Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1073/pnas.0804294105 |
Hydraulic integration and shrub growth form linked across continental aridity gradients | |
Schenk, H. Jochen1; Espino, Susana1; Goedhart, Christine M.1; Nordenstahl, Marisa2; Cabrera, Hugo I. Martinez3; Jones, Cynthia S.3 | |
通讯作者 | Schenk, H. Jochen |
来源期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
![]() |
ISSN | 0027-8424 |
出版年 | 2008 |
卷号 | 105期号:32页码:11248-11253 |
英文摘要 | Both engineered hydraulic systems and plant hydraulic systems are protected against failure by resistance, reparability, and redundancy. A basic rule of reliability engineering is that the level of independent redundancy should increase with increasing risk of fatal system failure. Here we show that hydraulic systems of plants function as predicted by this engineering rule. Hydraulic systems of shrubs sampled along two transcontinental aridity gradients changed with increasing aridity from highly integrated to independently redundant modular designs. Shrubs in humid environments tend to be hydraulically integrated, with single, round basal stems, whereas dryland shrubs typically have modular hydraulic systems and multiple, segmented basal stems. Modularity is achieved anatomically at the vessel-network scale or developmentally at the whole-plant scale through asymmetric secondary growth, which results in a semiclonal or clonal shrub growth form that appears to be ubiquitous in global deserts. |
英文关键词 | plant hydraulic systems wood anatomy hydraulic redundancy xylem structure and function |
类型 | Article |
语种 | 英语 |
国家 | USA ; Argentina |
收录类别 | SCI-E |
WOS记录号 | WOS:000258560700040 |
WOS关键词 | GRAY PAYNE ASTERACEAE ; FALSE DISCOVERY RATE ; CAVITATION RESISTANCE ; TEMPERATE TREE ; WATER-MOVEMENT ; PHYLOGENY ; VESSELS ; SAFETY ; SECTORIALITY ; EFFICIENCY |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/158922 |
作者单位 | 1.Calif State Univ Fullerton, Dept Biol Sci, Fullerton, CA 92834 USA; 2.Univ Buenos Aires, Fac Agron, Buenos Aires, DF, Argentina; 3.Univ Connecticut, Dept Ecol & Evolut Biol, Storrs, CT 06269 USA |
推荐引用方式 GB/T 7714 | Schenk, H. Jochen,Espino, Susana,Goedhart, Christine M.,et al. Hydraulic integration and shrub growth form linked across continental aridity gradients[J],2008,105(32):11248-11253. |
APA | Schenk, H. Jochen,Espino, Susana,Goedhart, Christine M.,Nordenstahl, Marisa,Cabrera, Hugo I. Martinez,&Jones, Cynthia S..(2008).Hydraulic integration and shrub growth form linked across continental aridity gradients.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,105(32),11248-11253. |
MLA | Schenk, H. Jochen,et al."Hydraulic integration and shrub growth form linked across continental aridity gradients".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 105.32(2008):11248-11253. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。