Enhancement of growth and cellulose accumulation by overexpression of xyloglucanase in poplar
Enhancement of growth and cellulose accumulation by overexpression of xyloglucanase in poplar
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DOI：
10.1016/s0014-5793(04)00346-1
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发表时间：
2004-04-23
期刊：
影响因子：
3.5
通讯作者：
Hayashi, T
中科院分区：
文献类型：
--
作者：
Park, YW;Baba, K;Hayashi, T
因为细胞壁中木葡聚糖的松弛促进植物生长(Takeda et al. (2002) Proc. Natl. Acad. Sci. USA 99, 9055-9060；Park et al. (2003) Plant J. 33, 10991106)，我们在白杨中组成型表达曲霉木葡聚糖酶。即使在蔗糖存在下，该表达也增加了茎的长度。茎生长的增加伴随着生长区杨氏弹性模量的降低，但成熟组织的弹性增加。节间长度的增加对应于纤维素含量和比重的增加，表明木葡聚糖的去除可能导致次生木质部中纤维素密度的增加。 (C) 2003 年欧洲生化学会联合会。由 Elsevier B.V. 出版。保留所有权利。
Because the loosening of xyloglucan in the cell wall promotes plant growth (Takeda et al. (2002) Proc. Natl. Acad. Sci. USA 99, 9055-9060; Park et al. (2003) Plant J. 33, 10991106), we expressed Aspergillus xyloglucanase constitutively in Populus alba. The expression increased the length of stem even in the presence of sucrose. Increased stem growth was accompanied by a decrease in Young's elastic modulus in the growth zone but an increased elasticity in mature tissue. The increased internode length corresponded to an increase in cellulose content as well as specific gravity, showing that the removal of xyloglucan might cause an increase in cellulose density in the secondary xylem. (C) 2003 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.