Apoplastic barriers of Populus×canescens roots in reaction to different cultivation conditions and abiotic stress treatments
作者机构：Department of EcophysiologyInstitute of Cellular and Molecular BotanyUniversity of BonnKirschallee 153115 BonnGermany
出 版 物：《Stress Biology》 (逆境生物学（英文）)
年 卷 期：2023年第3卷第1期
页 面：269-282页
学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学]
基 金：Funding by the Deutsche Forschungsgemeinschaft(DFG,German Research Foundation SCHR17/1 Project Number 391657309)is gratefully acknowledged
主 题：Hydroponics Aeroponics Soil Abscisic acid(ABA) Oxygen deficiency Poplar root suberin
摘 要：Populus is an important tree genus frequently cultivated for economical ***,the high sensitivity of poplars towards water deficit,drought,and salt accumulation significantly affects plant productivity and limits biomass *** cultivation and abiotic stress conditions have been described to significantly induce the formation of apoplastic barriers(Casparian bands and suberin lamellae)in roots of different monocotyledonous crop ***,this study aimed to investigate to which degree the roots of the dicotyledonous gray poplar(Populus×canescens)react to a set of selected cultivation conditions(hydroponics,aeroponics,or soil)and abiotic stress treatments(abscisic acid,oxygen deficiency)because a differing stress response could potentially help in explaining the observed higher stress *** apoplastic barriers of poplar roots cultivated in different environments were analyzed by means of histochemistry and gas chromatography and compared to the available literature on monocotyledonous crop ***,dicotyledonous poplar roots showed only a remarkably low induction or enhancement of apoplastic barriers in response to the different cultivation conditions and abiotic stress *** genetic optimization(e.g.,overexpression of biosynthesis key genes)of the apoplastic barrier development in poplar roots might result in more stress-tolerant cultivars in the future.
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