000063320 001__ 63320
000063320 005__ 20171129112117.0
000063320 0247_ $$2doi$$a10.1371/journal.pone.0107285
000063320 0248_ $$2sideral$$a98816
000063320 037__ $$aART-2014-98816
000063320 041__ $$aeng
000063320 100__ $$aPalacio, S.
000063320 245__ $$aGypsophile chemistry unveiled: Fourier transform infrared (FTIR) spectroscopy provides new insight into plant adaptations to gypsum soils
000063320 260__ $$c2014
000063320 5060_ $$aAccess copy available to the general public$$fUnrestricted
000063320 5203_ $$aGypsum soils are among the most restrictive and widespread substrates for plant life. Plants living on gypsum are classified as gypsophiles (exclusive to gypsum) and gypsovags (non-exclusive to gypsum). The former have been separated into wide and narrow gypsophiles, each with a putative different ecological strategy. Mechanisms displayed by gypsum plants to compete and survive on gypsum are still not fully understood. The aim of this study was to compare the main chemical groups in the leaves of plants with different specificity to gypsum soils and to explore the ability of Fourier transform infrared (FTIR) spectra analyzed with neural network (NN) modelling to discriminate groups of gypsum plants. Leaf samples of 14 species with different specificity to gypsum soils were analysed with FTIR spectroscopy coupled to neural network (NN) modelling. Spectral data were further related to the N, C, S, P, K, Na, Ca, Mg and ash concentrations of samples. The FTIR spectra of the three groups analyzed showed distinct features that enabled their discrimination through NN models. Wide gypsophiles stood out for the strong presence of inorganic compounds in their leaves, particularly gypsum and, in some species, also calcium oxalate crystals. The spectra of gypsovags had less inorganic chemical species, while those of narrow gypsum endemisms had low inorganics but shared with wide gypsophiles the presence of oxalate. Gypsum and calcium oxalate crystals seem to be widespread amongst gypsum specialist plants, possibly as a way to tolerate excess Ca and sulphate. However, other mechanisms such as the accumulation of sulphates in organic molecules are also compatible with plant specialization to gypsum. While gypsovags seem to be stress tolerant plants that tightly regulate the uptake of S and Ca, the ability of narrow gypsum endemisms to accumulate excess Ca as oxalate may indicate their incipient specialization to gypsum.
000063320 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/CGL2011-26654
000063320 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000063320 590__ $$a3.234$$b2014
000063320 591__ $$aMULTIDISCIPLINARY SCIENCES$$b9 / 57 = 0.158$$c2014$$dQ1$$eT1
000063320 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000063320 700__ $$aAitkenhead, M.
000063320 700__ $$aEscudero, A.
000063320 700__ $$aMontserrat-Martí, G.
000063320 700__ $$aMaestro, M.
000063320 700__ $$aRobertson, A. H. J.
000063320 773__ $$g9, 9 (2014), e107285 [13 pp]$$pPLoS One$$tPLoS One$$x1932-6203
000063320 8564_ $$s368871$$uhttps://zaguan.unizar.es/record/63320/files/texto_completo.pdf$$yVersión publicada
000063320 8564_ $$s126666$$uhttps://zaguan.unizar.es/record/63320/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000063320 909CO $$ooai:zaguan.unizar.es:63320$$particulos$$pdriver
000063320 951__ $$a2017-11-28-13:51:19
000063320 980__ $$aARTICLE