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Effect of soil moisture on the percolation of lichen substances from Cladonia verticillaris (Raddi) Fr. in a quarzarenic neosol from Brazil

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De Armas, Roberto and De Oliveira, Andrezza K. and De Vasconcelos, Talitha L. and Vicente Córdoba, Carlos and Santiago, Rocío and Pereira, Eugênia C. and Legaz González, María Estrella (2016) Effect of soil moisture on the percolation of lichen substances from Cladonia verticillaris (Raddi) Fr. in a quarzarenic neosol from Brazil. Environmental science : an indian journal, 12 (6). pp. 243-251. ISSN 0974-7451

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Official URL: http://www.tsijournals.com/abstract/effect-of-soil-moisture-on-the-percolation-of-lichen-substances-from-cladonia-verticillaris-raddi-fr-in-a-quarzarenic-ne-3087.html



Abstract

Cladonia verticillaris (Raddi) Fr. is a lichen species that grows on sandy soil of tablelands coexisting with savannah-like vegetation in Brazil. This species produces different lichen phenolics that are leached to the soil by the rainwater and exhibit several biological activities that could affect the habitat. The effect of soil moisture in the retention and percolation of proteins, protocetraric acid (PRO) and fumarprotocetraric acid (FUM), the main phenolics produced from C. verticillaris, was analyzed in this work. Proteins were retained in dry soil but they percolated when the soil was water-saturated. FUM was strongly retained in this kind of acidic soils and transformed into PRO by spontaneous hydrolysis when the soil moisture increased. This study demonstrates that proteins, PRO and FUM that were effectively leached to the soil, retained, transformed or percolated to deeper soil layers depending on the amount of previous rainfall. This fact must be taken into account in order to consider the biological effects of these substances on the vegetation of coastal tableland Brazil.


Item Type:Article
Uncontrolled Keywords:Coastal tableland; Fumarprotocetraric acid; HPLC; Lichen phenolics; Protocetraric acid
Subjects:Medical sciences > Biology > Botany
Medical sciences > Biology > Plant physiology
ID Code:46839
Deposited On:12 Mar 2018 16:04
Last Modified:09 Apr 2019 09:25

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