Secondary Metabolites in Bryophytes: An Ecological Aspect

Xie, Chunfeng; Lou, Hongxiang

doi:10.1002/cbdv.200700450

Cited by 126 publications

(100 citation statements)

References 55 publications

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“…Contrary to the hypothesis of bryophytes being unpalatable to herbivores due to their chemical defences, with many secondary metabolites functioning to protect against herbivory, and their consideration as nutrient-poor plants for herbivores (Glime, 2006;Cornelissen et al, 2007;Xie & Lou, 2009), our results suggest that there is frequent, although low magnitude, herbivory in two mosses present in the understory of a tropical rainforest. The total values and mean number of injured plants, as well as the index of damage, were higher in H. tamarisci than in L. concinnum, indicating that H. tamarisci was more favoured by herbivores.…”

Section: Discussioncontrasting

confidence: 85%

Detecting herbivory in two mosses from an Atlantic Forest, Brazil

Maciel-Silva

Santos

2011

Journal of Bryology

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We recorded evidence for herbivory in the mosses Hypopterygium tamarisci and Lopidium concinnum in a tropical rainforest (Sã o Paulo State, Brazil). We described this herbivory quantitatively, measured the protein and phenol abundance, and identified potential herbivores in the laboratory. We sampled plants from 10 colonies of each species in the years 2007 and 2008. To quantify herbivory, we used an index of damage (ID), with six categories of injury from 0 (0%) to 5 (50-100%). Air-dried moss samples were weighed (100 mg) and used for protein and phenol detection by the Bradford and Folin-Ciocalteau methods, respectively. The plants were cultivated under controlled laboratory conditions and the identification of herbivores was performed from photographs. Injury was higher in H. tamarisci than in L. concinnum (68% and 38% in 2007 and 35% and 23% in 2008, respectively). H. tamarisci had higher mean ID (1.70 in 2007 and 1.09 in 2008); however, the ID values were low compared with ID values detected in angiosperms from tropical forests. Proteins were more abundant than phenol compounds for both species. H. tamarisci had the highest levels of protein and phenols. The phenol/protein ratios (ph/pt ratio) from H. tamarisci (0.42) and L. concinnum (0.40) were similar to those of other terrestrial plants. No correlation between ID and ph/pt ratio, proteins or phenols was detected. Lepidoptera larvae (Geometridae) and micro-snails (Charopidae) were found feeding mainly on the leaves of these mosses. Thus, H. tamarisci and L. concinnum are food sources for herbivores in the field, mainly as alternative food sources for some small and less mobile herbivores.

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Section: Discussioncontrasting

confidence: 85%

Detecting herbivory in two mosses from an Atlantic Forest, Brazil

Maciel-Silva

Santos

2011

Journal of Bryology

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“…This sample is nearly 8000 cal yr BP old, but we would have expected bryophytes to be present earlier in the record. The apparently low preservation potential of bryophyte DNA could be linked to the high production of secondary metabolites in bryophytes (Xie and Lou, 2009), which enhance DNA degradation. Vascular plant DNA on the other hand was found down to the bottom of the core, albeit with low diversity.…”

Section: Dna-based Paleoenvironmental History Of Bliss Lake and Surromentioning

confidence: 99%

Lake sediment multi-taxon DNA from North Greenland records early post-glacial appearance of vascular plants and accurately tracks environmental changes

Epp

Gussarova

Boessenkool

et al. 2015

Quaternary Science Reviews

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a b s t r a c tHigh Arctic environments are particularly sensitive to climate changes, but retrieval of paleoecological data is challenging due to low productivity and biomass. At the same time, Arctic soils and sediments have proven exceptional for long-term DNA preservation due to their constantly low temperatures. Lake sediments contain DNA paleorecords of the surrounding ecosystems and can be used to retrieve a variety of organismal groups from a single sample. In this study, we analyzed vascular plant, bryophyte, algal (in particular diatom) and copepod DNA retrieved from a sediment core spanning the Holocene, taken from Bliss Lake on the northernmost coast of Greenland. A previous multi-proxy study including microscopic diatom analyses showed that this lake experienced changes between marine and lacustrine conditions. We inferred the same environmental changes from algal DNA preserved in the sediment core. Our DNA record was stratigraphically coherent, with no indication of leaching between layers, and our cross-taxon comparisons were in accordance with previously inferred local ecosystem changes. Authentic ancient plant DNA was retrieved from nearly all layers, both from the marine and the limnic phases, and distinct temporal changes in plant presence were recovered. The plant DNA was mostly in agreement with expected vegetation history, but very early occurrences of vascular plants, including the woody Empetrum nigrum, document terrestrial vegetation very shortly after glacial retreat. Our study shows that multitaxon metabarcoding of sedimentary ancient DNA from lake cores is a valuable tool both for terrestrial and aquatic paleoecology, even in low-productivity ecosystems such as the High Arctic.

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“…Both the plants show substantial antimicrobial activity and clear zone of inhibition were seen (Plate 1). However, the comparatice results showed that H. involuta was found more active against all the three bacterial strains even at lower concentration (10mg/mL), indicating that more quantity of secondary metabolites and elevated antioxidant enzymatic activity are the possible reasons for this enhanced inhibitory response (Xie and Lou, 2009). …”

Section: Resultsmentioning

confidence: 94%

Evaluation of Phytochemicals, Antioxidant and Antibacterial Activity of Hyophila involuta (Hook.) Jaeg. and Entodon plicatus C.Muell. (Bryophyta) from Rajasthan, India

Singh¹,

Alam²,

Sharma³

2016

IJSRK

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Abstract. Plants are the ultimate source of drugs against many communicable diseases since time immemorial. Multitudinous drugs have been obtained from countless plant species. However, invariably angiosperms were the preferred choice of most of the workers and other plant groups remain somewhat unexplored in this direction. Hence, the aim of the present study was to examine the phytochemicals, antioxidant and antibacterial activity of two such neglected mosses (bryophyta), Hyophila involuta (Hook.) Jaeg. and Entodon plicatus C. Muell. (Bryopsida). In preluded phytochemical analysis cardiac glycosides, flavonoids, saponins, anthroquinone, terpenoids, tannins, phenolic, proteins, fats and fixed oils were observed by using standard tests. It was found that E. plicatus contains more amount of phytochemicals than H. involuta. The antioxidant activity of both the plants was also determined according to standard protocols and appealing results were found. Comparative analysis was done for the activity of Catalase, Peroxidase, Ascorbate peroxidase, Glutathione reductase and Superoxide dismutase and interesting observations were made. Antimicrobial activity of methanolic extracts of both the plants was evaluated against Bacillus subtilis, B. cereus and Escherichia coli by using the Agar well diffusion method. Extract of H. involuta showed a greater inhibitory activity than Entodon plicatus. Bacillus spp. (gram+ve) were found more affected than E. coli (gram-ve).

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Secondary Metabolites in Bryophytes: An Ecological Aspect

Cited by 126 publications

References 55 publications

Detecting herbivory in two mosses from an Atlantic Forest, Brazil

Detecting herbivory in two mosses from an Atlantic Forest, Brazil

Lake sediment multi-taxon DNA from North Greenland records early post-glacial appearance of vascular plants and accurately tracks environmental changes

Evaluation of Phytochemicals, Antioxidant and Antibacterial Activity of Hyophila involuta (Hook.) Jaeg. and Entodon plicatus C.Muell. (Bryophyta) from Rajasthan, India

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