Tolerância ao alumínio em porta-enxertos somaclonais de macieira cultivados em solução nutritiva

Dantas, Adriana Cibele de Mesquita; Fortes, Gérson Renan de Luces; Silva, João Baptista da; Nezi, Adriano Nunes; Rodrigues, Andressa Peripolli

doi:10.1590/s0100-204x2001000400004

Cited by 9 publications

(6 citation statements)

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“…In coffee (BRACCINI et al, 1998a) and apple (DANTAS et al, 2001) In coffee (BRACCINI et al, 1998a) and apple (DANTAS et al, 2001) plants, one of the main effects of Al in the shoot was the shortening of internodes, resulting in plants with reduced height.…”

Section: Resultsmentioning

confidence: 99%

“…Several studies have been conducted using nutrient solutions to determine the Al tolerance of perennial species (BRACCINI et al, 1998a;DANTAS et al, 2001;TECCHIO et al, 2006;MATTIELLO et al, 2008;MACEDO et al, 2011). Aluminum toxicity manifests initially as a reduced rate of root elongation after contact with a solution containing Al (HARTWIG et al, 2007), and drastic reduction in shoot growth (BEUTLER;FAQUIN, 2001).…”

Section: Introductionmentioning

confidence: 99%

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Effects of aluminum on plant growth and nutrient uptake in young physic nut plants

et al. 2012

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Aluminum (Al 3+) toxicity is a major limiting factor to crop productivity in acid soils. The effects of aluminum on root and shoot growth of physic nut (Jatropha curcas L.) young plants and, the uptake and distribution of phosphorus, calcium, magnesium and aluminum in the roots and shoots were investigated in the present study. Plants were grown in 2.5L pots in a greenhouse. After fourteen days of adaptation to nutrient solution, plants were exposed to Al concentrations of 0, 370, 740, 1,100 and 1,480 μmol L -1 , corresponding to an active Al 3+ solution of 13.3, 35.3, 90.0, 153.3 and 220.7 μmol L -1 , respectively. The dry matter partitioning between roots, stems and leaves, and the concentrations of P, Ca, Mg and Al in plant tissue, were measured after 75 days exposure to Al. The increasing level of Al 3+ activity in solution progressively decreased the growth of the shoot and root of physic nut plants, and at the two highest active Al 3+ levels, plants showed morphological abnormalities typical of the toxicity caused by this metal. Higher Al 3+ activity reduced P concentrations in leaves and Ca and Mg in leaves and roots of physic nut, demonstrating the effect of Al on the uptake, transport and use of these nutrients by plants. The Al accumulated preferentially in the roots of physic nut, whereas only a small amount was transported to shoots. Key words: Jatropha curcas, aluminum toxicity, aluminum tolerance Resumo

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of aluminum on plant growth and nutrient uptake in young physic nut plants

et al. 2012

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“…Pela análise dos dados, pode-se observar a distinção de dois grupos: grupo I (limoeiro 'Cravo', limoeiro 'Rugoso da África', limoeiro 'Volcameriano', tangerineira 'Cleópatra', tangerineira 'Sunki' e citrangeiro 'C-13') e grupo II (trifoliata). A dissimilaridade dos grupos de porta-enxertos da laranjeira 'Folha Murcha' tornou-se mais evidente para o manejo da cobertura do solo com gramínea em relação à leguminosa, com exceção dos teores de nutrientes foliares (Figuras 1, 2 e 3), indicando a influência do manejo da cobertura do solo nos estudos de porta-enxertos e sistema de manejo do solo, como também foi observado por Dantas et al (2001), Theodoro et al (2003) Independentemente da cobertura do solo na entrelinha, observa-se distinção na produção, número de frutos e desenvolvimento vegetativo das plantas entre os porta-enxertos em dois grupos, com similaridade entre os porta-enxertos limoeiro ('Cravo' e 'Rugoso da África'), tangerineira ('Sunki' e 'Cleópatra') Quadro 3. Teores médios de nutrientes nas folhas de laranjeira 'Folha Murcha' enxertada sobre sete portaenxertos e dois sistemas de manejo da cobertura do solo…”

Section: Resultsunclassified

Dissimilaridade de porta-enxertos da laranjeira 'folha murcha' sob dois sistemas de manejo de cobertura permanente do solo

Fidalski

Scapim

Stenzel

2007

Rev. Bras. Ciênc. Solo

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RESUMOOs porta-enxertos de citros são dependentes do sistema de manejo do solo nas entrelinhas. Este trabalho foi realizado com o objetivo de identificar a dissimilaridade de sete porta-enxertos para a laranjeira 'Folha Murcha' em dois sistemas de manejo da cobertura de um Argissolo Vermelho distrófico latossólico. O estudo foi realizado na Estação Experimental do IAPAR, em Paranavaí. O delineamento experimental foi de blocos ao acaso com quatro repetições, com gramínea mato-grosso ou batatais (Paspalum notatum Flügge) em três blocos e leguminosa amendoim forrageiro (Arachis pintoi Krap. & Greg.) em um bloco. A produção, o desenvolvimento vegetativo e os nutrientes nas folhas da laranjeira 'Folha Murcha' foram avaliados anualmente (1997 a 2002). As análises multivariadas basearam-se nas variáveis canônicas e nos componentes principais, agrupando-os pelo método Tocher. O manejo da cobertura do solo com a leguminosa amendoim forrageiro Arachis pintoi diminui a dissimilaridade dos grupos de portaenxertos da laranjeira 'Folha Murcha'. O manejo da cobertura do solo com a gramínea Paspalum notatum aumenta a dissimilaridade dos grupos de portaenxertos da laranjeira 'Folha Murcha' com a inclusão dos teores dos nutrientes foliares, da produção de frutos e do desenvolvimento vegetativo das plantas. A gramínea Paspalum notatum é o melhor sistema de manejo da cobertura do solo para avaliação do comportamento de porta-enxertos da laranjeira 'Folha Murcha'. Termos de indexação:Citrus sinensis, manejo do solo, plantas de cobertura do solo, estado nutricional, análise multivariada.

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“…miR393 targets the transport inhibitor response 1 gene ( TIR1 ) (Table 3 and 4), required for normal response to auxin, essential for many important biological process in plants [43, 44], including root development [45]. One of the first symptom of Al 3+ toxicity in plants is the reduction of lateral roots formation [46, 47]. Rice super expressing miRNA393a and miRNA393b shows a significant reduction in the lateral roots formation [48].…”

Section: Discussionmentioning

confidence: 99%

Microtranscriptome of contrasting sugarcane cultivars in response to aluminum stress

Gonçalves

Mateus-Rosa

et al. 2019

Preprint

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20 Although metallic elements are required for plant growth, aluminum ions (Al +3 ) can be 21 considered one of the major abiotic factors affecting productivity. In plants, the presence of 22 Al +3 can result in inhibition of root growth triggering water and nutrient deficiency. Plants 23 under stress conditions undergo gene expression changes in specific genes or post-24 transcriptional gene regulators as miRNAs that can led to resistance. In this study, we 25 investigated the miRNAs involved in the sugarcane response to aluminum stress. Four 26 miRNA libraries were generated using sugarcane roots of two contrasting (tolerant and 27 sensitive) sugarcane cultivars growing under aluminum stress to identify the miRNAs 28 involved in the sugarcane response. Here we present the first miRNAs sequencing of 29 sugarcane response under aluminum stress. The contrast of the cultivars seen in the field was 30 reflected in the micro transcriptome with opposing expression profile. We selected 394 31 differentially expressed miRNAs, in both cultivars, 22% were common between cultivars.32 Real time quantitative polymerase chain reaction was used to validate the differentially 33 expressed miRNAs through high-throughput sequencing in sugarcane roots. Target genes 34 prediction was also analyzed. Our results indicated miRNAs that modulated specific target 35 genes involved in roots development and plant aluminum stress response. Those genes can 36 be the answer to tolerance in sugarcane and used in breeding programs to develop tolerant 37 cultivars. 38 39 Introduction 40 Sugarcane (Saccharum spp.) as an important source of sugar and ethanol became the 41 third most produced commodities in the world (1.4G). In this context, Brazil figure as a 42 major sugarcane producer (500M tons) followed by India (300M), China and Thailand [1].3 43 The projections, based on the worldwide increasing demand for food and energy, are that 44 sugarcane global production will increase by 21% until 2024. Production can be increased 45 by increasing productivity and cropland expansion. The sugarcane crop expansion is evident 46 in Brazil, where nowadays more than 9.5 million ha are used to cultivate sugarcane, but the 47 demand for sugar and ethanol will increase to 10.5 million ha by the years 2023/24 [2]. 48Among the main factors that can affect agricultural productivity, soil has 49 fundamental importance since it offers not only physical support but also water and the 50 necessary nutrients for plant growth. Aluminum (Al) together with silicon and oxygen are 51 the three most abundant elements in earth crust. Although metallic elements are required for 52 plant growth, aluminum ions (Al +3 ) can be considered one of the major abiotic factors 53 affecting agriculture productivity [3]. Al is a nonessential element naturally found in the 54 soil but it is toxic and its bioavailability is highest on acidic soils (pH of 5.5 or lower), 55 resulting in inhibition of root growth, architecture alteration and elongation disruption [3].56 Around the world 50%...

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Tolerância ao alumínio em porta-enxertos somaclonais de macieira cultivados em solução nutritiva

Cited by 9 publications

References 16 publications

Effects of aluminum on plant growth and nutrient uptake in young physic nut plants

Effects of aluminum on plant growth and nutrient uptake in young physic nut plants

Dissimilaridade de porta-enxertos da laranjeira 'folha murcha' sob dois sistemas de manejo de cobertura permanente do solo

Microtranscriptome of contrasting sugarcane cultivars in response to aluminum stress

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