An Effort of Furniture Design Development through the Utilization of Rice Straw Gogo Red Rice Slegreng Variety

Rice is a staple food source and therefore widely planted by farmers. Straw is a residual waste of rice harvests which has not been utilized optimally. This residual waste can be used in semi-finished products and finished products, especially crafts and furniture for the export market. This study considers the use of waste straw for the needs of the handicraft industry and mining. The second objective is furniture and craft design innovation using a straw. Experiments were carried out by twisting straw so that it becomes a certain diameter and length. The upland variety of slegereng red rice straw was the research object owing to its greater length and hgher strength than other types. Data was derived from literature and informants, and evaluated using interactive analysis models, including data reduction, data display and data verification. The study demonstrates that waste straw can be used in furniture and craft product design innovations. The application is on chairs, tables, stools, tissue boxes, table lamps, frames and so on. Keywords: Straw, design, furniture

Proteomics to identify pathogenesis-related proteins in rice roots under water deficit

Upland and lowland rice (Oryza sativa L.) showed different mechanisms of water stress resistance. Hydroponically grown 3-week-old seedlings of a lowland variety IR64 and an upland variety were exposed to 15% polyethylene glycol (PEG-6000). After 7 d of treatment, IR64 maintained high relative water content and developed a well-branched root. Therefore, IR64 had better water-deficit tolerance than Azucena under PEG treatment. To identify water-deficit-responsive proteins associated with the tolerance differences between two ecotypes, a comparative proteomic analysis of roots was conducted. Out of 700 proteins reproducibly detected on two-dimensional electrophoresis gels, 65 proteins exhibited significant changes in at least one ecotype at 48 h of water deficit. Only 15 proteins showed different responses to water deficit between the two ecotypes. Twelve proteins were identified by matrix-assisted laser desorption/ionization-time of flight/time of flight-mass spectrometry, which involved in energy and metabolism, protein processing and degradation, detoxification and pathogenrelated (PR) proteins, i.e. PR-1a, RSOsPR10 and JIOsPR10. All three PR proteins were induced more strongly in IR64 than in Azucena by water deficit at both protein and mRNA level. The results suggested that PR-1a, RSOsPR10 and JIOsPR10 may play important roles in protecting root cells against water deficit in rice.