Cadmium-induced structural disturbances in pea leaves are alleviated by nitric oxide

Tran, Tuan Anh; Vassileva, Valya; Petrov, P.; Попова, Л. Л.

doi:10.3906/bot-1209-8

Cited by 19 publications

(16 citation statements)

References 52 publications

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“…The previous studies conducted by Al-Saadi et al (2013) also found similar results that heavy metals such as Ag and Cu caused a decrease of leaf blade thickness of Potamogeton plant. In Pisum sativum, Cd toxicity also decreased the leaf size and thickened lamina (Tran et al 2013). Heavy metals also caused growth inhibition of leaf mesophyll tissues, reduced leaf blade thickness, and also reduced the size of epidermal cells (Tang et al 2013).…”

Section: Resultsmentioning

confidence: 99%

Growth, histochemical and physiological responses of non-edible oil producing plant (Reutealis trisperma) to gold mine tailings

et al. 2018

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Hilmi M, Hamim H, Sulistyaningsih YC, Taufikurahman. 2018. Growth, histochemical and physiological responses of nonedibleoil producing plant (Reutealis trisperma) to gold mine tailings. Biodiversitas 19: 1294-1302. Reutealis trisperma (Blanco) AiryShaw is a non-edible biodiesel producing plant that is able to grow well in various unfavorable environmental conditions. The studyaimed to analyze the growth, physiological, and anatomical responses of R. trisperma to gold mine tailings. Three-month-old of R.trisperma were grown in 8 kg of polybags contained with mixed soil-compost medium treated with 0, 25, 50 and 100% of gold minetailings for 3 months. Root and shoot growth, physiological and anatomical characters, and histochemical analysis of Pb inside the rootsand leaves were examined. The root and shoot growth as well as chlorophyll a and b contents of R. trisperma grown in sole gold minetailing at 100% significantly decreased, while at the lower concentration of gold mine tailings, the decrease of the growth performanceswas not significant, or even increased shown in that of 25% of tailing treatment. The treatment of gold mine tailing at 100% alsoinduced lipid peroxidation, indicated by the significant increase in malondialdehyde (MDA) contents in the root as well as the leaves.Histochemical analysis showed that accumulation of Pb occurred both in roots as well as in leaves of R. trisperma treated with 100% oftailings. High-level tailing treatment also induced anatomical alteration in roots as well as leaves of the species. These results indicatedthat gold mine tailings induced oxidative stress in roots and leaves of R. trisperma resulted in growth inhibition.

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Section: Resultsmentioning

confidence: 99%

Growth, histochemical and physiological responses of non-edible oil producing plant (Reutealis trisperma) to gold mine tailings

et al. 2018

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“…4 A decrease in leaf size and the lamina's thickness, intercellular spaces, density of stomata, and the sizes of the stomatal aperture reduces the rate of transpiration. Stomata closure is induced directly by heavy metals and/or is a consequence of the early effects of metal toxicity in roots and stems sativum, Cd toxicity resulted in a decrease in leaf size and the thickness of the lamina, reduced intercellular spaces in the mesophyll, small pavement cells and a high density of stomata (Tran et al 2013). Previous studies have indicated that the number of stomata per unit of leaf area increased in Helianthus annuus treated with Pb, Cd, Cu and Zn (Kastori et al 1992), and in Beta vulgaris exposed to Cd (Greger and Johansson 1992).…”

Section: Effects Of Heavy Metals On Transpiratory Water Lossmentioning

confidence: 99%

Water relations in plants subjected to heavy metal stresses

2016

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Concentrations of heavy metals in soil seldom reach a level sufficient to cause osmotic disturbances in plants. It is likely that water entry to the roots is indirectly governed by other factors which are themselves affected by metals. Decreased elongation of the primary root, impaired secondary growth, increased root dieback, or reduced root hair caused by toxic ions all exert a deleterious effect on the root-absorbing area and water uptake. Moreover, metals are able to decelerate short-distance water transfer both in symplast and apoplast, which in turn reduce the movement of water into the vascular system and affect water supply to the shoot. Long-distance transport is limited also due to decreased hydraulic conductivity in the root, stem and leaf midrib caused by a reduction in the size of vessels and tracheids, and partial blockage of xylem elements by cellular debris or gums. Heavy metals influence water delivery to the shoot due to inhibition of transpiration as they decrease the size of the leaves and the thickness of the lamina, reduce intercellular spaces, affect the density of stomata and decrease their aperture. Stomata closure is induced by direct interaction of toxic metals with guard cells and/or as a consequence of the early effects of metal toxicity on roots and stems. In metal-stressed plants, rootderived ABA or ABA-induced signals might play a role in stomatal movement. Disturbances in water relations trigger differential regulation of aquaporin gene expression, which may contribute to further reductions in water loss.

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“…Singh and Agrawal (2010) and Tran et al (2013) have reported that Beta vulgaris and Psidium sativum responded to heavy metal pollution by significantly increasing their leaf area. However, a decrease in these parameters was observed in the current study in T. diversifolia and A. africana as a result of exposure to heavy metals.…”

Section: Discussionmentioning

confidence: 99%

Changes in leaf morphological and anatomical characters of some plant species in response to gemstone mining in southwestern Nigeria

Ogundare¹,

Jimoh²,

Saheed³

2018

Ife Journal of Science

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The responses of seven selected plant species to gemstone mining activities were investigated based on data obtained from exo-and endo-morphology of the leaves with the aim of establishing the responses of the plant species to gemstone mining pollution and the underlining mechanism which could possibly explain such responses. Both qualitative and quantitative methods, using visual and microscopic assessment were adopted. Results of the foliar morphology showed that most of the plant species had significant increase (p<0.05) in the leaf area and petiole length in polluted sites compared to those from unpolluted site though with noted variations in others. The observed morphological responses are associated with corresponding significant increase (p<0.05) in stomata frequency, epidermal cell number, glandular and non-glandular trichome frequency and length, cuticle thickness, upper and lower epidermis. However, characters such as stomata size and palisade mesophyll tissue were significantly (p<0.05) reduced. We conclude based on the data obtained in this study that plants generally respond differently to pollution due to mining through either increase or reduction in some of their external (leaf area and petiole length) and internal features. These depict adaptive mechanisms employed by the plants in order to cope with polluted environments.

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Cadmium-induced structural disturbances in pea leaves are alleviated by nitric oxide

Cited by 19 publications

References 52 publications

Growth, histochemical and physiological responses of non-edible oil producing plant (Reutealis trisperma) to gold mine tailings

Growth, histochemical and physiological responses of non-edible oil producing plant (Reutealis trisperma) to gold mine tailings

Water relations in plants subjected to heavy metal stresses

Changes in leaf morphological and anatomical characters of some plant species in response to gemstone mining in southwestern Nigeria

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