Aluminium tolerance in barley (Hordeum vulgare L.): Physiological mechanisms, genetics and screening methods

Wang, Junping; Raman, Harsh; Zhang, Guoping; Mendham, NJ; Zhou, Meixue

doi:10.1631/jzus.2006.b0769

Cited by 116 publications

(94 citation statements)

References 140 publications

(173 reference statements)

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“…Após 96 horas de crescimento, foram medidos os comprimentos da raiz principal e da raiz secundária maior, com paquímetro digital, modelo 727, (Starret, Ohio, USA). A medida do comprimento das duas raízes maiores é considerada a mais apropriada avaliação para estudos genéticos e moleculares e fornecem uma boa separação dos genótipos tolerantes e sensíveis ao alumínio (Wang et al, 2006).…”

Section: Methodsunclassified

Tolerância de genótipos de cereais de inverno ao alumínio em cultivo hidropônico e em campo

Portaluppi

Brammer

Magalhães

et al. 2010

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi determinar a capacidade de crescimento radicular de 75 genótipos de cereais de inverno em cultivo hidropônico, em diferentes concentrações de alumínio, avaliar a relação entre o grau de tolerância/sensibilidade, em solução hidropônica, e a resistência/suscetibilidade ao crestamento em campo. Os cereais cevada, triticale, centeio, trigo e Aegilops tauschii foram avaliados em hidroponia, com concentrações de Al 3+ que variaram entre 0,5 (cevada), 2 e 6 (triticale), 6 e 10 (centeio) e 2 mg L -1 (trigo e Ae. tauschii). Os delineamentos experimentais foram inteiramente casualizados. Em campo, foram avaliados os mesmos genótipos, exceto Ae. tauschii, em solo com pH 4,4 e 4,85, corrigido a 1/2 e 1/4 do índice SMP. Utilizou-se uma escala de notas com variação de escores de 0,5 (altamente resistente) a 5 (altamente suscetível). Foi observada elevada relação entre a tolerância ao alumínio em hidroponia e a resistência ao crestamento em campo. A seleção de cereais em meio hidropônico pode ser considerada eficiente como ferramenta de apoio aos programas de melhoramento genético para essa característica.Termos para indexação: Hordeum vulgare, Secale cereale, Triticum aestivum, crestamento, resistência, suscetibilidade, toxicidade. Tolerance of small graine cereal genotypes to aluminum on hydroponic and field cultivationAbstract -The objective of this work was to determine the root growth capacity of 75 genotypes of small graine cereals in hydroponic culture under different aluminum concentrations, and to assess the relationship betwen the level of tolerance/sensitivity in hydroponic solution and the resistance/susceptibility index in the field. Barley, triticale, rye, wheat and Aegilops tauschii were evaluated in hydroponics, with Al 3+ concentrations that varied between 0.5 (barley), 2 and 6 (triticale), 6 and 10 (rye) and 2 mg L -1 (wheat and Ae. tauschii). The experiments' designs were completely randomized. In the field trial, the same genotypes were assessed, except for Ae. tauschii, in soil with pH 4.4 and 4.85 adjusted to 1/2 and 1/4 of the SMP index. A score scale ranging from 0.5 (highly resistant) to 5 (highly susceptible) was used. A strong relationship between aluminum tolerance in hydroponics and resistance to blight in the field was observed. Cereals selection in hydroponic medium can be considered an efficient tool to support breeding programs for this characteristic.Index terms: Hordeum vulgare, Secale cereale, Triticum aestivum, blight, resistance, sensitivity, toxicity. IntroduçãoA toxicidade do alumínio, nos solos ácidos, é um dos fatores que mais limitam a produção agropecuária. No Brasil, 68% dos solos têm elevada acidez, toxicidade de alumínio e baixa disponibilidade de fósforo (Guimarães, 2005). Cultivares de cereais de inverno suscetíveis ao Al 3+ apresentam, como sintomas, raízes atrofiadas, folhas amarelecidas, formação de espigas rudimentares, com poucas ou até mesmo sem espiguetas, o que é conhecido como crestamento.A combinação de métodos de análise como o cu...

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Section: Methodsunclassified

Tolerância de genótipos de cereais de inverno ao alumínio em cultivo hidropônico e em campo

Portaluppi

Brammer

Magalhães

et al. 2010

Pesq. agropec. bras.

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“…In recent years, there has been a significant progress on our understanding of the shoot-growth responses of plants to aluminum toxicity and drought (Aftab et al 2010;Beebe et al 2009Beebe et al , 2010Blum 2010;Chaves et al 2003;Chen 2006;Manavalan et al 2009;Okiyo et al 2010;Wang et al 2006;Zhang et al 2007). The effect of Al and drought on shoot and root growth and the factors responsible for the inhibition of root and shoot growth owing to Al toxicity and drought stress are depicted in Fig.…”

Section: Shoot-growth Response Of Plants To Aluminium Toxicity and Drmentioning

confidence: 99%

“…Compiled from Yang et al (2012) It has been reported that Al toxicity restricts the yield of many crops particularly in regions with acid subsoils throughout the world (Sumner et al 1986). Aluminium toxicity decreases drought resistance and the use of subsoil nutrients (Wang et al 2006). Deleterious effects of subsoil soil-acidity on crop yield will thus be influenced by the extent to which a plant depends on the subsoil for supply of water and nutrients, especially when the topsoil dries out (Jozefaciuk and Szatanik-Kloc 2001;Stodart et al 2007;Tang et al 2001Tang et al , 2003a.…”

Section: Interaction Of Aluminium-drought Stresses On Crop Yieldmentioning

confidence: 99%

Interaction of aluminium and drought stress on root growth and crop yield on acid soils

2013

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Background Aluminium (Al) toxicity and drought stress are two major constraints for crop production in the world, particularly in the tropics. The variation in rainfall distribution and longer dry spells in much of the tropics during the main growing period of crops are becoming increasingly important yield-limiting factors with the global climate change. As a result, crop genotypes that are tolerant of both drought and Al toxicity need to be developed. Scope The present review mainly focuses on the interaction of Al and drought on root development, crop growth and yield on acid soils. It summarizes evidence from our own studies and other published/related work, and provides novel insights into the breeding for the adaptation to these combined abiotic stresses. The primary symptom of Al phytotoxicity is the inhibition of root growth. The impeded root system will restrict the roots for exploring the acid subsoil to absorb water and nutrients which is particularly important under condition of low soil moisture in the surface soil under drought. Whereas drought primarily affects shoot growth, effects of phytotoxic Al on shoot growth are mostly secondary effects that are induced by Al affecting root growth and function, while under drought stress root growth may even be promoted. Much progress has recently been made in the understanding of the physiology and molecular biology of the interaction between Al toxicity and drought stress in common bean (Phaseolus vulgaris L.) in hydroponics and in an Al-toxic soil. Conclusions Crops growing on acid soils yield less than their potential because of the poorly developed root system that limits nutrient and water uptake. Breeding for drought resistance must be combined with Al resistance, to assure that drought resistance is expressed adequately in crops grown on soils with acid Al-toxic subsoils.

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“…Tolerance to acid soils differs greatly among cereal species, and barley is usually considered the most susceptible crop (Garvin and Carver, 2003;Zhu et al, 2003;Wang et al, 2006;) Paunovic and Madic, 2011. This fact could be used as an explanation for the very friendly response of barely to the applied treatment in our study.…”

Section: Resultsmentioning

confidence: 99%

Response of soybean and barley to Fertdolomite application on acid soil

et al. 2017

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Abstract:The stationary field experiment with the application of granulated dolomite (MgCO 3 x CaCO 3 ) enriched with nitrogen, phosphorus and potassium (Fertdolomite: 24.0 % CaO + 16.0 % MgO + 3.0 % N + 2.5 % P 2 O 5 + 3.0 % K 2 O) in rates 0, 5, 10, 20, 30 and 40 t ha -1 on standard fertilization was started on 13 th November 2007 on the acid soil (pH in 1n KCl: 3.90). The trial was conducted by randomized block design in four replicates (basic plot 40 m 2 ). Standard fertilization of trial was applied in the next years for crops in rotation. In this study the response of soybean (2010) and winter barley (2012/2013) was shown. The average grain yield of soybean was 4830 kg ha -1 with variation among the treatments ranging from 4341 to 5361 kg ha -1 . At the rates 10 t ha -1 and 20 t ha -1 soybean yields were significant increased for 8% and 16%, respectively and additionally by 6% at the highest rate of fertolomite. Fertdolomite had a moderate positive effect on protein contents in grain, while oil content was independent on the treatments. The average grain yield of barley was quite low (3630 kg ha -1 ), mainly due to low ears density (average 493 per m 2 ) which was affected by oversupplies of precipitation in winter period under less permeable soil conditions. Extreme variations of precipitation regime are in connection with climatic change. Due to the application of 10 and 20 t ha -1 of Fertdolomite, yields of barley were significantly increased by 20% and 34%, respectively. However, the rates of 40 t ha -1 showed a non-significant difference of the barley yield as compared to the control level. The ear densities were significantly increased by application ≥ 10 t ha -1 Fertdolomite rates. Improvement of soil status by liming, adequate fertilization and similar managements contribute to the alleviation of detrimental effects of soil limitations and recent climate change on field crop yields.

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Aluminium tolerance in barley (Hordeum vulgare L.): Physiological mechanisms, genetics and screening methods

Cited by 116 publications

References 140 publications

Tolerância de genótipos de cereais de inverno ao alumínio em cultivo hidropônico e em campo

Tolerância de genótipos de cereais de inverno ao alumínio em cultivo hidropônico e em campo

Interaction of aluminium and drought stress on root growth and crop yield on acid soils

Response of soybean and barley to Fertdolomite application on acid soil

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