树叶成为微生物的“岛屿”。

Leaves as islands for microbes.

作者信息

Kinkel L L, Andrews J H, Berbee F M, Nordheim E V

机构信息

Department of Plant Pathology, Univeristy of Wisconsin, 53706, Madison, WI, USA.

Departments of Forestry and Statistics, Univeristy of Wisconsin, 53706, Madison, WI, USA.

出版信息

Oecologia. 1987 Feb;71(3):405-408. doi: 10.1007/BF00378714.

DOI:10.1007/BF00378714

PMID:28312988

Abstract

The equilibrium theory of island biogeography provided a framework for describing the colonization of apple leaf 'islands' by filamentous fungi. Surface sterilization of living leaves in situ by hydrogen peroxide allowed the colonization process to be followed from its inception. Numbers of species of filamentous fungi per leaf fluctuated from 6 to 21 during the first 2 weeks of colonization and equilibrated at about 12 by the third week. Turnover occurred in species composition at equilibrium. The equilibrium number of species was not related to leaf area.The presence of an equilibrium condition with turnover on the leaf surfaces is consistent with two key tenets of the theory of island biogeography. However, the apparent back of a species-area relationship is inconsistent with the island model.

摘要

岛屿生物地理学的平衡理论为描述丝状真菌对苹果叶“岛屿”的定殖提供了一个框架。通过过氧化氢对活体叶片进行原位表面消毒，使得定殖过程从一开始就能被追踪。在定殖的前两周，每片叶子上丝状真菌的物种数量从6种波动到21种，并在第三周时稳定在约12种。在平衡状态下，物种组成发生了更替。物种的平衡数量与叶面积无关。叶表面存在具有更替的平衡状态，这与岛屿生物地理学理论的两个关键原则是一致的。然而，明显缺乏物种 - 面积关系与岛屿模型并不一致。