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首页> 外文期刊>IAWA Journal >The effect of mistletoe (Viscum album) on branch wood and needle anatomy of Scots pine (Punts sylvestris)
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The effect of mistletoe (Viscum album) on branch wood and needle anatomy of Scots pine (Punts sylvestris)

机译：Mistletoe（Viscum册）对苏格兰松树木材和针解剖学的影响（Punts Sylvestris）

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Mistletoes are hemi-parasitic plants growing on many tree species. They grow on the tree branches or trunk of a tree and form root-like structures called haustoria that penetrate into the tree, taking up water and mineral nutrients. Mistletoe is capable of causing a variety of effects to its hosts, including changes in wood formation and leaf development. We investigate and discuss the effects of pine mistletoe (Viscum album ssp. austriacum, Santalaceae) on branch wood and needle anatomy of Scots pine (Pinus sylvestris, Pinaccae). Parasitized and non-parasitized branches of Scots pine were sampled from host tree crowns of trees growing on the same site. Branches were taken from mid-crown facing south. They were cut at 2 cm proximal and 2 cm distal to the mistletoe on each host branch and at the corresponding position in the case of uninfected branches from the same host. The wood anatomy at proximal and distal parts and the parts at the corresponding position in the non-parasitized section was compared. The anatomy of one-year-old needles from both parasitized and non-parasitized branches was also compared. Mistletoe had significant influences on wood and needle anatomy. The major changes were the decreases in the double wall thickness, lumen area, tangential lumen area and radial lumen area of the tracheids in the wood and a decrease in vascular area in the needles. These results help to understand how mistletoe acts on its host.
机译：槲寄生是在许多树种上生长的半寄生植物。它们在树枝或树干上生长，形成叫做Haustoria的根状结构，渗透到树上，占用水和矿物质营养。槲寄生能够对其宿主产生各种影响，包括木材形成和叶片发育的变化。我们调查并讨论松槲寄生（Viscum专辑SSP。Austriacum，Santalaceae）在苏格兰杉木（Pinus Sylvestris，Pinaccae）的枝木和针解剖学上的影响。苏格兰松树的寄生和非寄生的分支被从同一部位生长的宿主树冠上取样。分支从南部面对中冠取出。它们在每个主机分支上的槲寄生近端和2cm的近端和2cm的近端切割，并且在来自同一主机的未感染分支的情况下相应的位置处。比较了近端和远端部件的木解剖学和在非寄生段中的相应位置处的零件。还比较了寄生和非寄生分支的一岁针的解剖学。槲寄生对木头和针头解剖有重大影响。主要的变化是木材厚度，腔面积，切向腔面积和木材中躯干的径向腔面积的减少，针对针中的血管区域减少。这些结果有助于了解Mistletoe如何在其主机上行使。

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