The Subtropical Vegetation of Southwestern China

Tang, Cindy Q.

doi:10.1007/978-94-017-9741-2

Cited by 57 publications

(34 citation statements)

References 102 publications

(183 reference statements)

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“…Thus, as a general rule, relict species are restricted to local habitats with little competition with non-relict species in the regeneration phase, and most of them appear to be shade-intolerant and to belong to the stress-tolerant type 29 . Relict plants are usually pioneer or seral species and, often, at least one of the relict species is a dominant in early or seral successional forest associations, with their persistence seemingly favored by natural disturbances 30 – 34 .…”

Section: Resultsmentioning

confidence: 99%

Identifying long-term stable refugia for relict plant species in East Asia

et al. 2018

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Today East Asia harbors many “relict” plant species whose ranges were much larger during the Paleogene-Neogene and earlier. The ecological and climatic conditions suitable for these relict species have not been identified. Here, we map the abundance and distribution patterns of relict species, showing high abundance in the humid subtropical/warm-temperate forest regions. We further use Ecological Niche Modeling to show that these patterns align with maps of climate refugia, and we predict species’ chances of persistence given the future climatic changes expected for East Asia. By 2070, potentially suitable areas with high richness of relict species will decrease, although the areas as a whole will probably expand. We identify areas in southwestern China and northern Vietnam as long-term climatically stable refugia likely to preserve ancient lineages, highlighting areas that could be prioritized for conservation of such species.

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Section: Resultsmentioning

confidence: 99%

Identifying long-term stable refugia for relict plant species in East Asia

et al. 2018

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“…For the sections Lageniformes and Rhomboidales, both mostly endemic to East Asia (Dai et al, 2010), their presence in this area can be traced back to the late Miocene (Japan). Despite the fact that the persistence of Tertiary relict taxa in East Asia and North America is a fairly well-known phenomenon (Milne & Abbott, 2002;Huang et al, 2015;Tang, 2015; and references therein), reports of the species of such nature are more rare in Europe and mainly refer to woody plants (e.g., Palamarev, 1989;Willis & Niklas, 2004). Our data suggests that at least species from section Rhynchocystis and Carex pseudocyperus-like plants may be herbaceous Tertiary relicts in the Old Continent.…”

Section: Conclusion Paleobiogeography and Paleoecology Of Carexmentioning

confidence: 64%

A Commented Synopsis of the Pre-Pleistocene Fossil Record of Carex (Cyperaceae)

et al. 2016

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Despite the existence of a rich record, fossils of Carex have been largely neglected by neobotanists. Here we present an exhaustive critically commented checklist of the so-far published pre-Pleistocene records ascribed to Carex. We have made every attempt to include all pertinent paleobotanical literature. The extensive collection of the Museum für Naturkunde (Berlin, Germany) has also been studied. We found that up to 83 names belonging to different Carex groups may be applied to reliable remains, plus another 23 names of doubtful remains. These fossils come from more than 550 sites, mainly from C and E Europe and the Russian Federation. The age of the reliable fossil record ranges from the Eocene to recent times. Problems detected on the taxonomy, age and naming of these fossils are discussed. We hope that this work will stimulate neobotanical and paleobotanical communities to work together on broad-scope systematic projects as this one.

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“…In tropical and subtropical regions of Southeast Asia, oak trees from subgenus Cyclobalanopsis are commonly found. [ 33 34 ] We believe those tannins contained in porcupine diet which are undigested might have been highly concentrated and incorporated into the dates during its formation in the stomach. Chemically, tannins have a structure with numerous hydrolysable moieties such as gallic and ellagic acids which contribute to the high antioxidant properties.…”

Section: Discussionmentioning

confidence: 99%

Antioxidant and intracellular reactive oxygen species/reactive nitrogen species scavenging activities of three porcupine bezoars from Hystrix brachyura

Yew¹,

Lee²,

Lim³

2017

Phcog Res

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Background:Porcupine dates are phytobezoar stones that are used in Traditional Chinese Medicine (TCM) treatments against cancer, postsurgical recovery, dengue fever, etc. The medicinal values have not been scientifically investigated due to the availability and high pricing of the dates.Objectives:This paper represents the first report on the phytochemical content, in vitro antioxidant and intracellular reactive oxygen species (ROS)/reactive nitrogen species (RNS) scavenging properties of the extracts of three porcupine dates: grassy date (GD), black date (BD), and powdery date (PD).Materials and Methods:Dried samples were extracted with methanol and lyophilized. Samples were screened for phytochemical constituents, in vitro antioxidant assays based on total phenolic content (TPC), free radical scavenging, and ferric reducing power (FRP) as well as intracellular ROS and RNS scavenging properties.Results:Phytochemical screening and total tannins assay revealed that tannins, cardiac glycosides, and terpenoids were found in all porcupine dates with tannins forming the major portion of the TPC. In comparison to GD, BD and PD were found to contain significantly high TPC, radical scavenging activity, and FRP. At 200 μg/ml, BD and PD remarkably scavenged 2, 2-azobis (2-amidinopropane) dihydrochloride-induced ROS in RAW264.7 cells and significantly reduced nitric oxide in lipopolysaccharide-stimulated cells.Conclusion:Overall, BD and PD exhibited promising in vitro antioxidant as well as intracellular ROS/RNS scavenging properties.SUMMARY Tannins, cardiac glycoside, and terpenoids were found in all three types of porcupine dates with tannins being the major compoundsAntioxidant contents and properties of three dates were in the order black date (BD) > powdery date (PD) > grassy dateBD and PD extracts showed significant intracellular reactive oxygen species and reactive nitrogen species scavenging properties. Abbreviations Used: TCM: Traditional Chinese Medicine, BD: Black date, GD: Grassy date, PD: Powdery date, TPC: Total phenolic content, FRS: Free radical scavenging, FRP: Ferric reducing power, NO: Nitric oxide, ROS: Reactive oxygen species, RNS: Reactive nitrogen species, GAE: Gallic acid equivalent, AAE: Ascorbic acid equivalent, PVPP: Polyvinylpolypyrrolidone, DCFH-DA: Dichloro-dihydro-fluorescein diacetate, AAPH: 2, 2-azobis (2-amidinopropane) dihydrochloride, LPS: Lipopolysaccharide

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The Subtropical Vegetation of Southwestern China

Cited by 57 publications

References 102 publications

Identifying long-term stable refugia for relict plant species in East Asia

Identifying long-term stable refugia for relict plant species in East Asia

A Commented Synopsis of the Pre-Pleistocene Fossil Record of Carex (Cyperaceae)

Antioxidant and intracellular reactive oxygen species/reactive nitrogen species scavenging activities of three porcupine bezoars from Hystrix brachyura

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