Structural characteristics of cell walls of kenaf (Hibiscus cannabinus L.) and fixation of carbon dioxide
Structural characteristics of cell walls of kenaf (Hibiscus cannabinus L.) and fixation of carbon dioxide
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DOI：
10.1007/s10086-002-0469-7
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发表时间：
2003-01-01
影响因子：
2.9
通讯作者：
Iiyama, K
中科院分区：
文献类型：
--
作者：
Lam, TBT;Hori, K;Iiyama, K
红麻（Hibiscus cannabinus）植物因其对全球和区域环境的贡献而广为人知，因为它们具有固定CO2的能力。另一方面，一些科学家对红麻的CO2固定能力表示怀疑，并对红麻对生态系统的影响表示担忧。本文研究了红麻成熟过程中韧皮纤维、芯、根和叶的细胞壁结构特征，并对红麻的光合速率进行了研究。在红麻成熟过程中，纤维素（韧皮纤维52- 59%，芯44-46%）和木质素（韧皮纤维9.3- 13.2%，芯18.3-23.2%）含量显著增加。韧皮部木质素的芳香族组成与芯部木质素及其它植物木质素的芳香族组成有显著差异。韧皮纤维中的木质素与纯的辛烯基木质素相似。讨论了红麻植物对CO2的固定及其对全球环境的贡献。在日本，红麻植物的光合速率显著高于木本植物。但固定CO2的量取决于种植园的特性。如果红麻高密度种植。大约是热带雨林树木固定的二氧化碳的两倍。
Kenaf (Hibiscus cannabinus) plants are widely known for their contribution to the global and regional environment because of their ability to fix CO2. On the other hand, some scientists have doubts about CO2 fixation by kenaf and have misgivings about the effect of kenaf on the ecosystem. We have characterized the structural characteristics of cell walls of bast fibers, cores, roots, and leaves of kenaf during the maturation of plants and investigated the rate of photosynthesis. During maturation of the kenaf plant the cellulose (bast fiber 52-59%, core 44-46%) and lignin (bast fiber 9.3-13.2%, core 18.3-23.2%) contents increased significantly. The aromatic composition of the lignin of bast fiber was significantly different from that of the core lignin and of other plants. The lignin of bast fiber appears similar to pure syringyl lignin. Fixation of CO2 by kenaf plants and their contribution to the global environment are discussed. A significatly high rate of photosynthesis of kenaf plants was observed compared to that of woody plants in Japan. but the amount of CO2 fixation depends on the characteristics of the plantation. If the kenaf was planted in high density. about twice as much CO2 was fixed as was fixed by trees in a tropical rain forest.