Changes in glucosinolates during crop development in single‐ and double‐low genotypes of winter oilseed rape (Brassica napus): I. Production and distribution in vegetative tissues and developing pods during development and potential role in the recycling of sulphur within the crop

Fieldsend, J. K.; Milford, G. F. J.

doi:10.1111/j.1744-7348.1994.tb04157.x

Cited by 70 publications

(60 citation statements)

References 14 publications

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“…napus seeds, the content of the GSLs, mainly aliphatic type, decreases dramatically (Fieldsend and Milfor, 1994). However, change of progoitrin content (5.59-45.4%) as the predominating aliphatic GSLs during seedling period showed opposite trends with other aliphatic GSLs in our study.…”

Section: Gsl (Gluconasturtiin)contrasting

confidence: 70%

Variation of Glucosinolate Composition during Seedling and Growth Stages of Brassica rapa L. ssp. pekinensis

Hong¹,

Kim²

2014

HST

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The objective of this study was to evaluate glucosinolate (GSL) profiles and variation of total and individual GSLs concentrations within seedling (0-14 days) and growth stages (0-15 weeks) of Korean Chinese cabbage (Brassica rapa L. ssp. pekinensis). Ten GSLs (progoitrin, glucoraphanin, glucoalyssin, gluconapin, glucobrassicanapin, 4-hydroxyglucobrassin, glucobrassicin, 4-methoxyglucobrassicin, neoglucobrassicin and gluconasturtiin) were identified from Korean Chinese cabbage. In general, total GSL content significantly decreased during seedling (from 92.89 to 35.26 μmol･g -1 DW) and growth stages (from 74.11 to 1.97 μmol･g -1 DW). Gluconapin was the highest in seeds and in the germination period (73.1 μmol･g -1 DW) and declined gradually from 73 to 15% during seedling stages. The level of the major aliphatic GSLs, gluconapin and progoitrin, tended to decrease sharply, whereas levels of indolic GSLs (4-methoxyglucobrassicin, glucobrassicin) and aromatic GSLs (gluconasturtiin) were found to increase generally at the beginning of growth stages.

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Section: Gsl (Gluconasturtiin)contrasting

confidence: 70%

Variation of Glucosinolate Composition during Seedling and Growth Stages of Brassica rapa L. ssp. pekinensis

Hong¹,

Kim²

2014

HST

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“…In leaves the glucosinolate content is high in young developing tissues, reaching a maximum at full leaf expansion and then declining (Porter et al, 1991). This turnover and metabolism of glucosinolates (via pathways yet to be established), points to a potential storage role for the compounds, though in rape the vegetative tissue glucosinoiates do not seem to provide a significant proportion of the glucosinolate sulphur later found in seeds (Fieldsend & Milford, 19946). In addition, a great many studies have found that glucosinolate accumulation can be 'induced' by a variety of factors, such as insect attack (Lammerink, MacGibbon & Wallace, 1984;Koritsas, Lewis & Fenwick, 1989;Birch, Griffiths & Smith, 1990), mechanical damage (Bodnaryk, 1992) and fungal infection (Doughty et al, 1991).…”

Section: Dei'elopmental and Induced Changes In Glucosinolate Contentmentioning

confidence: 99%

Secondary metabolites in plant defence mechanisms

1994

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SUMMARY Many secondary metabolites found in plants have a role in defence against herbivores, pests and pathogens. In this review, a few examples are described and discussed, and some of the problems in determining the precise role(s) of such metabolites highlighted. The role of secondary metabolites in defence may involve deterrence/anti‐feedant activity, toxicity or acting as precursors to physical defence systems. Many specialist herbivores and pathogens do not merely circumvent the deterrent or toxic effects of secondary metabolites but actually utilize these compounds as either host recognition cues or nutrients (or both). This is true of both cyanogenic glucosides and glucosinolates, which art discussed in detail as examples of defensive compounds. Their biochemistry is compared and contrasted. An enormous variety of secondary metabolites are derived from shikimic acid or aromatic amino acids, many of which have important roles in defence mechanisms. Several classes of secondary products are ‘induced’ by infection, wounding or herbivory, and examples of these are given. Genetic variation in the speed and extent of such induction may account, at least in part, for the difference between resistant and susceptible varieties. Both salicylates and jasmonates have been implicated as signals in such responses and in many other physiological processes, though their prescise roles and interactions in signalling and development are not fully understood.

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“…The low content of glucosinolates in the rape plant vegetation parts questions their supply function (Zhao et al 1993a, b, Fieldsend andMilford 1994), while the content of the total sulphur and sulphates in the leaves during maturing in the wrapping layers of the siliques of rape plants, reflects the nutritional status of rape plant in the best way.…”

Section: Glucosinolates As Sulphur Supplymentioning

confidence: 99%

The role and effects of glucosinolates of Brassica species - a review

Zukalova¹,

Vasak²

2002

Plant Soil Environ.

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Glucosinolates are the substituted esters of thio amino acids and their synthesis is based on the corresponding amino acids. Methionine and cysteine are the natural donors in the case of the Brassica plants and L-tryptophane in the indole glucosinolates, respectively. In Brassica genus, alkenyl glucosinolates are mostly present and their content and composition differ as far as the development stage and the part of the plant are concerned. The indole glucosinolates are present in a minority level. Their role of sulphur supply is questioned by their very low content between 2% in the beginning of vegetation and 0.1% in its end. Glucosinolates are discussed mostly from the aspect of their anti-nutrition, anti-microbial, anti-fungicidal, and anti-bacterial effects and as being natural bio-fumigants. Their decomposition products have the mentioned properties. The products originate by prepared passive protection by the two-component system. From the aspect of these properties, it is useful to divide them into the following three groups according to the characters of their decomposition products. The first group (I.), whose hydrolysis in the neutral and alkaline environment creates iso-thiocyanates. These bioactive compounds form the natural protection of the plant with bio-fumigatory effects particularly. Their anti-nutritive effects can be compensated by iodine, contrary to the second group (II.). This group is created by hydroxy-glucosinolates, whose decomposition products -iso-thio-cyanates -are not stable and they cycle while producing substituted 2-oxazolidinethione (goitrine -VTO). These glucosinolates represent a serious problem in feed industry since the VTO has a strong goitrogenic property. The third group (III.) -glucosinolates containing the indole group or the benzene ring (Sinalbin), create thio-cyanates during their hydrolysis. The role of indole glucosinolates has not been completely clarified so far. Their anti-carcinogenic effects are studied and they fulfil the role of an active protection.

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Changes in glucosinolates during crop development in single‐ and double‐low genotypes of winter oilseed rape (Brassica napus): I. Production and distribution in vegetative tissues and developing pods during development and potential role in the recycling of sulphur within the crop

Cited by 70 publications

References 14 publications

Variation of Glucosinolate Composition during Seedling and Growth Stages of Brassica rapa L. ssp. pekinensis

Variation of Glucosinolate Composition during Seedling and Growth Stages of Brassica rapa L. ssp. pekinensis

Secondary metabolites in plant defence mechanisms

The role and effects of glucosinolates of Brassica species - a review

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