Effects of UV-B radiation, cold and desiccation stress on rutin concentration and rutin glucosidase activity in tartary buckwheat (Fagopyrum tataricum) leaves

Suzuki, Tatsuro; Honda, Yoshiyuki; Mukasa, Yuji

doi:10.1016/j.plantsci.2005.01.007

Cited by 131 publications

(103 citation statements)

References 13 publications

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“…On the basis of these results obtained in present study, it could be speculated that the phenylpropanoid pathway was closely associated with the flavonoid biosynthesis in F. tataricum sprout cultures. That was in general agreement with those found in previous reports (Breznik et al 2005;Suzuki et al 2005;Liu et al 2006;Zhao et al 2012). Moreover, it also indicated that the exogenous endophytic fungal mycelia polysaccharide, as efficient biotic elicitors, may be taken up by receptors on the surface of the sprout or transformed to a stress signal in stimulating the functional metabolite accumulation of buckwheat sprouts, which needs to be further certificated.…”

Section: Discussionsupporting

confidence: 92%

Efficient promotion of the sprout growth and rutin production of tartary buckwheat by associated fungal endophytes

Zhao¹,

Zhong²,

Zou³

et al. 2014

Cereal Research Communications

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The purpose of this study was to investigate the effects of endophytic fungi from tartary buckwheat on the host sprout growth and functional metabolite production. Without obvious changes in the appearance of the sprouts, the exogenous fungal mycelia elicitors notably stimulated the sprout growth and rutin accumulation, and the stimulation effect was mainly depended on the mycelia elicitor species along with its treatment dose. Three endophytic fungi Fat6 (Bionectria pityrodes), Fat9 (Fusarium oxysporum) and Fat15 (Alternaria sp.) were screened to be the most effective candidates for promoting F. tataricum sprout growth and rutin production. With application of polysaccharide (PS, 150 mg/l) of endophyte Fat6, PS (200 mg/l) of endophyte Fat9, and PS (150 mg/l) of endophyte Fat15, the rutin yield was effectively increased to 47.89 mg/(100 sprouts), 45.85 mg/(100 sprouts) and 46.83 mg/(100 sprouts), respectively. That was about 1.5-to 1.6-fold compared to the control culture of 29.37 mg/(100 sprouts). Furthermore, the present study revealed that the biosynthesis of the functional flavonoid resulted from the stimulation of the phenylpropanoid pathway by mycelia polysaccharide treatments. Application of specific fungal elicitors could be an efficient strategy for improving the nutritional and functional quality of tartary buckwheat sprouts.

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Section: Discussionsupporting

confidence: 92%

Efficient promotion of the sprout growth and rutin production of tartary buckwheat by associated fungal endophytes

Zhao¹,

Zhong²,

Zou³

et al. 2014

Cereal Research Communications

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“…This may imply that the secondary metabolism was negatively affected by the high level of UV-B radiation (Day et al, 1996;Correia et al, 1999). Additionally, our results indicated that the UV-B absorbing compounds and rutin concentrations decreased along the decline of leaf position, which has been also observed by Suzuki et al (2005). These results suggest that the UV-B absorbing compounds and rutin are mainly synthesized in young leaves and they are used to protect young leaf tissue under exposure to UV-B.…”

Section: Effect Of Uv-b Radiation On Leaf Pigments and Uv-b Absorbingsupporting

confidence: 68%

Effects of ultraviolet-B radiation on crop growth, development, yield and leaf pigment concentration of tartary buckwheat (Fagopyrum tataricum) under field conditions

Yao

Xuan

et al. 2006

European Journal of Agronomy

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“…Flavonoids protect the photosynthetic apparatus and subcellular organelles against damage caused by UV radiation [23,25]. Their presence in the walls of epidermal cells is generally associated with UV protection, whereas the presence of mesophyll cells in vacuoles and chloroplasts is linked with reactive oxygen species scavenging [1].…”

Section: Resultsmentioning

confidence: 99%

“…Buckwheat seedlings also contain glycosides of cyanidin which occur mainly in the reddish hypocotyl and, in smaller amounts, in the cotyledons [14,29]. Due to their high flavonoid content, buckwheat plant is often used in research examining the effects of UV radiation on these compounds [7,11,16,24,25,28,31].…”

Section: Introductionmentioning

confidence: 99%

UV-B radiation increases anthocyanin levels in cotyledons and inhibits the growth of common buckwheat seedlings

Dębski¹,

Szwed²,

Wiczkowski³

et al. 2016

Acta Biologica Hungarica

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The impact of short-term UV-B treatment on the content of individual flavonoids and photosynthetic pigments in cotyledons and the growth of common buckwheat (Fagopyrum esculentum Moench) seedlings was investigated. Seeds of four common buckwheat cultivars were germinated in darkness over a period of 4 days and acclimatized for 2 days under a 16/8 h light/dark photoperiod at 24/18 °C day/night, and exposure to 100-120 μmol • m -2 • s -1 of photosynthetically active radiation (PAR). Seedlings were divided into three batches, including two batches subjected to different doses of UV-B (5 W • m -2 and 10 W • m -2 , one hour per day) for 5 days, and a control group exposed to PAR only. Exposure to UV-B increased anthocyanin levels in the cotyledons of all examined cultivars, it inhibited hypocotyl elongation, but did not affect the content of photosynthetic pigments. Flavone concentrations increased in cv. Red Corolla and Kora, remained constant in cv. Panda and decreased in cv. Hruszowska. Exposure to UV-B decreased rutin levels in cv. Hruszowska, but not in the remaining cultivars. Cultivars Hruszowska, Panda and Kora appeared to be less resistant to UV-B than Red Corolla. Higher resistance to UV-B radiation in Red Corolla can probably be attributed to its higher content of anthocyanins and rutin in comparison with the remaining cultivars.

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Effects of UV-B radiation, cold and desiccation stress on rutin concentration and rutin glucosidase activity in tartary buckwheat (Fagopyrum tataricum) leaves

Cited by 131 publications

References 13 publications

Efficient promotion of the sprout growth and rutin production of tartary buckwheat by associated fungal endophytes

Efficient promotion of the sprout growth and rutin production of tartary buckwheat by associated fungal endophytes

Effects of ultraviolet-B radiation on crop growth, development, yield and leaf pigment concentration of tartary buckwheat (Fagopyrum tataricum) under field conditions

UV-B radiation increases anthocyanin levels in cotyledons and inhibits the growth of common buckwheat seedlings

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