Effects of Nutrient Stress on Susceptibility of Plants to Disease with Particular Reference to the Trace Elements

Graham, Robin D.

doi:10.1016/s0065-2296(08)60261-x

Cited by 186 publications

(129 citation statements)

References 119 publications

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“…In this case, the seedlings might not have developed a strong enough defence system to withstand Ganoderma. Secondly, the present study used basic fertilizer NPKMg 14:10:10:2 whereas, Nur Sabrina et al (2012) used NPK 15:6:4, i.e., with high N, low P and very low K. According to Graham (1983), excess N may encourage fungal pathogens, especially if P or K is low. Since a high N-and low Kfertilizer has been shown to increase Ganoderma incidence and severity as opposed to a low N-and high K-fertilizer (Mohd Tayeb et al, 2003), fertilizer used in this study may have contributed to the reduction of Ganoderma incidence and severity to mask the beneficial effects of micronutrients in this study.…”

Section: Area Under Disease Progress Curve Disease Reduction and Epimentioning

confidence: 81%

“…Specific mechanisms employed by Cu to reduce plant diseases include direct toxicity to pathogens (Huber, 1989;Evans et al, 2007) and enhancement of plant resistance to disease as a regulator or a cofactor of many enzymes involved in plant defence (Graham, 1983;Graham and Webb, 1991). The effect of Cu on pathogen virulence might be the most important mechanism to scrutinise in the present study.…”

Section: Percentage Of Infected Bulb Tissues and Disease Severity Indmentioning

confidence: 99%

“…The oxidation of soluble phenols into oxidized forms toxic to fungi and involved in plant defence is under the control of Mn-containing enzymes (Graham, 1983). The enhancement of plant resistance indirectly through root exudates to modify the root environment, or the modification of important metabolic constituents required for pathogenic activity is also reported (Thompson and Huber, 2007).…”

Section: Percentage Of Infected Bulb Tissues and Disease Severity Indmentioning

confidence: 99%

“…Boron (Stangoulis and Graham, 2007), Cu (Evans et al, 2007) and Mn (Thompson and Huber, 2007) are reported to control many plant diseases. Copper, B and Mn are all intimately involved in phenol synthesis in plants and have major effects on host susceptibility to disease (Graham, 1983). This study was initiated to see whether incorporation of single and combined optimum concentrations of these micronutrients in a commonly used compound fertilizer grade NPKMg (14:10:10:2), can reduce BSR incidence and severity on oil palm seedlings.…”

Section: Introductionmentioning

confidence: 99%

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EFFECT OF MICRONUTRIENTS-ENRICHED FERTILIZERS ON BASAL STEM ROT DISEASE INCIDENCE AND SEVERITY ON OIL PALM (<i>ELAEIS GUINEENSIS</i> JACQ.) SEEDLINGS

Hanafi¹,

Idris²,

Kadir³

et al. 2014

American Journal of Applied Sciences

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Section: Area Under Disease Progress Curve Disease Reduction and Epimentioning

confidence: 81%

Section: Percentage Of Infected Bulb Tissues and Disease Severity Indmentioning

confidence: 99%

Section: Percentage Of Infected Bulb Tissues and Disease Severity Indmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

EFFECT OF MICRONUTRIENTS-ENRICHED FERTILIZERS ON BASAL STEM ROT DISEASE INCIDENCE AND SEVERITY ON OIL PALM (<i>ELAEIS GUINEENSIS</i> JACQ.) SEEDLINGS

Hanafi¹,

Idris²,

Kadir³

et al. 2014

American Journal of Applied Sciences

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“…É importante ressaltar que os teores de Mn encontrados nas folhas, nas maiores doses, aproximaram-se, e até ultrapassaram valores de macronutrientes como o P e o S. Observam-se, também, teores de manganês mais elevados no sistema radicular das mudas, em relação aos demais órgãos (Tabela 1), o que pode indicar algum mecanismo de defesa da planta ao excesso de Mn presente na solução nutritiva, não permitindo da planta, associados à via do ácido chiquímico, incluindo aminoácidos aromáticos fenólicos, ligninas e flavonoides (BURNELL, 1988). Concentrações mais baixas desses compostos foram detectadas em tecidos deficientes em Mn de diversos vegetais, o que pode ser a causa da maior suscetibilidade a doenças das plantas carentes nesse nutriente (GRAHAM, 1983;MALAVOLTA, 2006). Outro fator a ser considerado é a participação do manganês na síntese da lignina, que enrijece os tecidos, aumentando a barreira física à entrada de patógenos (MALAVOLTA et al, 1997).…”

Section: Resultsunclassified

Influência do manganês no crescimento e na composição mineral de mudas de caramboleira

Hernandes

Natale²,

Cazetta³

et al. 2010

Rev. Bras. Frutic.

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RESUMO -A carambola apresenta boas perspectivas de comercialização, devido ao crescente aumento na demanda por frutas, tanto no mercado interno como no externo, sendo uma opção promissora de cultivo. Porém, as principais áreas de produção de carambola estão localizadas em regiões caracterizadas por solos ácidos, com baixa saturação por bases e, frequentemente, possuem alumínio e manganês em quantidades suficientemente altas para limitar o desenvolvimento normal dos vegetais em geral. O objetivo deste trabalho foi avaliar os efeitos do manganês no crescimento e na composição química da caramboleira, assim como na massa seca das plantas. O delineamento experimental adotado foi o de blocos casualizados, constituídos de 4 doses de Mn (0; 0,5; 25 e 50 mg L -1 de Mn), 4 épocas de coleta (30; 60; 90 e 120 dias após o emprego das doses de Mn) e 3 repetições, em mudas conduzidas em solução nutritiva. Foram avaliados tanto aspectos biológicos como nutricionais das mudas de caramboleira, a fim de identificar a dose mais adequada de Mn e seus efeitos no crescimento dessa frutífera. As doses de Mn e as épocas de coleta influenciaram nos teores e no acúmulo de Mn, assim como a massa seca, em função do órgão analisado. Ocorreu aumento linear nos teores e acúmulos de Mn com o incremento das doses de manganês em todas as estruturas. Houve aumento na eficiência de absorção de Mn com o incremento das doses, entretanto diminuição na eficiência de transporte e utilização do Mn. Os parâmetros biológicos avaliados apresentaram as maiores médias na concentração de 0,5 mg L -1 de Mn. Termos para indexação: Averrhoa carambola, frutífera, micronutriente, Mn. INFLUENCE OF MANGANESE ON GROWTH AND IN THE MINERAL COMPOSITION OF STAR FRUIT TREE SEEDLINGSABSTRACT -The star fruit presents good prospects of commercialization, due to the increasing demand for fruit, both in internal and external markets, being a promising option of cultivation. However, the main areas of star fruit production are located in regions characterized by acid soils, with low base saturation and often have aluminum and manganese in quantities high enough to limit the normal development of plants in general. The objective of this work was to evaluate the effects of manganese on growth and in the chemical composition of star fruit tree, as well as the dry mass of plants. The experimental design was a randomized block, consisted of 4 levels of Mn (0, 0.5, 25 and 50 mg Mn L -1 ), 4 times of collection (30, 60, 90 and 120 days of placement of the levels of Mn) and 3 replications, on seedlings conducted in nutrient solution.Biological and nutritional aspects of star fruit seedlings to identify the most appropriate level of Mn and its effects on growth of this fruit tree were evaluated. The levels of Mn and times of collection influenced the contents and the accumulation of Mn, as well as the dry mass depending of the organ examined. There was a linear increase in the levels and accumulation of Mn as a function of increasing levels of manganese in all structures. There was an i...

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Zinc in Soils and Crop Nutrition

Sadeghzadeh¹,

Rengel

2011

The Molecular and Physiological Basis of Nutrient Use Efficiency in Crops

143

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Zinc (Zn) is an essential micronutrient and has particular physiological functions in all living systems, such as the maintenance of structural and functional integrity of biological membranes and facilitation of protein synthesis and gene expression. Among all metals, Zn is needed by the largest number of proteins. Zinc-binding proteins make up nearly 10 % of the proteomes in eukaryotic cells, and 36% of the eukaryotic Zn-proteins are involved in gene expression (Andreini et al., 2006, J. Proteome Res. 5: 3173-3178). Tolerance to environmental stress conditions has a high requirement for Zn to regulate and maintain the expression of genes needed to protect cells from the detrimental effects of stress

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Effects of Nutrient Stress on Susceptibility of Plants to Disease with Particular Reference to the Trace Elements

Cited by 186 publications

References 119 publications

EFFECT OF MICRONUTRIENTS-ENRICHED FERTILIZERS ON BASAL STEM ROT DISEASE INCIDENCE AND SEVERITY ON OIL PALM (<i>ELAEIS GUINEENSIS</i> JACQ.) SEEDLINGS

EFFECT OF MICRONUTRIENTS-ENRICHED FERTILIZERS ON BASAL STEM ROT DISEASE INCIDENCE AND SEVERITY ON OIL PALM (<i>ELAEIS GUINEENSIS</i> JACQ.) SEEDLINGS

Influência do manganês no crescimento e na composição mineral de mudas de caramboleira

Zinc in Soils and Crop Nutrition

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