Pollination ecology and reproductive potential of Jankaea heldreichii (Gesneriaceae); a tertiary relict on Mt Olympus, Greece

Vokou, Despoina; Petanidou, Theodora; Bellos, D.

doi:10.1016/0006-3207(90)90121-5

Cited by 11 publications

(13 citation statements)

References 5 publications

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“…Olympus is the highest Greek mountain located in central Greece and is characterized by a high plant biodiversity (1,500 plant species of which 26 are endemic) ( 20 ). It is known that chemical composition and bioactivity of honey are greatly affected by the botanical and entomological source, as well as by the climate and geographical location ( 4 , 5 ).…”

Section: Discussionmentioning

confidence: 99%

“…The famous Mount Olympus (Mt. Olympus) in Greece, apart from its mythological interest, contains a very rich plant biodiversity due to special climatic conditions, where a high mountain (2,918 m) spreads next to the Aegean Sea ( 20 , 21 ). Furthermore, Mt.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, Mt. Olympus is the meeting point of Mediterranean and Central European floras and it is a major refuge of ancient European species ( 20 , 21 ). In the Mt.…”

Section: Introductionmentioning

confidence: 99%

“…In the Mt. Olympus area, >1,500 plant species have been recorded (i.e., 25% of Greek flora) of which 26 are endemic ( 20 ). Thus, the aim of this study was to examine the antibacterial and antioxidant activity of 21 different types of honey that were derived from the Mt.…”

Section: Introductionmentioning

confidence: 99%

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Antibacterial and antioxidant activity of different types of honey derived from Mount Olympus in Greece

et al. 2018

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The aim of the present study was to examine the antioxidant and antibacterial activity of 21 types of honey derived from Mount Olympus (Mt. Olympus), a region with great plant biodiversity. The antibacterial activity was examined against the growth of Staphylococcus aureus (S. aureus) and Pseudomonas aeruginosa (P. aeruginosa) by the agar well diffusion assay and the determination of the minimum inhibitory concentration (MIC). The antioxidant activity was assessed by using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid (ABTS•+) free radical scavenging assays. These activities were compared to Manuka honey which is used as an alternative medicine. The results revealed that all tested honey types exhibited antibacterial activity against S. aureus and P. aeruginosa. The MIC of the tested honey types against S. aureus ranged from 3.125 to 12.5% (v/v), while MIC of Manuka honey was determined to be 6.25% (v/v). The MIC values of the tested honey types against P. aeruginosa ranged from 6.25 to 12.5% (v/v) and the MIC of Manuka honey was determined at 12.5% (v/v). Moreover, the results suggested that the presence of hydrogen peroxide and proteinaceous compounds in the honey types accounted, at least in part, for the antibacterial activity. In addition, the total polyphenolic content (TPC) of the honey types seemed to contribute to the antibacterial activity against P. aeruginosa. Furthermore, some of the tested honey types exhibited potent free radical scavenging activity against DPPH and ABTS•+ radicals, which was greater than that of Manuka honey. The results indicated that not only the quantity, but also the quality of the polyphenols were responsible for the antioxidant activity. Moreover, four honey types exhibiting great antioxidant activity were converted to powder using a freeze drying method. The results indicated that following conversion to powder all honey types, apart from one, retained their antioxidant activity, although their TPC was reduced. On the whole, and at least to the best of our knowledge, the present study is the first that extensively examined the bioactivities of different types of honey derived from Mt. Olympus.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Furthermore, Mt. Olympus is the meeting point of Mediterranean and Central European floras and it is a major refuge of ancient European species ( 20 , 21 ). In the Mt.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Antibacterial and antioxidant activity of different types of honey derived from Mount Olympus in Greece

et al. 2018

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“…This is in contrast with previous reports of "more intensive" vegetative reproduction in R. serbica (Velčev et al 1973). Perhaps, With regard to the European representatives of Gesneriaceae, a few studies report pollination observations on J. heldreichii (Vokou et al 1990), H. rhodopensis (Bogacheva-Milkoteva et al 2013) and R. myconi (Picó and Riba 2002).…”

Section: Genetic Diversity and Differentiationmentioning

confidence: 99%

Low genetic diversity in small leading edge populations of the European paleoendemic Ramonda serbica (Gesneriaceae) in Bulgaria

Petrova

Petrov

Möller

2018

Nordic Journal of Botany

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Ramonda serbica Panč. (Gesneriaceae) is an endangered endemic species of the Balkan Peninsula which has been the subject of several studies in the past, but has not yet been investigated in terms of its genetic variation. Ramonda serbica is one of only five European representatives of the mainly subtropical family Gesneriaceae categorized as paleoendemics or Tertiary relicts sequestered in southern Europe by Quaternary climate oscillations. Here, an inter simple sequence repeat (ISSR) analysis was performed to determine the genetic diversity of five populations sampled from the geographically eastern fringe of its range in northwestern Bulgaria. We found relatively low levels of genetic diversity and significant genetic differentiation among the investigated populations, typical of a leading edge scenario. From a conservation point of view, the low genetic diversity, together with the presence of only few extant localities stress the need for urgent in situ and ex situ conservation actions to ensure the long‐term survival of R. serbica in Bulgaria.

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Floral Ecology: Report on the Years 1988 (1987) to 1991 (1992)

Gottsberger¹

1993

Progress in Botany / Fortschritte Der Botanik

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Pollination ecology and reproductive potential of Jankaea heldreichii (Gesneriaceae); a tertiary relict on Mt Olympus, Greece

Cited by 11 publications

References 5 publications

Antibacterial and antioxidant activity of different types of honey derived from Mount Olympus in Greece

Antibacterial and antioxidant activity of different types of honey derived from Mount Olympus in Greece

Low genetic diversity in small leading edge populations of the European paleoendemic Ramonda serbica (Gesneriaceae) in Bulgaria

Floral Ecology: Report on the Years 1988 (1987) to 1991 (1992)

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