Plant and Soil

Sun, 05/23/2021 - 02:01
Abstract Purpose To study the adaptive potential of the plant Typha laxmannii Lepech. to heavy metal (HM) stress on the basis of analysis of its morphological and anatomical features under the conditions of an anthropogenically transformed ecosystem of the Don River Delta. Methods The soils on the monitored plots are of the Fluvisol type. The soil characteristics and total concentrations of Mn...
Tue, 05/18/2021 - 02:01
Abstract Background and aims In China and several other rice growing countries, lime application is a common practice to alleviate soil acidification in rice paddies. Liming may also reduce the concentration of the common toxin Cadmium (Cd) in rice plants. We evaluated to what extent lime application affects rice yield and grain Cd concentration. Methods We conducted a meta-analysis to...
Tue, 05/11/2021 - 02:01
Abstract Purpose To investigate whether soil clay content, cultivar and seasonal variation have any effect on soil CO2 emission rates and leaf CO2 assimilation rates in a drip-irrigated commercial Citrus sinensis orchard. Methods The study was carried out in the field as a randomised complete block design in a 2 × 2 factorial consisting of two soil types and two citrus cultivars on a drip-...
Thu, 04/22/2021 - 02:01
Abstract Background Environmental approaches for minimizing wheat grain Cd are urgently in need in many parts of the world. While metal-removing strategies like phytoextraction or soil-washing are not suitable to the scenario of farmland Cd pollution, rhizoremediation which aims to reduce crops’ Cd uptake by using microbial technology has shown great potentials. Methods and results In this...
Thu, 04/22/2021 - 02:01
Abstract Aims There is little information available on the potential influence of soil micro-arthropods on the phytoremediation of metal-contaminated soils using hyperaccumulator plants. We hypothesized that soil micro-arthropods may promote organic matter decomposition, thereby releasing nitrogen and enhancing the growth of and metal uptake by hyperaccumulators and thereby increase...
Wed, 04/14/2021 - 02:01
Abstract Background and aims Soil pollution by heavy metals is a worldwide environmental concern. Owing to their proximity to sources of anthropogenic emission, urban forest fragments are highly affected by the excessive input of heavy metals into the soil. Thus, this study aimed to assess the physiological and biochemical responses of two native Brazilian Atlantic Forest tree species, Schinus...
Thu, 03/18/2021 - 02:01
Abstract Purpose This study aimed to explore the phytoremediation potential of Salvia tiliifolia for cadmium (Cd)-contaminated soils and to understand the interactions in soil-Cd-plant systems. Methods We assessed the Cd tolerance and accumulation characteristics of S. tiliifolia grown in soils with 0, 5, 25, and 50 mg kg− 1 Cd for 3 months. We also analysed the changes in physicochemical...
Mon, 03/01/2021 - 02:01
Abstract Background and aims Rice accumulates higher levels of cadmium (Cd) in grain than other cereals, and hybrid rice varieties cover around half of the total rice area in China. Therefore, understanding the phenotypic and genetic characteristics of Cd accumulation in rice hybrids is vital for food safety. Methods An incomplete diallel cross design was used to analyse the heritability and...
Sun, 02/21/2021 - 02:01
Abstract Background and aim Plant pathogenic and mycotoxin-producing Fusarium species are globally widespread and lead to large annual yield losses in maize production (ecosystem disservice). Systems with reduced tillage and mulching are particularly under threat. In the present study, the bioregulatory performance (ecosystem service) of the common earthworm species Lumbricus terrestris was...
Wed, 02/10/2021 - 02:01
Abstract Aims Intercropping promoted land productivity and be performed worldwide. This study aimed to assess the effect of intercropping on soil dissolved organic carbon (DOC) and its nitrogen (N) regulation. Methods The potato was monocropped and intercropped with maize under four N levels (0, 62.5, 125 and 187.5 kg ha−1 for N0, N1, N2 and N3, respectively) in a fixed plot experiment from...
Sat, 01/30/2021 - 02:01
Abstract Aims Residues of antibiotics such as oxytetracycline (OTC) in soil can affect microbial compositions and activities, thus affecting soil P availability, and consequently plant P uptake and growth. Methods A pot experiment was performed to grow alfalfa in a loess soil with different doses of P (0, 25, 50, and 100 mg kg−1) and OTC (0, 25, 50, and 100 mg kg−1). Plant dry mass, shoot and...
Sat, 01/09/2021 - 02:01
Abstract Aims We propose a thorough study of the succulent halophyte Sarcocornia carinata endemic to the saline lagoons of the center of the Iberian Peninsula. We describe its elemental composition and possible seasonal variation in relation to edaphic and climatic variables, identify biominerals and analyze the distribution of salt ions and biominerals in tissue. Methods Plants and edaphic...
Fri, 09/25/2020 - 02:01
The heavy metal concentration in plant tissues of Ranunculus ficaria, Plantago major, Taraxacum officinale, and Achillea millefolium, frequently consumed or used in traditional medicine, collected from one of radioactive area of Romania, not been previously reported by any research group. The content of Cr, Mn, Ni, Cu, Zn, Cd, Pb were determined by ICP-MS. To evaluate the level of pollution, the...
Wed, 09/23/2020 - 02:01
Abstract Aims Mediterranean shrublands adjacent to urbanization experience nitrogen deposition and exotic grass invasions which likely have downstream consequences for carbon and nitrogen emissions from soils. We tested a hypothesis that soil wetting produces trace gas pulses modified by seasonal wetting history, grass litter availability, and cover type in these systems. Methods Over two...
Tue, 09/15/2020 - 02:01
Abstract Aims This research aimed to establish how Hordeum vulgare responds to abiotic and biotic stress affecting in tandem. Methods Plants were inoculated with Heterodera filipjevi and treated with cadmium (Cd) concentration (5 μM) that can occur in the cultivated soil. To verify the hypothesis about participation of increased antioxidative defence in H. vulgare under stress, biochemical and...
Sun, 08/23/2020 - 02:01
Abstract Aims For a metal hyperaccumulator plant Sedum alfredii, the recruitment of unique rhizospheric bacterial communities from bulk soils has been well studied. However, in the root-soil interface, the knowledge on the establishment of endospheric microbiomes from rhizospheric soil is still scarce. Methods In this study, we combined culture-independent that was 16S rRNA gene amplicon...
Fri, 08/21/2020 - 02:01
Abstract Aims Lead is a hazardous heavy metal pollutant present in the environment, and iron is an essential micronutrient with numerous cellular functions in normal physiology. However few studies have focused on the influence and interaction of lead and iron changes during plant growth. So the present study investigated the mechanism how lead and iron affected in upland rice (Oryza sativa L.)...
Tue, 08/18/2020 - 02:01
Abstract Aims Arbuscular mycorrhizal fungi (AMF) can enhance cadmium (Cd) tolerance and decrease Cd uptake of rice plant. However, in these processes, the essential role of reactive oxygen species (ROS)-antioxidants interactions is so far not investigated. Methods We inoculated AMF, Funneliformis mosseae (Fm) and Rhizophagus intraradices (Ri), to upland rice subjected to 0, 2 or 10 mg Cd kg−1...
Sat, 07/11/2020 - 02:01
Abstract Background and aims Large areas of paddy fields have been contaminated by cadmium (Cd) in both China and worldwide, resulting in excessive Cd accumulation in rice grains. Here, we investigated the effects of cultivars, water regimes, and growth stages on Cd accumulation in rice with different radial oxygen loss (ROL). Methods Two groups of experiments were conducted: pot trials with...
Wed, 07/01/2020 - 02:01
Abstract Aims Na+/H+ antiporter (NHX1) was reported to be induced by NaCl in plants and NaCl can alleviate the toxic effect in plants caused by cadmium (Cd). However, it is unknown whether the NHX1 gene is involved in Cd adaptation in plants. This study aimed to explore the relationship between Cd resistance and NHX1 in plants. Methods SseNHX1 gene obtained by shuffling using SsNHX1 from...
Mon, 06/22/2020 - 02:01
Abstract Aims Phragmites australis grows as a pioneer plant species in several mine and flotation tailings ponds distinguished by extremely high concentrations of metals. The main goals of this study were to estimate the effects of the specific concentrations and combinations of accumulated metals on the efficiency of antioxidative enzymes and plant oxidative status. This study is relevant to...
Thu, 06/18/2020 - 02:01
Abstract Aims Citrus trees are subjected to variation of environmental conditions throughout the annual cycle, especially during the flowering and fruit set. Heat waves have affected the environmental conditions required for optimum crop growth and have reduced fruit yield and quality worldwide. This study aimed to evaluate an extra supply of magnesium (Mg) and/or nitrogen (N) to increase citrus...
Sat, 06/13/2020 - 02:01
Abstract Aims The study aimed at characterizing the patterns of natural variation in the tolerance and accumulation capacities for zinc (Zn), cadmium (Cd), and nickel (Ni) between and within edaphic ecotypes of the Zn/Cd/Ni hyperaccumulator, Noccaea caerulescens. Methods Tolerance was assessed in a hydroponic ‘sequential exposure’ test, using the lowest concentration that completely arrested...
Wed, 05/27/2020 - 03:22
Abstract Background and aims Dark septate endophytes (DSE) are a group of multifunctional fungi that ubiquitously colonize the roots of numerous plants worldwide, benefiting the nutrition and adaptation of hosts to various stressed environments. How DSE benefit phosphorus absorption by their host plants remains unclear. Methods We established pot cultures and compartmentalized microcosms in...
Wed, 05/27/2020 - 03:22
Abstract Aims This study aims to understand the mechanism by which grafting tomato (Solanum lycopersicum) onto Torubamu (Solanum melongena) reduces cadmium (Cd) accumulation in tomato. Methods Tomato plants were grafted onto Torubamu rootstocks, and both the un-grafted and grafted tomato plants were grown in the control soil and soil that contained 2.0 or 5.0 mg•kg−1 Cd for 30 d. Results...
Fri, 05/22/2020 - 03:22
Abstract Aims Microbial inoculation has been proposed as a potential approach for rhizosphere engineering. However, it is still unclear to what extent successful plant growth-promoting effects are driven by the origin of the microbial inocula and which taxa are responsible for the plant-beneficial effects. Methods We conducted a microbial transplant experiment by using different microbial...
Wed, 04/08/2020 - 03:20
Abstract Aims Metal hyperaccumulation is a rare phenomenon described for an increasing number of plant taxa. In this study we investigated the root growth responses of the well-known nickel, zinc, cadmium hyperaccumulator Noccaea caerulescens and of the metal tolerant (non-accumulator) Stellaria media, in order to observe root foraging vs avoidance responses to nickel.  Methods To allow for...
Mon, 03/23/2020 - 03:17
Abstract Background Phytoextraction is an in situ technique that can be applied to minerals and mining wastes using hyperaccumulator plants to purposely bio-concentrate high levels of metals or metalloids into their shoots in order to remove them from the substrate, while achieving monetary gain. Phytoextraction can be applied to a limited number of elements depending on the existence of...
Sun, 03/15/2020 - 03:25
Abstract Aims Carbon (C) and nitrogen (N) cycling are key ecosystem functions potentially altered by heavy metal pollution. We used an ecosystem approach to study the long-term effect of lead (Pb) on C and N cycles in a natural grassland in a former shooting range. Methods Microbial activity was evaluated by substrate-induced respiration (SIR) in situ, adding isotopically labelled C4-sugar to...
Tue, 03/03/2020 - 03:15
Abstract Background With continuing industrial pollution and other human activities, the problem of heavy metal pollution in the environment is becoming more and more serious. Because heavy metal toxicity does not only inhibit plant growth but also causes many adverse health conditions in humans, heavy metal pollution poses a great challenge across the global. As a food security issue, how to...
Fri, 02/14/2020 - 03:14
Abstract Aims Polygonum hydropiper L. and Polygonum lapathifolium L. are two of the well-known indigenous Mn-hyperaccumulators. Enterobacter sp. FM-1 is a plant growth-promoting bacterium (PGPB) that we found in our previous study. We intended to develop a novel strategy to improve Mn and Cd co-contaminated soil phytoremediation by using a Mn and Cd-resistant bacterium for soil bioaugmentation...
Tue, 01/14/2020 - 03:14
Abstract Background and aims Cadmium (Cd) is one of the heavy metal elements that are most harmful to human health, and the transmission of Cd through the food chain is a global issue. Aegilops markgrafii is a wild relative of the cultivated wheat that is tolerant of high levels of Cd. The objective of this study is to investigate the NAC transcription factors (TFs) involved in Cd tolerance in...
Thu, 12/19/2019 - 03:16
Abstract Aims Data on the variability of hyperaccumulation potential of the facultative serpentinophytes Noccaea kovatsii and N. praecox on different geological substrates are scarce. The aim of this study was to assess the accumulation potential of these two species from ultramafic and non-ultramafic substrates, with special emphasis on the hyperaccumulation of Ni, Zn and Cd. Methods Samples...
Thu, 12/05/2019 - 03:27
Abstract Aims As a vital polysaccharide related to mechanisms of plant resistance to trace metal in the root cell wall, the role of hemicellulose in cadmium (Cd) accumulation in hyperaccumulators is still unknown. We investigated hemicellulose modification in response to Cd in two populations of Sedum alfredii. Methods Nonhyperaccumulating population (NHP) and hyperaccumulating population (HP...
Wed, 11/27/2019 - 03:15
Abstract Background Arsenic (As) and cadmium (Cd) are two toxic elements that have a relatively high risk of transfer from paddy soil to rice grain. Rice is a major dietary source of these two elements for populations consuming rice as a staple food. Reducing their accumulation in rice grain is important for food safety and human health. Scope We review recent progress in understanding the...
Sat, 11/23/2019 - 03:15
Abstract Background and Aims Environmental fluctuations due to anthropogenic activities show negative effects on plant growth and crop production. Among the heavy metals, cadmium (Cd) pollution is most dangerous and is devastating most of the cultivable land. The current study evaluated the Cd induced toxicity in Lycopersicon esculentum plants and the mitigating role of rhizobacteria. Methods...
Fri, 10/18/2019 - 03:18
Abstract Aims Excessive boron (B) can pose toxicity to many plant species, and consequently restricts land utilization in B-laden regions. The purpose of this study was to identify “agretti” (Salsola soda) as an alternative B-tolerant food crop. Methods Both pot and hydroponic experiments were conducted for measuring biomass, total phenolic content and B absorption of S. soda exposed to varied...
Thu, 10/17/2019 - 03:18
Abstract Background and aims Soil salinity stress affects the health and growth of crops. The use of plant growth-promoting rhizobacteria (PGPR) to improve the salt tolerance of plants is gaining acceptance worldwide. Here, a halotolerant, plant growth-promoting actinobacterium Glutamicibacter halophytocola KLBMP 5180, recently isolated from the root of a coastal halophyte Limonium sinense, was...