Apoplastic barriers of Populus × canescens roots in reaction to different cultivation conditions and abiotic stress treatments

Abstract Populus is an important tree genus frequently cultivated for economical purposes. However, the high sensitivity of poplars towards water deficit, drought, and salt accumulation significantly affects plant productivity and limits biomass yield. Various cultivation and abiotic stress conditio...

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Main Authors: Paul Grünhofer, Ines Heimerich, Lena Herzig, Svenja Pohl, Lukas Schreiber
Format: Article
Language:English
Published: Springer 2023-07-01
Series:Stress Biology
Subjects:
Online Access:https://doi.org/10.1007/s44154-023-00103-3
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author Paul Grünhofer
Ines Heimerich
Lena Herzig
Svenja Pohl
Lukas Schreiber
author_facet Paul Grünhofer
Ines Heimerich
Lena Herzig
Svenja Pohl
Lukas Schreiber
author_sort Paul Grünhofer
collection DOAJ
description Abstract Populus is an important tree genus frequently cultivated for economical purposes. However, the high sensitivity of poplars towards water deficit, drought, and salt accumulation significantly affects plant productivity and limits biomass yield. Various 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 species. Thus, 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 susceptibility. The 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 species. Overall, dicotyledonous poplar roots showed only a remarkably low induction or enhancement of apoplastic barriers in response to the different cultivation conditions and abiotic stress treatments. The 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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spelling doaj.art-9e972288dd1c4f778d8768f5bf207a692023-07-23T11:07:15ZengSpringerStress Biology2731-04502023-07-013111410.1007/s44154-023-00103-3Apoplastic barriers of Populus × canescens roots in reaction to different cultivation conditions and abiotic stress treatmentsPaul Grünhofer0Ines Heimerich1Lena Herzig2Svenja Pohl3Lukas Schreiber4Department of Ecophysiology, Institute of Cellular and Molecular Botany, University of BonnDepartment of Ecophysiology, Institute of Cellular and Molecular Botany, University of BonnDepartment of Ecophysiology, Institute of Cellular and Molecular Botany, University of BonnDepartment of Ecophysiology, Institute of Cellular and Molecular Botany, University of BonnDepartment of Ecophysiology, Institute of Cellular and Molecular Botany, University of BonnAbstract Populus is an important tree genus frequently cultivated for economical purposes. However, the high sensitivity of poplars towards water deficit, drought, and salt accumulation significantly affects plant productivity and limits biomass yield. Various 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 species. Thus, 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 susceptibility. The 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 species. Overall, dicotyledonous poplar roots showed only a remarkably low induction or enhancement of apoplastic barriers in response to the different cultivation conditions and abiotic stress treatments. The 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.https://doi.org/10.1007/s44154-023-00103-3HydroponicsAeroponicsSoilAbscisic acid (ABA)Oxygen deficiencyPoplar root suberin
spellingShingle Paul Grünhofer
Ines Heimerich
Lena Herzig
Svenja Pohl
Lukas Schreiber
Apoplastic barriers of Populus × canescens roots in reaction to different cultivation conditions and abiotic stress treatments
Stress Biology
Hydroponics
Aeroponics
Soil
Abscisic acid (ABA)
Oxygen deficiency
Poplar root suberin
title Apoplastic barriers of Populus × canescens roots in reaction to different cultivation conditions and abiotic stress treatments
title_full Apoplastic barriers of Populus × canescens roots in reaction to different cultivation conditions and abiotic stress treatments
title_fullStr Apoplastic barriers of Populus × canescens roots in reaction to different cultivation conditions and abiotic stress treatments
title_full_unstemmed Apoplastic barriers of Populus × canescens roots in reaction to different cultivation conditions and abiotic stress treatments
title_short Apoplastic barriers of Populus × canescens roots in reaction to different cultivation conditions and abiotic stress treatments
title_sort apoplastic barriers of populus canescens roots in reaction to different cultivation conditions and abiotic stress treatments
topic Hydroponics
Aeroponics
Soil
Abscisic acid (ABA)
Oxygen deficiency
Poplar root suberin
url https://doi.org/10.1007/s44154-023-00103-3
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