Plant and Soil

The Research Publications track research that is published across national and international peer-reviewed journals. The most recent articles are available ahead of print and searchable by Journal Title, Subject, USDA Grant Funding Agencies or FDA Grant Funding Agencies. The research publications are tracked across five subject areas: Bacterial Pathogens, Chemical Contaminants, Natural Toxins, Parasites, and Viruses.

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...