Glucosinolates in Crop Plants

Rosa, Eduardo; Heaney, Robert K.; Fenwick, G. R.; Portas, C.A.M.

doi:10.1002/9780470650622.ch3

Cited by 172 publications

(193 citation statements)

References 322 publications

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“…11;and gluconasturtiin,No. 12) are consistent with those reported in previous studies (Rosa et al 1997;Ciska et al 2000;Skutlarek et al 2004;Kang et al 2006;Padilla et al 2007). Kang et al (2006) studied in 23 accessions of Chinese cabbage the factors affecting the phenotypic variation of gsl content in two different environments.…”

Section: Natural Variation Of Glucosinolate Compositionsupporting

confidence: 83%

Survey of glucosinolate variation in leaves of Brassica rapa crops

Yang

Quirós

2010

Genet Resour Crop Evol

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The breakdown products of glucosinolates (gsl) are biologically active secondary metabolites involved in plant defense and human nutrition. We identified and quantified 14 different gsl present in the young leaves of 82 different varieties of Brassica rapa, including the following crops: Chinese cabbage, broccoleto, Pak choi and other leafy vegetables, turnip, sarson and rapeseed. We did not find crop specific gsl, but their quantity varied extensively among varieties and crops, except that the Chinese cabbage accessions tended to have similar gsl profile and amount. Gluconapin, glucobrassicanapin (aliphatic), neoglucobrassicin, glucobrassicin (indolic), and gluconaturtiin (aromatic) are the predominant gsl in most of the varieties surveyed. We also found two gsl not commonly found in B. rapa, 2-methyl-2-propenyl and n-butyl. Their identities were confirmed by HPLC-MS. Most of the Chinese cabbages contain lower amount of aliphatic than indolic gsl, whereas broccoleto, turnip and rapeseed all have much higher aliphatic gsl content than indolic gsl content. The predominant aliphatic gsl in most of the varieties contain 4-carbon side-chains. The lack of significant correlation observed between the conversion of 3-to 4-carbon side-chain gsl and the conversion of 4-to 5-carbon side-chain gsl suggests that these two elongation cycles are probably under the control of two independent genes in B. rapa. The absence of glucoraphanin in all accessions indicates that only functional Brgsl-Alk alleles are present in B. rapa.

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Section: Natural Variation Of Glucosinolate Compositionsupporting

confidence: 83%

Survey of glucosinolate variation in leaves of Brassica rapa crops

Yang

Quirós

2010

Genet Resour Crop Evol

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“…The characteristic pungent, peppery taste of rocket is due to sulphur-rich, volatile isothiocyanates, which in turn arise via hydrolysis from glucosinolates, a group of natural products responsible for the characteristic aroma of many Brassicaceae (Macleod, 1976;Rodman, 1991). These compounds have a relevant role in plant protection (Rosa et al, 1997;Fahey et al, 2001) and human and animal health (Srinibas et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Germination and electrical conductivity tests on artificially aged seed lots of 2 wall-rocket species

Lazar¹,

Mira

Pamfil³

et al. 2014

Turk J Agric For

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The aim of this study was to determine whether the loss of germinability and vigour in wall-rocket seed lots was related to electrolyte leakage. Ten seed lots of 2 wall-rocket species (9 of Diplotaxis tenuifolia and one of D. erucoides (Brassicaceae)) were stored at 45 °C and 70% relative humidity and electrolyte leakage was measured using the conductivity test. Small differences in longevity were found among species or seed lots, suggesting that a similar relative longevity might be expected within the genus Diplotaxis after artificial ageing, and that it will be above the average of that found in other species of the same family at similar storage conditions. Electrolyte loss was strongly related to loss of seed viability. There was a negative linear relationship between conductivity and seed germination (R 2 = 0.85), and a positive relationship with T 50 (R 2 = 0.77). Small differences were found among species or seed lots regarding the correlation between electrolyte leakage and seed germination and vigour. Our results indicate that the conductivity method is able to predict the viability of wall-rocket seeds stored at 45 °C and 70% RH, with the same regression equation of conductivity and germination (-33.97x + 135.59) being able to predict the viability of different seed lots and species. A conductivity level ranging from 1.4 to 2.2 mS g -1 DW would indicate that the potential of a Diplotaxis seed lot to germinate has decreased to 80%. The correlation between electrolyte leakage and seed germination provides a valuable means for early detection of seed viability in wall-rocket seeds.

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“…Recently, it has been widely recognized that some of the cancer-chemoprotective activities in these vegetables are attributable to their contents of glucosinolates (GSs) (Zhao et al, 1992;Wattenberg, 1993;Tawfiq et al, 1995;Fahey et al, 1997;Rosa et al, 1997;Holst and Williamson, 2004) (Fig.1). GSs are amino acid-derived secondary compounds, a characteristic of dicotyledonous plants.…”

Section: Introductionmentioning

confidence: 99%

Effect of CO2 enrichment on the glucosinolate contents under different nitrogen levels in bolting stem of Chinese kale (Brassica alboglabra L.)

Fang

Teng

et al. 2009

J. Zhejiang Univ. Sci. B

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Abstract:The effects of CO 2 enrichment on the growth and glucosinolate (GS) concentrations in the bolting stem of Chinese kale (Brassica alboglabra L.) treated with three nitrogen (N) concentrations (5, 10, and 20 mmol/L) were investigated. Height, stem thickness, and dry weights of the total aerial parts, bolting stems, and roots, as well as the root to shoot ratio, significantly increased as CO 2 concentration was elevated from 350 to 800 μl/L at each N concentration. In the edible part of the bolting stem, 11 individual GSs were identified, including 7 aliphatic and 4 indolyl GSs. GS concentration was affected by the elevated CO 2 concentration, N concentration, and CO 2 ×N interaction. At 5 and 10 mmol N/L, the concentrations of aliphatic GSs and total GSs significantly increased, whereas those of indolyl GSs were not affected, by elevated atmospheric CO 2 . However, at 20 mmol N/L, elevated CO 2 had no significant effects on the concentrations of total GSs and total indolyl GSs, but the concentrations of total aliphatic GSs significantly increased. Moreover, the bolting stem carbon (C) content increased, whereas the N and sulfur (S) contents decreased under elevated CO 2 concentration in the three N treatments, resulting in changes in the C/N and N/S ratios. Also the C/N ratio is not a reliable predictor of change of GS concentration, while the changes in N and S contents and the N/S ratio at the elevated CO 2 concentration may influence the GS concentration in Chinese kale bolting stems. The results demonstrate that high nitrogen supply is beneficial for the growth of Chinese kale, but not for the GS concentration in bolting stems, under elevated CO 2 condition.

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Glucosinolates in Crop Plants

Cited by 172 publications

References 322 publications

Survey of glucosinolate variation in leaves of Brassica rapa crops

Survey of glucosinolate variation in leaves of Brassica rapa crops

Germination and electrical conductivity tests on artificially aged seed lots of 2 wall-rocket species

Effect of CO2 enrichment on the glucosinolate contents under different nitrogen levels in bolting stem of Chinese kale (Brassica alboglabra L.)

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