Rice (<i>Oryza sativa</i>) Laccases Involved in Modification and Detoxification of Herbicides Atrazine and Isoproturon Residues in Plants

Huang, Manna; Lu, Yi; Zhang, Shuang; Luo, Fang; Yang, Hong

doi:10.1021/acs.jafc.6b02187

Cited by 63 publications

(44 citation statements)

References 52 publications

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“…Previous evidence has shown that the expression of HPPD responded to oxidative stress in barley leaf because it was induced by senescence, methyl jasmonate, ethylene, hydrogen peroxide and herbicide; paraquat and 3-(3,4-dichlorophenyl)-1,1-dimethylurea [ 72 ]. Furthermore, a report on the expression of two rice laccase ( LAC ) genes (LOC_Os01g63180 and LOC_Os12g15680), which were identified as HT salt-responsive DEG here, in yeast cells suggested that the laccases played roles in atrazine and isoproturon herbicide detoxification [ 73 ]. In Arabidopsis, atlac1 and atlac2 mutants exhibited deficient root elongation under polyethylene glycol (PEG) treatment, while the atlac8 mutant showed early flowering and the atlac15 mutant showed abnormal seed color.…”

Section: Discussionmentioning

confidence: 99%

Downstream components of the calmodulin signaling pathway in the rice salt stress response revealed by transcriptome profiling and target identification

et al. 2018

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BackgroundCalmodulin (CaM) is an important calcium sensor protein that transduces Ca2+ signals in plant stress signaling pathways. A previous study has revealed that transgenic rice over-expressing the calmodulin gene OsCam1–1 (LOC_Os03g20370) is more tolerant to salt stress than wild type. To elucidate the role of OsCam1–1 in the salt stress response mechanism, downstream components of the OsCam1–1-mediated response were identified and investigated by transcriptome profiling and target identification.ResultsTranscriptome profiling of transgenic ‘Khao Dawk Mali 105’ rice over-expressing OsCam1–1 and wild type rice showed that overexpression of OsCam1–1 widely affected the expression of genes involved in several cellular processes under salt stress, including signaling, hormone-mediated regulation, transcription, lipid metabolism, carbohydrate metabolism, secondary metabolism, photosynthesis, glycolysis, tricarboxylic acid (TCA) cycle and glyoxylate cycle. Under salt stress, the photosynthesis rate in the transgenic rice was slightly lower than in wild type, while sucrose and starch contents were higher, suggesting that energy and carbon metabolism were affected by OsCam1–1 overexpression. Additionally, four known and six novel CaM-interacting proteins were identified by cDNA expression library screening with the recombinant OsCaM1. GO terms enriched in their associated proteins that matched those of the differentially expressed genes affected by OsCam1–1 overexpression revealed various downstream cellular processes that could potentially be regulated by OsCaM1 through their actions.ConclusionsThe diverse cellular processes affected by OsCam1–1 overexpression and possessed by the identified CaM1-interacting proteins corroborate the notion that CaM signal transduction pathways compose a complex network of downstream components involved in several cellular processes. These findings suggest that under salt stress, CaM activity elevates metabolic enzymes involved in central energy pathways, which promote or at least maintain the production of energy under the limitation of photosynthesis.Electronic supplementary materialThe online version of this article (10.1186/s12870-018-1538-4) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

Downstream components of the calmodulin signaling pathway in the rice salt stress response revealed by transcriptome profiling and target identification

et al. 2018

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“…Laccases from other plants have been proposed and successfully tested for dye degradation using suspension cells and purified laccases [86–90]. Huang et al [91] identified laccases in rice ( Oryza sativa ), possibly involved in atrazine and isoproturon (herbicides) catabolism or detoxification. The two Oryza sativa laccases expressed heterologously in P. pastoris , led to the increased resistance of cells to atrazine and isoproturon, suggesting that some of the laccases could be involved in detoxification or degradation of these herbicides [91].…”

Section: Sources Of Laccases That Are Useful In Water Bioremediationmentioning

confidence: 99%

Laccases: structure, function, and potential application in water bioremediation

et al. 2019

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The global rise in urbanization and industrial activity has led to the production and incorporation of foreign contaminant molecules into ecosystems, distorting them and impacting human and animal health. Physical, chemical, and biological strategies have been adopted to eliminate these contaminants from water bodies under anthropogenic stress. Biotechnological processes involving microorganisms and enzymes have been used for this purpose; specifically, laccases, which are broad spectrum biocatalysts, have been used to degrade several compounds, such as those that can be found in the effluents from industries and hospitals. Laccases have shown high potential in the biotransformation of diverse pollutants using crude enzyme extracts or free enzymes. However, their application in bioremediation and water treatment at a large scale is limited by the complex composition and high salt concentration and pH values of contaminated media that affect protein stability, recovery and recycling. These issues are also associated with operational problems and the necessity of large-scale production of laccase. Hence, more knowledge on the molecular characteristics of water bodies is required to identify and develop new laccases that can be used under complex conditions and to develop novel strategies and processes to achieve their efficient application in treating contaminated water. Recently, stability, efficiency, separation and reuse issues have been overcome by the immobilization of enzymes and development of novel biocatalytic materials. This review provides recent information on laccases from different sources, their structures and biochemical properties, mechanisms of action, and application in the bioremediation and biotransformation of contaminant molecules in water. Moreover, we discuss a series of improvements that have been attempted for better organic solvent tolerance, thermo-tolerance, and operational stability of laccases, as per process requirements.

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“…Plant laccase families are even larger than fungal laccase families. For example, there are at least 22 laccase genes in rice ( Oryza sativa ) (Huang et al, 2016). The model plant, Arabidopsis thaliana , has 17 members in its laccase gene family, which play several roles in plant growth and development, based on mutant characterization and expression profiling (Cai et al, 2006; Turlapati et al, 2011).…”

Section: Natural Laccase Producersmentioning

confidence: 99%

Laccases: Production, Expression Regulation, and Applications in Pharmaceutical Biodegradation

et al. 2017

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Laccases are a family of copper-containing oxidases with important applications in bioremediation and other various industrial and biotechnological areas. There have been over two dozen reviews on laccases since 2010 covering various aspects of this group of versatile enzymes, from their occurrence, biochemical properties, and expression to immobilization and applications. This review is not intended to be all-encompassing; instead, we highlighted some of the latest developments in basic and applied laccase research with an emphasis on laccase-mediated bioremediation of pharmaceuticals, especially antibiotics. Pharmaceuticals are a broad class of emerging organic contaminants that are recalcitrant and prevalent. The recent surge in the relevant literature justifies a short review on the topic. Since low laccase yields in natural and genetically modified hosts constitute a bottleneck to industrial-scale applications, we also accentuated a genus of laccase-producing white-rot fungi, Cerrena, and included a discussion with regards to regulation of laccase expression.

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Rice (Oryza sativa) Laccases Involved in Modification and Detoxification of Herbicides Atrazine and Isoproturon Residues in Plants

Cited by 63 publications

References 52 publications

Downstream components of the calmodulin signaling pathway in the rice salt stress response revealed by transcriptome profiling and target identification

Downstream components of the calmodulin signaling pathway in the rice salt stress response revealed by transcriptome profiling and target identification

Laccases: structure, function, and potential application in water bioremediation

Laccases: Production, Expression Regulation, and Applications in Pharmaceutical Biodegradation

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