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Yu Liyang,Wang Dongsheng,Huang Ruimin,Cao Fei,Guo Chunlei,Zhang Jingzheng 한국식물생명공학회 2024 Plant biotechnology reports Vol.18 No.1
The B-box (BBX) proteins are a class of zinc finger transcription factors and play critical roles in plant development and growth. However, they have not been systematically characterized in Chinese chestnut (Castanea mollissima), an important nut with rich nutrition and high economic value. Here, 18 BBX genes were identified in Chinese chestnut genome and divided into five groups through phylogenetic analysis, with members in the same group containing the same conserved domain organization. The collinearity analysis showed that dispersed duplication played a major role in the expansion of CmBBX gene family inferred to have evolved through purifying selection. Transcriptome analysis and qRT-PCR experiments suggested that CmBBX genes showed different expression patterns in different Chinese chestnut tissues, and revealed some CmBBXs may have potential functions in the development of Chinese chestnut buds, nuts, fertile/abortive ovules. Combined with the analysis of conserved domain, motif, cis-elements, expression level and protein three-dimensional structure, the lack of cis- acting elements related to meristem expression and gibberellin-responsiveness may lead to the no-expression of CmBBX9 in Chinese chestnut. The systematic analysis of Chinese chestnut BBX genes provides a basis for further understanding the characteristics and potential functions of BBX gene family.
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Adaptive-and-Resolvable Fractional Repetition Codes Based on Hypergraph
Tiantian Wang,Jing Wang,Haipeng Wang,Jie Meng,Chunlei Yu,Shuxia Wang 한국인터넷정보학회 2023 KSII Transactions on Internet and Information Syst Vol.17 No.4
Fractional repetition (FR) codes can achieve exact uncoded repair for multiple failed nodes, with lower computational complexity and bandwidth overhead, and effectively improve repair performance in distributed storage systems (DSS). The actual distributed storage system is dynamic, that is, the parameters such as node storage overhead and number of storage nodes will change randomly and dynamically. Considering that traditional FR codes cannot be flexibly applied to dynamic distributed storage systems, a new construction scheme of adaptive-and-resolvable FR codes based on hypergraph coloring is proposed in this paper. Specifically, the linear uniform regular hypergraph can be constructed based on the heuristic algorithm of hypergraph coloring proposed in this paper. Then edges and vertices in hypergraph correspond to nodes and coded packets of FR codes respectively, further, FR codes is constructed. According to hypergraph coloring, the FR codes can achieve rapid repair for multiple failed nodes. Further, FR codes based on hypergraph coloring can be generalized to heterogeneous distributed storage systems. Compared with Reed-Solomon (RS) codes, simple regenerating codes (SRC) and locally repairable codes (LRC), adaptive-and-resolvable FR codes have significant advantages over repair locality, repair bandwidth overhead, computational complexity and time overhead during repairing failed nodes.
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