The Influence of Steep Slopes on Root System Development

被引：96

作者：

Donato Chiatante ^{[1
]}

Stefania G. Scippa ^{[2
]}

Antonino Di Iorio ^{[2
]}

Maria Sarnataro ^{[2
]}

机构：

[1] Università degli Studi dell'Insubria,Dipartimento di Scienze Chimiche,Fisiche e Matematiche, Dipartimento di Biologia Strutturale e Funzionale

[2] via Valleggio 11,Dipartimento di Scienze e Tecnologie per l'Ambiente ed il Territorio

[3] 22100 Como,undefined

[4] Università degli Studi del Molise,undefined

[5] Via Mazzini 8,undefined

[6] 86170 Isernia,undefined

来源：

Journal of Plant Growth Regulation | 2002年 / 21卷 / 4期

关键词：

Root System; Lateral Root; Root Trait; Tension Wood; Root System Architecture;

D O I：

10.1007/s00344-003-0012-0

中图分类号：

学科分类号：

摘要：

Mechanical forces active on steep slopes tend to overturn plants, which respond by developing a specific asymmetrical architecture in the root system. This asymmetric architecture is the consequence of preferential lateral root emergence and elongation in the up-slope and down-slope directions. Root systems show a normal symmetrical architecture when the same species is grown on plane soil. The asymmetrical root architecture on steep slopes seems to increase the plant's stability by modifying the distribution of mechanical forces into the soil. This hypothesis is supported by the observation that lateral roots developing in the up-slope or down-slope directions present considerable anatomical modifications in shape and tissue-organization compared with lateral roots from plants growing on plane soil.

引用

页码：247 / 260

页数：13

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