The effects of arsenic on the growth and nutritional status of Anadenanthera peregrina, a Brazilian savanna tree

Abstract

Anadenanthera peregrina is a Brazilian savanna tree species that occurs naturally in arsenic (As)‐contaminated areas, and its As resistance has been associated with arbuscular mycorrhizal–fungi (AMF) symbiosis. A plant's ability to survive in stressful environments is correlated with its nutrition status, which can be affected by As uptake. The present study evaluated the influence of As on the concentrations and distribution of nutrients in the roots and shoots of A. peregrina grown in the absence of AMF. These plants were grown in substrates spiked with 0, 10, 50, and 100 mg As kg–1 for 25 d under greenhouse conditions, and the concentrations of essential macro‐ (P, K, Ca, Mg, N, and S) and micro‐ (Fe, Mn, Cu, Zn, B, and Mo) nutrients in the roots and shoots were then determined. Enhanced As levels increased the concentrations of P, S, and N and decreased Ca, Mg, and Fe. Although the deleterious effects of As on the plants were striking, the internal As levels were high, which indicated some tissue tolerance of A. peregrina.

Samsun İli’ndeki Bazı Doğal ve Egzotik Ağaç ve Çalı Türlerinde Arsenik Birikimi

“…Dias et al (2010) also found that As may be translocated to twigs in some plant species. In summary, As is a very important metalloid not only very toxic for plants but also influences the metabolism of the other elements such as N, P, K, Ca and Mg (Tu and Ma, 2005;Gomes et al, 2012). We suggested that As accumulator tree species may been used safely for urban-planning especially in highlycontaminated areas with As.…”

“…In plant roots As compounds are sequestered in vacuoles and chelated with thiols and as a result of this the transportation of As compounds are limited (Zhao et al, 2010;Gomes et al, 2012). Zhao et al, (2010) also stated that As has low mobility and translocation from roots to aboveground parts of plants were limited except for hyper accumulator species.…”

“…There were several studies about As concentrations around mine and smelter wastes, in urban environments (Tomaševic et al, 2005;Nkongolo et al, 2008;Xie et al, 2009). However, aquatic species (Koch et al, 2000), lichen species (Bajpai et al, 2010), savanna trees (Gomes et al, 2012), pine species (Favas et al, 2013), and herb species (Karimi and Souri, 2015) were used. However, no study was carried out to evaluate the using of shrub and tree species for biomonitoring of As pollution mainly traffic origin in urban environments.…”

“…These fractions could be bound to lipids or to cell wall components, including in soluble cellulose, calcium or magnesium pectates, or lignin. It has been known that As usually inhibits plant growth because it is affected the uptake of other nutrients and as a result of this metabolic processes such as nutrient transport are altered (Gomes et al, 2012). It is also very harmful for central cellular functions such as aerobic phosphorylation and the function of proteins (Hughes, 2002;Nagajyoti et al, 2010;Bergqvist, 2011).…”

Arsenic forms in phytoextraction of this metalloid in organs of 2-year-old Acer platanoides seedlings

“…Most plants are able to uptake As mainly in roots (Gomes et al 2012 ; Parraga-Aguado et al 2014 ), and only selected plant species such as Pteris vittata are characterized by effective uptake and translocation of As (Su et al 2008 ; Wang et al 2002 ). The general model of As uptake in the tree species studied in this and in the previous paper (Budzyńska et al 2017b ) is the same as for the majority of plants described in literature data (Li et al 2016 ).…”