...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Biological Journal of the Linnean Society >The pathways of water movement in leaves modified into tents by bats
【24h】

The pathways of water movement in leaves modified into tents by bats

机译：蝙蝠将水移动到帐篷中的运动途径

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A number of species of bats modify leaves into tents, which they use as roost-sites. Through this process, some areas of the leaf lamina are damaged or become detached from the midrib. Such injuries do not cause death of the leaf or the detached areas, indicating that water supply to these areas must be maintained. We examined the anatomy of the vascular systems and water transport in the leaves of three species of plants: Heliconia pogonantha L., Manicaria plukenetii Griseb. & H. Wendl., and Cryosophila warcsewiczii (H. Wend.) Bartlett. In altered leaves of all three species, detached areas of the laminae were supplied with water by minor transverse veins branching from the first major parallel vein that remained intact next to the cut. These transverse veins conducted water through single xylem elements of narrow diameter (approximately 10 mum) previously thought to supply water only to mesophyll cells in their immediate vicinity. The short lengths of these veins compensates their high resistance to water now (a consequence of their small diameter xylem elements), indicating that small transverse veins have a large capacity for water transport. Water typically flowed through transverse veins into detached major and minor parallel veins, filled these parallel veins in both directions (i.e. toward the midrib and the leaf edge), and continued on into subsequent transverse and parallel veins, thereby supplying water to the entire leaf. Water conduction through these small transverse veins could support large areas of leaf lamina, keeping the leaf-tent alive for at least several months. The maintenance of the now of water and nutrients to areas of leaves detached by bats during the tent-making process increases the longevity and decreases the conspicuousness of leaf-tents, and is likely a key factor in the success of this roosting strategy.
机译：许多种类的蝙蝠将叶子改成帐篷，它们用作栖息地。通过此过程，叶片叶片的某些区域被破坏或从中脉脱离。这样的伤害不会导致叶片或分离区域的死亡，这表明必须保持对这些区域的供水。我们检查了三种植物的叶子中的血管系统和水运输的解剖结构：Heliconia pogonantha L.，Manicaria plukenetii Griseb。 ＆H. Wendl。和Cryosophila warcsewiczii（H. Wend。）Bartlett。在所有这三种物种的变叶中，通过从第一条主要平行静脉分支出来的次要横向脉管向叶片的离合区域供水，该横向脉管在切口旁保持完整。这些横向静脉通过狭窄直径（大约10微米）的单个木质部元件引导水流，以前这些木质部元件仅向附近的叶肉细胞供水。这些静脉的短长度弥补了它们现在对水的高抵抗力（由于其小直径木质部元素的结果），这表明小的横向静脉具有大的水传输能力。水通常通过横向静脉流入分离的主，次平行静脉中，并在两个方向（即朝着中脉和叶边缘）填充这些平行静脉，然后继续进入随后的横向和平行静脉中，从而为整个叶子供水。通过这些小的横向静脉的水传导可以支撑大面积的叶片，使叶片帐篷至少存活几个月。在帐篷制作过程中维持水和养分到蝙蝠脱落的叶子区域，可以增加寿命，减少叶子帐篷的显眼性，这很可能是该栖息策略成功的关键因素。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号