Phosphorus Utilization Efficiency in Populations of Narrow-Leaf Birdsfoot Trefoil

Kade, M.; Pagani, Eduardo; Mendoza, Rodolfo

doi:10.1081/css-120017431

Cited by 7 publications

(7 citation statements)

References 21 publications

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“…Seed samples from the 36 plants collected were submitted to the flavonol testing procedure [5] in order to verify that they belonged to the species L. glaber (2n = 2x =12). After the preconditioning period, three healthy donor plants from each population were selected at random and cloned by stem cuttings [6]. The cuttings were planted in undrained plastic pots, which had been filled either with 200 g of soil (dry weight) from the origin sites (Tab.…”

Section: Collection and Propagation Of Plant Materialsmentioning

confidence: 99%

“…She argued that the high variability of this tetraploid species enabled it to spread into a large number of different habitats. Specifically in L. glaber (2n = 2x = 12), genetically controlled variation was assessed for different populations among physiological characters related to phosphorus (P) nutrition [6,8]. Also, Vignolio et al [13] reported morphological adaptations under flooding conditions in five populations.…”

Section: Introductionmentioning

confidence: 99%

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A morphological study of populations of Lotus glaber Mill. (Fabaceae)

2003

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The pasture legume Lotus glaber Mill. has colonized the Flooding Pampa (Argentina) in spite of high environmental heterogeneity. Morphological characters of plants from different populations were compared to evaluate if plastic or genetic differentiation could have contributed to such a widespread geographic distribution. Plants were collected at random from six different sites and grown in a greenhouse for five months. Clonal replicates of those plants were cultivated in pots on a native and a common soil. Populations were replicated three times and each replicate (pot) had three plants from the same clone. The number of primary shoots, internode length, leaf length and width and shoot length were recorded and the significance of population mean differences determined. All characters, except for leaf width, differed between populations on each sampling in both sets of experiments. This variability is therefore best explained by genetic differentiation of the populations. morphological variation / environmental heterogeneity / naturalized species / Lotus glaber Mill. / genetic differentiation Résumé-Étude de la variabilité morphologique dans les populations de Lotus glaber Mill. (Fabaceae). La légumineuse fourragère Lotus glaber Mill a colonisé la Pampa inondée en Argentine malgré la très grande hétérogénéité des conditions environnementales. Dans cette étude nous comparons la morphologie de différentes populations afin de déterminer si une plasticité phénotypique ou une différenciation écotypique ont permis une aussi large dispersion géographique de l'espèce. Des plantes représentatives de 6 sites ont été transplantées et cultivées en serre durant 5 mois. Des boutures de ces différents plants ont également été cultivées dans des pots remplis avec le sol original des sites correspondants ainsi qu'avec un sol unique provenant d'un autre site. Le nombre de pousses primaires, la longueur des inter-noeuds, la longueur et la largeur des feuilles et la longueur des pousses ont été mesurées et la validité statistique des différences à la moyenne de la population a été déterminée. Toutes les caractéristiques morphologiques, sauf la largeur des feuilles ont montré des différences pour chaque échantillon et dans chaque série d'expériences. Ce type de variabilité pourrait être mieux expliqué par une différenciation d'écotypes que par une plasticité phénotypique. variabilité morphologique / hétérogénéité environnementale / adaptation des espèces / Lotus glaber Mill. / écotype

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Section: Collection and Propagation Of Plant Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A morphological study of populations of Lotus glaber Mill. (Fabaceae)

2003

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“…Lotus glaber Mill., Lotus tenufolius Reichb., Lotus corniculatus L. subsp. tenufolius L. P. Fourn) is a perennial pasture legume that has naturalized in the flooding Pampa region of Argentina (Kade et al 2003). Previous studies have reported L. tenuis to be salt tolerant (Ayers 1948;Schachtman and Kelman 1991;Rogers et al 1997a) and waterlogging tolerant (Vignolio et al 1999;Mendoza et al 2005;Striker et al 2005) and have suggested this species has potential for use in saline discharge areas (Dear et al 2003).…”

Section: Introductionmentioning

confidence: 97%

Growth and ion relations in response to combined salinity and waterlogging in the perennial forage legumes Lotus corniculatus and Lotus tenuis

2006

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Lotus tenuis (Wadst. & Kit.) is a perennial legume widely grown for pasture in the flood-prone and salt affected Pampa region of Argentina. The physiology of salt and waterlogging tolerance in L. tenuis (four cultivars) was evaluated, and compared with Lotus corniculatus (three cultivars); the most widely cultivated Lotus species. Overall, L. tenuis cultivars accumulated less Na + and Cl -, and more K + in shoots than L. corniculatus cultivars, when exposed to 200 mM NaCl for 28 days in aerated or in stagnant solutions. Root porosity was higher in L. tenuis cultivars due to greater aerenchyma formation. In a NaCl dose-response experiment (0-400 mM NaCl in aerated solution), L. tenuis (cv. Chaja) accumulated half as much Cl -in its shoots than L. corniculatus (cv. San Gabriel) at all external NaCl concentrations, and about 30% less shoot Na + in treatments above 250 mM NaCl. Ion distributions in shoots were determined for plants at 200 mM NaCl. L. tenuis (cv. Chaja) again accumulated about half as much Cl -in old leaves, young leaves and stems, compared with concentrations in L. corniculatus (cv. San Gabriel). There were not, however, significant differences between the two species for Na + concentrations in the various shoot tissues. The higher root porosity, and maintenance of lower shoot Cl -and Na + concentrations in L. tenuis, compared with L. corniculatus, contributes to the greater tolerance to combined salt and waterlogging stress in L. tenuis. Moreover, significant variation for tolerance to combined salinity and waterlogging stress was identified within both L. tenuis and L. corniculatus.

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“…This characteristic shows a remarkable difference with the population from site 3 coinciding with the differences in the observed morphological characteristics and their phosphorus absorbing capacity reported in previous works. 21,22 According to the results obtained in this work, it is possible to establish differences between the populations based on the structure of the flavonoid aglycones and their glycosides. Differences in the aglycone composition were observed in populations from all the sites studied.…”

Section: Multivariate Analysesmentioning

confidence: 99%

“…20 Previous studies have suggested the existence of L. tenuis ecotypes which can be differentiated from one another by some morphologic attributes 5 but also by a different capacity to absorb phosphorus from P-deficient soils. 6 Furthermore, Kade et al 21 have reported that the L. tenuis population growing in site 3 (saline-sodic) exhibited differences in the efficiency of P utilization with the population growing in site 1 (non saline, non sodic). In addition, L. tenuis from populations of site 3 showed longer shoots, internodes and leaflets when compared to the ones belonging to the other five populations (sites 1, 2 and 4 were included) when growing in both the original and a common soil.…”

Section: Multivariate Analysesmentioning

confidence: 99%

Flavonoids of Lotus tenuis (Waldst. & Kit.) as markers of populations growing in soils of different saline and hydrologic conditions

Ferraro

Filip

Pero

et al. 2010

J. Braz. Chem. Soc.

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Lotus tenuis Waldst. et Kit. (=Lotus glaber Mill.) é uma planta leguminosa muito difundida que cresce naturalmente em pastagens da Flooding Pampas, na Argentina. Uma das hipóteses para explicar a disseminação de L. tenuis nessa área, é a diferenciação de ecotipos. O objetivo deste trabalho foi investigar os compostos flavonoides presentes em populações de L. tenuis que crescem em uma grande variedade de solos. Amostras de cinco populações que crescem em solos com diferentes características foram coletados, cultivados em estufas e comparados de acordo com seu perfil de flavonoides. Glicosídeos dos seguintes flavonoides foram detectados: quercetina, 7-metóxi-quercetina éter, kaempferol, 7-metóxi-kaempferol éter e isorhamnetina. Somente as mostras de solos salino-sódicos mostraram agliconas metiladas: 7-metóxi-kaempferol éter e 7-metóxi-quercetina éter. Os últimos compostos poderiam, portanto, ser considerados como a expressão de uma adaptação bioquímica e sugerem uma diferenciação em ecotipo. Mill.) is a widely spread leguminous plant which grows naturally in low grasslands of the Flooding Pampas of Argentina. One of the hypothesis to explain the succesful spread of L. tenuis in this area, is the ecotypes differentiation. The aim of this work was to investigate the flavonoid compounds present in L. tenuis plant populations which grow in a variety of soils. Individuals from five populations growing in soils having different characterisctics were collected, cultivated in a glasshouse and compared according to their flavonoid profile. Glycosides of the following flavonoids were detected: quercetin, quercetin 7-methyl ether, kaempferol, kaempferol 7-methyl ether and isorhamnetin. Only those samples from a saline-sodic lowland, showed methylated aglycones: kaempferol 7-methyl ether and quercetin 7-methyl ether. The latter compounds could therefore be considered the expression of a biochemical adaptation and suggest an ecotype differentiation. Lotus tenuis Waldst. et Kit. (=Lotus glaber

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Phosphorus Utilization Efficiency in Populations of Narrow-Leaf Birdsfoot Trefoil

Cited by 7 publications

References 21 publications

A morphological study of populations of Lotus glaber Mill. (Fabaceae)

A morphological study of populations of Lotus glaber Mill. (Fabaceae)

Growth and ion relations in response to combined salinity and waterlogging in the perennial forage legumes Lotus corniculatus and Lotus tenuis

Flavonoids of Lotus tenuis (Waldst. & Kit.) as markers of populations growing in soils of different saline and hydrologic conditions

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