Integration and scaling of UV-B radiation effects on plants: the relative sensitivity of growth forms and interspecies interactions

作     者：Vasile Alexandru Suchar Ronald Robberecht 

作者机构：Department of Statistical ScienceCollege of ScienceUniversity of Idaho875 Perimeter Drive MS1104MoscowID 83844-1104USA Department of ForestRangelandand Fire SciencesCollege of Natural ResourcesUniversity of Idaho875 Perimeter Drive MS1133MoscowID 83844-1133USA 

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

年 卷 期：2018年第11卷第4期

页      面：656-670页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学] 

基　　金：supported in part by the NSF Idaho EPSCoR Program and by the National Science Foundation under award number 

主　　题：UV-B radiation effects plant growth and development simulation modeling relative sensitivity competition 

摘      要：Aims the relative plant type sensitivity and selected community interac-tions under increased UV-B radiation where ***,we investigated:(i)if there are differences among growth forms in regard to their sensitivity to UV-B radiation,(ii)if increased UV-B radiation influences the plant competitive balance in plant com-munities and(iii)the response mechanisms of the UV-B radiation-sensitive species that might increase their *** to answer our research questions,we used a mechanistic model that,for the first time,integrated the effects of increased UV-B radia-tion from molecular level processes,whole plant growth and devel-opment,and community *** Findings In the model simulations,species types exhibited different levels of sensitivity to increased UV-B *** C3 and C4 annuals showed similar growth inhibition rates,while biennials and winter C3 annuals were the most *** exhibited inhibitions in growth only if increased UV-B radiation results in increases in metabolic *** communities,species sensitive to UV-B radiation may have a competitive disadvantage compared to resistant plant ***,sensitive species may have a wide array of responses that can increase their fitness and reproductive success in the com-munity,such as,increased secondary metabolites production,changes in timing of emergence and reproduction,and changes in seed *** individual plants may exhibit significant inhibi-tions in growth and development,in communities,these inhibitions can be mitigated by small morphological and physiological *** or occasional increased UV-B radiation events should not have any lasting effect on the structure of the commu-nity,unless other environmental factors are perturbing the dynamic equilibrium.