The biogeochemistry of copper metallophytes in the Roseby Corridor (North-West Queensland, Australia)

IF 1.6 3区环境科学与生态学 Q4 BIOCHEMISTRY & MOLECULAR BIOLOGY

Chemoecology Pub Date : 2020-09-26 DOI:10.1007/s00049-020-00325-1

Roger H. Tang, Peter D. Erskine, Richard Lilly, Antony van der Ent

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引用次数: 1

Abstract

The ability of Australian native metallophytes to tolerate extreme metal concentrations in the soil and other difficult edaphic conditions is still not well understood. Copper is an essential micronutrient for plants to survive, but at high concentrations (>?20?μg?g^?1) in plant tissues, it can cause foliar chlorosis, stunted growth, and ultimately plant death. The Roseby Corridor in Central Queensland (near Cloncurry) is host to copper metallophytes (Polycarpaea spirostylis, Bulbostylis barbata, Tephrosia virens, Eriachne mucronata) which are able to tolerate soils with total copper concentrations up to 12,700?μg?g^?1_. Even with these high levels of copper in the rhizosphere, the maximum copper in all species is relatively low when compared to Cu concentrations in the soil (leaf/stem: Bulbostylis barbata: 40.9?μg?g^?1, Eriachne mucronata: 12.3?μg?g^?1, Polycarpaea spirostylis: 10.9?μg?g^?1, Tephrosia virens: 128?μg?g^?1). Therefore, all of these species can be classified as copper Excluder-type metallophytes. Their affinity to copper makes these metallophytes useful indicators of copper surface mineralisation within the Roseby Corridor.

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澳大利亚昆士兰西北部Roseby走廊铜金属的生物地球化学特征

澳大利亚本土金属植物耐受土壤中极端金属浓度和其他困难的土壤条件的能力仍然没有得到很好的理解。铜是植物生存所必需的微量元素，但当其在植物组织中浓度过高(20 μg / 1)时，会导致叶片褪绿、生长发育迟缓，最终导致植物死亡。昆士兰中部的玫瑰走廊(Cloncurry附近)是铜金属植物(Polycarpaea spirostylis, Bulbostylis barbata, Tephrosia virens, Eriachne mucronata)的宿主，它们能够耐受总铜浓度高达12,700 μg / 1的土壤。尽管根际中铜含量很高，但与土壤中的铜浓度相比，所有物种的最大铜含量相对较低(叶/茎:barbata: 40.9 μg)。1、紫锥虫:12.3 μg?1、螺旋藻:10.9 μg;1、毛茛:128 μg(1)。因此，这些种类均可归类为铜排斥型金属植物。它们对铜的亲和力使这些金属植物成为罗斯比走廊内铜表面矿化的有用指标。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemoecology 环境科学-生化与分子生物学

CiteScore

4.20

自引率

0.00%

发文量

审稿时长

>36 weeks

期刊介绍： It is the aim of Chemoecology to promote and stimulate basic science in the field of chemical ecology by publishing research papers that integrate evolution and/or ecology and chemistry in an attempt to increase our understanding of the biological significance of natural products. Its scopes cover the evolutionary biology, mechanisms and chemistry of biotic interactions and the evolution and synthesis of the underlying natural products. Manuscripts on the evolution and ecology of trophic relationships, intra- and interspecific communication, competition, and other kinds of chemical communication in all types of organismic interactions will be considered suitable for publication. Ecological studies of trophic interactions will be considered also if they are based on the information of the transmission of natural products (e.g. fatty acids) through the food-chain. Chemoecology further publishes papers that relate to the evolution and ecology of interactions mediated by non-volatile compounds (e.g. adhesive secretions). Mechanistic approaches may include the identification, biosynthesis and metabolism of substances that carry information and the elucidation of receptor- and transduction systems using physiological, biochemical and molecular techniques. Papers describing the structure and functional morphology of organs involved in chemical communication will also be considered.