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Exogenous foliar application of fulvic acid alleviate cadmium toxicity in lettuce (Lactuca sativa L.).
Ecotoxicol Environ Saf. 2019 Jan 15; 167:10-19.EE

Abstract

It was reported that fulvic acid (FA) has a positive effect on enhancing plant tolerance to various environmental stresses, including salinity stress and drought stress and so on. However, there is little study regarding the effects of FA on plants in response to heavy metal stress. Hence, the objective of this study was to investigate the potential effects of fulvic acid (FA) on cadmium (Cd) toxicity alleviation in lettuce seedlings. Our results showed that application of 0.5 g/L FA significantly mitigate Cd-induced toxic symptoms in lettuce seedlings. Cd stress triggered plant growth inhibition, photosynthetic pigment reduction, destruction of the photosynthesis apparatus, reactive oxygen species (ROS) accumulation, and nutrient elemental imbalance. We observed that FA promoted the growth in lettuce under Cd stress, mainly reflected in those alterations that the increase of biomass, chlorophyll content and photosynthesis capacity and reduction of the Cd content and lipid peroxidation in plant tissue. Foliar spraying of FA significantly alleviated these detrimental symptoms and facilitated nutrient element translocation from root to shoot, particularly the absorption of elements involved in photosynthesis, including iron (Fe), zinc (Zn), and manganese (Mn). In summary, foliar application of FA conferred Cd toxicity tolerance to lettuce by increasing ROS-scavenging capacity, inhibiting Cd uptake and the transport of elemental nutrients to shoots, which in turn protected the photosynthetic apparatus and promoted plant growth.

Authors+Show Affiliations

College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China. Electronic address: photolabxu@sina.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30292971

Citation

Wang, Yanmei, et al. "Exogenous Foliar Application of Fulvic Acid Alleviate Cadmium Toxicity in Lettuce (Lactuca Sativa L.)." Ecotoxicology and Environmental Safety, vol. 167, 2019, pp. 10-19.
Wang Y, Yang R, Zheng J, et al. Exogenous foliar application of fulvic acid alleviate cadmium toxicity in lettuce (Lactuca sativa L.). Ecotoxicol Environ Saf. 2019;167:10-19.
Wang, Y., Yang, R., Zheng, J., Shen, Z., & Xu, X. (2019). Exogenous foliar application of fulvic acid alleviate cadmium toxicity in lettuce (Lactuca sativa L.). Ecotoxicology and Environmental Safety, 167, 10-19. https://doi.org/10.1016/j.ecoenv.2018.08.064
Wang Y, et al. Exogenous Foliar Application of Fulvic Acid Alleviate Cadmium Toxicity in Lettuce (Lactuca Sativa L.). Ecotoxicol Environ Saf. 2019 Jan 15;167:10-19. PubMed PMID: 30292971.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Exogenous foliar application of fulvic acid alleviate cadmium toxicity in lettuce (Lactuca sativa L.). AU - Wang,Yanmei, AU - Yang,Ruixi, AU - Zheng,Jiaying, AU - Shen,Zhenguo, AU - Xu,Xiaoming, Y1 - 2018/10/04/ PY - 2018/01/18/received PY - 2018/08/16/revised PY - 2018/08/17/accepted PY - 2018/10/8/pubmed PY - 2019/1/9/medline PY - 2018/10/8/entrez KW - Antioxidant enzymes KW - Cadmium stress KW - Fulvic acid KW - Lettuce KW - Mineral nutrition SP - 10 EP - 19 JF - Ecotoxicology and environmental safety JO - Ecotoxicol Environ Saf VL - 167 N2 - It was reported that fulvic acid (FA) has a positive effect on enhancing plant tolerance to various environmental stresses, including salinity stress and drought stress and so on. However, there is little study regarding the effects of FA on plants in response to heavy metal stress. Hence, the objective of this study was to investigate the potential effects of fulvic acid (FA) on cadmium (Cd) toxicity alleviation in lettuce seedlings. Our results showed that application of 0.5 g/L FA significantly mitigate Cd-induced toxic symptoms in lettuce seedlings. Cd stress triggered plant growth inhibition, photosynthetic pigment reduction, destruction of the photosynthesis apparatus, reactive oxygen species (ROS) accumulation, and nutrient elemental imbalance. We observed that FA promoted the growth in lettuce under Cd stress, mainly reflected in those alterations that the increase of biomass, chlorophyll content and photosynthesis capacity and reduction of the Cd content and lipid peroxidation in plant tissue. Foliar spraying of FA significantly alleviated these detrimental symptoms and facilitated nutrient element translocation from root to shoot, particularly the absorption of elements involved in photosynthesis, including iron (Fe), zinc (Zn), and manganese (Mn). In summary, foliar application of FA conferred Cd toxicity tolerance to lettuce by increasing ROS-scavenging capacity, inhibiting Cd uptake and the transport of elemental nutrients to shoots, which in turn protected the photosynthetic apparatus and promoted plant growth. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/30292971/Exogenous_foliar_application_of_fulvic_acid_alleviate_cadmium_toxicity_in_lettuce__Lactuca_sativa_L___ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0147-6513(18)30803-0 DB - PRIME DP - Unbound Medicine ER -