Cell wall evolution and diversity.

Cell wall evolution and diversity.
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DOI:
10.3389/fpls.2012.00152
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发表时间:
2012
影响因子:
5.6
通讯作者:
Willats WG
Willats WG
中科院分区:
生物学2区
文献类型:
--
作者:
Fangel JU;Ulvskov P;Knox JP;Mikkelsen MD;Harholt J;Popper ZA;Willats WG

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植物细胞壁在组成和分子结构上表现出相当程度的多样性。在某些情况下,特定细胞壁类型的功能意义似乎很容易辨别:次生细胞壁通常用木质素增强,提供耐久性;花粉管的薄细胞壁具有使其尖端生长的特定成分;羽扇豆种子细胞壁特征性地用半乳聚糖作为储存多糖增厚。然而,更常见的是,支持细胞壁多样性和进化的进化机制和选择压力尚不清楚。对于不同的绿色植物(绿藻和链霉菌),转录组和基因组数据集的快速增加的可用性、用于细胞壁分析的方法的发展(其需要较少的材料用于分析)以及分子探针集的扩展,提供了对细胞壁多糖和相关生物合成基因的多样性和发生的新见解。这些研究对于完善我们对一些基本过程的理解非常重要,这些基本过程使植物能够在陆地上定居并随后如此全面地辐射。细胞壁结构多样性的研究也是全球多糖生物资源工业化利用的一个重要方面。
Plant cell walls display a considerable degree of diversity in their compositions and molecular architectures. In some cases the functional significance of a particular cell wall type appears to be easy to discern: secondary cells walls are often reinforced with lignin that provides durability; the thin cell walls of pollen tubes have particular compositions that enable their tip growth; lupin seed cell walls are characteristically thickened with galactan used as a storage polysaccharide. However, more frequently the evolutionary mechanisms and selection pressures that underpin cell wall diversity and evolution are unclear. For diverse green plants (chlorophytes and streptophytes) the rapidly increasing availability of transcriptome and genome data sets, the development of methods for cell wall analyses which require less material for analysis, and expansion of molecular probe sets, are providing new insights into the diversity and occurrence of cell wall polysaccharides and associated biosynthetic genes. Such research is important for refining our understanding of some of the fundamental processes that enabled plants to colonize land and to subsequently radiate so comprehensively. The study of cell wall structural diversity is also an important aspect of the industrial utilization of global polysaccharide bio-resources.
植物糖基转移酶超越了Cazy:对DUF家族的观点。
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影响因子: 5.6
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