Cargando…

Karrikins: Regulators Involved in Phytohormone Signaling Networks during Seed Germination and Seedling Development

Seed germination and early seedling establishment are critical stages during a plant’s life cycle. These stages are precisely regulated by multiple internal factors, including phytohormones and environmental cues such as light. As a family of small molecules discovered in wildfire smoke, karrikins (...

Descripción completa

Detalles Bibliográficos
Autores principales: Meng, Yongjie, Shuai, Haiwei, Luo, Xiaofeng, Chen, Feng, Zhou, Wenguan, Yang, Wenyu, Shu, Kai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5258710/
https://www.ncbi.nlm.nih.gov/pubmed/28174573
http://dx.doi.org/10.3389/fpls.2016.02021
_version_ 1782499079371096064
author Meng, Yongjie
Shuai, Haiwei
Luo, Xiaofeng
Chen, Feng
Zhou, Wenguan
Yang, Wenyu
Shu, Kai
author_facet Meng, Yongjie
Shuai, Haiwei
Luo, Xiaofeng
Chen, Feng
Zhou, Wenguan
Yang, Wenyu
Shu, Kai
author_sort Meng, Yongjie
collection PubMed
description Seed germination and early seedling establishment are critical stages during a plant’s life cycle. These stages are precisely regulated by multiple internal factors, including phytohormones and environmental cues such as light. As a family of small molecules discovered in wildfire smoke, karrikins (KARs) play a key role in various biological processes, including seed dormancy release, germination regulation, and seedling establishment. KARs show a high similarity with strigolactone (SL) in both chemical structure and signaling transduction pathways. Current evidence shows that KARs may regulate seed germination by mediating the biosynthesis and/or signaling transduction of abscisic acid (ABA), gibberellin (GA) and auxin [indoleacetic acid (IAA)]. Interestingly, KARs regulate seed germination differently in different species. Furthermore, the promotion effect on seedling establishment implies that KARs have a great potential application in alleviating shade avoidance response, which attracts more and more attention in plant molecular biology. In these processes, KARs may have complicated interactions with phytohormones, especially with IAA. In this updated review, we summarize the current understanding of the relationship between KARs and SL in the chemical structure, signaling pathway and the regulation of plant growth and development. Further, the crosstalk between KARs and phytohormones in regulating seed germination and seedling development and that between KARs and IAA during shade responses are discussed. Finally, future challenges and research directions for the KAR research field are suggested.
format Online
Article
Text
id pubmed-5258710
institution National Center for Biotechnology Information
language English
publishDate 2017
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-52587102017-02-07 Karrikins: Regulators Involved in Phytohormone Signaling Networks during Seed Germination and Seedling Development Meng, Yongjie Shuai, Haiwei Luo, Xiaofeng Chen, Feng Zhou, Wenguan Yang, Wenyu Shu, Kai Front Plant Sci Plant Science Seed germination and early seedling establishment are critical stages during a plant’s life cycle. These stages are precisely regulated by multiple internal factors, including phytohormones and environmental cues such as light. As a family of small molecules discovered in wildfire smoke, karrikins (KARs) play a key role in various biological processes, including seed dormancy release, germination regulation, and seedling establishment. KARs show a high similarity with strigolactone (SL) in both chemical structure and signaling transduction pathways. Current evidence shows that KARs may regulate seed germination by mediating the biosynthesis and/or signaling transduction of abscisic acid (ABA), gibberellin (GA) and auxin [indoleacetic acid (IAA)]. Interestingly, KARs regulate seed germination differently in different species. Furthermore, the promotion effect on seedling establishment implies that KARs have a great potential application in alleviating shade avoidance response, which attracts more and more attention in plant molecular biology. In these processes, KARs may have complicated interactions with phytohormones, especially with IAA. In this updated review, we summarize the current understanding of the relationship between KARs and SL in the chemical structure, signaling pathway and the regulation of plant growth and development. Further, the crosstalk between KARs and phytohormones in regulating seed germination and seedling development and that between KARs and IAA during shade responses are discussed. Finally, future challenges and research directions for the KAR research field are suggested. Frontiers Media S.A. 2017-01-24 /pmc/articles/PMC5258710/ /pubmed/28174573 http://dx.doi.org/10.3389/fpls.2016.02021 Text en Copyright © 2017 Meng, Shuai, Luo, Chen, Zhou, Yang and Shu. http://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) or licensor 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
Meng, Yongjie
Shuai, Haiwei
Luo, Xiaofeng
Chen, Feng
Zhou, Wenguan
Yang, Wenyu
Shu, Kai
Karrikins: Regulators Involved in Phytohormone Signaling Networks during Seed Germination and Seedling Development
title Karrikins: Regulators Involved in Phytohormone Signaling Networks during Seed Germination and Seedling Development
title_full Karrikins: Regulators Involved in Phytohormone Signaling Networks during Seed Germination and Seedling Development
title_fullStr Karrikins: Regulators Involved in Phytohormone Signaling Networks during Seed Germination and Seedling Development
title_full_unstemmed Karrikins: Regulators Involved in Phytohormone Signaling Networks during Seed Germination and Seedling Development
title_short Karrikins: Regulators Involved in Phytohormone Signaling Networks during Seed Germination and Seedling Development
title_sort karrikins: regulators involved in phytohormone signaling networks during seed germination and seedling development
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5258710/
https://www.ncbi.nlm.nih.gov/pubmed/28174573
http://dx.doi.org/10.3389/fpls.2016.02021
work_keys_str_mv AT mengyongjie karrikinsregulatorsinvolvedinphytohormonesignalingnetworksduringseedgerminationandseedlingdevelopment
AT shuaihaiwei karrikinsregulatorsinvolvedinphytohormonesignalingnetworksduringseedgerminationandseedlingdevelopment
AT luoxiaofeng karrikinsregulatorsinvolvedinphytohormonesignalingnetworksduringseedgerminationandseedlingdevelopment
AT chenfeng karrikinsregulatorsinvolvedinphytohormonesignalingnetworksduringseedgerminationandseedlingdevelopment
AT zhouwenguan karrikinsregulatorsinvolvedinphytohormonesignalingnetworksduringseedgerminationandseedlingdevelopment
AT yangwenyu karrikinsregulatorsinvolvedinphytohormonesignalingnetworksduringseedgerminationandseedlingdevelopment
AT shukai karrikinsregulatorsinvolvedinphytohormonesignalingnetworksduringseedgerminationandseedlingdevelopment