Manganese Accumulation and Tissue-level Distribution in the Australian Hyperaccumulator Gossia Bidwillii (Myrtaceae)

Abstract The manganese (Mn) hyperaccumulator Gossia bidwillii is a tree species native to subtropical eastern Australia where it occurs on Mn-rich soils. Here, we conducted the first Mn accumulation and tissue-level distribution study wild experimentally grown G. . plants were subjected different levels of (250 µg g −1 , 500 1000 ) soil dosing treatments, whereas was sampled from growing highly Mn-enriched natural We used laboratory-based micro-X-ray Fluorescence (µXRF) elemental mapping elucidate in situ patterns other elements hydrated Mn-dosed leaves. data revealed that can be strongly Mn-hyperaccumulating with foliar concentrations 39 000 24 old young leaves, respectively. In trial, accumulated 400 leaves 17 100 highest treatment level. laboratory based µXRF uniformly enriched throughout laminae petioles both G ; while primarily concentrated at leaf-tip lamina. approach employed by combining field controlled experiments especially meaningful for investigating this gaining added insight into phenomenon hyperaccumulation.