Drought-tolerant naturalized populations of<i>Lotus tenuis</i>for constrained environments

Acuña, Hernán; Inostroza, Luis; Sánchez, Ma. Paulina; Tapia, Gerardo

doi:10.1080/09064710902800224

Cited by 13 publications

(9 citation statements)

References 29 publications

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“…Lotus tenuis is a diploid species with a taproot (Miñón et al, 1990) that grows in soils with a wide range of pH and water and nutrient availability (Messa et al, 2008). It tolerates flooding, drought, and salinity; this gives it added value when comparing it with other legumes such as alfalfa (Medicago sativa L.) or white clover (Trifolium repens L.) (Striker et al, 2005;Acuña et al, 2010;Teakle et al, 2010). Lotus uliginosus is a diploid species with a shallow root system that gives rise to a network of rhizomes, stolons, and fibrous roots (Hernández et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Phosphorus absorption and use efficiency by Lotus spp. under water stress conditions in two soils: A pot experiment

Castillo¹,

Acuña

Zagal³

et al. 2013

Chilean J. Agric. Res.

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The response to P and water deficiencies of forage Lotus species has not been sufficiently studied in the Andisol and Vertisol soil orders in Chile's marginal areas. A pot experiment under cover was carried out between October 2007 and March 2008 to study the effects of P and soil water availability (SWA) on DM production, P absorption, and P use efficiency in Lotus spp. The experiment included three Lotus (L. corniculatus L., L. tenuis Waldst. & Kit. ex Willd., and L. uliginosus Schkuhr) species, two soils (Andisol and Vertisol), two contrasting P levels (low and high), and two SWA levels (10% and 100%). A completely randomized design with a 3 × 2 × 2 × 2 factorial arrangement with four replicates was used. Accumulated shoot and root DM, P absorption and efficiency, and arbuscular mycorrhizal (AM) colonization were measured. Phosphorus absorption was significantly higher in Andisol with 100% SWA and high P in the three species, which was reflected in P efficiency where the species exhibited higher P absorption efficiency (PAE) and P utilization efficiency (PUE) with low P, and mean of the three species with low P and high SWA. When the P level was low, L. uliginosus showed the highest PAE and L. corniculatus exhibited the highest PUE. Phosphorus efficiency was also influenced by AM colonization since on the average mycorrhization in the three species was significantly higher in the low P treatments. Differences existed among species for DM production, response to P, P absorption, PAE, and PUE.

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Section: Introductionmentioning

confidence: 99%

Phosphorus absorption and use efficiency by Lotus spp. under water stress conditions in two soils: A pot experiment

Castillo¹,

Acuña

Zagal³

et al. 2013

Chilean J. Agric. Res.

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“…It was reduced by 47%, 56%, and 64% compared with the control for V. narbonensis, V. sativa, and V. villosa, respectively, under severe water deficit. Such reductions under water stress have been reported for many annual or perennial forages legumes (Busso et al, 1998;Acuña et al, 2010;Erice et al, 2010). LA reductions induced by water restrictions negatively affects photosynthesis and thus biomass production.…”

Section: Discussionmentioning

confidence: 60%

Agronomic performances of three vetch species growing under different drought levels

Mezni

Chaïbi

2014

Chilean J. Agric. Res.

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The current challenge of agriculture is to get the best yields while overcoming frequent water deficit conditions. The objective of this study was to compare performances of three vetch species (Vicia narbonensis L., V. sativa L., and V. villosa Roth) subjected to water stress. Plants were sown in pots under rainout shelter and submitted to four water regimes: control (100% field capacity [FC]), 80%, 60%, and 40% FC through 3 yr experiment. Results showed that V. narbonensis had the smallest declines in all the studied variables in response to water restriction but the highest water use efficiency (WUE) and stress tolerance index (STI) in both control and water-treated plants. This indicates the greater tolerance of this species to water constraint and its better water use. Vicia villosa was characterized by drastic declines in leaf area and DM yield (75% and 64%, respectively). It had also the smallest WUE and STI suggesting its low adaptation to water stress. Vicia sativa showed severe reductions in seed yield and yield components; accordingly, it was the most sensitive species in terms of seed yield. The three species implied avoidance strategies to cope with water stress. The different levels of drought tolerance explain the species ecological distribution in Tunisia.

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“…Different lines of annual and perennial legumes have been tested to evaluate their agronomic potential in semi-arid climates (Small 2003;Caravaca et al 2003;Merou and Papanastasis 2009). Different legume cultivars have also been tested for drought (Acuna et al 2010;Kostopoulou et al 2010), frost (Ratinam et al 1994;Meyer and Badaruddin 2001), flooding (Vignolio et al 1999), cold (Gan et al 2009) and acid (Howieson et al 1995) tolerance, as well as for winter survival (Annicchiarico and Iannucci 2007). Different perennial legumes that can use phosphorus efficiently were screened for their potential use in revegetating Australian soils with phosphorus deficiency (Pang et al 2010).…”

Section: Selection Of New Legumes and The Breeding Of Old Traitsmentioning

confidence: 99%

Legumes in the reclamation of marginal soils, from cultivar and inoculant selection to transgenic approaches

Peña¹,

Pueyo²

2011

Agron. Sustain. Dev.

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Mineral nitrogen deficiency is a frequent characteristic of arid and semi-arid soils. Biological nitrogen fixation by legumes is a sustainable and environmentalfriendly alternative to chemical fertilization. Therefore, legumes have a high potential for the reclamation of marginal soils. Such issue is becoming more urgent due to the ever-rising requirement for food and feed, and the increasing extension of salinized and degraded lands, both as a consequence of global change and irrigation practices. This manuscript reviews current research on physiological and molecular mechanisms involved in the response and tolerance to environmental stresses of the Rhizobiumlegume symbiosis. We report in particular recent advances on the isolation, characterization, and selection of tolerant rhizobial strains and legume varieties, both by traditional methods and through biotechnological approaches. The major points are the following. (1) Understanding mechanisms involved in stress tolerance is advancing fast, thus providing a solid basis for the selection and engineering of rhizobia and legumes with enhanced tolerance to environmental constraints. (2) The considerable efforts to select locally adapted legume varieties and rhizobial inocula that can fix nitrogen under conditions of drought or salinity are generating competitive crop yields in affected soils. (3) Biotechnological approaches are used to obtain improved legumes and rhizobia with enhanced tolerance to abiotic stresses, paying particular attention to the sensitive nitrogen-fixing activity. Those biotechnologies are yielding transgenic crops and inocula with unquestionable potential.In conclusion, the role of legumes in sustainable agriculture, and particularly, their use in the reclamation of marginal lands, certainly has a very promising future.

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Drought-tolerant naturalized populations ofLotus tenuisfor constrained environments

Cited by 13 publications

References 29 publications

Phosphorus absorption and use efficiency by Lotus spp. under water stress conditions in two soils: A pot experiment

Phosphorus absorption and use efficiency by Lotus spp. under water stress conditions in two soils: A pot experiment

Agronomic performances of three vetch species growing under different drought levels

Legumes in the reclamation of marginal soils, from cultivar and inoculant selection to transgenic approaches

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