Does suberin accumulation in plant roots contribute to waterlogging tolerance?
Does suberin accumulation in plant roots contribute to waterlogging tolerance?
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DOI：
10.3389/fpls.2013.00178
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发表时间：
2013
影响因子：
5.6
通讯作者：
Nakazono M
中科院分区：
文献类型：
--
作者：
Watanabe K;Nishiuchi S;Kulichikhin K;Nakazono M
适应涝渍条件的植物在根上发育通气组织，用于通风。一些湿地植物还在根的外层细胞层形成外胞质屏障，减少来自通气组织的径向氧损失（ROL），阻止有毒化合物进入根。胞外屏障的组成尚不清楚。一种潜在的成分是亚木质素，它在浸水土壤条件下或对其他环境刺激的反应中积累在根的下表皮/外表皮细胞层。然而，由于不同植物种类间木素含量和组成的差异，很难评估木素是否具有预防ROL的作用。在这篇文章中，我们总结了根系外胞体屏障形成的最新进展，并在不同植物物种之间比较了外胞体屏障的化学成分与它们对氧的渗透性的关系。此外，还讨论了木栓素积累与ROL屏障之间的关系。
Plants that are adapted to waterlogged conditions develop aerenchyma in roots for ventilation. Some wetland plant species also form an apoplastic barrier at the outer cell layers of roots that reduces radial oxygen loss (ROL) from the aerenchyma and prevents toxic compounds from entering the root. The composition of the apoplastic barrier is not well understood. One potential component is suberin, which accumulates at the hypodermal/exodermal cell layers of the roots under waterlogged soil conditions or in response to other environmental stimuli. However, differences in suberin content and composition between plant species make it difficult to evaluate whether suberin has a role in preventing ROL. In this article, we summarize recent advances in understanding apoplastic barrier formation in roots and, between various plant species, compare the chemical compositions of the apoplastic barriers in relation to their permeability to oxygen. Moreover, the relationship between suberin accumulation and the barrier to ROL is discussed.
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影响因子：
4.2
作者：
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通讯作者：
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