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Beijing, China

The International Network for Bamboo and Rattan is an independent intergovernmental organization established in 1997 to develop and promote innovative solutions to poverty and environmental sustainability using bamboo and rattan. Wikipedia.

Yu Y.,International Center for Bamboo And Rattan | Zhao R.-J.,Chinese Academy of Forestry
Wood and Fiber Science

Bamboo fiber has greater mechanical strength than certain other natural fibers and could therefore be a candidate for production of fiber-reinforced composites. Single fibers were isolated from Moso bamboo samples taken from plants between 0.5 and 8.5 yr old. Mechanical properties of single fibers (tensile strength, modulus of elasticity (MOE), and other mechanical related properties such as the microfibril angle and fiber cross-sectional area) were studied. There was no significant variation with age in average MOE and fracture strain of the bamboo fibers. Results indicate that the thickening growth of cell walls in bamboo fibers near the outer surface of bamboo is almost complete by 0.5 yr. Therefore, fibers from 0.5 to 8.5 yr old plants may be used for making fiber-reinforced composites. © 2012 by the Society of Wood Science and Technology. Source

Hai-Tao C.,International Center for Bamboo And Rattan
Wood and Fiber Science

The objective of this study was to investigate the properties of single Cizhu bamboo fibers isolated by four chemical methods, with and without ultrasonic treatment. Properties tested were static contact angle, lumen size, and mechanical properties (tensile strength, modulus of elasticity [MOE], and elongation) of fibers macerated by four methods: nitric acid and potassium chlorate, sodium hypochlorite (NaClO), hydrogen peroxide and glacial acetic acid (H2O2 + HAc), and sodium hydroxide. The results showed that the maceration time was different among the four methods. Ultrasonic treatment significantly affected the contact angle of all treatments with the exception of H2O2 + HAc. Lumen sizes treated by NaClO were different but cross-sectional area and cell wall area were similar for all other treatments, with and without ultrasonic treatment. Differences in mechanical properties were found among chemicals whereas elongation was similar for all solutions. Ultrasonic treatment accelerated the maceration rate, thus decreasing treatment time and contact angle of single fibers, but had no effect on cell wall area. Tensile strength and MOE were each affected in one solution by ultrasonic treatment, but those effects were within the range of the other solutions. © 2011 by the Society of Wood Science and Technology. Source

Zhao H.,International Center for Bamboo And Rattan | Zhao H.,Chinese Academy of Forestry
Database : the journal of biological databases and curation

Bamboo, as one of the most important non-timber forest products and fastest-growing plants in the world, represents the only major lineage of grasses that is native to forests. Recent success on the first high-quality draft genome sequence of moso bamboo (Phyllostachys edulis) provides new insights on bamboo genetics and evolution. To further extend our understanding on bamboo genome and facilitate future studies on the basis of previous achievements, here we have developed BambooGDB, a bamboo genome database with functional annotation and analysis platform. The de novo sequencing data, together with the full-length complementary DNA and RNA-seq data of moso bamboo composed the main contents of this database. Based on these sequence data, a comprehensively functional annotation for bamboo genome was made. Besides, an analytical platform composed of comparative genomic analysis, protein-protein interactions network, pathway analysis and visualization of genomic data was also constructed. As discovery tools to understand and identify biological mechanisms of bamboo, the platform can be used as a systematic framework for helping and designing experiments for further validation. Moreover, diverse and powerful search tools and a convenient browser were incorporated to facilitate the navigation of these data. As far as we know, this is the first genome database for bamboo. Through integrating high-throughput sequencing data, a full functional annotation and several analysis modules, BambooGDB aims to provide worldwide researchers with a central genomic resource and an extensible analysis platform for bamboo genome. BambooGDB is freely available at http://www.bamboogdb.org/. Database URL: http://www.bamboogdb.org. Source

Li J.,International Center for Bamboo And Rattan
Ying yong sheng tai xue bao = The journal of applied ecology / Zhongguo sheng tai xue xue hui, Zhongguo ke xue yuan Shenyang ying yong sheng tai yan jiu suo zhu ban

A pot experiment was conducted to study the variations of Pleioblastus kongosanensis f. aureostriaus plant morphology, leaf water content (LWC) , leaf water potential (LWP) , photosynthetic parameters, chlorophyll fluorescence parameters, and soil water content (SWC) under natural drought stress, as well as the relationships between these variations and environmental factors. On the 17th day under the stress, the P. kongosanensis presented damaged symptom. Its leaves dehydrated, drooped, and wrap-formed. On the 43rd day, the aboveground part of the plant died from dehydration. When the plant was re-watered for 10 days, the chlorophyll fluorescence parameters had no significant differences with those on the 43rd day under the stress. The SWC decreased significantly in 0-21 d of the stress, and the LWP and LWC dropped rapidly and significantly after 17 d and 29 d, respectively. With the increase of drought stress, the leaf transpiration rate (Tr) and stomatal conductance (g(s)) had a persistent decline, photosynthetic rate (Pn) had a greater fluctuation, and instantaneous water use efficiency (PWUE) decreased after an initial increase. After 17 d drought stress, the limiting factor of Pn was from stomatal to non-stomatal, and the actual photosynthetic efficiency (phiPS II) declined significantly; after 25 d, the photosynthetic organ was damaged, and the maximum photochemical efficiency of PS II (Fv/Fm) and non-photochemical quenching (qN) changed significantly from 0.64 to -0.11 and from 0.79 to 0.33, respectively. The Tr, g(s), and PWUE had close correlations with LWP; the Pn, Tr, and g(s) were sensitive to air relative humidity (RH); and the gs was the main factor causing the diurnal variations of photosynthetic parameters. It was suggested that P. kongosanensis could grow well on the soil with relative moisture content > or = 12% and drought duration less than 25 d. Source

Wang K.,Beijing Forestry University | Yang H.,Beijing Forestry University | Yao X.,International Center for Bamboo And Rattan | Xu F.,Beijing Forestry University | And 2 more authors.
Bioresource Technology

In order to understand the behaviors of hemicelluloses and lignin under the given acidic conditions with increasing severity, the structural characteristics were elucidated in detail by both wet chemistry methods and spectroscopic analyses in this study. Although acidic pretreatment significantly hydrolyzed the glycosidic linkages in xylan backbone and then reduced the molecular weight of xylan from 89,600 to 19,630g/mol, a slightly increased amount of glucuronic acid was observed, probably attributing to the maintenance of ester bonds. The serious structural variation occurred in lignin macromolecule was evidenced by the extensive degradation of β-O-4 ether linkages and resinol substructure, together with the changes in the ratios of the three monolignols in ester-bond, ether-bond and non-condensed phenolic compounds. At the most severity, obvious condensation reactions introduced the clear shift of C 2 and C 5 correlations and the absence of C 6 correlation in guaiacyl units by 2D HSQC analysis. © 2012 Elsevier Ltd. Source

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