Does the root to shoot ratio show a hormetic response to stress? An ecological and environmental perspective

作     者：Evgenios Agathokleous Regina G.Belz Mitsutoshi Kitao Takayoshi Koike Edward J.Calabrese 

作者机构：Hokkaido Research CenterForestry and Forest Products Research Institute(FFPRI)Forest Research and Management Organization7 HitsujigaokaSapporoHokkaido 062-8516Japan Research Faculty of AgricultureHokkaido UniversityKita 9 Nishi 9SapporoHokkaido 060-8589Japan Agroecology UnitHans-Ruthenberg InstituteUniversity of HohenheimGarbenstra遝 1370599 StuttgartGermany Department of Environmental Health SciencesMorrill IN344University of MassachusettsAmherstMA 01003USA 

出 版 物：《Journal of Forestry Research》 (林业研究（英文版）)

年 卷 期：2019年第30卷第5期

页      面：1569-1580页

核心收录：

学科分类：09[农学] 

基　　金：supported by JSPS KAKENHI Grant Number JP17F17102 German Research Foundation(BE4189/1-3) the US Air Force [AFOSR FA9550-13-1-0047] Exxon Mobil Foundation [S18200000000256] 

主　　题：Biological plasticity Biphasic response Hormesis Plant stress Root/shoot ratio 

摘      要：Root/shoot(R/S)ratio is an important index for assessing plant health,and has received increased attention in the last decades as a sensitive indicator of plant stress induced by chemical or physical *** R/S ratio has been discussed in the context of ecological theory and its potential importance in ecological succession,where species follow different strategies for above-ground growth for light or below-ground competition for water and *** present evidence showing the R/S ratio follows a biphasic dose–response relationship under stress,typical of *** R/S ratio in response to stress has been widely compared among species and ecological succession *** is constrained by a variety of factors such as ***,the current literature lacks dose-response studies incorporating the full dose–response continuum,hence limiting scientific understanding and possible valuable *** data presented provide an important perspective for new-generation studies that can advance current ecological understanding and improve carbon storage estimates by R/S ratio *** response of the R/S ratio can have an important role in forestry for producing seedlings with desired characteristics to achieve maximum health/productivity and resilience under plantation conditions.