Plant responses to arbuscular mycorrhizae under elevated temperature and drought

作     者：Phyllis H.Pischl Nicholas A.Barber 

作者机构：Department of Biological SciencesNorthern Illinois UniversityDeKalbIL 60115USA Institute for the Study of the EnvironmentSustainabilityand EnergyNorthern Illinois UniversityDeKalbIL 60115USA 

出 版 物：《Journal of Plant Ecology》 (植物生态学报（英文版）)

年 卷 期：2017年第10卷第4期

页      面：692-701页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 0901[农学-作物学] 0902[农学-园艺学] 0713[理学-生态学] 

基　　金：This work was supported in part by a Research and Artistry Opportunity Grant from Northern Illinois University 

主　　题：aboveground-belowground arbuscular mycorrhizal fungi climate change drought herbivore indirect effects 

摘      要：Aims Climate change is predicted to cause both increased temperatures and changes in precipitation,leading to more severe droughts in some *** these changes will affect plant growth may depend in part on biotic *** vascular plants form symbiotic rela-tionships with arbuscular mycorrhizal fungi(AMF),root symbionts that provide soil nutrients to plants in exchange for carbohydrates,which may reduce the effects of environmental stresses on *** investigated if AMF modified temperature and drought effects on plant growth,fitness and defenses against *** We manipulated AMF presence,temperature and water availability on bell pepper plants(Capsicum annuum L.)in a field setting to measure plant growth and fitness *** a growth chamber experiment,we also investigated if AMF influenced insect herbi-vores feeding on plants at elevated *** findings Drought consistently reduced plant growth,and AMF did not change drought ***,with sufficient water,AMF tended to benefit plant growth and flower production(but not fruit production)compared to non-mycorrhizal *** the growth chamber,temperature and AMF influenced plant protein and phos-phorus contents,but not defensive chemistry or herbivore ***,AMF may ameliorate the effects of temperature stress due to climate change on plants by increasing growth and nutrient content,but these effects do not extend to the constitutive herbivory defenses examined here.