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Title

Plant’s gypsum affinity shapes responses to specific edaphic constraints without limiting responses to other general constraints

AuthorsSánchez‑Martín, Ricardo; Querejeta, José I.; Voltas, Jordi; Ferrio, Juan Pedro; Prieto, Iván; Verdú, Miguel CSIC ORCID; Montesinos-Navarro, Alicia
KeywordsGypsum affinity
Niche segregation
Nutrients
Stable isotopes
Trade‐off
Water source
Issue Date10-Feb-2021
PublisherSpringer
CitationPlant and Soil 462: 297-309 (2021)
Abstract[Aims]: Harsh edaphic environments harbor species with different soil affinities. Plant’s responses to specific edaphic constraints may be compromised against responses to prevalent stresses shared with other semi-arid environments. We expect that species with high edaphic affinity may show traits to overcome harsh soil properties, while species with low affinity may respond to environmental constraints shared with arid environments. [Methods]: We quantified the edaphic affinity of 12 plant species co-occurring in gypsum outcrops and measured traits related to plant responses to specific gypsum constraints (rooting and water uptake depth, foliar accumulation of Ca, S and Mg), and traits related to common constraints of arid environments (water use efficiency, macronutrients foliar content). [Results]: Plants in gypsum outcrops differed in their strategies to face edaphic limitations. A phylogenetic informed PCA segregated species based on their foliar Ca and S accumulation and greater water uptake depths, associated with plant responses to specific gypsum limitations. Species’ gypsum affinity explained this segregation, but traits related to water or nutrient use efficiency did not contribute substantially to this axis. [Conclusions]: Plant’s specializations to respond to specific edaphic constraints of gypsum soils do not limit their ability to deal with other non-specific environmental constraints.
Publisher version (URL)http://dx.doi.org/10.1007/s11104-021-04866-4
URIhttp://hdl.handle.net/10261/266571
DOI10.1007/s11104-021-04866-4
ISSN0032-079X
E-ISSN1573-5036
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