Living wood fibers act as large-capacity "single-use" starch storage in black locust(Robinia pseudo acacia).
Living wood fibers act as large-capacity "single-use" starch storage in black locust(Robinia pseudo acacia).
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活木纤维在刺槐（刺槐）中充当大容量“一次性”淀粉储存库。
DOI：
10.1007/s00468-010-0537-3
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发表时间：
2011
影响因子：
2.3
通讯作者：
Takabe K
中科院分区：
文献类型：
--
作者：
Yamada Y;Awano T;Fujita M;Takabe K
活木纤维（LWF）是保留活原生质体的纤维。 LWF 在休眠期间储存大量淀粉粒。在刺槐（刺槐）中，年轮外部的几乎所有木纤维都是 LWF。在最外层的环中，淀粉在夏季积累，在冬季保留，并在春季代谢。我们使用图像分析确定了 LWF、射线薄壁组织和轴向薄壁组织的淀粉含量。最外环70%以上的淀粉粒在冬季储存在LWF中。春季淀粉分解后，LWF 导致细胞死亡。这些结果表明刺槐中的LWF具有“一次性”大容量淀粉储存功能。
A living wood fiber (LWF) is one that retains the living protoplast. LWFs store numerous starch grains during the dormant period. In black locust (Robinia pseudoacacia), almost all wood fibers in the outer part of the annual ring are LWFs. In the outermost ring, starch is accumulated during the summer, retained in winter, and metabolized during spring. We determined the starch content of LWFs, ray parenchyma, and axial parenchyma using image analysis. More than 70% of the starch grains in the outermost ring were stored in LWFs during winter. After the breakdown of starch in spring, LWFs resulted in cell death. These results indicate that LWFs in black locust function as “single-use” large-capacity starch storage.