The chemistry and toxicology of bioactive compounds in bracken fern (Pteridium SSP), with special reference to chemical ecology and carcinogenesis

Alonso‐Amelot, Miguel E.

doi:10.1016/s1572-5995(02)80017-5

Cited by 15 publications

(14 citation statements)

References 170 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pteridium ferns are good examples among the pteridophytes with their complex secondary metabolism (Fenwick, 1988;Alonso-Amelot, 2002). In the realm of phenolic derivatives, bracken is a source of various phenolic acids (Bohm and Tryon, 1967;Glass and Bohm, 1969), flavonoids (Swain and Cooper-Driver, 1973;Imperato and Minutiello, 1997) and other related compounds (Tanaka et al, 1993).…”

Section: Change In Phenolics and Tannins With Frond Phenologymentioning

confidence: 99%

Phenolics and condensed tannins in relation to altitude in neotropical Pteridium spp

Alonso‐Amelot

Oliveros

Calcagno-Pisarelli

2004

Biochemical Systematics and Ecology

View full text Add to dashboard Cite

Two species of neotropical bracken, Pteridium caudatum (L.) Maxon (P.c.) and P. arachnoideum (Kaulf.) (P.a.), thrive dominantly in habitats extending from near the sea level to the Andean alpine zone around 3000 m altitude. The scope of sources of stress associated with elevation has three main components: plant competition for resources, activity of herbivores/pathogens, and climate. The contribution of each component varies greatly from place to place and bracken must respond with considerable physiological/genetic plasticity to maintain its dominant status in all these habitats. Phenolic compounds have a number of properties for plant adaptation to evolutionary selective forces of biotic and climatic nature, in particular with reference to their protective role against excessive solar radiation. We have examined the second of these properties by studying the dynamics of low (LMP) and high (HMP) molecular weight phenolics in neotropical bracken ferns in two groups of field experiments: (1) their variation during the phenologic development of blades in sympatric populations of both bracken species to examine the synthesis and allocation of these materials under similar conditions of competition, predation and solar UV-B radiation; (2) the contents of LMP and HMP in six bracken populations of P.c. along its typical altitudinal range [1180-2140 m above sea level (asl)] and six additional populations of P.a. (1880-3190 m asl), which grows at higher elevations in the western Andes of Venezuela, to investigate the phenolics' response to the ecological gradients associated with elevation in these plants. From series (1), we recorded the progressive accumulation of both types of phenolics with frond expansion, and hence increased surface of lamina exposed to sunlight, in P.c. and P.a. However, phenolics in mature blades of P.a. were 1.6 (LMP) and 3.26 (HMP) greater in amount than in P.c. From series (2), synthesis and accumulation of LMP was found to be Ã Corresponding author. independent of altitude, except for the subalpine population of P.a. at 3190 m asl, where a 167% increment of the average contents was recorded. By contrast, the levels of HMP correlated positively with elevation in both bracken species. The independent response of both types of phenolics to solar radiation may be interpreted as either more effective and metabolically cost-effective protection of HMP against UV-B light than LMP or differential light activation of key steps in the biosynthesis of HMP and LMP in bracken. #

show abstract

Section: Change In Phenolics and Tannins With Frond Phenologymentioning

confidence: 99%

Phenolics and condensed tannins in relation to altitude in neotropical Pteridium spp

Alonso‐Amelot

Oliveros

Calcagno-Pisarelli

2004

Biochemical Systematics and Ecology

View full text Add to dashboard Cite

show abstract

“…In consequence, the control of these plants is an economic challenge (e.g., Marrs & al., 2000;Hartig & Beck, 2003;Marrs & Watt, 2006;Stewart & al., 2008). Beside the economic impact of its invasiveness, bracken is frequently consumed by humans and livestock despite the toxicity/carcinogensis of some secondary components (e.g., Alonso-Amelot, 2002;Vetter, 2009).…”

Section: Introductionmentioning

confidence: 99%

How many species of bracken (Pteridium) are there? Assessing the Chinese brackens using molecular evidence

Zhou

Dong

Chen

et al. 2014

TAXON

View full text Add to dashboard Cite

Pteridium (the bracken) is a genus of common and widely distributed ferns throughout the world. The variation patterns of morphology in the genus are highly complex and no consensus has been reached among taxonomists regarding the number of species as well as subdivision of the variable species. To address the question of how many species and subspecies of Pteridium occur in Asia, 75 populations were sampled in Bolivia, China, Japan, Malaysia, Mexico and Peru. Sequence data of three chloroplast DNA regions, rps4‐trnSGGA, rpl16 and trnSGCU‐trnGUCC and the genotype data of three microsatellite loci were collected. The newly generated sequence data combined with the sequences already available from GenBank for samples from all over the world were subjected to several phylogenetic analyses and species delimitation tests. The results support recognition of two diploid species, P. aquilinum in the Northern Hemisphere and Africa and P. esculentum in South America and Australia. Evidence was found to recognize one Asian tetraploid species, P. semihastatum. The Eurasian occurrences of P. aquilinum can be further subdivided into subsp. aquilinum occurring in Africa, Europe and Asia Minor; subsp. japonicum occurring from East Asia to eastern Europe; subsp. wightianum occurring from central China to Malesia (Malay Peninsula, New Caledonia, New Zealand) and northern Australia. The North American subsp. latiusculum was also found in India. Some local “species” recorded in Flora of China likely represent hybrids between subsp. japonicum and subsp. wightianum.

show abstract

“…responded to altitude during the rainy season by increasing its content of high molecular weight phenolics (HMP) only at elevations greater than 2600 m above sea level (Alonso-Amelot et al, 2004). In a continued effort to understand the various biological and chemical traits that make Pteridium ferns among the most dominant plants in the world (Alonso-Amelot et al, 2001;Alonso-Amelot, 2002), we pursued further dynamics of their LMPeHMP load in order to evaluate the effects of season (rain regime and cloudiness), altitude in exposed and self shaded pinnae, and the position of each pinnae relative to the axis of the blade (rachis) in dense high altitude thickets of tropical P. arachnoideum, under field conditions.…”

Section: Introductionmentioning

confidence: 99%

Phenolics and condensed tannins of high altitude Pteridium arachnoideum in relation to sunlight exposure, elevation, and rain regime

Alonso‐Amelot

Oliveros‐Bastidas

Calcagno-Pisarelli

2007

Biochemical Systematics and Ecology

View full text Add to dashboard Cite

The chemistry and toxicology of bioactive compounds in bracken fern (Pteridium SSP), with special reference to chemical ecology and carcinogenesis

Cited by 15 publications

References 170 publications

Phenolics and condensed tannins in relation to altitude in neotropical Pteridium spp

Phenolics and condensed tannins in relation to altitude in neotropical Pteridium spp

How many species of bracken (Pteridium) are there? Assessing the Chinese brackens using molecular evidence

Phenolics and condensed tannins of high altitude Pteridium arachnoideum in relation to sunlight exposure, elevation, and rain regime

Contact Info

Product

Resources

About