keyword
MENU ▼
Read by QxMD icon Read
search

Metal plant defense

keyword
https://www.readbyqxmd.com/read/29111597/responses-of-an-adventitious-fast-growing-plant-to-photodynamic-stress-comparative-study-of-anionic-and-cationic-porphyrin-effect-on-arabidopsis-thaliana
#1
Mohammad Issawi, Damien Guillaumot, Vincent Sol, Catherine Riou
Antimicrobial Photodynamic Treatment based on the use of a photosensitizer to produce reactive oxygen species that induce cell death could be envisaged to fight against plant pathogens. For setting this strategy, we want to study how plants themselves respond to photodynamic treatment. In a previous work we showed that tomato plantlets were able to resist to photoactivated tetra (N-methylpyridyl) porphyrin (CP) or Zinc metalated form (CP-Zn). To enlarge our plant expertise related to exogenous porphyrins treatment and to further defend this approach, we studied how an adventice like Arabidopsis thaliana responded to exogenous supply of anionic and cationic porphyrins...
November 7, 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/29091834/assessment-of-edibility-and-effect-of-arbuscular-mycorrhizal-fungi-on-solanum-melongena-l-grown-under-heavy-metal-loid-contaminated-soil
#2
Ritu Chaturvedi, Paulo Favas, João Pratas, Mayank Varun, Manoj S Paul
Arbuscular mycorrhizal fungi (AMF) aids in plant establishment at heavy metal(loid) (HM) contaminated soils, strengthening plant defense system along with promoting growth. A pot experiment was carried out to evaluate the effect of AMF on eggplants grown under HM stress. Further, the potential health risks of HM exposure to the humans via dietary intake of eggplant were also estimated. Results showed that AMF application improved growth, biomass and antioxidative defense response of plants against HM stress...
October 27, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29089035/transcriptional-analysis-of-sweet-orange-trees-co-infected-with-candidatus-liberibacter-asiaticus-and-mild-or-severe-strains-of-citrus-tristeza-virus
#3
Shimin Fu, Jonathan Shao, Cristina Paul, Changyong Zhou, John S Hartung
BACKGROUND: Citrus worldwide is threatened by huanglongbing (HLB) and tristeza diseases caused by 'Candidatus Liberibacter asiaticus' (CaLas) and Citrus tristeza virus (CTV). Although the pathogens are members of the α-proteobacteria and Closteroviridae, respectively, both are restricted to phloem cells in infected citrus and are transmitted by insect vectors. The response of sweet orange to single infection by either of these two pathogens has been characterized previously by global gene expression analysis...
October 31, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29028613/divergent-biology-of-facultative-heavy-metal-plants
#4
REVIEW
Hermann Bothe, Aneta Słomka
Among heavy metal plants (the metallophytes), facultative species can live both in soils contaminated by an excess of heavy metals and in non-affected sites. In contrast, obligate metallophytes are restricted to polluted areas. Metallophytes offer a fascinating biology, due to the fact that species have developed different strategies to cope with the adverse conditions of heavy metal soils. The literature distinguishes between hyperaccumulating, accumulating, tolerant and excluding metallophytes, but the borderline between these categories is blurred...
September 7, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28965600/evaluation-of-silicon-influence-on-the-mitigation-of-cadmium-stress-in-the-development-of-arabidopsis-thaliana-through-total-metal-content-proteomic-and-enzymatic-approaches
#5
Josiane M T Carneiro, Katherine Chacón-Madrid, Rodrigo M Galazzi, Bruna K Campos, Sandra C C Arruda, Ricardo A Azevedo, Marco A Z Arruda
The mitigation of Cd-stress through Si addition to Arabidopsis thaliana cultivation is evaluated in terms of total metal content, proteomic and enzymatic approaches. Four different treatment are evaluated: TC (control, without Si or Cd addition), T1 (with Si addition), T2 (with Cd addition), and T3 (with Si and Cd addition). Through the total determination of Cd and Si in Arabidopsis leaves, the Cd concentration decreased by half when T2 is compared with T3 treatment. In terms of proteomic approach, some differential protein species are achieved by comparative proteomics through 2-D DIGE of all treatments evaluated...
December 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28951982/effects-of-cd-zn-or-pb-stress-in-populus-alba-berolinensis-on-the-development-and-reproduction-of-lymantria-dispar
#6
Dun Jiang, Shanchun Yan
In order to investigate the effects of heavy metal stress on woody plant defense against phytophagous insects, we studied development and reproduction traits of the gypsy moth, Lymantria dispar that were separately fed with leaves plucked from poplar seedlings (Populus alba berolinensis) grown in either non-contaminated soil (control), Cd-contaminated soil (1.5 mg/kg), Zn-contaminated soil (500 mg/kg) or Pb-contaminated soil (500 mg/kg). The results showed that feeding on Cd or Pb stressed poplar leaves significantly decreased L...
September 26, 2017: Ecotoxicology
https://www.readbyqxmd.com/read/28942275/castasterone-confers-copper-stress-tolerance-by-regulating-antioxidant-enzyme-responses-antioxidants-and-amino-acid-balance-in-b-juncea-seedlings
#7
Poonam Yadav, Ravdeep Kaur, Mukesh Kumar Kanwar, Anket Sharma, Vinod Verma, Geetika Sirhindi, Renu Bhardwaj
The aim of the present study was to explore the effect of exogenous application of castasterone (CS) on physiologic and biochemical responses in Brassica juncea seedlings under copper (Cu) stress. Seeds were pre-soaked in different concentrations of CS and grown for 7 days under various levels of Cu. The exposure of B. juncea to higher levels of Cu led to decrease of morphologic parameters, with partial recovery of length and fresh weight in the CS pre-treated seedlings. Metal content was high in both roots and shoots under Cu exposure while the CS pre-treatment reduced the metal uptake...
January 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28932199/bacillus-a-biological-tool-for-crop-improvement-through-bio-molecular-changes-in-adverse-environments
#8
REVIEW
Ramalingam Radhakrishnan, Abeer Hashem, Elsayed F Abd Allah
Crop productivity is affected by environmental and genetic factors. Microbes that are beneficial to plants are used to enhance the crop yield and are alternatives to chemical fertilizers and pesticides. Pseudomonas and Bacillus species are the predominant plant growth-promoting bacteria. The spore-forming ability of Bacillus is distinguished from that of Pseudomonas. Members of this genus also survive for a long time under unfavorable environmental conditions. Bacillus spp. secrete several metabolites that trigger plant growth and prevent pathogen infection...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28926584/transcriptome-analysis-reveals-molecular-anthelmintic-effects-of-procyanidins-in-c-elegans
#9
Verena Spiegler, Andreas Hensel, Jochen Seggewiß, Milena Lubisch, Eva Liebau
Worldwide, more than 1 billion people are affected by infestations with soil-transmitted helminths and also in veterinary medicine helminthiases are a severe threat to livestock due to emerging resistances against the common anthelmintics. Proanthocyanidins have been increasingly investigated for their anthelmintic properties, however, except for an interaction with certain proteins of the nematodes, not much is known about their mode of action. To investigate the anthelmintic activity on a molecular level, a transcriptome analysis was performed in Caenorhabditis elegans after treatment with purified and fully characterized oligomeric procyanidins (OPC)...
2017: PloS One
https://www.readbyqxmd.com/read/28924722/evaluation-of-heme-oxygenase-1-ho-1-in-cd-and-ni-induced-cytotoxicity-and-crosstalk-with-ros-quenching-enzymes-in-two-to-four-leaf-stage-seedlings-of-vigna-radiata
#10
Lovely Mahawar, Rajesh Kumar, Gyan Singh Shekhawat
Research on heme oxygenase in plants has received consideration in recent years due to its several roles in development, defense, and metabolism during various environmental stresses. In the current investigation, the role of heme oxygenase (HO) 1 was evaluated in reducing heavy metal (Cd and Ni) uptake and alleviating Cd and Ni toxicity effects in the hydroponically grown seedlings of Vigna radiata var. PDM 54. Seedlings were subjected to Cd- and Ni-induced oxidative stress independently at different concentrations ranging from 10 to 100 μM...
September 18, 2017: Protoplasma
https://www.readbyqxmd.com/read/28912786/co-infection-of-sweet-orange-with-severe-and-mild-strains-of-citrus-tristeza-virus-is-overwhelmingly-dominated-by-the-severe-strain-on-both-the-transcriptional-and-biological-levels
#11
Shimin Fu, Jonathan Shao, Changyong Zhou, John S Hartung
Citrus tristeza is one of the most destructive citrus diseases and is caused by the phloem-restricted Closterovirus, Citrus tristeza virus. Mild strain CTV-B2 does not cause obvious symptoms on indicators whereas severe strain CTV-B6 causes symptoms, including stem pitting, cupping, yellowing, and stiffening of leaves, and vein corking. Our laboratory has previously characterized changes in transcription in sweet orange separately infected with CTV-B2 and CTV-B6. In the present study, transcriptome analysis of Citrus sinensis in response to double infection by CTV-B2 and CTV-B6 was carried out...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28881317/modulation-of-antioxidative-defense-expression-and-osmolyte-content-by-co-application-of-24-epibrassinolide-and-salicylic-acid-in-pb-exposed-indian-mustard-plants
#12
Sukhmeen Kaur Kohli, Neha Handa, Shagun Bali, Saroj Arora, Anket Sharma, Ravdeep Kaur, Renu Bhardwaj
The study focuses on potential of combined pre-soaking treatment of 24-Epibrassinolide (EBL) and Salicylic acid (SA) in alleviating Pb phytotoxicity in Brassica juncea L. plants. The seeds after treatment with combination of both the hormones were sown in mixture of soil, sand and manure (3:1:1) and were exposed to Pb concentrations (0.25mM, 0.50mM and 0.75mM). After 30 days of growth, the plants were harvested and processed, for quantification of various metabolites. It was found that pre-sowing of seeds in combination of EBL and SA, mitigated the adverse effects of metal stress by modulating antioxidative defense response and enhanced osmolyte contents...
January 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28875293/nickel-accumulation-and-its-effect-on-growth-physiological-and-biochemical-parameters-in-millets-and-oats
#13
Vibha Gupta, Pradeep Kumar Jatav, Raini Verma, Shanker Lal Kothari, Sumita Kachhwaha
With the boom in industrialization, there is an increase in the level of heavy metals in the soil which drastically affect the growth and development of plants. Nickel is an essential micronutrient for plant growth and development, but elevated level of Ni causes stunted growth, chlorosis, nutrient imbalance, and alterations in the defense mechanism of plants in terms of accumulation of osmolytes or change in enzyme activities like guiacol peroxidase (POD), catalase (CAT), and superoxide dismutase (SOD). Ni-induced toxic response was studied in seedlings of finger millet, pearl millet, and oats in terms of seedling growth, lipid peroxidation, total chlorophyll, proline content, and enzymatic activities...
October 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28867596/relationship-between-aluminum-stress-and-caffeine-biosynthesis-in-suspension-cells-of-coffea-arabica-l
#14
Roberto Pech-Kú, J Armando Muñoz-Sánchez, Miriam Monforte-González, Felipe Vázquez-Flota, Beatriz A Rodas-Junco, Víctor M González-Mendoza, S M Teresa Hernández-Sotomayor
Toxicity by aluminum is a growth-limiting factor in plants cultivated in acidic soils. This metal also promotes signal transduction pathways leading to the biosynthesis of defense compounds, including secondary metabolites. In this study, we observed that Coffea arabica L. cells that were kept in the dark did not produce detectable levels of caffeine. However, irradiation with light and supplementation of the culture medium with theobromine were the best conditions for cell maintenance to investigate the role of aluminum in caffeine biosynthesis...
July 29, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28759767/heavy-metals-in-contaminated-environment-destiny-of-secondary-metabolite-biosynthesis-oxidative-status-and-phytoextraction-in-medicinal-plants
#15
REVIEW
Behnam Asgari Lajayer, Mansour Ghorbanpour, Shahab Nikabadi
Contamination of soils, water and air with toxic heavy metals by various human activities is a crucial environmental problem in both developing and developed countries. Heavy metals could be introduced into medicinal plant products through contaminated environment (soil, water and air resources) and/or poor production practices. Growing of medicinal plants in heavy metal polluted environments may eventually affect the biosynthesis of secondary metabolites, causing significant changes in the quantity and quality of these compounds...
July 28, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28730330/effect-of-the-phosphogypsum-amendment-of-saline-and-agricultural-soils-on-growth-productivity-and-antioxidant-enzyme-activities-of-tomato-solanum-lycopersicum-l
#16
Mariem Smaoui-Jardak, Walid Kriaa, Mohamed Maalej, Mohamed Zouari, Lotfi Kamoun, Wassim Trabelsi, Ferjani Ben Abdallah, Nada Elloumi
The objective of this study was to investigate the effects of phosphogypsum (PG) amendment on the physiochemical proprieties of saline and agricultural soils along with the growth, productivity and antioxidant enzyme activities of tomato plants ( Solanum lycopersicum L.) grown on the amended soils under controlled conditions. Obtained results showed that the amendment of saline soil (H) by PG induced a decrease in pH as well as in electrical conductivity. However, for the non saline soil (MC), there was a decrease in pH associated with an increase in electrical conductivity...
July 20, 2017: Ecotoxicology
https://www.readbyqxmd.com/read/28726715/overexpression-of-the-osimp-gene-increases-the-accumulation-of-inositol-and-confers-enhanced-cold-tolerance-in-tobacco-through-modulation-of-the-antioxidant-enzymes-activities
#17
Rong-Xiang Zhang, Li-Jun Qin, De-Gang Zhao
Inositol is a cyclic polyol that is involved in various physiological processes, including signal transduction and stress adaptation in plants. l-myo-inositol monophosphatase (IMPase) is one of the metal-dependent phosphatase family members and catalyzes the last reaction step of biosynthesis of inositol. Although increased IMPase activity induced by abiotic stress has been reported in chickpea plants, the role and regulation of the IMP gene in rice (Oryza sativa L.) remains poorly understood. In the present work, we obtained a full-length cDNA sequence coding IMPase in the cold tolerant rice landraces in Gaogonggui, which is named as OsIMP...
July 20, 2017: Genes
https://www.readbyqxmd.com/read/28708985/ultrastructural-protein-and-photosynthetic-alterations-induced-by-pb-and-cd-in-cynara-cardunculus-l-and-its-potential-for-phytoremediation
#18
C Arena, F Figlioli, M C Sorrentino, L G Izzo, F Capozzi, S Giordano, V Spagnuolo
The effects of cadmium and lead were investigated in Cynara cardunculus L. Plant uptake by root and shoot, changes in cell ultrastructure and photosynthetic efficiency, photosynthetic key protein levels, as well as regulation of stress-induced Hsp70 were examined. Cynara cardunculus accumulated Cd and Pb in their tissue, with a different trend for the two metals. The prompt translocation of Cd to the shoot may justify the ultrastructural injuries, especially observed in chloroplasts. However, Cd- treated plants did not show any decline in photochemistry; it is likely that Cd in shoot tissue triggers defense mechanisms, increasing the level of proteins involved in photosynthesis (i...
July 11, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28670772/the-ca-2-calmodulin2-binding-transcription-factor-tga3-elevates-lcd-expression-and-h2-s-production-to-bolster-cr-6-tolerance-in-arabidopsis
#19
Huihui Fang, Zhiqiang Liu, Yanping Long, Yali Liang, Zhuping Jin, Liping Zhang, Danmei Liu, Hua Li, Jixian Zhai, Yanxi Pei
Heavy metal (HM) contamination on agricultural land not only reduces crop yield but also causes human health concerns. As a plant gasotransmitter, hydrogen sulfide (H2 S) can trigger various defense responses and help reduce accumulation of HMs in plants; however, little is known about the regulatory mechanisms of H2 S signaling. Here, we provide evidence to answer the long-standing question about how H2 S production is elevated in the defense of plants against HM stress. During the response of Arabidopsis to chromium (Cr(6+) ) stress, the transcription of L-cysteine desulfhydrase (LCD), the key enzyme for H2 S production, was enhanced through a calcium (Ca(2+) )/calmodulin2 (CaM2)-mediated pathway...
July 3, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28647606/role-of-streptomyces-pactum-in-phytoremediation-of-trace-elements-by-brassica-juncea-in-mine-polluted-soils
#20
Amjad Ali, Di Guo, Amanullah Mahar, Zhen Wang, Dost Muhammad, Ronghua Li, Ping Wang, Feng Shen, Quanhong Xue, Zengqiang Zhang
The industrial expansion, smelting, mining and agricultural practices have increased the release of toxic trace elements (TEs) in the environment and threaten living organisms. The microbe-assisted phytoremediation is environmentally safe and provide an effective approach to remediate TEs contaminated soils. A pot experiment was conducted to test the potential of an Actinomycete, subspecies Streptomyces pactum (Act12) along with medical stone compost (MSC) by growing Brassica juncea in smelter and mines polluted soils of Feng County (FC) and Tongguan (TG, China), respectively...
June 22, 2017: Ecotoxicology and Environmental Safety
keyword
keyword
108756
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"