberellic acid (GA3) mitigated Cd-toxicity in chickpea plants through restricted cd uptake and oxidative stress management

Ahmad

Raja²,

Ashraf

et al. 2021

Sci Rep

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Cadmium stress is one of the chief environmental cues that can substantially reduce plant growth. In the present research, we studied the effect of jasmonic acid (JA) and gibberellic acid (GA3) applied individually and/or in combination to chickpea (Cicer arietinum) plants exposed to 150 µM cadmium sulphate. Cadmium stress resulted in reduced plant growth and pigment contents. Moreover, chickpea plants under cadmium contamination displayed higher levels of electrolytic leakage, H2O2, and malonaldehyde, as well as lower relative water content. Plants primed with JA (1 nM) and those foliar-fed with GA3 (10–6 M) showed improved metal tolerance by reducing the accumulation of reactive oxygen species, malonaldehyde and electrolytic leakage, and increasing relative water content. . Osmoprotectants like proline and glycinebetaine increased under cadmium contamination. Additionally, the enzymatic activities and non-enzymatic antioxidant levels increased markedly under Cd stress, but application of JA as well as of GA3 further improved these attributes. Enzymes pertaining to the ascorbate glutathione and glyoxylase systems increased significantly when the chickpea plants were exposed to Cd. However, JA and GA3 applied singly or in combination showed improved enzymatic activities as well as nutrient uptake, whereas they reduced the metal accumulation in chickpea plants. Taken together, our findings demonstrated that JA and GA3 are suitable agents for regulating Cd stress resistance in chickpea plants.

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“…RWC is considered to be one of the prospective stress indicators 64 , 65 . Exposure of chickpea plants to Cd resulted in decreased RWC in the present investigation.…”

Section: Discussionmentioning

confidence: 99%

Jasmonic acid (JA) and gibberellic acid (GA3) mitigated Cd-toxicity in chickpea plants through restricted cd uptake and oxidative stress management

Ahmad

Raja²,

Ashraf

et al. 2021

Sci Rep

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“…Increase in tissue's fresh weight is generally associated with changes in cell metabolism and increase in some cell protective osmolites such as soluble carbohydrates, organic nitrogen compounds (peptides, amides and amino acids) and some phytohormones (Poschenrieder and Barcel o, 2004;Guo et al, 2019;Liu et al, 2019). Organic nitrogen compounds have unique role in sequestering and inactivation of toxic metals (Srivastava et al, 2004;Rady et al, 2019;Kato et al, 2019), and the role of phytochlatines has been well established in this regard (Cobbett and Goldsbrough, 2002;Marschner, 2011). It was shown that cadmium deposits extracellularly in some cell walls, and intracellularly on the inner surfaces of xylem vessels and some cytoplasm, in the root tip of two species of Iris L. treated with 1000 mg L À1 Cd in comparison to cells in control plants (Han et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

“…Despite plant species generally differ in their tolerance to heavy metals and cadmium pollution; however, different strategies have been suggested and applied to reduce heavy metal's bioavailability or to increase plant tolerance to their exposure. Foliar or soil application of some beneficial elements such as silica, potassium, calcium, mycorrhiza and nitrogen forms have been reported to influence plant heavy metal tolerance (Rady et al, 2019;Guo et al, 2019;Konate et al, 2017;Shi et al, 2019). Nitrogen is a mineral macronutrient with profound effects on plant metabolism (Marschner, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…The form, the time and the application rate of nitrogen and nitrogenous compounds may significantly influence many morphophysiological characteristics of plants. Nitrate is a major N form for plant uptake with different roles in plant metabolism that can significantly influence the plant tolerance to environmental stresses including cadmium toxicity (Marschner, 2011;Souri and Hatamian, 2019;Rady et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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Nitrate improves hackberry seedling growth under cadmium application

Hatamian

Nejad

Kafi

et al. 2020

Heliyon

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The environmental toxicity of heavy metals in particular cadmium is a public concern. Cadmium is toxic for all living organisms including plants; however, plant species may show different tolerance to the presence of cadmium in their root medium. Adopting practical strategies may reduce cadmium bioavailability or increase the plant tolerance. In the present study, interaction of nitrate was investigated on cadmium treatment in hackberry (Celtis australis L.) seedlings. Different levels of nitrate (0, 50 and 100 mg/L) and cadmium (0 and 5 mg/L) were applied to seedlings via irrigation water during two consequence years. The treatments were arranged in a factorial with completely randomized design in four replications. The results of ANOVA showed that the cadmium-nitrate interaction was significant on leaf Cd concentration and root dry weight at P ¼ 0.01, and on carotenoids and leaf dry weight at P ¼ 0.05, while it was not significant on the rest of traits. Application of cadmium had no significant effect on new shoot growth, leaf chlorophyll and leaf fresh weight; however, it significantly reduced stomatal water conductance and photosynthesis rate, while it increased leaf transpiration rate, root and stem fresh weights, leaf Cd and proline concentrations. Application of nitrate levels, on the other hand, constantly increased the leaf nitrate concentration, new shoot growth, leaf fresh and dry weights, root fresh weight, stomatal water conductance and photosynthesis rate, whereas it reduced the necrotic points of leaves. The results indicated that the growth characteristics of hackberry seedlings were mainly influenced by nitrate but not cadmium application, and this ornamental tree is a tolerant species to high soil Cd levels.

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“…These last reports do not confirm the involvement of PAs as HM chelators, but rather as AOXs and cellular protectors. Moreover, as mentioned in Section 3, PA's effects on HM homeostasis might be a mere consequence of enhanced levels of PCs (Hasanuzzaman et al, 2019; Nahar et al, 2016; Rady, Ahmed, Seif El‐Yazal, & Taie, 2019), which is a well‐recognised chelator important for the efficient detoxification of HMs. Overall, although there is a considerable amount of work elucidating the effects of PAs on HM tolerance, translocation and accumulation, there is still not enough evidence to address PAs as metal chelators.…”

Section: The Involvement Of Pas On Hm Bioaccumulation and Phytoremedimentioning

confidence: 99%

Polyamines as key regulatory players in plants under metal stress—A way for an enhanced tolerance

Spormann

Soares

Teixeira

et al. 2021

Annals of Applied Biology

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Polyamine (PA) metabolism and functions have started to raise attention from plant scientists in the last years. PAs have been investigated for their involvement in plant cell signalling and protection, proving that alterations in their endogenous levels can affect plant growth, development and survival. The recognised roles of PAs in metal‐stressed plants are presented and discussed on a “case‐study” basis, for each metal. Bearing in mind that the contamination of soils by heavy metals (HMs) is a growing problem worldwide, it is important to find efficient mechanisms through which agricultural productivity and food quality are safeguarded in a scenario of increased pollution. Making cultivars more tolerant to HM‐stress, capable of detoxifying or accumulating them safely, is a goal that will most certainly benefit from researching the functions and applicability of PAs. To date, plant PAs have been recognised for their roles as membrane‐, protein‐ and nucleic acid‐stabilisers, as protectors of cellular integrity and photosynthetic machinery, as direct and indirect signalling agents, and as emerging members of the non‐enzymatic antioxidant system. Moreover, PAs are not only important in normal plant developmental processes but have also been suggested to induce stress priming, to act as epigenetic regulators of gene expression and to enhance the detoxification and vacuolar compartmentalization of HMs. Although the stress‐ameliorating effects of PAs have been widely studied for several abiotic stresses, not much is known regarding their effects on metal induced‐stress, except for Cd. This review summarises the available work on the effects of PAs in plants exposed to Cu, Cd, Fe, Mn, Cr, Ni, Hg, Al, Pb and Zn.

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Alleviation of Cadmium Stress in Wheat by Polyamines

Cited by 8 publications

References 88 publications

Jasmonic acid (JA) and gibberellic acid (GA3) mitigated Cd-toxicity in chickpea plants through restricted cd uptake and oxidative stress management

Jasmonic acid (JA) and gibberellic acid (GA3) mitigated Cd-toxicity in chickpea plants through restricted cd uptake and oxidative stress management

Nitrate improves hackberry seedling growth under cadmium application

Polyamines as key regulatory players in plants under metal stress—A way for an enhanced tolerance

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