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Brown, Patrick H.; Shelp, Barry J.

doi:10.1023/a:1004211925160

Cited by 397 publications

(81 citation statements)

References 54 publications

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“…Perhaps uniquely among the essential plant nutrients, B has restricted mobility in the majority of plant species while being freely mobile in the phloem of some species (Brown and Shelp 1997). The ability to re-translocate B from older tissues to young leaves enables some plant species to avoid deficiency when external B supply is low.…”

Section: B Translocation and Utilizationmentioning

confidence: 99%

Physiological and genetic responses to boron deficiency inBrassica napus: A review

Zhang

Zhao

Shi

et al. 2014

Soil Science and Plant Nutrition

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Boron (B) is an essential microelement for the growth and development of plants, and B deficiency affects many biochemical and physiological processes. Brassica napus L. has a high demand for B and is extremely sensitive to B deficiency. Seed yields and oil quality of B. napus are often limited by the low availability of B in soils. Developing new cultivars of B. napus with high B efficiency is therefore required, which requires a greater understanding of responses to B deficiency. Significant genotypic differences in response to low soil B have been observed among varieties of B. napus. B-efficient genotypes can grow and yield normally and usually have a larger root system than B-inefficient genotypes at low B conditions. The mechanisms for B efficiency in B. napus are attributed to B absorption, transportation and utilization. In addition, the cell wall component plays an important role in the tolerance of B. napus to B deficiency, and the B-efficient line presents fewer B-binding sites in the cell walls compared with the B-inefficient line. Genetic and proteomic analyses in B. napus revealed the modulation of a complex network in response to B deficiency. This review gives a comparative overview of the physiological and genetic responses to B deficiency in B. napus and discusses the possible underlying mechanisms of B efficiency.

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Section: B Translocation and Utilizationmentioning

confidence: 99%

Physiological and genetic responses to boron deficiency inBrassica napus: A review

Zhang

Zhao

Shi

et al. 2014

Soil Science and Plant Nutrition

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“…Mas em certas espécies, como as da família das Rosaceae (pomóideas e prunóideas), que utilizam o dulcitol, sorbitol ou manitol (todos eles dióis) no transporte do B no floema (Brown e Shelp, 1997), a sua mobilidade é maior. Nas outras espécies, a reduzida mobilidade pode induzir escassez em certos órgãos, em particular quando a taxa de transpiração é baixa, nomeadamente ao abrolhamento dos ápices vegetativos, e também nos órgãos reprodutores.…”

Section: Factores Genéticosunclassified

“…Nestes casos, a adubação foliar pode não ter os efeitos esperados, sendo mais aconselhável uma pulverização centrada nos órgãos florais, como sugeriram Wells et al (2008) na pecana. Nas espécies onde o B dispõe de mobilidade no floema é possível obter uma reacção muito positiva à aplicação foliar comparativamente a espécies de outras famílias; porém, quando a mobilidade do B é reduzida a aplicação do nutriente ao solo produz resultados mais eficazes (Brown e Shelp, 1997). Todavia, nos solos de textura fina e pH alcalino a adubação foliar pode revelar-se mais apropriada do que a aplicação ao solo (Mengel, 2002), porque nestas condições as espécies B(OH) 3 /B(OH) 4 -são mais fortemente adsorvidas nos minerais argilosos, sob pena de haver necessidade de adubações mais abundantes.…”

Section: Efeito Da Adubação Boratada Na Produtividade Das Culturasunclassified

“…notaram Brown e Shelp (1997), em várias fruteiras a floração precede a absorção de nutrientes pela raiz, portanto o fornecimento de B às zonas florais provém dos órgãos de reserva. Estes autores recomendam mesmo, nas fruteiras onde o B tem maior mobilidade, a pulverização da copa no fim do ciclo vegetativo, quando as plantas ainda estão fotossinteticamente activas.…”

Section: Efeito Da Adubação Boratada Na Produtividade Das Culturasunclassified

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Carências de boro no interior - norte e centro - de Portugal

Portela¹,

Vale²,

Abreu

2015

Rev. Ciênc. Agr.

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R E S U M OEm Portugal, a deficiência de boro tem sido observada em quase todo o território, particularmente no interior, causando prejuízos assinaláveis nas culturas. Foi reconhecida pela primeira vez na década de 50 do séc. XX, nas vinhas do Douro (designada de 'maromba'). Desde os anos 80 vêm sendo realizados estudos sistemáticos no interior norte/centro do país para identificação e correcção desta carência em fruteiras e espécies florestais/agroflorestais. Neste trabalho de revisão faz-se uma inventariação das formações geológicas/litológicas onde mais amiúde se têm detectado as carências de boro, bem como as unidades pedológicas onde elas já foram identificadas. Enunciam-se os condicionalismos de ordem ambiental que mais potenciam o seu aparecimento. Com base em estudos efectuados nestas regiões, indica-se para algumas arbóreas a sintomatologia da deficiência e as concentrações de boro, nos solos e nas folhas, para as quais se observaram esses sintomas. Também se apresentam resultados experimentais da aplicação de boro em termos de crescimentos e de produtividade das culturas. Por último, procuraram-se explicações para perplexidades suscitadas pelas reacções das plantas aos estados de carência, ou aquando da aplicação de boro, desde o aparecimento da 'maromba' no séc. XIX até aos dias de hoje. Finaliza-se com recomendações de estratégias para corrigir a carência deste micronutriente.Palavras-chave: boro extraível, concentração foliar de boro, nível crítico no solo, sintomas de carência de boro. A B S T R A C TIn Portugal, boron deficiency has been observed almost everywhere, in particular in the interior of the country, causing severe crop damage. In the 1950's, the growth anomalies in the Douro vineyards were recognised as a boron deficiency (called ´maromba'). From the 1980's onwards systematic studies have been carried out in the northern and central interior of Portugal with the purpose of identifying and correcting this deficiency in fruit trees and forest/agroforest species. In this review paper an inventory of geological/lithological formations and soil groups is carried out where the boron shortage was most often detected. The environmental conditions that enhanced the occurrence of boron deficiency were reviewed. Based on studies carried out in these regions, the deficiency symptoms of selected trees were described, and also the boron concentrations in soils and leaves in which the symptoms had been observed were recorded. Experimental results of boron fertilisation in terms of growth or yield increase of crops were presented. Finally, an attempt is made to explain perplexities arisen from unexpected plant reactions, either due to the deficiency or to boron application, since the emergence of ´maromba' in the 19 th century until the present. In addition, some strategies for correction of scarcity of this micronutrient are suggested.

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“…This complex is industrially formed by a proprietary reaction of boric acid with fructose and calcium carbonate. Natural and identical fructoborate esters are found in some fruits and vegetables (Matsunaga & Nagata, 1995;Brown & Shelp, 1997;Hu, Penn, Lebrilla & Brown, 1997). Numerous studies (Brown & Hu, 1994;Kobayashi, Matoh & Azuma, 1996;Brown et al, 2002) have shown that borates are critical in plant growth processes such as normal growth of cell wall, membrane function, and lignin biosynthesis, and are also important to human health ( I.…”

Section: Introductionmentioning

confidence: 99%

Identification and Quantification of Fructoborate Ester Complex Using Liquid Chromatography Coupled with Q Exactive Orbitrap Mass Spectrometry

Xia

Chang

Hunter

et al. 2017

JFR

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The identification of fructoborate complex in food matrices using liquid chromatography coupled with quadrupole Orbitrap mass spectrometry was investigated in this study. The LC/MS method was established by optimization of mobile phases and direct infusion of FruiteX-B ® brand calcium fructoborate (CaFB) solution to Q Exactive Orbitrap mass spectrometer to obtain MS operation parameters. The precursor ion m/z 367.10522 was dissociated further for conformation analysis of fructoborate complex. The method was applied to identify and quantify fructoborate in freeze dried apricot fruit and raisins. It was found that fructose-11 B-fructose di-ester complex was present in these fruits. The results were further verified by multinuclear solid and liquid states NMR spectroscopy analysis.

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Untitled

Cited by 397 publications

References 54 publications

Physiological and genetic responses to boron deficiency inBrassica napus: A review

Physiological and genetic responses to boron deficiency inBrassica napus: A review

Carências de boro no interior - norte e centro - de Portugal

Identification and Quantification of Fructoborate Ester Complex Using Liquid Chromatography Coupled with Q Exactive Orbitrap Mass Spectrometry

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