Variation of bioactive substances and morphological traits in Hypericum perforatum populations from Northern Turkey

Çırak, Cüneyt; Radušienė, Jolita; Karabük, Birsen; Janulis, Valdimaras

doi:10.1016/j.bse.2007.01.009

Cited by 41 publications

(19 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Chemical and morphological variability was studied in H. perforatum samples collected from different locations of Northern Turkey. Hypericin content was found to be correlated positively with leaf dark gland density, however, negatively with leaf area and no correlation was detected between the other morphological traits and bioactive substances examined (Cirak et al, 2007c).…”

Section: Agricultural Studiesmentioning

confidence: 92%

An overview on Hypericum species of Turkey

Eroğlu¹,

Aksu²,

Mat³

2013

J. Pharmacognosy Phytother.

View full text Add to dashboard Cite

Section: Agricultural Studiesmentioning

confidence: 92%

An overview on Hypericum species of Turkey

Eroğlu¹,

Aksu²,

Mat³

2013

J. Pharmacognosy Phytother.

View full text Add to dashboard Cite

“…Density of dark glands on the top leaves of plants from different Australian populations varied from 0.33 to 0.50 glands per mm 2 of leaf area (Southwell and Campbell 1991) and that of northwestern USA populations from 0.61 to 0.85 (Walker et al 2001). On the other hand, Cirak et al (2007) reported on several times higher gland density on leaves. The other available data provide total counts per leaf that vary between 11.12 and 19.93 (Briskin andGawienowski 2001) or 10.3-15.2 (Kirakosyan et al 2003), but do not indicate gland density.…”

Section: Morphological and Biochemical Traits Of Plants Ex Vitromentioning

confidence: 93%

Characterization of hairy root-phenotype in transgenic Hypericum perforatum L. clones

et al. 2008

View full text Add to dashboard Cite

Hairy root-regenerated clones of Hypericum perforatum L. grown in vitro similarly to those successfully adapted to ex vitro conditions showed phenotype features typical for plants transformed with Agrobacterium rhizogenes T-DNA. These included reduced apical dominance, increased branching, dwarfing and reduced fertility. Transgenic clones differed in ability to develop root system as a necessary condition for transfer to the soil. One of the profiling characters, capability of hypericin biosynthesis was altered as well. Dark glands as the sites of hypericin accumulation and/or synthesis exhibited significantly higher densities on both, leaves and petals of transgenic clones comparing to controls. In the genome of transgenic clones, rolABC genes were detected. Both clones harboured similar copy number of individual rol genes. However, copy numbers descended from rolA to rolC gene in both clones.

show abstract

“…A detailed review of the literature [45][46][47] for DPPH radical scavenging and antioxidant activity of flavonoid compounds in HP revealed that fractions containing flavonoid aglycones (i.e. quercetin, kaempferol, biapigenin) produced higher antioxidant activity than all others.…”

Section: Adsorption From Hp Stems Extractmentioning

confidence: 99%