Evolution of the aquatic habit in Ludwigia (Onagraceae): Morpho-anatomical adaptive strategies in the Neotropics

Bedoya, Ana María; Madriñán, Santiago

doi:10.1016/j.aquabot.2014.10.005

Cited by 13 publications

(9 citation statements)

References 61 publications

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“…As an amphibious plant, it can have different forms as submerged, floating at the water's surface or emergent in terrestrial habitats, rooted in the sediment with floating or emergent shoots/leaves (Hussner et al., ). The phylogenetic reconstructions of the Ludwigia genus suggest that the aquatic distribution may result from a secondary colonization of these habitats by terrestrial plants (Bedoya & Madriñán, ). However, recently, specimens of L. grandiflora have propagated in wet meadows in France (Haury et al., ).…”

Section: Introductionmentioning

confidence: 99%

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Aquatic and terrestrial morphotypes of the aquatic invasive plant, Ludwigia grandiflora, show distinct morphological and metabolomic responses

Billet

Genitoni

Bozec

et al. 2018

Ecology and Evolution

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In the context of expansion of invasive species, survival of invasive plants is conditioned by their ability to adapt. In France, the water primrose Ludwigia grandiflora, an aquatic invasive species, invades yet wet meadows, leading to a depreciation of their fodder value. Understanding its potential adaption is necessary to its management, strong differences between both morphotypes were expected. So morphological and metabolic responses to terrestrial environment were analyzed for aquatic and terrestrial morphotypes. All morphological and biomass variables were greater in the terrestrial morphotype than the aquatic morphotype, independent of conditions. In terrestrial condition, both morphotypes showed a high production of sugars in root tissues, especially in the terrestrial morphotype and both morphotypes produced a low level of amino acids in shoot tissues. All results demonstrate that the terrestrial condition seems a stressful situation for both morphotypes, which activates glycolysis and fermentation pathways to improve their survival under hypoxic stress. But, only the terrestrial morphotype has been able to adjust its metabolism and maintain efficient growth. In the future, a differential transcriptomic analysis will be carried out to confirm this result.

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Section: Introductionmentioning

confidence: 99%

“…genetic reconstructions of the Ludwigia genus suggest that the aquatic distribution may result from a secondary colonization of these habitats by terrestrial plants (Bedoya & Madriñán, 2015). However, recently, specimens of L. grandiflora have propagated in wet meadows in France (Haury et al, 2011).…”

mentioning

confidence: 99%

Aquatic and terrestrial morphotypes of the aquatic invasive plant, Ludwigia grandiflora, show distinct morphological and metabolomic responses

Billet

Genitoni

Bozec

et al. 2018

Ecology and Evolution

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“…(8) indicated that the plant can grow and sustain hard environmental conditions producing high biomass in different habitats with different loads of pollutions and different salinity levels, but at certain limits of pollution it will be stop growth and became dry. The plant Produce high biomass 458g dry wt./m2 , 420 g dry wt./m2 and 400 g dry wt./m2 at sites C,B and A, respectively at autumn season , this may be due to that the plant has a great ecological plasticity and adaptation with different habitats under different pollution loads (Amer et al, 2016) and have an genetic plasticity with different water habitats and environmental variables (Bedoya & Madrinan 2015). The lower biomass produced by the plant was at winter season; 250g dry wt./m2,220 gdry wwt./m2 and 180 g dry wt./m2 at sites, B and A respectively.…”

Section: Haevy Metals Analysismentioning

confidence: 99%

Ecological performance of Ludwigia stolonifera ( Guill . & Perr. ) P.H. Raven under different pollution loads

Nafea¹

2019

Egypt. J. of Aquatic Biolo. and Fish.

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This study was conducted to assess the ecological performance of the aquatic macrophyte Ludwigia stolonifera (Guill. Perr.) P.H., family Onagraceae in three water habitats under different pollution loads. This emergent hydrophyte can grow and tolerate a wide range of habitats with different pollution levels (ecological plasticity) and produces high biomass (458g.dry wt. /m 2) in autumn at site C and (400 g. dry wt. /m 2) at site A, this indicated the survival in autumn across the year, while the lowest biomass was produced in winter season at site A (180 g. dry wt. /m 2). The plant can absorb and accumulate heavy metals in its tissues with high concentrations, especially in spring and so it could be taken as a good bioindicator for pollution and used in bioremoval of heavy metals from polluted water.

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“…As raízes que ocorrem em ambos os ambientes não apresentam similaridade entre si, haja vista que aquelas desenvolvidas em plantas d'água, possuem importante função de flutuação e armazenamento de gases, desnecessários naquelas que se desenvolveram em SLI. Pneumatóforos, dispositivos de flutuação, que ampliam a troca gasosa entre partes aéreas e todo o corpo da planta (Ellmore 1981), e raízes adventícias, presentes nos indivíduos d'água foram descritas por Bedoya & Madriñán (2014) para L. helminthorrhiza, indicando a importância deste sistema robusto de raízes plenamente adaptado ao ambiente anaeróbio, servindo de apoio ou mesmo substituindo o sistema de raiz primário. Em resposta ao encharcamento do solo ou completa submersão, ocorre um aumento na quantidade de espaços intercelulares presentes nas raízes secundárias e adventícias (Yamamoto et al 1995, Kolb et al 1998, para a oxigenação da rizosfera (Hook & Scholtens 1978), além disso, permite a captação de nutrientes diretamente da água (Jackson & Drew 1984, Rich et al 2012.…”

Section: Análise Comparativa Morfológicaunclassified

“…Raiz: Raízes dimórficas já haviam sido descritas por Bedoya & Madriñán (2014) para L. helminthorrhiza, ocorrendo raízes com crescimento descendentes e raízes com crescimento ascendentes, que equivalem às raízes pilíferas e pneumatóforos categorizadas no presente estudo. A raiz adventícia aerenquimatosa (4ª raiz) mostrou-se semelhante a raiz adventícia rósea, diferindo apenas em um maior desenvolvimento do aerênquima, o que permite inferir que estas raízes possuem a mesma função, possuindo apenas diferentes graus de plasticidade e aclimatação à água.…”

Section: Análise Comparativa Anatômicaunclassified

RESPOSTAS MORFOLÓGICAS DE Ludwigia helminthorrhiza (MART.) H.HARA (ONAGRACEAE) À SAZONALIDADE HÍDRICA DO PANTANAL

2019

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Resumo: Em planícies de inundação, espécies de macrófitas respondem à sazonalidade hídrica por meio de alteração morfológica. Órgãos vegetativos de Ludwigia helminthorrhiza (Myrtales, Onagraceae) podem desenvolver-se em ambiente aquático e em solo livre de inundação. Acreditamos que órgãos vegetativos de plantas do segundo ambiente não apresentem adaptações típicas (e.g., aerênquima, redução de lignificação, desenvolvimento de raízes adventícias) de ambientes aquáticos. Mediu-se o comprimento, largura e espessura do limbo; espessura do caule; comprimento dos entrenós; e comprimento das raízes de indivíduos dos dois ambientes. Analisou-se a anatomia das porções medianas dos órgãos e quantificou-se os estômatos. Órgãos vegetativos foram maiores nas plantas desenvolvidas na água; densidade de estômatos semelhante nas faces do limbo nos dois ambientes, entretanto maior no solo seco. Tecidos de adaptação à anoxia, como aerênquima, expresso em maior quantidade nas plantas d'água, facilitando o transporte de gases, reduzindo fitotoxinas e suportando a planta. Há anatomia similar nos indivíduos dos dois ambientes, contudo ausência ou redução do aerênquima nos órgãos aéreos das plantas de solo seco, com presença apenas de raiz adventícia "principal" e laterais pilíferas. Nas plantas d'água observou-se quatro tipos de raízes adventícias (pneumatóforos e raiz com acréscimo de aerênquima). Evidenciamos plasticidade morfológica, importante para o sucesso no estabelecimento e sobrevivência da espécie no Pantanal.Palavras-chave: anatomia ecológica; lombrigueira; macrófita aquática. MORPHOLOGICAL RESPONSES OF Ludwigia helminthorrhiza (MART.) H.HARA (ONAGRACEAE) TO PANTANAL WATER SEASONALITY.In floodplains, species of macrophytes respond to water seasonality through morphological alteration. Vegetative organs of Ludwigia helminthorrhiza (Myrtales, Onagraceae) can develop in aquatic environment and in soil free of flood. We believe that vegetative organs of plants of the second environment do not present typical adaptations (e.g. aerenchyma, lignification reduction, adventitious root development) of aquatic environments. The limb length, width and thickness; stem thickness; length of internodes; and roots length of individuals in the two environments were measured. The anatomy of the medial portions of the organs was analyzed and the stomata quantified. Vegetative organs were larger in plants developed in water; density of stomata similar to the limb faces in both environments, but higher in the dry soil. Adapting tissues to anoxia, as aerenchyma, expressed in greater quantity in water Santana et al. | 875 Oecol. Aust. 23(4): 874-890, 2019 plants, facilitating the gases transport, reducing phytotoxins and giving plant support. There is similar anatomy in the individuals of both environments, however absence or reduction of aerenchyma in the aerial organs of dry soil plants, with presence of only "principal" adventitious root and lateral piliferous. In the water plants four types of adventitious roots (pneumatophores and root wi...

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Evolution of the aquatic habit in Ludwigia (Onagraceae): Morpho-anatomical adaptive strategies in the Neotropics

Cited by 13 publications

References 61 publications

Aquatic and terrestrial morphotypes of the aquatic invasive plant, Ludwigia grandiflora, show distinct morphological and metabolomic responses

Aquatic and terrestrial morphotypes of the aquatic invasive plant, Ludwigia grandiflora, show distinct morphological and metabolomic responses

Ecological performance of Ludwigia stolonifera ( Guill . & Perr. ) P.H. Raven under different pollution loads

RESPOSTAS MORFOLÓGICAS DE Ludwigia helminthorrhiza (MART.) H.HARA (ONAGRACEAE) À SAZONALIDADE HÍDRICA DO PANTANAL

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