期刊
ANNALS OF BOTANY
卷 122, 期 2, 页码 221-226出版社
OXFORD UNIV PRESS
DOI: 10.1093/aob/mcy062
关键词
Angiosperm; calcium (Ca); Caryophyllales; cation exchange capacity (CEC); cell wall; commelinid monocot; magnesium (Mg); Poales; shoot; stoichiometry; vacuole
资金
- Rural and Environment Science and Analytical Services Division (RESAS) of the Scottish Government
- King Saud University
- University of Nottingham/James Hutton Institute Postgraduate Studentship
Background Linear relationships are commonly observed between shoot magnesium ([Mg](shoot)) and shoot calcium ([Ca](shoot)) concentrations among angiosperm species growing in the same environment. Scope and Conclusions This article argues that, in plants that do not exhibit 'luxury' accumulation of Mg or Ca, (1) distinct stoichiometric relationships between [Mg](shoot) and [Ca](shoot) are exhibited by at least three groups of angiosperm species, namely commelinid monocots, eudicots excluding Caryophyllales, and Caryophyllales species; (2) these relationships are determined by cell wall chemistry and the Mg/Ca mass quotients in their cell walls; (3) differences between species in [Mg](shoot) and [Ca](shoot) within each group are associated with differences in the cation exchange capacity (CEC) of the cell walls of different species; and (4) Caryophyllales constitutively accumulate more Mg in their vacuoles than other angiosperm species when grown without a supra-sufficient Mg supply.
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