RELATIONSHIP BETWEEN AN EPIPHYLLOUS LIVERWORT AND HOST LEAVES
RELATIONSHIP BETWEEN AN EPIPHYLLOUS LIVERWORT AND HOST LEAVES
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DOI：
10.1093/oxfordjournals.aob.a085014
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发表时间：
1975-01-01
期刊：
影响因子：
4.2
通讯作者：
EZE, JMO
中科院分区：
文献类型：
--
作者：
BERRIE, GK;EZE, JMO
对叶生苔类植物扁齿舌与叶生苔的结构和生理关系进行了研究。et G.，和各种各样的寄主叶子。叶缘假根分泌的粘性分泌物有助于叶缘与寄主叶的最初附着。一些假根随后穿透叶角质层并侵入表皮细胞之间。渗透导致一些表皮细胞死亡，假根也通过由此产生的间隙进入。成熟的叶上菌落的存在与叶片蒸发水分损失的增加密切相关。机械剥叶的叶子也显示出同样高的失水率。结果表明，水和溶解的放射性磷酸盐（盐）可以从寄主叶组织进入叶上，因此，传统的术语认为，叶上柔枝锈病菌是一种半寄生菌，而不是一种简单的附生植物。一些其他方面的关系进行了讨论。
An investigation was carried out into certain aspects of the structural and physiological relationships between an epiphyllous liverwort,Radula flaccidaLbg. et G., and a variety of host leaves. Initial attachment of the epiphylla to the host leaf is aided by an adhesive secretion from the rhizoids of the epiphylla. Some rhizoids subsequently penetrate the leaf cuticle and intrude between epidermal cells. Penetration results in the death of some epidermal cells and rhizoids enter also through the gaps thus created.The presence of well-established epiphyllous colonies was closely associated with increased loss of water from leaves by evaporation. Leaves mechanically stripped of their epiphyllae showed a similarly high rate of water loss. It was shown that water and dissolved radioactive phosphate (salts) can pass from host leaf tissues into the epiphylla.It is concluded that, in traditional terminology, epiphyllousR.flaccidais a semi-parasite rather than a simple epiphyte. Some other aspects of the relationship are discussed.