A study of the intervarietal differences of cotyledon and seed coat carbohydrates in soybeans

Mullin, W.J.; Xu, Wentao

doi:10.1016/s0963-9969(00)00118-6

Cited by 15 publications

(15 citation statements)

References 20 publications

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“…For example, the soybean seed coat itself is typical of legumes (Corner 1951;Esau 1977;Qutob et al 2008), and consists of an outermost layer of closely packed macrosclereids (palisade cells), subtended by a layer of thick-walled hour-glass cells, crushed parenchyma and an intact aleurone layer. Each of these, but the palisade layer in particular, has been implicated in contributing to seed coat permeability; for example, tight packing between palisade cells (Corner 1951;Ballard 1973), thickness of the outer tangential walls of palisade cells (Werker et al 1979) the presence of a prominent light line in the palisade cells (Bhalla and Slattery 1984;Harris 1987;Serrato-Valenti et al 1993), and the carbohydrate composition of the cell walls of seed coat cells (Mullin and Xu 2000, 2003 have all been proposed as explanations for non-permeability in stone seeds. In addition, two thin (\0.2 lm) and inconspicuous cuticles are found in soybean seed coats: one covering the outer surface of the palisade layer and the other between the crushed parenchyma and endosperm (Chamberlin et al 1994;Ma et al 2004;Qutob et al 2008).…”

Section: Discussionmentioning

confidence: 99%

Properties of the soybean seed coat cuticle change during development

Ranathunge

Shao

Qutob

et al. 2010

Planta

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Whether a seed coat of a soybean (Glycine max L. Mer.) seed is permeable or non-permeable is governed by a number of quantitative trait loci further influenced by environmental factors. In soybean seeds, water loss is controlled by a thin, inconspicuous outer cuticle. When intact, the outer cuticle constitutes a barrier to water passage; however, the presence of minute cracks in the cuticle results in the ready passage of water. We explored the timing of cuticular development in soybean seeds by measuring the deposition of the cutin in relation to seed growth and cell viability. Cutin deposition occurred early in the development and ceased just prior to the final stage of rapid seed expansion. Cracks in the cuticle appeared after cutin synthesis ceased while the seed continued to grow. In permeable seeds (regardless of genotype) the resistance of the cuticle to water passage increased steadily during development until seed expansion was maximal and cracks appeared in the cuticle. Once cracks formed, they became the primary site of water passage and the cuticle lost its ability to control the process. In non-permeable seeds, no cracks appeared at this critical point and the cuticle continued to restrict water passage. Microarray analysis of gene expression during seed coat development revealed a complex transcriptome with many genes uniquely expressed in the seed coat. However, the expression patterns were remarkably similar between permeable and non-permeable types, in keeping with the complexity of the underlying genetics of seed coat permeability.

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Section: Discussionmentioning

confidence: 99%

Properties of the soybean seed coat cuticle change during development

Ranathunge

Shao

Qutob

et al. 2010

Planta

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“…As an abundance of cytoplasmic protein bodies have been visualised in marama seeds, possibly containing the majority of the protein associated mannose, the mannose detected in the sugar composition analysis of the non-cellulosic monosaccharides in AIR should not be considered part of the cell wall (Mosele et al, 2011). High mannose content has previously been reported in legume seeds with no evidence for its origin (Mullin and Xu, 2000).…”

Section: Alcohol Insoluble Residue (Air)mentioning

confidence: 94%

Characterisation of the arabinose-rich carbohydrate composition of immature and mature marama beans (Tylosema esculentum)

et al. 2011

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“…Independentemente da metodologia utilizada, a galactose, a glicose, a arabinose e os ácidos urônicos são os principais componentes encontrados em polissacarídeos de parede celular de cotilédones de soja, enquanto que a xilose, a ramnose e a fucose são componentes encontrados em menores quantidades. Os polissacarídeos geralmente são avaliados quanto aos teores de monossacarídeos e ácidos urônicos, os quais indicam a presença das frações, ou ainda, são determinados como fibras alimentares totais, solúveis e insolúveis, para posteriormente serem hidrolisados e, então, são avaliados os monossacarídeos (BRILLOUET; CARRÉ, 1983;HUISMAN;SCHOLS;VORAGEN, 1998;MULLIN;XU, 2000;OUHIDA;PÉREZ;GASA, 2002;STOMBAUGH et al, 2000).…”

Section: Carboidratosunclassified

Carboidratos das fibras de cotilédones e proteínas de produtos derivados de soja (Glycine max (L.) Merril)

Seibel¹,

Beléia²

2008

Ciênc. Tecnol. Aliment.

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A fibra de soja, ou fração insolúvel do processamento de concentrado protéico, é separada por centrifugação e contém principalmente carboidratos de parede celular dos cotilédones da soja, sem componentes da casca. É um produto que necessita de caracterização para posterior utilização. Fibras alimentares são macromoléculas resistentes à digestão pelas enzimas do trato gastrointestinal humano e são essencialmente compostas de componentes de parede celular, principalmente pectina, lignina, hemicelulose e celulose, que têm tido importância devido aos efeitos benéficos à saúde humana, como regulação do trânsito intestinal e prevenção de algumas doenças, incluindo o câncer (THARANATHAN;MAHADEVAMMA, 2003). No entanto, é necessário o conhecimento da constituição destas frações, isto é possível com o fracionamento da parede celular, que promove uma separação dos polissacarídeos, podendo então ser identificados os seus constituintes.A pectina é rica em ramnose, arabinose, galactose e áci-dos galacturônicos, (ligados ionicamente a Ca ++ e Mg ++ ), esta fração é covalentemente ligada a fenóis, proteínas e celulose, em todos os tipos de parede celular. Ligninas são compostos polifenólicos altamente insolúveis formados pela polimerização de três álcoois: álcool trans-p-cumaril, álcool-coniferil e álcool trans-sinapil, que mantêm uma extensa rede de ligações cruzadas na parede celular, conferindo-lhes elevada resistên-cia, pois substituem moléculas de água entre os polímeros (BRETT; WALDRON, 1996). A hemicelulose corresponde a um grupo heterogêneo de polissacarídeos ramificados que se ligam firmemente à superfície das microfibrilas de celulose e entre si, cobrindo as microfibrilas e mantendo ligações cruzadas, via ligações de hidrogênio em uma rede complexa. A celulose é constituída exclusivamente de glicose que forma cadeias por ligações β 1-4, e de ligações de hidrogênio entre as cadeias, com AbstractDietary fibers from soybean cotyledons classified as original (ODF) and milled (MDF) were fractionated and evaluated as to fractions and monosaccharide composition. The major constituent was hemicellulose, 59% in ODF and 51% MDF, pectin was in average 14% and cellulose, 8.5%. Both samples had 17 mg.g -1 uronic acids and the same composition in monosaccharides: galactose, glucose and arabinose/rhamnose, after hydrolysis. Protein fractions extracted from protein concentrate, defatted flour and dietary fibers were evaluated for protein solubility in different solvents (NaCl, water, ethanol and NaOH) and for molecular weight. Defatted flour had the highest concentration of proteins soluble in saline solution, while protein concentrate and dietary fibers had the highest protein solubility in alkaline solution. Residual protein, not extracted with any of the solvents used, remained in the insoluble fraction and the highest concentration was in the protein concentrate, followed by MDF, defatted flour and ODF. Protein electrophoresis of the four food ingredients showed subunits that constitute the fractions β-conglycinin and glycinin. P...

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A study of the intervarietal differences of cotyledon and seed coat carbohydrates in soybeans

Cited by 15 publications

References 20 publications

Properties of the soybean seed coat cuticle change during development

Properties of the soybean seed coat cuticle change during development

Characterisation of the arabinose-rich carbohydrate composition of immature and mature marama beans (Tylosema esculentum)

Carboidratos das fibras de cotilédones e proteínas de produtos derivados de soja (Glycine max (L.) Merril)

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