The role of magnesium in plant disease

Huber, D. M.; Jones, J. B.

doi:10.1007/s11104-012-1476-0

Cited by 164 publications

(113 citation statements)

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“…Magnesium (Mg) is involved in many physiological and biochemical processes; it is an essential element for plant growth and development and plays a key role in plant defence mechanisms in abiotic stress situations (Cakmak and Kirkby 2008;Cakmak and Yazici 2010;Cakmak 2013;Gransee and Führs 2013;Huber and Jones 2013;Mengutay et al 2013). The most commonly known function of Mg in plants is probably its role as the central atom of the chlorophyll molecule in the light-absorbing complex of chloroplasts and its contribution to photosynthetic fixation of carbon dioxide (Cakmak and Kirkby 2008;Cakmak and Yazici 2010;Gerendás and Führs 2013).…”

Section: Introductionmentioning

confidence: 99%

Role of magnesium fertilisers in agriculture: plant–soil continuum

et al. 2015

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Abstract. In this review, we summarise factors contributing to plant availability of magnesium (Mg) in soils, the role of Mg in plant physiological processes related to yield formation and abiotic stress tolerance, and soil and fertiliser parameters related to Mg leaching in fertilised soils. Mg is a common constituent in many minerals, comprising 2% of Earth's crust; however, most soil Mg (90-98%) is incorporated in the crystal lattice structure of minerals and thus not directly available for plant uptake. Plants absorb Mg from the soil solution, which is slowly replenished by soil reserves. Duration and intensity of weathering, soil moisture, soil pH, and root-microbial activity in soil are key factors that determine plant-available Mg release from soils. On the other hand, the amount of Mg released from soil minerals is generally small compared with the amounts needed to sustain high crop yield and quality. Thus, in many agro-ecosystems, application of Mg fertilisers is crucial. Magnesium is involved in many physiological and biochemical processes; it is an essential element for plant growth and development and plays a key role in plant defence mechanisms in abiotic stress situations. An early effect of Mg deficiency in plants is the disturbed partitioning of assimilates between roots and shoots because the supply of sink organs with photosynthetic products is impaired, and sugars accumulate in source leaves. Thus, optimal supply of Mg is required to improve crop tolerance to various stresses and to increase yield and quality parameters of harvested products. Unlike other cations, Mg is very mobile in soils because it is less bound to the soil charges. Therefore, Mg losses by leaching might occur in sandy soils with high water conductivity. Leaching of Mg in soils when applied with various water-soluble fertilisers may also vary depending on the fertiliser's chemical composition, granule size, and effect on soil pH and cation balance, as we discuss in detail.

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Section: Introductionmentioning

confidence: 99%

Role of magnesium fertilisers in agriculture: plant–soil continuum

et al. 2015

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“…As magnesium is part of the structure of chlorophyll molecule (Marschner, 2012), Mg-deficient plants are more susceptible to disease (Huber and Jones, 2013).…”

Section: Discussionmentioning

confidence: 99%

Interaction between potassium (K) and calcium (Ca) on the severity of Yellow Sigatoka in banana plants

Freitas¹,

Pozza²,

Pozza³

et al. 2017

Afr. J. Agric. Res.

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The main control measure of Yellow Sigatoka (Pseudocercospora musae) in banana plants (Musa spp.) has been the planting of resistant varieties, and fungicide application. However, the use of adequately nourished plants is also emphasized as a complementary control method. This study evaluated the influence of interaction between potassium (K) and calcium (Ca) in nutrient solution on the severity of Yellow Sigatoka in banana. Evaluation included severity of disease, chlorophyll a and b contents, nutrient contents, and total dry weight (TDW). There was no interaction between concentrations of K and Ca for area under the disease severity progress curve (AUDSPC), although the AUDSPC increased in leaves 1 and 2 with increasing concentrations of K from 1 to 6 mmol L -1 . Increasing K led to a reduction in chlorophyll a and b contents, and in nutrients N, P, Mg, B, Cu, Zn, and Mn. TDW increased with increasing K. Therefore, high concentration of K causes nutritional imbalance in banana plants, and favors the severity of Yellow Sigatoka.

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“…The type of nutrition of plants infected by viruses has been shown to have a marked effect on the expression of symptoms produced by these pathogens (Amtmann et al, 2008;Dordas, 2008;Huber and Jones, 2013). In the specific case of the TSWV, a certain relationship has been found between the content of microelements and the tolerance El tipo de nutrición de las plantas infectadas por los virus ha demostrado tener un efecto marcado en la expresión de síntomas producidos por estos patógenos (Amtmann et al, 2008;Dordas, 2008;Huber y Jones, 2013).…”

Section: Introductionmentioning

confidence: 99%

Hierro foliar y acolchado plástico en Capsicum chinense Jacq. infectado con tospovirus

Bojórquez

Maza

Contreras

et al. 2017

Remexca

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ResumenDe las enfermedades que afectan mayormente al chile habanero se encuentran las provocadas por tospovirus, los cuales pueden reducir completamente su rendimiento. Durante el año 2013, se realizó un experimento con dos variedades de chile habanero (una infectada y otra no infectada con tospovirus), con el objetivo de evaluar la aplicación de hierro en forma foliar y el acolchado plástico sobre el rendimiento, índice SPAD y NO3 -en el extracto celular del peciolo (ECP). Los tratamientos se distribuyeron bajo un diseño factorial 2 * 2 * 4 (dos variedades, una infectada con tospovirus y otra sana; con o sin aplicación de hierro foliar, y cuatro colores de acolchado plástico). Los resultados obtenidos mostraron que la infección de la variedad y la aplicación de hierro foliar no afectaron el rendimiento (p˃ 0.05); sin embargo, el color de acolchado plástico si lo modificó significativamente (p< 0.05), incrementándose al utilizar el acolchado trasparente y plateado. El índice SPAD en las hojas fue afectado significativamente (p< 0.05) al inicio del experimento por los tratamientos variedades y aplicación de hierro foliar, mientras que a los 90 días después del trasplante fue afectado por el acolchado, las AbstractOf the diseases that affect mainly the habanero pepper are those caused by tospoviruses, which can completely reduce its yield. During the year 2013, an experiment was carried out with two varieties of habanero pepper (one infected and one not infected with tospoviruses), with the objective of evaluating the application of iron in foliar form and the plastic padding on the performance, index SPAD and NO3 -in the petiole cell extract (ECP). The treatments were distributed under a factorial design 2 * 2 * 4 (two varieties, one infected with tospoviruses and another healthy, with or without application of foliar iron, and four colors of plastic mulch). The results showed that the infection of the variety and the application of foliar iron did not affect yield (p˃ 0.05); however, the color of plastic mulch is significantly modified (p< 0.05), increasing when using transparent and silver mulch. The SPAD index in the leaves was significantly affected (p< 0.05) at the beginning of the experiment by treatments varieties and application of foliar iron, whereas at 90 days after the transplant was affected by the quilting, varieties and application of iron (p< 0.005), as well as the interaction between padding and iron application (p< 370 et al. variedades y la aplicación de hierro (p< 0.005), igual que la interacción entre el acolchado y la aplicación de hierro (p< 0.02). Por otro lado, las concentraciones de NO3 -en el ECP resultaron afectadas durante la mayor parte del tiempo en el experimento. Las mayores concentraciones de NO3 -se presentaron en las plantas desarrolladas en acolchado plástico y en las que no recibieron aplicación de hierro foliar.Rev. Mex. Cienc. Agríc. Vol.8 Núm. 2 15 de febrero -31 de diciembre, 2017 Ariana Isabel Torres BojórquezPalabras clave: clorofila, chile habanero, enfermedades, ni...

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The role of magnesium in plant disease

Cited by 164 publications

References 64 publications

Role of magnesium fertilisers in agriculture: plant–soil continuum

Role of magnesium fertilisers in agriculture: plant–soil continuum

Interaction between potassium (K) and calcium (Ca) on the severity of Yellow Sigatoka in banana plants

Hierro foliar y acolchado plástico en Capsicum chinense Jacq. infectado con tospovirus

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