Root biomass production in populations of six rooted macrophytes in response to Cu exposure: Intra-specific variability versus constitutive-like tolerance

Abstract

Intra-specific variability of root biomass production (RP) of six rooted macrophytes, i.e. Juncus effusus, Phragmites australis, Schoenoplectus lacustris, Typha latifolia, Phalaris arundinacea, and Iris pseudacorus grown from clones, in response to Cu exposure was investigated. Root biomass production varied widely for all these macrophytes in control conditions (0.08 μM) according to the sampling site. Root biomass production of T. latifolia and I. pseudacorus in the 2.5-25 μM Cu range depended on the sampling location but not on the Cu dose in the growth medium. For P. australis, J. effusus, S. lacustris, and P. arundinacea, an intra-specific variability of RP depending on both the sampling location and the Cu-dose was evidenced. This intra-specific variability of RP depending on the sampling location and of Cu-tolerance for these last four species suggests that Cu constitutive tolerance for all rooted macrophytes is not a species-wide trait but it exhibits variability for some species.

Assessment of treatment efficiency of constructed wetlands in East Ukraine

“…The elimination of contaminants in influents also depends on the inter-and intra-specific variability of the consortium macrophytes/microorganisms (Brisson and Chazarence, 2009;Marchand et al, 2010Marchand et al, , 2014aMarchand et al, ,b, 2014a, climate conditions (Kushck et al, 2003;Maine et al, 2007) and anthropogenic factors (construction type, wastewater quality, operating conditions, etc.) (Saeed and Sun, 2012;Zhi and Ji, 2012).…”

OsMSR3, a Small Heat Shock Protein, Confers Enhanced Tolerance to Copper Stress in Arabidopsis thaliana

“…In addition, exposure of plants to excess Cu interferes with normal growth, proliferation, and differentiation of most plant cells [8,9,10,11,12,13,14]. One of the earliest and most obvious symptoms of Cu stress is inhibition of primary root elongation [15,16,17], while its prominent manifestations are decreased proliferation of root meristem cells [18], impaired cell integrity [19], and cell death [20]. Excessive accumulation of Cu in plants leads to the production of reactive oxygen species (ROS), which are toxic owing to their high redox activity [21].…”

Arbuscular mycorrhizal inoculation has similar benefits to fertilization for Thuja occidentalis L. seedling nutrition and growth on peat soil over a range of pH: implications for restoration

“…Historically, both fertilization and liming have been commonly used to improve seedling growth in marginal soils during restoration (Moore et al 2000;Walker 2002;Jonard et al 2010;Pabian et al 2012). However, these practices can be costly and lead to eutrophication and accumulation of heavy metals in soils, aquatic ecosystems, and plants (Simola 1983;Braekke 1999;Savci 2012;van der Ent et al 2013;Marchand et al 2014). Another option is using arbuscular mycorrhizal (AM) fungi that colonize cedar (Brundrett et al 1989;Matthes-Sears et al 1992;Bainard et al 2011) and may assist its colonization in nutrient-poor peat soils by enhancing nutrient, especially P, uptake.…”