Thiocyanate ion (SCN<sup>−</sup>) content of hypocotyl‐root region of <i>Raphanus sativus</i> as affected by environment

Neil, Lucas; Bible, Bernard B.

doi:10.1002/jsfa.2740231114

Cited by 11 publications

(6 citation statements)

References 9 publications

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“…The early radishes during the greatest root growth cumulated SCN-. This also contradicted the "diluting effect", but was in accordance with the data given by Neil and Bible (1972) concerning the cultivar of similar morphophysiological characteristics (Bupree White) and tested DYNAMICS OF THIOCYANATE CONTENT CHANGES 1?4 RADISH... also between the moment of hypocotyl-root setting and its harvest maturity. The changes in thiocyanate root content were much more regular in the case of winter radish.…”

Section: Discussionsupporting

confidence: 82%

“…In leaves these changes were the same for some cultivars, while for the others the drops started after a constant rise which lasted up to 7 weeks from sowing. Neil and Bible (1972), who analysed the changes in the content of these compounds solely during the hypocotyl-root formation proved a significant initial rise for the cultivar Bupree White. It was then followed by the drop down to the content only slightly higher than the initial one.…”

Section: Discussionmentioning

confidence: 99%

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Changes in thiocyanate content in some radish Raphanus sativus L. cultivars during hypocotyl-root growth

Capecka¹

1998

Acta Physiol Plant

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Changes in the thiocyanate content in hypocotyl-roots and leaves of radish were observed in a two-year field experiment. Six cultivars were tested: early radish (Rex and Ostergruss R6~owa), Japanese radish (Tokinashi and Minowase Summer Cross FL), and winter radish (Monachijska Biata and Murzynka). A significant diversification in thiocyanate content among cultivars, plant parts, harvest dates and observation years was found. Early cultivars contained the least amount of these compounds, Murzynka -the greatest. The content of thiocyanates in leaves was 3 -5 times higher than that in hypocotyl-roots. The changes in the thiocyanate content during root growth showed a constant rising tendency in the case of the leaves of all cultivars and the storage organs of Murzynka.

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Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Changes in thiocyanate content in some radish Raphanus sativus L. cultivars during hypocotyl-root growth

Capecka¹

1998

Acta Physiol Plant

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“…Glucosinolate concentrations in our experiment were relatively low, but averaged 25% higher in stressed plants (Table 3). Elevated concentrations would be consistent with observations of increased glucosinolates under conditions that stress plants (Neil and Bible 1972, Louda and Rodman 1983a, b, Gershenzon 1984, Mattson and Haack 1987a. However, the direct relationship between stress and glucosinolates still requires testing.…”

Section: Nutrient and Al/elochemic Concentrationssupporting

confidence: 87%

Plant Resistance to Insect Herbivores: A Field Test of the Environmental Stress Hypothesis

Louda¹,

Collinge²

1992

Ecology

142

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Abstract. We tested the hypothesis that environmental stresses decrease overall plant resistance to insect herbivory in the field and evaluated biochemical mechanisms proposed to explain insect response to stressed plants. To impose a stress treatment, we severed lateral roots and rhizomes of a native crucifer (bittercress, Cardamine cordifolia) and quantified plant and herbivore responses for treatment and control clones. Severing roots and rhizomes once, early in the growing season: (1) produced moderate, but detectable, changes in plant physiological traits, specifically greater transient leaf water deficits at midday (P < .05) and elevated nitrate-nitrogen concentrations (P < .05); (2) altered plant quality, by causing an increase in soluble carbohydrates (P < .003), isoleucine concentrations in leaves (P < .01), and possibly glucosinolate concentration (P < .10), but made no differences in most primary nutrient concentrations, including total nitrogen, total free amino nitrogen, total amino acids, proline, and leaf water content; and (3) led to increased herbivore by chewing and leaf-mining (P < .001), but not by sap-feeding, insect herbivores. Trends toward decreased plant stature and fruit reproduction were not significant after 1 mo. In addition to the significant effect of our treatment, we found extensive variation in the magnitude of response to stress and herbivory among replicates. We hypothesize that environmentally induced physiological variation among plants within a plant population commonly distributes insect herbivore disproportionately onto a subset of the individuals, and in so doing influences the demography, distribution, and evolution of that plant population.

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“…A failure to detect any correlation between average daily air temperature during radish growth and SCNconcentration in root radishes, was also reported by Neil and Bible (1972), and no explanation was given for the higher yields of thiocyanates in early seeded crops. Nevertheless the root SCNconcentration in root radishes was well correlated with cold unit accumulation (Bible and Chong 1975).…”

Section: Discussionmentioning

confidence: 82%

“…Bible and Chong (1975) referred to the influence of climate during plant growth on the amount of SCN-(as a measure of glucosinolates). Glucosinolate levels are also affected by season (Michajlovskij and Langer 1959;Neil and Bible 1972;MacLeod and Nussbaum 1977). Chong and Bible (1974) demonstrated changes in glucosinolate concentration during plant ontogeny.…”

Section: Introductionmentioning

confidence: 99%

The variation of glucosinolate concentration during a single day in young plants of Brassica oleracea var Acephala and Capitata

Rosa

Heaney

Rego³

et al. 1994

J Sci Food Agric

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Changes in the total and individual glucosinolate concentrations of Portuguese leaf type cabbage (Brassica oleracea var acephala cv Galega) and white cabbage (B oleracea var capitata cv Predena) were monitored throughout the day. In the first experiment (experiment 1) conducted during two hot days, plants of Galega were grown to the four-leaf stage, harvested at 06:00 h, 10: 00 h, 14: 00 h, 18 : 00 h and 22 : 00 h and analysed for glucosinolate concentration. In a second experiment (experiment 2) in milder circumstances, Predena and Galega were grown and harvested similarly. Five glucosinolates were detected using a high-performance liquid chromatography method. In experiment 1 the major compound found in Galega was 3-methylsulphinylpropyl glucosinolate (glucoiberin) followed by allyl-(sinigrin) and indol-3-ylmethyl (glucobrassicin) glucosinolates whilst in experiment 2, indol-3-ylmethyl-was the major compound in both cultivars, followed by allyl-and 4-methoxyindol-3-ylmethyl glucosinolates. A significant decrease in total glucosinolate concentration was noted between 1O:OO h and 14:00 h, and the highest concentrations occurred at 18:OO h in experiment 1 and between 06:00 h and 10:00 h in experiment 2. For the total glucosinolate concentration and each of the detected glucosinolates there were very high significant differences (P < 0401) across the five sampling times in experiment 1. In experiment 2, Galega showed significant differences for total glucosinolate (P < 0.01), allyl glucosinolate (P < 0.05), indol-3-ylmethyl-(P < 0.05) and I-methoxyindol-3-ylmethyl-(P < 0.05), whilst in Predena only 4-methoxyindol-3-ylmethyl concentrations were significantly different (P < 0.01) across sampling times.

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Thiocyanate ion (SCN⁻) content of hypocotyl‐root region of Raphanus sativus as affected by environment

Cited by 11 publications

References 9 publications

Changes in thiocyanate content in some radish Raphanus sativus L. cultivars during hypocotyl-root growth

Changes in thiocyanate content in some radish Raphanus sativus L. cultivars during hypocotyl-root growth

Plant Resistance to Insect Herbivores: A Field Test of the Environmental Stress Hypothesis

The variation of glucosinolate concentration during a single day in young plants of Brassica oleracea var Acephala and Capitata

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Thiocyanate ion (SCN−) content of hypocotyl‐root region of Raphanus sativus as affected by environment

Cited by 11 publications

References 9 publications

Changes in thiocyanate content in some radish Raphanus sativus L. cultivars during hypocotyl-root growth

Changes in thiocyanate content in some radish Raphanus sativus L. cultivars during hypocotyl-root growth

Plant Resistance to Insect Herbivores: A Field Test of the Environmental Stress Hypothesis

The variation of glucosinolate concentration during a single day in young plants of Brassica oleracea var Acephala and Capitata

Contact Info

Product

Resources

About

Thiocyanate ion (SCN⁻) content of hypocotyl‐root region of Raphanus sativus as affected by environment