Int J Phytoremediation. 2014;16(5):524-35. doi: 10.1080/15226514.2013.798619.
Interaction between arbuscular mycorrhizal fungus Glomus deserticola and pteridophytic member Ampelopteris prolifera was found abundant on entire growth level based on elemental composition and gaseous exchange as a potential remediation system for phytoextraction of chromium. Inoculated A. prolifera (AM) and non-inoculated A. prolifera (Non-AM) were supplied with two Cr species: 12 mmol of trivalent cation (Cr(+3)) [Cr(III)] and 0.1 mmol of divalent dichromate anion (Cr2O7(-2)) [Cr(VI)]. Both Cr species were found to be depressed in overall growth and inefficient stomatal conductance (g(s)) and net photosynthesis (NP). Mycorrhizal association was found to be natural scavenger of Cr toxicity as indicated by greater growth in plants exposed to Cr species, and increased gas exchange of Cr(III) treated plants. Though, chromium reduction resulted lower level of nitrogen (N), phosphorus (P), and potassium (K) but interestingly elevated the level of aluminum (Al), iron (Fe), and zinc (Zn) uptake in many folds which is the significance of sustainable growth of plant.
基于元素组成和气体交换,发现丛枝菌根真菌 Glomus deserticola 与蕨类植物凤尾蕨之间的相互作用在整个生长水平上都很丰富,是植物提取铬的潜在修复系统。用两种铬物种(12 mmol 三价阳离子(Cr(+3))[Cr(III)]和 0.1 mmol 二价重铬酸根阴离子(Cr2O7(-2))[Cr(VI))]供应接种凤尾蕨(AM)和未接种凤尾蕨(Non-AM)。这两种铬物种都被发现对整体生长和低效的气孔导度(g(s))和净光合作用(NP)产生抑制作用。菌根共生被发现是铬毒性的天然清除剂,因为暴露于铬物种的植物生长更大,并且 Cr(III)处理的植物的气体交换增加。尽管铬还原导致氮(N)、磷(P)和钾(K)水平降低,但有趣的是,它以多倍体的形式显著提高了铝(Al)、铁(Fe)和锌(Zn)的吸收水平,这是植物可持续生长的意义所在。