BRITTLE CULM16 (BRITTLE NODE) is required for the formation of secondary cell walls in rice nodes
Autor: | Xin Zhang, Saihua Chen, Long Zhang, Cailin Lei, Ming Ming, Kunneng Zhou, Jiulin Wang, Fu-qing Wu, Jianmin Wan, Xiaoming Yang, Qibing Lin, Xiuping Guo, Ying Wang, Zhijun Cheng, Ren Yulong |
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Rok vydání: | 2017 |
Předmět: |
0106 biological sciences
0301 basic medicine Agriculture (General) Mutant Locus (genetics) Plant Science Biology sclerenchyma tissue 01 natural sciences Biochemistry S1-972 Cell wall 03 medical and health sciences chemistry.chemical_compound Brittleness Food Animals Botany Lignin brittle node Oryza sativa Ecology food and beverages Phenotype Cell biology 030104 developmental biology chemistry Animal Science and Zoology rice (Oryza sativa L.) secondary cell wall Agronomy and Crop Science Secondary cell wall 010606 plant biology & botany Food Science |
Zdroj: | Journal of Integrative Agriculture, Vol 16, Iss 6, Pp 1286-1293 (2017) |
ISSN: | 2095-3119 |
Popis: | Plant cell walls constitute the skeletal structures of plant bodies, and thus confer lodging resistance for grain crops. While the basic cell wall synthesis machinery is relatively well established now, our understanding of how the process is regulated remains limited and fragmented. In this study, we report the identification and characterization of the novel rice (Oryza sativa L.) brittle culm16 (brittle node; bc16) mutant. The brittle node phenotype of the bc16 mutant appears exclusively at nodes, and resembles the previously reported bc5 mutant. Combined histochemical staining and electron microscopy assays revealed that in the bc16 mutant, the secondary cell wall formation and thickening of node sclerenchyma tissues are seriously affected after heading. Furthermore, cell wall composition assays revealed that the bc16 mutation led to a significant reduction in cellulose and lignin contents. Using a map-based cloning approach, the bc16 locus is mapped to an approximately 1.7-Mb region of chromosome 4. Together, our findings strengthen evidence for discretely spatial differences in the secondary cell wall formation within plant bodies. |
Databáze: | OpenAIRE |
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