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https://www.readbyqxmd.com/read/28813005/identification-and-functional-divergence-analysis-of-wox-gene-family-in-paper-mulberry
#1
Feng Tang, Naizhi Chen, Meiling Zhao, Yucheng Wang, Ruiping He, Xianjun Peng, Shihua Shen
The WOX (WUSCHEL-related homeobox) is a plant-specific transcription factor involved in plant development and stress response. However, few studies have been reported on the WOX gene in woody plants. In this study, 10 BpWOX genes were isolated from paper mulberry by RACE-PCR and categorized into three clades through phylogenetic analysis, ancient, intermediate and WUS clade. Among them, five members had the transcriptional activity detected by yeast one-hybrid and seven were uniquely localized to the nucleus through green fluorescent protein (GFP) observation...
August 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28808815/physiological-responses-and-antioxidant-enzyme-changes-in-sulla-coronaria-inoculated-by-cadmium-resistant-bacteria
#2
Manel Chiboub, Salwa Harzalli Jebara, Omar Saadani, Imen Challougui Fatnassi, Souhir Abdelkerim, Moez Jebara
Plant growth promoting bacteria (PGPB) may help to reduce the toxicity of heavy metals on plants growing in polluted soils. In this work, Sulla coronaria inoculated with four Cd resistant bacteria (two Pseudomonas spp. and two Rhizobium sullae) were cultivated in hydroponic conditions treated by Cd; long time treatment 50 µM CdCl2 for 30 days and short time treatment; 100 µM CdCl2 for 7 days. Results showed that inoculation with Cd resistant PGPB enhanced plant biomass, thus shoot and root dry weights of control plants were enhanced by 148 and 35% respectively after 7 days...
August 14, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28808325/phytoremediation-potential-of-acorus-calamus-in-soils-co-contaminated-with-cadmium-and-polycyclic-aromatic-hydrocarbons
#3
Nasreen Jeelani, Wen Yang, Lingqian Xu, Yajun Qiao, Shuqing An, Xin Leng
Phytoremediation is a promising technology for the remediation of sites co-contaminated with inorganic (heavy metal) and organic pollutants. A greenhouse experiment was conducted to investigate the independent and interactive effects of cadmium (Cd) and polycyclic aromatic hydrocarbons (PAHs) on the growth of the wetland plant Acorus calamus and its ability to uptake, accumulate, and remove pollutants from soils. Our results showed that growth and biomass of A. calamus were significantly influenced by the interaction of Cd and PAHs after 60 days of growth...
August 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28803379/effects-of-live-myriophyllum-aquaticum-and-its-straw-on-cadmium-accumulation-in-nasturtium-officinale
#4
Kewen Huang, Lijin Lin, Fabo Chen, Ming'an Liao, Jin Wang, Yi Tang, Yunsong Lai, Dong Liang, Hui Xia, Xun Wang, Wei Ren
The purpose of this study is to determine whether the allelopathy of living Myriophyllum aquaticum and its straw has the same effects; two pot experiments were conducted to study the effects of intercropping using M. aquaticum and its straw on the growth and cadmium (Cd) accumulation of Nasturtium officinale. Different planting ratios (1:3, 2:2 and 3:1) of N. officinale and M. aquaticum led to an increase in the biomass of both plant species and increased the Cd content in roots and shoots of N. officinale, but led to a reduction in the Cd content in roots and shoots of M...
August 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28799933/heavy-metal-content-of-swedish-municipal-wastewater-sludge-status-and-goals
#5
A Mattsson, A Finnson, D I'Ons
In 2014, 25% of the sludge produced at Swedish municipal wastewater treatment plants was applied to agricultural land. Even though the Swedish heavy metal limits for sludge to be used in agriculture are amongst the most stringent in the EU, more stringent heavy metal limits are proposed. Most sludge applied to agricultural land is recycled within a certification system, Revaq. Revaq has targets for control at source management and improvement of sludge quality. Statistics based on data collected within the Revaq system was used to differentiate between local and general sources of heavy metals and assess the need to improve sludge quality...
August 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28798767/in-arabidopsis-thaliana-cadmium-impact-on-the-growth-of-primary-root-by-altering-scr-expression-and-auxin-cytokinin-cross-talk
#6
Leonardo Bruno, Marianna Pacenza, Ivano Forgione, Liam R Lamerton, Maria Greco, Adriana Chiappetta, Maria B Bitonti
Cadmium is one of the most widespread pollutant in both terrestrial and marine environment, and its inhibitory effect on plant growth has been largely demonstrated. However, the molecular mechanisms underlying Cd toxicity in plant and mainly in root, as the first organ sensing soil heavy metals, need to be better investigated. To this aim, in the present work we analyzed the growth and the organization of Arabidopsis thaliana primary root in seedlings exposed to Cd (25 and 50 μM) for 8 days starting from germination...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28793366/cadmium-induced-melatonin-synthesis-in-rice-requires-light-hydrogen-peroxide-and-nitric-oxide-key-regulatory-roles-for-tryptophan-decarboxylase-and-caffeic-acid-o-methyltransferase
#7
Kyungjin Lee, Geun-Hee Choi, Kyoungwhan Back
In plants, melatonin production is induced by stimuli such as cold and drought, and cadmium (Cd) is the best elicitor of melatonin production in rice. However, the mechanism by which Cd induces melatonin synthesis in plants remains unknown. We challenged rice seedlings with Cd under different light conditions and found that continuous light produced the highest levels of melatonin, while continuous dark failed to induce melatonin production. Transcriptional and translational induction of tryptophan decarboxylase contributed to the light induction of melatonin during Cd treatment, whereas the protein level of light-induced caffeic acid O-methyltransferase (COMT) was decreased by Cd treatment...
August 9, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28791597/biochar-increased-photosynthetic-and-accessory-pigments-in-tomato-solanum-lycopersicum-l-plants-by-reducing-cadmium-concentration-under-various-irrigation-waters
#8
Muhammad Abid, Subhan Danish, Muhammad Zafar-Ul-Hye, Muhammad Shaaban, Muhammad Mutahir Iqbal, Abdur Rehim, Muhammad Farooq Qayyum, Muhammad Nadir Naqqash
Fresh surface water supplies are gradually becoming insufficient in arid and semi-arid regions of the world. Thus, farmers in these areas are being forced to use poor quality sewage water. Irrigating vegetable crops with sewage water having high metal concentration may affect growth and biochemical processes of plants. Biochar (BC) can sorb these metals and may reduce their toxic effects on plants. Thus, a greenhouse experiment was conducted to study the influence of cotton stalks derived biochar (CSDB) at control (0%) and 1%; ground water (GW; 0...
August 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28791581/phytoextraction-of-potentially-toxic-elements-by-six-tree-species-growing-on-hazardous-mining-sludge
#9
Mirosław Mleczek, Piotr Goliński, Magdalena Krzesłowska, Monika Gąsecka, Zuzanna Magdziak, Paweł Rutkowski, Sylwia Budzyńska, Bogusława Waliszewska, Tomisław Kozubik, Zbigniew Karolewski, Przemysław Niedzielski
The aim of the study was to compare the phytoextraction abilities of six tree species (Acer platanoides L., Acer pseudoplatanus L., Betula pendula Roth, Quercus robur L., Tilia cordata Miller, Ulmus laevis Pall.), cultivated on mining sludge contaminated with arsenic (As), cadmium (Cd), copper (Cu), lead (Pb), thallium (Tl), and zinc (Zn). All six tree species were able to survive on such an unpromising substrate. However, A. platanoides and T. cordata seedlings grown on the polluted substrate showed significantly lower biomass than control plants (55...
August 9, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28783779/effects-of-lime-and-organic-amendments-derived-from-varied-source-materials-on-cadmium-uptake-by-potato
#10
Shamim Al Mamun, Niklas J Lehto, Jo Cavanagh, Richard McDowell, Munmun Aktar, Ebrahim Benyas, Brett H Robinson
Repeated applications of Cd-rich phosphate fertilizers have resulted in elevated concentrations of this toxic element in some New Zealand soils. Exceedance of the food safety standard for Cd (0.1 mg kg fresh weight) has been reported for potato ( L.). Composts may efficiently sorb Cd in soil and therefore reduce its phytoavailability, leading to reduced uptake by plants. We aimed to determine the potential of various composts, shredded corn stover, and lime at two different rates to reduce the transfer of Cd from a soil (containing 1...
July 2017: Journal of Environmental Quality
https://www.readbyqxmd.com/read/28783599/root-endophytic-fungus-piriformospora-indica-affected-growth-cadmium-partitioning-and-chlorophyll-fluorescence-of-sunflower-under-cadmium-toxicity
#11
Saleh Shahabivand, Azar Parvaneh, Ali Asghar Aliloo
Cadmium (Cd) pollution in the soil threatens the quality of environmental health, and deleteriously affects physiological activities of crops. Symbiosis of endophytic fungi with various plants is a promising manner to improving numerous plant characteristics and remediating heavy metal-polluted soils. In this pot experiment, the influence of root endophyte fungus Piriformospora indica on growth, physiological parameters and organs Cd accumulation in sunflower cv. Zaria plants under the toxic levels of Cd (0, 40, 80 and 120mg/kg soil) were studied...
August 4, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28780693/foliar-application-of-aspartic-acid-lowers-cadmium-uptake-and-cd-induced-oxidative-stress-in-rice-under-cd-stress
#12
Muhammad Rizwan, Shafaqat Ali, Muhammad Zaheer Akbar, Muhammad Bilal Shakoor, Abid Mahmood, Wajid Ishaque, Afzal Hussain
Cadmium (Cd) contamination of farmland soils is a widespread problem around the globe, and rice (Oryza sativa L.) tends to accumulate more Cd and is considered as one of the major sources of Cd intake in humans, especially consuming rice-derived products. The current study investigated the effects of foliar applied aspartic acid (Asp) on growth parameters, biomass, chlorophyll concentration, gas exchange characteristics, Cd uptake, and antioxidative capacity in the shoots and roots of rice seedlings exposed to Cd stress...
August 6, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28780445/castasterone-and-citric-acid-treatment-restores-photosynthetic-attributes-in-brassica-juncea-l-under-cd-ii-toxicity
#13
Ravdeep Kaur, Poonam Yadav, Anket Sharma, Ashwani Kumar Thukral, Vinod Kumar, Sukhmeen Kaur Kohli, Renu Bhardwaj
Cadmium(II) toxicity is a serious environmental issue warranting effective measures for its mitigation. In the present study, ameliorative effects of a bioactive brassinosteroid, castasterone (CS) and low molecular weight organic acid, citric acid (CA) against the Cd(II) toxicity to Brassica juncea L. were evaluated. Seeds of B. juncea treated with CS (0, 0.01, 1 and 100nM) were sown in cadmium spiked soils (0 and 0.6mmolkg(-1) soil). CA (0.6mmolkg(-1)soil) was added to soil one week after sowing seeds. Plants were harvested 30 days after sowing...
August 3, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28776297/physiological-mechanisms-of-a-wetland-plant-echinodorus-osiris-rataj-to-cadmium-detoxification
#14
Peng Zhang, He Huang, Wanru Liu, Chaolan Zhang
Physiological responses of Echinodorus osiris Rataj plant under cadmium (Cd) stress (5 and 15 mg L(-1)) were studied by researching the change of non-enzymatic antioxidants and the exudation of root organic acids. There was a significant increase of ascorbic acid, glutathione, and non-protein thiols in the plant, and the increment was much obvious in roots than that in leaves with increased Cd stress. The accumulation of Cd was associated with mitochondrial structural damages in roots, while the organelle structure, such as chloroplast, in leaves remains intact...
August 3, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28775260/phytoextraction-of-cadmium-contaminated-soil-and-potential-of-regenerated-tobacco-biomass-for-recovery-of-cadmium
#15
Yang Yang, Yichen Ge, Hongyuan Zeng, Xihong Zhou, Liang Peng, Qingru Zeng
The aim of this study was to estimate the influence of regenerated tobacco on the extraction of Cd from two acidic soils as well as to address the problem of how to deal with contaminated leaves following phytoextraction. Results showed that a coppicing tobacco led to a decline in Cd concentration in regenerated leaves and stalks when plants were grown in pots, but increased concentrations in regenerated lower and middle leaves when plants were grown under field conditions. The highest recorded bioconcentration factors in Chaling and Guanxi soil were 37...
August 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28771007/thymol-ameliorates-cadmium-induced-phytotoxicity-in-the-root-of-rice-oryza-sativa-seedling-by-decreasing-endogenous-nitric-oxide-generation
#16
Ting-Ting Wang, Zhi Qi Shi, Liang-Bin Hu, Xiao-Feng Xu, Fengxiang X Han, Ligang Zhou, Jian Chen
Thymol has been developed as medicine and food preservative due to its immune-regulatory effect and anti-microbial activity, respectively. However, little is currently known about the role of thymol in the modulation of plant physiology. In the present study, we applied biochemical and histochemical approaches to investigate thymol-induced tolerance in rice (Oryza sativa) seedlings against Cd (cadmium) stress. Thymol at 20 μM recovered root growth completely upon CdCl2 exposure. Thymol pronouncedly decreased Cd-induced ROS accumulation, oxidative injury, cell death, and Cd2+ accumulation in roots...
August 3, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28763635/effect-of-corrosion-inhibitor-benzotriazole-on-the-uptake-and-translocation-of-cd-in-rice-oryza-sativa-l-under-different-exposure-conditions
#17
Zhen Liu, Lei Wang, Chenye Wang, Shujuan Sun, Li Qin, Yi An, Yanshuai Xing, Hongwen Sun
Emerging contaminants that can complex with heavy metals might affect the speciation of coexisting metals and result in different ecological risks. As a widely used metal corrosion inhibitor, 1H-benzotriazole (BTR) is frequently detected in the environments, sometimes at very high levels. In this study, rice (Oryza sativa L.) was used to assess the ecological risk of combined exposure to cadmium (Cd) and BTR in plants and discuss the potential effects of exposure sequence on the uptake and translocation of Cd under hydroponic culture...
July 27, 2017: Chemosphere
https://www.readbyqxmd.com/read/28760553/genome-wide-identification-of-sweet-orange-citrus-sinensis-metal-tolerance-proteins-and-analysis-of-their-expression-patterns-under-zinc-manganese-copper-and-cadmium-toxicity
#18
Xing-Zheng Fu, Ya-Hua Tong, Xue Zhou, Li-Li Ling, Chang-Pin Chun, Li Cao, Ming Zeng, Liang-Zhi Peng
Plant metal tolerance proteins (MTPs) play important roles in heavy metal homeostasis; however, related information in citrus plants is limited. Citrus genome sequencing and assembly have enabled us to perform a systematic analysis of the MTP gene family. We identified 12 MTP genes in sweet orange, which we have named as CitMTP1 and CitMTP3 to CitMTP12 based on their sequence similarity to Arabidopsis thaliana MTPs. The CitMTPs were predicted to encode proteins of 864 to 2556 amino acids in length that included 4 to 6 putative transmembrane domains (TMDs)...
July 28, 2017: Gene
https://www.readbyqxmd.com/read/28759768/identification-for-the-capability-of-cd-tolerance-accumulation-and-translocation-of-96-sorghum-genotypes
#19
Weitao Jia, Fangfang Miao, Sulian Lv, Juanjuan Feng, Shufeng Zhou, Xuan Zhang, Duoliya Wang, Shizhong Li, Yinxin Li
Cadmium (Cd) pollution is a worldwide environmental problem which heavily threatens human health and food security. Sorghum, as one of the most promising energy crop, has been considered to be the source of high-quality feedstock for ethanol fuel. Ninety-six sorghum genotypes were investigated under hydroponic conditions to compare their capabilities of Cd-tolerance, accumulation and translocation for their potential in remediation of Cd contamination. Different genotypes varied largely in the tolerance to Cd stress with tolerance indexes ranked from 0...
July 28, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28758909/exogenous-gr24-alleviates-cadmium-toxicity-by-reducing-cadmium-uptake-in-switchgrass-panicum-virgatum-seedlings
#20
Zhenglan Tai, Xinqiang Yin, Zhigang Fang, Gaoling Shi, Laiqing Lou, Qingsheng Cai
Strigolactones (SLs) are classified into plant hormones, playing a key role as a mediator of plant growth in response to several abiotic stresses, including drought and salinity. However, the role of SLs in cadmium (Cd)-induced stress to plants is still unknown. The physiological responses of switchgrass (Panicum virgatum) stressed in 10 μmol L(-1) Cd to exogenous synthetic SLs analog, GR24 were studied in hydroponics. The Cd stress significantly caused the adverse effects on plant growth and root morphology, inhibited photosynthesis, but boosted lipid peroxidation of Switchgrass seedlings...
July 29, 2017: International Journal of Environmental Research and Public Health
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