Ecology and evolution of plant diversity in the endangered campo rupestre: a neglected conservation priority

Silveira, Fernando A. O.; Negreiros, Daniel; Barbosa, Marcos Pinotti; Buisson, Élise; Carmo, Flávio Fonseca do; Carstensen, Daniel; Conceição, Abel Augusto; Cornelissen, Tatiana; Echternacht, Lívia; Fernandes, G. Wilson; Garcia, Queila Souza; Guerra, Tadeu J.; Jacobi, Claudia Maria; Lemos-Filho, José Pires de; Stradic, Soizig Le; Morellato, Leonor Patrícia Cerdeira; Neves, Frederico S.; Oliveira, Rafael S.; Schaefer, Carlos Ernesto Gonçalves Reynaud; Viana, Pedro Lage; Lambers, Hans

doi:10.1007/s11104-015-2637-8

Cited by 528 publications

(582 citation statements)

References 145 publications

(194 reference statements)

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“…According to Silveira et al (2016), and following the guidelines established by Hopper, FRG presents the five characteristics necessary to be considered an Old ClimatellyBuffered Infertile Landscapes (OCBILs). According to the authors, the characteristics 4 and 5, which correspond respectively to nutritional and other biological specializations for resource acquisition and high vulnerability to soil removal, may also be justified by the presence of a specific and specialized microbiota.…”

Section: Pgpr and Plant Maintenance In Frg: Perspectivesmentioning

confidence: 99%

“…Considering that iron-rich environments are usually habitat to rare flora characterized by high percentages of species with restricted geographical distribution (Silveira et al, 2016), it is possible that they are deeply associated with complex and restrictive coevolutionary processes (Grime, 1977). In this context, plants provide organic molecules originated from its metabolism for bacteria and other microorganisms, which in turn minimizes the potential damage that could be induced by metal and other soil components (or their deficiency, as in the case of P) to plant tissues.…”

Section: Pgpr and Plant Maintenance In Frg: Perspectivesmentioning

confidence: 99%

“…In southeastern of Brazil these peculiar vegetation is classified as Ferruginous Rupestrian Grasslands (FRG) (Silveira et al, 2016). Metallophytes communities of plants from FRG represent one of the most relevant for conservation purposes since they can provide ecological services such as phytoextraction, phytostabilization, and phytoprospection (Ginocchio and Baker, 2004), being for some authors considered a diversity hotspot region (Silveira et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Metallophytes communities of plants from FRG represent one of the most relevant for conservation purposes since they can provide ecological services such as phytoextraction, phytostabilization, and phytoprospection (Ginocchio and Baker, 2004), being for some authors considered a diversity hotspot region (Silveira et al, 2016). In FRG, sixty canga endemic plants were catalogued (Carmo and Jacobi, 2012); however, a few have been better characterized in an ecological context, as is the case of the leguminous Mimosa calondendron Mart.…”

Section: Introductionmentioning

confidence: 99%

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Alcaligenes faecalisassociated with Mimosa calodendron rizhosphere assist plant survival in arsenic rich soils

Felestrino

Assis

Lemes

et al. 2017

J. Soil Sci. Plant Nutr.

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The ferruginous rupestrian grasslands (FRG) in the Iron Quadrangle (IQ) are ecosystems characterized by rocky soils with reduced availability of water and nutrients, but high levels of metals. In order to comprehend the interference of microorganisms on the adaptive process of endemic plant Mimosa calodendrum (Fabaceae), bacteria associated with its roots and rhizosphere were isolated. Fourteen isolates were obtained and subsequently grown in the presence of different concentrations of arsenic (As) species. The isolate Mc250, an Alcaligenes faecalis strain, resisted to 10 mM of As (III) and 800 mM of As (V). In the presence of this strain, atomic spectrometer detected a reduction of 55% for As (III) and 72% for As (V) respectively in 10 mM and 500 mM solution. Scanning electron microscopy of this isolate demonstrated morphological modification and EDX spectroscopy revealed the presence of both As species adsorbed on the membrane, justifying the removal observed in the in vitro assays. To validate this potential removal of As in vivo, tomato plants were used as grown model in the presence and absence of A. faecalis in soil previously contaminated with 5 mM of As (III). After 14 days, plants from contaminated soil had their growth improved when compared to untreated control plants. All these results suggest for the first time that plant-associated bacteria from FRG-IQ present potential for soil rhizoremediation and may benefit the adaptive processes of plants in extreme environments including application in recovering degraded areas.

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Section: Pgpr and Plant Maintenance In Frg: Perspectivesmentioning

confidence: 99%

Section: Pgpr and Plant Maintenance In Frg: Perspectivesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Alcaligenes faecalisassociated with Mimosa calodendron rizhosphere assist plant survival in arsenic rich soils

Felestrino

Assis

Lemes

et al. 2017

J. Soil Sci. Plant Nutr.

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“…As crescentes ameaças às formações rupestres comprometem os serviços ecossistêmicos e faz-se necessária a implantação de estratégias de conservação e restauração mais eficazes dessas áreas (SILVEIRA et al, 2016). Com o objetivo de ampliar o conhecimento sobre a vegetação do Cerrado, principalmente sobre áreas de afloramentos rochosos, foi realizado o levantamento fitossociológico do cerrado rupestre do Salto de São Domingos, município de Piranhas, região Sudoeste do Estado de Goiás.…”

Section: Introductionunclassified

Estrutura Arbustivo-Arbórea De Cerrado Rupestre Da Região Sudoeste Do Estado De Goiás, Brasil

Leles¹,

Diniz²

2017

Enci Bio

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RESUMOO cerrado rupestre possui grande riqueza de espécies endêmicas e raras, mesmo assim apresenta uma área cada vez mais reduzida, principalmente devido à ação antrópica. O presente trabalho realizou o levantamento da estrutura arbustivoarbórea em uma área remanescente de cerrado rupestre, onde a visitação humana é intensa devido ao ecoturismo. Foram utilizadas 10 parcelas permanentes de 20 x 50 m (1 ha), sendo amostrados todos os indivíduos com diâmetro igual ou superior a 5,0 cm a 30 cm do solo. Foram calculados os valores absolutos e relativos de densidade, dominância, frequência, valor de importância e área basal, o índice de diversidade de Shannon (H') e o de uniformidade de Pielou (J). A densidade total da área foi de 543 indivíduos.ha -1 distribuídos em 58 espécies, 46 gêneros e 28 famílias. A área basal foi de 4,6 m². As famílias com maior número de espécies foram: Fabaceae (8) e Vochysiaceae (7). Quinze famílias foram representadas por uma única espécie e 16 espécies apresentaram apenas um indivíduo. Qualea parviflora, Davilla elliptica, Sclerolobium paniculatum var. subvelutinum, Miconia ferruginata, Caryocar brasiliense apresentaram os maiores índices de valor de importância. Foi registrada pela primeira vez no cerrado rupestre do estado de Goiás a espécie Hirtella gracilipes, típica da formação de Cerradão. O índice de Shannon (H') foi de 1,51 e o de uniformidade de Pielou (J) igual a 0,37, valores baixos quando comparados com outras áreas de cerrado rupestre, indicando que esta área pode estar sofrendo ações de degradação provocada principalmente pela intensa visitação humana. PALAVRAS-CHAVE: Afloramentos rochosos, flora lenhosa. Fitossociologia.

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Foliar water‐uptake strategies are related to leaf water status and gas exchange in plants from a ferruginous rupestrian field

Boanares¹,

Kozovits²,

Lemos-Filho³

et al. 2019

American J of Botany

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Premise Fog is a frequent event in Brazilian rupestrian field and plays an important role in the physiology of several plant species. Foliar water uptake (FWU) of fog may be fast or slow depending on the species. However, fog water may negatively affect CO2 assimilation. Thus, the interference in the water and carbon balance as a result of different strategies of FWU was evaluated to verify whether fog may mitigate possible water deficit in leaves. Methods Four plant species with different FWU strategies were studied in a ferruginous rupestrian field with frequent fog. Gas exchange and water potential were measured before dawn and at midday during the dry and rainy seasons, separating foggy from non‐foggy days during the dry season. Results The FWU speed negatively influences CO2 assimilation in the dry season, possibly because of its negative relationship with stomatal conductance, since reduced stomatal aperture impairs carbon entrance. Fog presence increased leaf water potential both in early morning and midday during the dry season. However, during the rainy season, the values of leaf water potential were lower at midday, than during the dry season with fog at midday, which favors leaf gas exchanges. Conclusions FWU interferes negatively, but briefly with CO2 assimilation. Nevertheless, FWU prevents water loss through transpiration and increases the water status of plants in the dry season. That is, FWU results in a compensation between CO2 assimilation and foliar hydration, which, in fact, is beneficial to the plants of this ecosystem.

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Ecology and evolution of plant diversity in the endangered campo rupestre: a neglected conservation priority

Abstract: International audienceno abstrac

Cited by 528 publications

References 145 publications

Alcaligenes faecalisassociated with Mimosa calodendron rizhosphere assist plant survival in arsenic rich soils

Alcaligenes faecalisassociated with Mimosa calodendron rizhosphere assist plant survival in arsenic rich soils

Estrutura Arbustivo-Arbórea De Cerrado Rupestre Da Região Sudoeste Do Estado De Goiás, Brasil

Foliar water‐uptake strategies are related to leaf water status and gas exchange in plants from a ferruginous rupestrian field

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