Cadmium and arsenic affect root development in Oryza sativa L. negatively interacting with auxin

Ronzan, Marilena; Piacentini, Diego; Fattorini, Lorenzo; Rovere, Federica Della; Eiche, Elisabeth; Riemann, Michael; Altamura, M. M.; Falasca, Giuseppina

doi:10.1016/j.envexpbot.2018.04.008

Cited by 131 publications

(50 citation statements)

References 58 publications

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“…In contrast, irregularly lignified conducting elements have been observed in vascular tissue of pea seedlings exposed to lead and arsenate [34]. Both soybean cultivars prevented metal(oid)s to amass in the aboveground plant parts as reported by others [31]. Since soot-to-shoot metal translocation depends on the transpiration flow [13] regulated by stomata and their parameters/activity, Fig.…”

Section: Discussionmentioning

confidence: 53%

“…Doses of metal(loid), that are similar or higher than those found in polluted European areas exerted variable toxicity on the surveyed soybean cultivars similarly as described for soybean [29,30] and other plant species [31] as well as lichens and mosses [32]. The cultivars Bólyi 44 and Cordoba were selected for further analyses as contrasting in metal tolerance (to both As 3+ and Cd 2+ ) (Fig.…”

Section: Discussionmentioning

confidence: 99%

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Plasticity of Soybean Stomatal Responses to Arsenic and Cadmium at the Whole Plant Level

Gálusová¹,

Piršelová²,

Rybanský³

et al. 2020

Pol. J. Environ. Stud.

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Heavy metals perturbate water balance in plants and hence impact stomatal aperture. After longer exposure, stomatal development also is affected, and stomatal density and size can change. Two soybean (Glycine max) varieties were experimentally selected for contrasting tolerance to arsenic and cadmium. For these cultivars, natural variability in leaf epidermal cell parameters was detected. Pot plants at first assimilating leaf stage were exposed for 10 days to 5 mg kg-1 soil As 3+ and 50 mg kg-1 soil Cd 2+ (respectively). Metals accumulated primarily in roots and exerted relatively low impact on biomass. Despite this, we observed diverse adjustments of stomata and pavement cells. In cv. Bólyi 44 the stomatal size decreased upon stress treatment, possibly to avoid further water loss. In contrast, the other cultivar Cordoba uses larger stomata that might be advantageous in gaining further resources. The observed responses varied depending on leaf type. In addition, dorsoventral stomatal responses in width, yet undescribed under metal stress, were observed. Our data show that leaf epidermal cell adjustments are flexible components of plant defense even at low metal doses, and possibly help to compromise the structural and functional needs of plant (tissue) under metal stress.

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Section: Discussionmentioning

confidence: 53%

Section: Discussionmentioning

confidence: 99%

Plasticity of Soybean Stomatal Responses to Arsenic and Cadmium at the Whole Plant Level

Gálusová¹,

Piršelová²,

Rybanský³

et al. 2020

Pol. J. Environ. Stud.

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“…; Ronzan et al . ). However, supplementation with Ca acetate to Cd‐contaminated soil slowed down the decrease in rice productivity.…”

Section: Resultsmentioning

confidence: 97%

Calcium acetate‐induced reduction of cadmium accumulation in Oryza sativa: Expression of auto‐inhibited calcium‐ATPase and cadmium transporters

Treesubsuntorn

Thiravetyan

2019

Plant Biol J

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Calcium (Ca) signalling has an essential role in regulating plant responses to various abiotic stresses.• This study applied Ca in various forms (Ca acetate and CaCl 2 ) and concentrations to reduce cadmium (Cd) concentration in rice and propose a possible mechanism through which Ca acts to control the Cd concentration in rice.• The results showed that supplementation of Cd-contaminated soil with Ca acetate reduced the Cd concentration in rice after exposure for 7 days in both hydroponic and soil conditions. The possible involvement of the auto-inhibited Ca 2+ -ATPase gene (ACA) might act to control the primary signal of the Cd stress response. The messages from ACA3 and ACA13 tended to up-regulate the low-affinity cation transporter (OsLCT1) and down-regulate Cd uptake and the Cd translocation transporter, including the genes, natural resistance-associated macrophage protein 5 (Nramp5) and Zn/ Cd-transporting ATPase 2 (HMA2), which resulted in a reduction in the Cd concentration in rice. After cultivation for 120 days, the application of Ca acetate into Cdcontaminated soil inhibited Cd uptake of rice.• Increasing the Ca acetate concentration in the soil lowered the Cd concentration in rice shoots and grains. Moreover, Ca acetate maintained rice productivity and quality whereas both aspects decreased under Cd stress.

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“…In addition, the decrease in water potential was probably due to decreased cell wall extensibility or elasticity by cross-linking the pectin carboxyl groups in the walls with heavy metals [22]. In addition to the interference with the absorption of water, metal stress is also suspected to cause the hampering of plant hormones, especially auxins [52]. Although indirect, the decline of photosynthesis also affects cell enlargement, considering that this process will produce the needed materials to form new cell walls.…”

Section: Growth Inhibition Due To Metal Stressmentioning

confidence: 99%

Cellular and Ultrastructure Alteration of Plant Roots in Response to Metal Stress

Hamim¹,

Miftahudin²,

Setyaningsih³

2018

Plant Growth and Regulation - Alterations to Sustain Unfavorable Conditions

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Metal stress is among the important environmental stresses, which influences the growth and development of plants and crops in many areas in the biosphere. Root is an important gate for the absorption of water and mineral nutrition which in many types of lands is also accompanied by a higher concentration of metal elements, either essential (such as Fe, Mn, and Cu) or non-essential metal elements or heavy metals (such as Al, Pb, Hg, Cd, and Ag). In response to metal stress, plant roots sometimes develop a cellular structure to prevent excessive concentration of metal components to avoid toxic effects and cellular damage. Physiological and biochemical responses at the cellular level, which result in ultrastructure changes may occur due to or to avoid the negative effect of metal toxicity. In many cases it was followed by the reduction of root growth followed by discontinuing entirely plant growth. On the other hand, the structural changes are an important part of root mechanism to sustain the plant from metal toxicity. In this chapter, different changes in the cellular ultrastructure resulting from toxic damage or indicating tolerance response to metal stress will be elucidated.

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Cadmium and arsenic affect root development in Oryza sativa L. negatively interacting with auxin

Cited by 131 publications

References 58 publications

Plasticity of Soybean Stomatal Responses to Arsenic and Cadmium at the Whole Plant Level

Plasticity of Soybean Stomatal Responses to Arsenic and Cadmium at the Whole Plant Level

Calcium acetate‐induced reduction of cadmium accumulation in Oryza sativa: Expression of auto‐inhibited calcium‐ATPase and cadmium transporters

Cellular and Ultrastructure Alteration of Plant Roots in Response to Metal Stress

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