Arbuscular mycorrhizae increase the arsenic translocation factor in the As hyperaccumulating fern Pteris vittata L.

Trotta, Antonio; Falaschi, P.; Cornara, Laura; Minganti, Vincenzo; Fusconi, Anna; Drava, Giuliana; Berta, Graziella

doi:10.1016/j.chemosphere.2006.02.048

Cited by 166 publications

(91 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the As-hyperaccumulator fern Pteris vittata, hosting the AM symbiosis with Glomus mosseae (now renamed Funneliformis mosseae, see the M&M subsection 2.1. ), an increase in both the As translocation factor from roots to fronds and in overall As tolerance, has been shown (Bona et al, 2011;Trotta et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

The symbiosis between Nicotiana tabacum and the endomycorrhizal fungus Funneliformis mosseae increases the plant glutathione level and decreases leaf cadmium and root arsenic contents

Degola

Fattorini

Bona

et al. 2015

Plant Physiology and Biochemistry

View full text Add to dashboard Cite

a b s t r a c tOver time, anthropogenic activities have led to severe cadmium (Cd) and arsenic (As) pollution in several environments. Plants inhabiting metal(loid)-contaminated areas should be able to sequester and detoxify these toxic elements as soon as they enter roots and leaves. We postulated here that an important role in protecting plants from excessive metal(loid) accumulation and toxicity might be played by arbuscular mycorrhizal (AM) fungi. In fact, human exploitation of plant material derived from Cd-and As-polluted environments may lead to a noxious intake of these toxic elements; in particular, a possible source of Cd and As for humans is given by cigarette and cigar smoke. We investigated the role of AM fungus Funneliformis mosseae (T.H. Nicolson & Gerd.) C. Walker & A. Schüßler in protecting Nicotiana tabacum L. (cv. Petit Havana) from the above-mentioned metal(loid) stress. Our findings proved that the AM symbiosis is effective in increasing the plant tissue content of the antioxidant glutathione (GSH), in influencing the amount of metal(loid)-induced chelators as phytochelatins, and in reducing the Cd and As content in leaves and roots of adult tobacco plants. These results might also prove useful in improving the quality of commercial tobacco, thus reducing the risks to human health due to inhalation of toxic elements contained in smoking products.

show abstract

Section: Introductionmentioning

confidence: 99%

The symbiosis between Nicotiana tabacum and the endomycorrhizal fungus Funneliformis mosseae increases the plant glutathione level and decreases leaf cadmium and root arsenic contents

Degola

Fattorini

Bona

et al. 2015

Plant Physiology and Biochemistry

View full text Add to dashboard Cite

show abstract

“…The AM fungi associated with metal-tolerant plants may contribute to the accumulation of heavy metals in roots in a non-toxic form inside hyphal cell walls or complexed into phosphate materials inside the cells (Galli et al, 1995). However, the effect of AM fungi on the uptake of metals by plants is not yet totally clear, with reports finding increased uptake of metals (Tonin et al, 2001;Liao et al, 2003;Whitefield et al, 2004;Citterio et al, 2005), decreased uptake (Weissenhorn et al, 1995, Chen et al, 2003 or no uptake effects (Trotta et al, 2006;Wu et al, 2007). Factors such as the metal element and its availability, plant species, fungal species or strain and differences in mycorrhizal and non-mycorrhizal plant size and P content in experiments may account for different results .…”

Section: Mycorrhizoremediationmentioning

confidence: 96%

Arbuscular mycorrhizal networks: process and functions. A review

Garg

Chandel

2010

Agron. Sustain. Dev.

154

View full text Add to dashboard Cite

-An unprecedented, rapid change in environmental conditions is being observed, which invariably overrules the adaptive capacity of land plants. These environmental changes mainly originate from anthropogenic activities, which have aggravated air and soil pollution, acid precipitation, soil degradation, salinity, contamination of natural and agro-ecosystems with heavy metals such as cadmium (Cd), lead (Pb), mercury (Hg), arsenic (As), global climate change, etc. The restoration of degraded natural habitats using sustainable, low-input cropping systems with the aim of maximizing yields of crop plants is the need of the hour. Thus, incorporation of the natural roles of beneficial microorganisms in maintaining soil fertility and plant productivity is gaining importance and may be an important approach. Symbiotic association of the majority of crop plants with arbuscular mycorrhizal (AM) fungi plays a central role in many microbiological and ecological processes. In mycorrhizal associations, the fungal partner assists its plant host in phosphorus (P) and nitrogen (N) uptake and also some of the relatively immobile trace elements such as zinc (Zn), copper (Cu) and iron (Fe). AM fungi also benefit plants by increasing water uptake, plant resistance and biocontrol of phytopathogens, adaptation to a variety of environmental stresses such as drought, heat, salinity, heavy metal contamination, production of growth hormones and certain enzymes, and even in the uptake of radioactive elements. The establishment of symbiotic association usually involves mutual recognition and a high degree of coordination at the morphological and physiological level, which requires a continuous cellular and molecular dialogue between both the partners. This has led to the identification of the genes, signal transduction pathways and the chemical structures of components relevant to symbiosis; however, scientific knowledge on the physiology and function of these fungi is still limited. This review unfolds our current knowledge on signals and mechanisms in the development of AM symbiosis; the molecular basis of nutrient exchange between AM fungi and host plants; and the role of AM fungi in water uptake, disease protection, alleviation of various abiotic soil stresses and increasing grain production.

show abstract

“…Under the condition of 100 mg As per kg soil, non-colonized plants accumulated 60.4 mg As kg −1 while plants colonized by arbuscular mycorrhizal fungi (AMF) isolated from an As mine accumulated 88.1 g As kg −1 and also enhanced plant growth. On the other hand, Trotta et al [44] found that in the same plant species, P. vittata, rhizofungi increased plant growth only in the above ground parts but reduced root As concentration without any effect on frond concentration, therefore resulting in a larger As translocation factor. Moreover, in U and As-contaminated soil, Chen et al [62] found that rhizofungi depressed growth of P. vittata particularly at the early stages and had no effect on As concentration in this plant.…”

Section: Rhizoremediation Of Metalsmentioning

confidence: 99%

Rhizoremediation of metals: harnessing microbial communities

Banu

Ramasamy

2008

Indian J Microbiol

View full text Add to dashboard Cite

With the increasing successful stories of decontamination, different strategies for metal remediation are gaining importance and popularization in developing countries. Rhizoremediation, is one such promising option that harnesses the impressive capabilities of microorganisms associated with roots to degrade organic pollutants and transform toxic metals. Since it is a plant based in-situ phytorestoration technique it is proven to be economical, effi cient and easy to implement under fi eld conditions. Plants grown in metal contaminated sites harbor unique metal tolerant and resistant microbial communities in their rhizosphere. These rhizo-microfl ora secrete plant growth promoting substances, siderophores, phytochelators to alleviate metal toxicity, enhance the bioavailability of metals (phytoremediation) and complexation of metals (phytostabilisation). Selection of right bacteria/consortia and inoculation to seed/ roots of suitable plant species will widen the perspectives of rhizoremediation.

show abstract

Arbuscular mycorrhizae increase the arsenic translocation factor in the As hyperaccumulating fern Pteris vittata L.

Cited by 166 publications

References 36 publications

The symbiosis between Nicotiana tabacum and the endomycorrhizal fungus Funneliformis mosseae increases the plant glutathione level and decreases leaf cadmium and root arsenic contents

The symbiosis between Nicotiana tabacum and the endomycorrhizal fungus Funneliformis mosseae increases the plant glutathione level and decreases leaf cadmium and root arsenic contents

Arbuscular mycorrhizal networks: process and functions. A review

Rhizoremediation of metals: harnessing microbial communities

Contact Info

Product

Resources

About