The Opposite Roles of White Light in Regulating Germination of Fresh and Aged Seed in Tobacco

Light is one of the important environmental factors for seeds to evaluate whether the natural environment is appropriate for germination and subsequent seedlings emergence. The mechanism of light-mediated germination is mainly concerned with fresh seeds (FS) of model plants but is poorly understood...

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Autores principales:	Yao Wang, Min Zhang, Shuai Dong, Yi-Ling Liu, Zhen-Hua Li
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	germination light fresh seed aged seed hormone sensitivity hormone level Botany QK1-989
Acceso en línea:	https://doaj.org/article/a1aa8d2c775f4dc1ba197e40b9571aed
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spelling	oai:doaj.org-article:a1aa8d2c775f4dc1ba197e40b9571aed2021-11-25T18:46:44ZThe Opposite Roles of White Light in Regulating Germination of Fresh and Aged Seed in Tobacco10.3390/plants101124572223-7747https://doaj.org/article/a1aa8d2c775f4dc1ba197e40b9571aed2021-11-01T00:00:00Zhttps://www.mdpi.com/2223-7747/10/11/2457https://doaj.org/toc/2223-7747Light is one of the important environmental factors for seeds to evaluate whether the natural environment is appropriate for germination and subsequent seedlings emergence. The mechanism of light-mediated germination is mainly concerned with fresh seeds (FS) of model plants but is poorly understood in aged seeds. Here, the effects of light on germination of FS and naturally aged seeds (NAS) in tobacco and their relationship with plant hormones gibberellins (GA) and abscisic acid (ABA) were investigated. The results demonstrated that light promoted and inhibited the germination of FS and NAS, respectively. GA and ABA were involved in the germination control of NAS, as well as in FS. However, light suppressed GA signal and stimulated ABA signal in NAS, whereas it stimulated GA signal and suppressed ABA signal in FS. In addition, light stimulated the GA accumulation and reduction in ABA in FS while inhibiting the increase in GA level in NAS. Together, the present study demonstrates that light has opposite effects on the germination of FS and NAS, which are closely related to the metabolism and/or signaling of plant hormones ABA and GA.Yao WangMin ZhangShuai DongYi-Ling LiuZhen-Hua LiMDPI AGarticlegerminationlightfresh seedaged seedhormone sensitivityhormone levelBotanyQK1-989ENPlants, Vol 10, Iss 2457, p 2457 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	germination light fresh seed aged seed hormone sensitivity hormone level Botany QK1-989
spellingShingle	germination light fresh seed aged seed hormone sensitivity hormone level Botany QK1-989 Yao Wang Min Zhang Shuai Dong Yi-Ling Liu Zhen-Hua Li The Opposite Roles of White Light in Regulating Germination of Fresh and Aged Seed in Tobacco
description	Light is one of the important environmental factors for seeds to evaluate whether the natural environment is appropriate for germination and subsequent seedlings emergence. The mechanism of light-mediated germination is mainly concerned with fresh seeds (FS) of model plants but is poorly understood in aged seeds. Here, the effects of light on germination of FS and naturally aged seeds (NAS) in tobacco and their relationship with plant hormones gibberellins (GA) and abscisic acid (ABA) were investigated. The results demonstrated that light promoted and inhibited the germination of FS and NAS, respectively. GA and ABA were involved in the germination control of NAS, as well as in FS. However, light suppressed GA signal and stimulated ABA signal in NAS, whereas it stimulated GA signal and suppressed ABA signal in FS. In addition, light stimulated the GA accumulation and reduction in ABA in FS while inhibiting the increase in GA level in NAS. Together, the present study demonstrates that light has opposite effects on the germination of FS and NAS, which are closely related to the metabolism and/or signaling of plant hormones ABA and GA.
format	article
author	Yao Wang Min Zhang Shuai Dong Yi-Ling Liu Zhen-Hua Li
author_facet	Yao Wang Min Zhang Shuai Dong Yi-Ling Liu Zhen-Hua Li
author_sort	Yao Wang
title	The Opposite Roles of White Light in Regulating Germination of Fresh and Aged Seed in Tobacco
title_short	The Opposite Roles of White Light in Regulating Germination of Fresh and Aged Seed in Tobacco
title_full	The Opposite Roles of White Light in Regulating Germination of Fresh and Aged Seed in Tobacco
title_fullStr	The Opposite Roles of White Light in Regulating Germination of Fresh and Aged Seed in Tobacco
title_full_unstemmed	The Opposite Roles of White Light in Regulating Germination of Fresh and Aged Seed in Tobacco
title_sort	opposite roles of white light in regulating germination of fresh and aged seed in tobacco
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/a1aa8d2c775f4dc1ba197e40b9571aed
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The Opposite Roles of White Light in Regulating Germination of Fresh and Aged Seed in Tobacco

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