Cargando…

PagERF16 of Populus Promotes Lateral Root Proliferation and Sensitizes to Salt Stress

The aggravation of soil salinization limits the growth and development of plants. The AP2/ERF transcription factors (TFs) have been identified and play essential roles in plant development and stress response processes. In this study, the function of PagERF16 was detected using the overexpressing (O...

Descripción completa

Detalles Bibliográficos
Autores principales: Wang, Shengji, Huang, Juanjuan, Wang, Xingdou, Fan, Yan, Liu, Qiang, Han, Youzhi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8213033/
https://www.ncbi.nlm.nih.gov/pubmed/34149765
http://dx.doi.org/10.3389/fpls.2021.669143
_version_ 1783709753755566080
author Wang, Shengji
Huang, Juanjuan
Wang, Xingdou
Fan, Yan
Liu, Qiang
Han, Youzhi
author_facet Wang, Shengji
Huang, Juanjuan
Wang, Xingdou
Fan, Yan
Liu, Qiang
Han, Youzhi
author_sort Wang, Shengji
collection PubMed
description The aggravation of soil salinization limits the growth and development of plants. The AP2/ERF transcription factors (TFs) have been identified and play essential roles in plant development and stress response processes. In this study, the function of PagERF16 was detected using the overexpressing (OX) and RNAi transgenic poplar 84K hybrids. Plant growth, stomatal conductance, antioxidant enzymes activity, and PagERF16 co-expressed TFs were analyzed using morphological, physiological, and molecular methods. OX showed a more robust lateral root system with a bigger diameter and volume compared to the wild-type plants (WT). Physiological parameters indicated the bigger stomatal aperture and lower stomatal density of OX along with the lower Catalase (CAT) activity and higher malondialdehyde (MDA) content contributed to the salt sensitivity. The plant height and rooting rate of OX and RNAi were significantly worse compared to WT. Other than that, the morphology and physiology of RNAi plants were similar to WTs, suggesting that the function of PagERF16 may be redundant with other TFs. Our results indicate that when PagERF16 expression is either too high or too low, poplar growth and rooting is negatively affected. In addition, a downstream target TF, NAC45, involved in Auxin biosynthesis, was identified and PagERF16 could directly bind to its promoter to negatively regulate its expression. These results shed new light on the function of ERF TFs in plant root growth and salt stress tolerance.
format Online
Article
Text
id pubmed-8213033
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-82130332021-06-19 PagERF16 of Populus Promotes Lateral Root Proliferation and Sensitizes to Salt Stress Wang, Shengji Huang, Juanjuan Wang, Xingdou Fan, Yan Liu, Qiang Han, Youzhi Front Plant Sci Plant Science The aggravation of soil salinization limits the growth and development of plants. The AP2/ERF transcription factors (TFs) have been identified and play essential roles in plant development and stress response processes. In this study, the function of PagERF16 was detected using the overexpressing (OX) and RNAi transgenic poplar 84K hybrids. Plant growth, stomatal conductance, antioxidant enzymes activity, and PagERF16 co-expressed TFs were analyzed using morphological, physiological, and molecular methods. OX showed a more robust lateral root system with a bigger diameter and volume compared to the wild-type plants (WT). Physiological parameters indicated the bigger stomatal aperture and lower stomatal density of OX along with the lower Catalase (CAT) activity and higher malondialdehyde (MDA) content contributed to the salt sensitivity. The plant height and rooting rate of OX and RNAi were significantly worse compared to WT. Other than that, the morphology and physiology of RNAi plants were similar to WTs, suggesting that the function of PagERF16 may be redundant with other TFs. Our results indicate that when PagERF16 expression is either too high or too low, poplar growth and rooting is negatively affected. In addition, a downstream target TF, NAC45, involved in Auxin biosynthesis, was identified and PagERF16 could directly bind to its promoter to negatively regulate its expression. These results shed new light on the function of ERF TFs in plant root growth and salt stress tolerance. Frontiers Media S.A. 2021-06-04 /pmc/articles/PMC8213033/ /pubmed/34149765 http://dx.doi.org/10.3389/fpls.2021.669143 Text en Copyright © 2021 Wang, Huang, Wang, Fan, Liu and Han. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Wang, Shengji
Huang, Juanjuan
Wang, Xingdou
Fan, Yan
Liu, Qiang
Han, Youzhi
PagERF16 of Populus Promotes Lateral Root Proliferation and Sensitizes to Salt Stress
title PagERF16 of Populus Promotes Lateral Root Proliferation and Sensitizes to Salt Stress
title_full PagERF16 of Populus Promotes Lateral Root Proliferation and Sensitizes to Salt Stress
title_fullStr PagERF16 of Populus Promotes Lateral Root Proliferation and Sensitizes to Salt Stress
title_full_unstemmed PagERF16 of Populus Promotes Lateral Root Proliferation and Sensitizes to Salt Stress
title_short PagERF16 of Populus Promotes Lateral Root Proliferation and Sensitizes to Salt Stress
title_sort pagerf16 of populus promotes lateral root proliferation and sensitizes to salt stress
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8213033/
https://www.ncbi.nlm.nih.gov/pubmed/34149765
http://dx.doi.org/10.3389/fpls.2021.669143
work_keys_str_mv AT wangshengji pagerf16ofpopuluspromoteslateralrootproliferationandsensitizestosaltstress
AT huangjuanjuan pagerf16ofpopuluspromoteslateralrootproliferationandsensitizestosaltstress
AT wangxingdou pagerf16ofpopuluspromoteslateralrootproliferationandsensitizestosaltstress
AT fanyan pagerf16ofpopuluspromoteslateralrootproliferationandsensitizestosaltstress
AT liuqiang pagerf16ofpopuluspromoteslateralrootproliferationandsensitizestosaltstress
AT hanyouzhi pagerf16ofpopuluspromoteslateralrootproliferationandsensitizestosaltstress