How are Systematics and Biological and Ecological Features Related to Silica Content in Plants?: A Study in Species from the Southern of South America

HONAINE, MARIANA FERNÁNDEZ; BENVENUTO, M. LAURA; MONTTI, LÍA; NATAL, MARCELA; BORRELLI, NATALIA L.; ALVAREZ, M. FERNANDA; ALTAMIRANO, STELLA MARIS; RITO, MARA DE; OSTERRIETH, MARGARITA L.

INTERNATIONAL JOURNAL OF PLANT SCIENCES

UNIV CHICAGO PRESS

Año: 2021

1058-5893

Premise of theResearch:Plant silica content depends on the phylogenetic position of a taxon; however, biological or ecological factorsmay also affect it. In this work, we analyzed data about silicophytolith content from 105 species ofSouth America, examining, in a phylogenetic context, its relationship with the anatomy andecological features such as life cycle, growth form, plant origin and environmental preferences.Methodology: Data about silicophytolith content andbio-ecological features of the species wereobtained from published andunpublished sources. The relation between systematics, silica content and bio-ecological variables were analyzedthrough measurements of phylogenetic signal and phylogeneticgeneralized least-squares regressions (PGLS).Pivotal Results: 86% of the species produced between 0.38%and 19% dry weight of silicophytolithsin leaves. Silica content was variable between and within clades. λ and K values indicate a low phylogenetic signal for thevariable silica content. Dicotyledons accumulated silica in typical epidermal cells, and a few familiesstored it also in cystoliths. Most of the monocot families showed high silicophytolith contents andhigh diversity of silicified cells.Plant origin affected silica contents: exotic species accumulated morethan native ones. On the other hand, no statistical relationship was found between silica contentand the other ecological variables. Conclusions: Silicophytolithaccumulation is a common feature in most of the species studied. The low phylogenetic signal of silica contentis explained by the inter and intra clade variability, which in turn support the hypothesis thatsilicophytolith accumulation is a homoplasic character among plants.Based on the overall analysisof the silicophytolith content and their tissue distribution, high content could be related to specificaccumulation mechanisms and roles of silica.The origin of the plants wasthe only bio-ecological variable that influenced in plant silica content. Thisfinding may indicate someecological role of silica in exotic plants, involving the success of them in novel environments.GMTDetectar idiomaAfrikáansAlbanésAlemánAmháricoÁrabeArmenioAzeríBengalíBielorrusoBirmanoBosnioBúlgaroCamboyanoCanarésCatalánCebuanoChecoChichewaChino simpChino tradCincalésCoreanoCorsoCriollo haitianoCroataDanésEslovacoEslovenoEspañolEsperantoEstonioEuskeraFinlandésFrancésFrisioGaélico escocésGalésGallegoGeorgianoGriegoGujaratiHausaHawaianoHebreoHindiHmongHolandésHúngaroIgboIndonesioInglésIrlandésIslandésItalianoJaponésJavanésKazajoKirguísKurdoLaoLatínLetónLituanoLuxemburguésMacedonioMalayalamMalayoMalgacheMaltésMaoríMaratíMongolNepalíNoruegoPanyabíPastúnPersaPolacoPortuguésRumanoRusoSamoanoSerbioSesotoShonaSindhiSomalíSuajiliSuecoSundanésTagaloTailandésTamilTayikoTeluguTurcoUcranianoUrduUzbecoVietnamitaXhosaYidisYorubaZulúAfrikáansAlbanésAlemánAmháricoÁrabeArmenioAzeríBengalíBielorrusoBirmanoBosnioBúlgaroCamboyanoCanarésCatalánCebuanoChecoChichewaChino simpChino tradCincalésCoreanoCorsoCriollo haitianoCroataDanésEslovacoEslovenoEspañolEsperantoEstonioEuskeraFinlandésFrancésFrisioGaélico escocésGalésGallegoGeorgianoGriegoGujaratiHausaHawaianoHebreoHindiHmongHolandésHúngaroIgboIndonesioInglésIrlandésIslandésItalianoJaponésJavanésKazajoKirguísKurdoLaoLatínLetónLituanoLuxemburguésMacedonioMalayalamMalayoMalgacheMaltésMaoríMaratíMongolNepalíNoruegoPanyabíPastúnPersaPolacoPortuguésRumanoRusoSamoanoSerbioSesotoShonaSindhiSomalíSuajiliSuecoSundanésTagaloTailandésTamilTayikoTeluguTurcoUcranianoUrduUzbecoVietnamitaXhosaYidisYorubaZulúLa función de sonido está limitada a 200 caracteresOpciones : Historia : Feedback : DonateCerrar