A dihydrocinnamoyl neoflavanoid from pityrogramma calomelanos

1987 ◽  
Vol 26 (4) ◽  
pp. 1143-1145 ◽  
Author(s):  
Dervilla M.X. Donnelly ◽  
Naomichi Fukuda ◽  
Eckhard Wollenweber ◽  
Judith Polonsky ◽  
Thierry Prange
1985 ◽  
Vol 75 (1) ◽  
pp. 1 ◽  
Author(s):  
Robert A. Spicer ◽  
Robyn J. Burnham ◽  
Paul Grant ◽  
Harry Glicken

1979 ◽  
Vol 20 (44) ◽  
pp. 4269-4272 ◽  
Author(s):  
Hildebert Wagner ◽  
Otto Seligmann ◽  
Mohan V. Chari ◽  
Eckhard Wollenweber ◽  
Volker H. Dietz ◽  
...  

2020 ◽  
Vol 148 ◽  
pp. 05007 ◽  
Author(s):  
Zar Che Win ◽  
Leslie Joy L. Diaz ◽  
Teresita R. Perez ◽  
Kiyohiko Nakasaki

In this study, viability of employing the waste treatment technique for industrial application was conducted by setting up a phytoremediation protocol for field application where heavy metal (Arsenic and Copper) contaminated adsorbents, i.e. coco peat and nanofiber membrane, used for the treatment of wastewater were also included. An arsenic hyperaccumulator, Pityrogramma calomelanos was used for the treatment of mine wastes-tailings, coco peat and nanofiber membrane. Phytoremediation procedure was established by investigating planting parameters namely ; plot height - (9 cm and 15 cm) and planting distance- (15 cm and 20 cm) for a period of five months. Translocation factor and % uptake of As and Cu by ferns were measured. According to the results, % uptake of As and Cu by P. Calomelanos was 0.16 % and 0.01 % and translocation factor of As and Cu was 6.78 and 0.04, respectively. Plant growth factors (root length, frond height and dry weight) in tailings mixture plant boxes and control soil were also determined. Accordingly, P. calomelanos grew well in tailings mixture without the symptom of phytotoxicity. Therefore, P. calomelanos can be used for the phytoremediation of the said heavy metal contaminated mine wastes. Based on this study, 15 cm plot height and 20 cm plant distance were suitable for field experiment although long term research data is required. The overall protocol for the treatment of mine wastes as field experiment was proposed based on the results.


1982 ◽  
Vol 37 (3-4) ◽  
pp. 337-339 ◽  
Author(s):  
Christiane Hitz ◽  
Karin Mann ◽  
Eckhard Wollenweber

Abstract2′,6′,4-OH, 4′-OMe-chalcone (neosakuranetin) and 2′,6′,4-OH, 4′-OMe-dihydrochalcone (asebogenin) were found as major constituents of the frond exudate on one in­ dividual plant of Pityrogramma calomelanos. Galangin-5,7-dimethyl ether was isolated from the farina on fronds of a certain population of Pityrogramma triangularis as a novel natural flavonol.


2010 ◽  
Vol 61 (12) ◽  
pp. 3041-3049 ◽  
Author(s):  
J. W. H. Yong ◽  
S. N. Tan ◽  
Y. F. Ng ◽  
K. K. K. Low ◽  
S. F. Peh ◽  
...  

This work comprised of the comparative study of arsenic (As) uptake efficiency by Pteris vittata and Pityrogramma calomelanos grown in (i) As amended soils (0–600 ppm) and (ii) As tainted water (40 ppb) using a new compact continuous flow phytofiltration system in a tropical greenhouse. The As hyperaccumulation efficiency was dependent on the growth medium for the two fern species. The highest level of As detected in the fronds of P. vittata was 19,300 ± 190 ppm (dry weight basis) and 11,600 ± 230 ppm for Pityrogramma calomelanos, after growing for 78 days in soils amended with As. In the compact continuous flow As phytofiltration system experiments, Pityrogramma calomelanos was found to perform better than P. vittata in phytofiltrating As contaminated water under waterlogged conditions. During the 167 h of phytofiltration experiment, the removal efficiency was approximately 99% and 67% for Pityrogramma calomelanos and P. vittata systems respectively, based on an initial 40 ppb As. Pityrogramma calomelanos also required a shorter acclimatization time than P. vittata under waterlogged conditions.


2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Shastri P. Shukla ◽  
P. B. Khare

This study was undertaken to identify methods of mass multiplication for five ornamental, economically important ferns (Nephrolepis biserrata (Sw.) Schott., N. cordifolia cv. ‘‘duffii’’ (L.) Presl., N. exaltata cv. bostoniensis (L.) Schott., Pteris vittata L., and Cyclosorus dentatus Link.,) and three threatened ferns, namely, Cyathea spinulosa Wall. ex. Hook, Pityrogramma calomelanos (L.) Link., and Microsorum punctatum (L.) Schott., through in vitro techniques. Collections were made from different biodiversity zones of India including Northeast Himalayas, Kumaon Himalayas, and Western Ghat and successfully introduced and grown in a fern-house. Aseptic cultures were raised at the morphogenic level of callus, axillary shoot, multiple shoot, and rooted plants. An optimized medium is described for each fern species. Plantlets were also produced from spore culture of Cyathea spinulosa and successfully hardened under fern house conditions.


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