Effects of Copper Exposure on Photosynthesis and Growth of the Seagrass Cymodocea nodosa: An Experimental Assessment

Llagostera, Izaskun; Daniel, Cervantes; Sanmartí, Neus; Romero, Javier; Pérez, Marta

doi:10.1007/s00128-016-1863-y

Cited by 22 publications

(10 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Chlorophylls are pivotal in photosynthesis and their content variations reflect the degree of photosynthesis (Bot et al, 1990; Zhang et al, 2011). However, heavy metals (e.g., Ni, Cu) could induce toxic effects on chlorophylls, such as synthesis inhibition and structural destruction (Sreekanth et al, 2013; Llagostera et al, 2016). …”

Section: Discussionmentioning

confidence: 99%

Effects of Antimony Stress on Photosynthesis and Growth of Acorus calamus

et al. 2018

View full text Add to dashboard Cite

This study was aimed to explore that effects of Sb on physiological parameters of Acorus calamus and the possibility of using A. calamus as a remediation plant. A. calamus potted experiments were conducted using different concentrations (0, 250, 500, 1000, and 2000 mg/kg) of antimony potassium tartrate (Sb3+) (marked as CK, T1, T2, T3, and T4, respectively) and potassium pyroantimonate (Sb5+) (marked as CK, T′1, T′2, T′3, and T′4, respectively). The effects of Sb stress (Sb3+ and Sb5+) on leaf photosynthetic pigments, biomass, photosynthetic characteristics and chlorophyll fluorescence parameters of potted A. calamus were studied. With the rise of Sb3+ concentration from T1 to T4, the leaf pigment contents (chlorophyll a, b, carotenoid), plant height, dry weight, net photosynthetic rate (Pn), stomatal conductance (Gs), evaporation rate (E), PSII maximum photochemical efficiency (Fv/Fm), and PSII electron transfer quantum yield rate (ΦPSII) of A. calamus all reduced, while intercellular CO2 concentration (Ci) significantly increased. The reduction of Pn was mainly induced by non-stomatal limitation. Chlorophyll a/b ratio increased significantly versus the control, while carotenoid/chlorophyll ratio (Car/Chl) first decreased and then increased. The leaf Chl a, Chl b, Car, plant height, dry weight, Pn, Gs, E, Fv/Fm, and ΦPSII all maximized in T′1 (250 mg/kg), but were not significantly different from the control. As the Sb5+ concentration increased from T′2 to T′4, the above indices all decreased and were significantly different from the control. Moreover, intercellular CO2 concentration (Ci) decreased significantly. The reduction of Pn was caused by non-stomatal limitation, indicating the mesophyll cells were damaged. The Car/Chl ratio was stable within 0–500 mg/kg Sb, but decreased in T3 and T4, and rose in T′3 and T′4. After Sb3+ and Sb5+ treatments, translocation factor varied 19.44–27.8 and 19.44–24.86%, respectively. In conclusion, different form Sb3+ treatment, Sb5+ treatment showed a Hormesi effect, as low-concentration treatment promoted A. calamus growth, but high-concentration treatment inhibited its growth. The two forms of Sb both caused unfavorable effects on A. calamus, but the seedlings did not die and were modestly adaptive and Sb-accumulative. A. calamus, which is easily maintained and cultivated, can serve as a good candidate for phytoremediation of water contaminated with Sb.

show abstract

Section: Discussionmentioning

confidence: 99%

Effects of Antimony Stress on Photosynthesis and Growth of Acorus calamus

et al. 2018

View full text Add to dashboard Cite

show abstract

“…A large volume of literature is available on the impact of elevated Cu on major aspects in plants including germination and growth (López-Bucio et al, 2003;Lin et al, 2005;Mench and Bes, 2009;Potters et al, 2009;Bouazizi et al, 2010;Lequeux et al, 2010;Verma et al, 2011;Feigl et al, 2013;Gang et al, 2013;Muccifora and Bellani, 2013;Adrees et al, 2015;Marques et al, 2018), photosynthesis and related variables (Chatterjee and Chatterjee, 2000;Quartacci et al, 2000;Yruela, 2005;Küpper et al, 2009;Gonzalez-Mendoza et al, 2013;Mateos-Naranjo et al, 2013;Adrees et al, 2015;Feigl et al, 2015;de Freitas et al, 2015;Emamverdian et al, 2015;Sharma et al, 2017;Ambrosini et al, 2018), phenotypic changes (Barbosa et al, 2013;Feigl et al, 2013;Sánchez-Pardo et al, 2014;Adrees et al, 2015;Nair and Chung, 2015;Ali et al, 2016;Brunetto et al, 2016;Llagostera et al, 2016;Mwamba et al, 2016;Ambrosini et al, 2018;Shiyab, 2018;Marastoni et al, 2019b;Nazir et al, 2019;Shams et al, 2019), and nutrient-use-efficiency of plants (Chatterjee and Chatterjee, 2000;…”

Section: Copper-induced Toxicity In Plantsmentioning

confidence: 99%

“…In addition to reductions in shoot and root growth, elevated Cu-exposed plants exhibited phenotypic changes as toxicity symptoms, where roots showed intense dark color with increasing Cu concentration (Marastoni et al, 2019b). In several studies, elevated acquisition of Cu was culminated into chlorosis, leaf epinasty, decreased branching, thickening, and dark coloration (Nair and Chung, 2015;Ali et al, 2016) and also to the development of necrotic patches in leaf tips and margins (Llagostera et al, 2016). Altered surface root morphology, rolling of the leaf blade and reduced leaf area were also reported in plants under elevated Cu-exposure (Sánchez-Pardo et al, 2014;Nazir et al, 2019).…”

Section: Phenotypic Changesmentioning

confidence: 99%

Mechanisms and Role of Nitric Oxide in Phytotoxicity-Mitigation of Copper

et al. 2020

View full text Add to dashboard Cite

Phytotoxicity of metals significantly contributes to the major loss in agricultural productivity. Among all the metals, copper (Cu) is one of essential metals, where it exhibits toxicity only at its supra-optimal level. Elevated Cu levels affect plants developmental processes from initiation of seed germination to the senescence, photosynthetic functions, growth and productivity. The use of plant growth regulators/phytohormones and other signaling molecules is one of major approaches for reversing Cu-toxicity in plants. Nitric oxide (NO) is a versatile and bioactive gaseous signaling molecule, involved in major physiological and molecular processes in plants. NO modulates responses of plants grown under optimal conditions or to multiple stress factors including elevated Cu levels. The available literature in this context is centered mainly on the role of NO in combating Cu stress with partial discussion on underlying mechanisms. Considering the recent reports, this paper: (a) overviews Cu uptake and transport; (b) highlights the major aspects of Cu-toxicity on germination, photosynthesis, growth, phenotypic changes and nutrient-use-efficiency; (c) updates on NO as a major signaling molecule; and (d) critically appraises the Cu-significance and mechanisms underlying NO-mediated alleviation of Cu-phytotoxicity. The outcome of the discussion may provide important clues for future research on NO-mediated mitigation of Cu-phytotoxicity.

show abstract

“…However, at elevated concentrations, it becomes phytotoxic, interfering in numerous biochemical and physiological processes [ 20 , 21 ]. The root morphology, synthesis of photosynthetic pigments, homeostasis, quantum yield, and photosynthesis are adversely modulated at high Cu +2 concentrations [ 22 , 23 ]. Mercury (Hg +2 ), a non-essential HM, is one of the severe threats to the environment and cause lethal effects on plants as it inhibits many important biological processes such as pollen germination and tube growth [ 24 ], photosynthesis [ 25 , 26 ], seed germination [ 27 ]and respiration.…”

Section: Introductionmentioning

confidence: 99%

Copper and mercury induced oxidative stresses and antioxidant responses of Spirodela polyrhiza (L.) Schleid

Singh

Kumar

Soni

2020

Biochemistry and Biophysics Reports

View full text Add to dashboard Cite

Duckweed is recognized as a phytoremediation aquatic plant due to the production of large biomass and a high level of tolerance in stressed conditions. A laboratory experiment was conducted to investigate antioxidant response and mechanism of copper and mercury tolerance of S. polyrhiza (L.) Schleid. To understand the changes in chlorophyll content, MDA, proline, and activities of ROS-scavenging enzymes (SOD, CAT, GPOD) during the accumulation of Cu +2 and Hg +2 , S. polyrhiza were exposed to various concentrations of Cu +2 (0.0–40 μM) and Hg +2 (0.0–0.4 μM). antioxidant activity initially indicated enhancing trend with application of 10 μM Cu +2 ; 0.2 μM Hg +2 (SOD), of 20 μM Cu +2 ; 0.2 μM Hg +2 (CAT) and of 10 μM Cu +2 ;0.2 μM Hg +2 (GPOD) and then decreased consistently up to 40 μM Cu +2 and 0.4 μM Hg +2 . In the experiment chlorophyll and frond multiplication initially showed increasing tendency and decreased gradually with the application of increased metal concentration. Application of heavy metal has constantly enhanced proline and MDA content while the maximum increase was observed with the application of 40 μM Cu; 0.4 μM Hg for proline and MDA respectively. The upregulation of antioxidant enzymes and proline reveals that S. polyrhiza has strong biochemical strategies to deal with the heavy metal toxicity induced by the accumulation of Cu +2 and Hg +2 .

show abstract

Effects of Copper Exposure on Photosynthesis and Growth of the Seagrass Cymodocea nodosa: An Experimental Assessment

Cited by 22 publications

References 33 publications

Effects of Antimony Stress on Photosynthesis and Growth of Acorus calamus

Effects of Antimony Stress on Photosynthesis and Growth of Acorus calamus

Mechanisms and Role of Nitric Oxide in Phytotoxicity-Mitigation of Copper

Copper and mercury induced oxidative stresses and antioxidant responses of Spirodela polyrhiza (L.) Schleid

Contact Info

Product

Resources

About