Phylogenetic patterns of foliar mineral nutrient accumulation among gypsophiles and their relatives in the Chihuahuan Desert

Muller, Clare; Moore, Michael J.; Feder, Zoë A.; Tiley, Helene; Drenovsky, Rebecca E.

doi:10.3732/ajb.1700245

Cited by 20 publications

(28 citation statements)

References 45 publications

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“…In accordance with our second hypothesis, gypsophiles had higher leaf S and Mg and lower K concentrations than gypsovags in both soil types. This pattern indicates a high preference of gypsophiles for these two elements, in accordance with previous studies of plants growing on gypseous soils, where the S and Mg concentrations of gypsophiles tended to be higher than those of gypsovags (Alvarado, 1995, Palacio et al, 2007, Muller et al, 2017.…”

Section: Gypsophiles Displayed Higher Leaf S and Mg And Lower Leaf K Than Gypsovags Both In And Off Gypsumsupporting

confidence: 91%

“…Wide gypsophiles tend to have higher foliar S and Ca, lower K and, sometimes, higher foliar Mg as compared to co-existing gypsovags (Duvigneaud and Denaeyer-De Smet, 1968;Boukhris and Loissant 1970, 1972, 1975Alvarado, 1995;Palacio et al, 2007;Muller et al, 2017). This unique leaf chemical composition was observed despite phylogenetic constraints in gypsophilic species from the Chihuahuan Desert (Muller et al, 2017). However, the ecological or adaptive implications of the atypical chemical composition of wide gypsophiles remain unexplored.…”

Section: Introductionmentioning

confidence: 96%

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Gypsum-exclusive plants accumulate more leaf S than non-exclusive species both in and off gypsum

Cera

Montserrat-Martı́

Ferrio

et al. 2021

Environmental and Experimental Botany

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Gypsum-exclusive species (gypsophiles), are restricted to gypseous soils in natural environments. However, it is unclear why gypsophiles display greater affinity to gyspeous soils than other soils. These plants are edaphic endemics, growing in alkaline soils with high Ca and S. Gypsophiles tend to show higher foliar Ca and S, lower K and, sometimes, higher Mg than non-exclusive gypsum species, named gypsovags. Our aim was to test if the unique leaf elemental signature of gypsophiles could be the result of special nutritional requirements linked to their specificity to gypseous soils. These nutritional requirements could hamper the completion of their life cycle and growth in other soil types. To test this hypothesis, we cultivated five gypsophiles and five gypsovags dominant in Spanish gypsum outcrops on gypseous and calcareous (non-gypseous) field soil for 29 months. We regularly measured growth and phenology, and differences in leaf traits, final biomass, individual seed mass, seed viability, photosynthetic assimilation and leaf elemental composition. We found all the gypsophiles studied were able to complete their life cycle in non-gypseous soil, producing viable seeds, attaining greater biomass and displaying higher photosynthetic assimilation rates than in gypseous soil. The leaf elemental composition of some species (both gypsophiles and gypsovags) shifted depending on soil, although none of them showed leaf deficiency symptoms. Regardless of soil type, gypsophiles had higher leaf S, Mg, Fe, Al, Na, Mn, Cr and lower K than gypsovags. Consequently, gypsophiles have a unique leaf chemical signature compared to gypsovags of the same family, particularly due to their high leaf S regardless of soil conditions. However, these nutrient requirements are not sufficient to explain why gypsophiles are restricted to gypsum soil in natural conditions.

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Section: Gypsophiles Displayed Higher Leaf S and Mg And Lower Leaf K Than Gypsovags Both In And Off Gypsumsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 96%

Gypsum-exclusive plants accumulate more leaf S than non-exclusive species both in and off gypsum

Cera

Montserrat-Martı́

Ferrio

et al. 2021

Environmental and Experimental Botany

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“…The abnormal accumulation of other elements, which is often associated with biomineralisation, has also been reported (He et al ). For example, regionally dominant gypsophile species can have leaf S concentrations of 10–80 mg g −1 DM when growing on gypsum substrates where most non‐endemic (gypsovag) species contain leaf S concentrations <1–5 mg g −1 DM (Ernst , Escudero et al , Reid et al , Muller et al ). Although this trait is likely to be most advantageous on gypsum‐rich soils, the ability of plants to accumulate S by precipitating calcium or magnesium sulfate is not restricted to gypsophile species and some of their gypsovag relatives also exhibit the trait (Reid et al , Muller et al ).…”

Section: Phylogenetic Effects On the Leaf Ionomementioning

confidence: 99%

“…For example, regionally dominant gypsophile species can have leaf S concentrations of 10–80 mg g −1 DM when growing on gypsum substrates where most non‐endemic (gypsovag) species contain leaf S concentrations <1–5 mg g −1 DM (Ernst , Escudero et al , Reid et al , Muller et al ). Although this trait is likely to be most advantageous on gypsum‐rich soils, the ability of plants to accumulate S by precipitating calcium or magnesium sulfate is not restricted to gypsophile species and some of their gypsovag relatives also exhibit the trait (Reid et al , Muller et al ). In addition to Brassicales species, the phylogenetic inheritance of a constitutively large leaf S concentration is evident within the Acacia [Fabaceae], Anulocaulis [Nyctaginaceae, Caryphyllales] and Tiquilia [Boraginaceae] genera (Reid et al , Muller et al ).…”

Section: Phylogenetic Effects On the Leaf Ionomementioning

confidence: 99%

“…Although this trait is likely to be most advantageous on gypsum‐rich soils, the ability of plants to accumulate S by precipitating calcium or magnesium sulfate is not restricted to gypsophile species and some of their gypsovag relatives also exhibit the trait (Reid et al , Muller et al ). In addition to Brassicales species, the phylogenetic inheritance of a constitutively large leaf S concentration is evident within the Acacia [Fabaceae], Anulocaulis [Nyctaginaceae, Caryphyllales] and Tiquilia [Boraginaceae] genera (Reid et al , Muller et al ).…”

Section: Phylogenetic Effects On the Leaf Ionomementioning

confidence: 99%

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Variation in the angiosperm ionome

Neugebauer

Broadley

El‐Serehy

et al. 2018

Physiologia Plantarum

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The ionome is defined as the elemental composition of a subcellular structure, cell, tissue, organ or organism. The subset of the ionome comprising mineral nutrients is termed the functional ionome. A ‘standard functional ionome’ of leaves of an ‘average’ angiosperm, defined as the nutrient composition of leaves when growth is not limited by mineral nutrients, is presented and can be used to compare the effects of environment and genetics on plant nutrition. The leaf ionome of a plant is influenced by interactions between its environment and genetics. Examples of the effects of the environment on the leaf ionome are presented and the consequences of nutrient deficiencies on the leaf ionome are described. The physiological reasons for (1) allometric relationships between leaf nitrogen and phosphorus concentrations and (2) linear relationships between leaf calcium and magnesium concentrations are explained. It is noted that strong phylogenetic effects on the mineral composition of leaves of angiosperm species are observed even when sampled from diverse environments. The evolutionary origins of traits including (1) the small calcium concentrations of Poales leaves, (2) the large magnesium concentrations of Caryophyllales leaves and (3) the large sulphur concentrations of Brassicales leaves are traced using phylogenetic relationships among angiosperm orders, families and genera. The rare evolution of hyperaccumulation of toxic elements in leaves of angiosperms is also described. Consequences of variation in the leaf ionome for ecology, mineral cycling in the environment, strategies for phytoremediation of contaminated land, sustainable agriculture and the nutrition of livestock and humans are discussed.

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Seasonal variation in AMF colonisation, soil and plant nutrient content in gypsum specialist and generalist species growing in P-poor soils

et al. 2021

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Aims Gypsum soils are P-limited atypical soils that harbour a rich endemic flora. These singular soils are usually found in drylands, where plant activity and soil nutrient availability are seasonal. No previous studies have analysed the seasonality of P nutrition and its interaction with the arbuscular mycorrhiza fungi (AMF) colonisation in gypsum plants. Our aim was to evaluate the seasonal changes in plant nutrient status, AMF colonisation and rhizospheric soil nutrient availability in gypsum specialist and generalist species. Methods We evaluated seasonal variation in the proportion of root length colonised by AMF structures (hyphae, vesicules and arbuscules), plant nutrient status (leaf C, N and P and fine root C and N) and rhizospheric soil content (P, organic matter, nitrate and ammonium) of three gypsum specialists and two generalists throughout a year. Results All species showed arbuscules within roots, including species of Caryophyllaceae and Brassicaceae. Root colonisation by arbuscules (AC) was higher in spring than in other seasons, when plants showed high leaf P-requirements. Higher AC was decoupled from inorganic N and P availability in rhizospheric soil, and foliar nutrient content. Generalists showed higher AC than specialists, but only in spring. Conclusions Seasonality was found in AMF colonisation, rhizospheric soil content and plant nutrient status. The mutualism between plants and AMF was highest in spring, when P-requirements are higher for plants, especially in generalists. However, AMF decoupled from plant demands in autumn, when nutrient availability increases in rhizospheric soil.

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Phylogenetic patterns of foliar mineral nutrient accumulation among gypsophiles and their relatives in the Chihuahuan Desert

Cited by 20 publications

References 45 publications

Gypsum-exclusive plants accumulate more leaf S than non-exclusive species both in and off gypsum

Gypsum-exclusive plants accumulate more leaf S than non-exclusive species both in and off gypsum

Variation in the angiosperm ionome

Seasonal variation in AMF colonisation, soil and plant nutrient content in gypsum specialist and generalist species growing in P-poor soils

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