Cargando…

The effects of chilling-light stress on photosystems I and II in three Paphiopedilum species

BACKGROUND: Low temperatures pose a critical limitation to the physiology and survival of chilling-sensitive plants. One example is the genus Paphiopedilum (Orchidaceae), which is mainly native to tropical and subtropical areas from Asia to the Pacific islands. However, little is known about the phy...

Descripción completa

Detalles Bibliográficos
Autores principales: Yang, Ying-Jie, Chang, Wei, Huang, Wei, Zhang, Shi-Bao, Hu, Hong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5702284/
https://www.ncbi.nlm.nih.gov/pubmed/29177684
http://dx.doi.org/10.1186/s40529-017-0208-4
_version_ 1783281494001713152
author Yang, Ying-Jie
Chang, Wei
Huang, Wei
Zhang, Shi-Bao
Hu, Hong
author_facet Yang, Ying-Jie
Chang, Wei
Huang, Wei
Zhang, Shi-Bao
Hu, Hong
author_sort Yang, Ying-Jie
collection PubMed
description BACKGROUND: Low temperatures pose a critical limitation to the physiology and survival of chilling-sensitive plants. One example is the genus Paphiopedilum (Orchidaceae), which is mainly native to tropical and subtropical areas from Asia to the Pacific islands. However, little is known about the physiological mechanism(s) underlying its sensitivity to chilling temperature. We examined how chilling-light stress influences the activities of photosystem I (PSI) and photosystem II (PSII) in three species: P. armeniacum, P. micranthum, and P. purpuratum. All originate from different distribution zones that cover a range of temperatures. RESULTS: Photosystem II of three Paphiopedilum species was remarkable sensitivity to chilling stress. After 8 h chilling stress, the maximum quantum yield of PSII of three species of Paphiopedilum was significantly decreased, especially in P. purpuratum. The quantity of efficient PSI complex (P (m)) value did not significantly differ after 8 h chilling treatment compared to the original value in three species. The stronger PSII photoinhibition and significantly less capacity for cyclic electron flow (CEF) were observed in P. purpuratum. CONCLUSIONS: In conclusion, the three species of Paphiopedilum showed significant PSII photoinhibition when exposed to 4 °C chilling treatment. However, their PSI activities were not susceptible to chilling-light stress during 8 h. The CEF was important for the photoprotection of PSI and PSII in P. armeniacum and P. micranthum under chilling conditions. Our findings suggested that the photosynthetic characteristics of Paphiopedilum were well adapted to their habitat.
format Online
Article
Text
id pubmed-5702284
institution National Center for Biotechnology Information
language English
publishDate 2017
publisher Springer Berlin Heidelberg
record_format MEDLINE/PubMed
spelling pubmed-57022842017-12-05 The effects of chilling-light stress on photosystems I and II in three Paphiopedilum species Yang, Ying-Jie Chang, Wei Huang, Wei Zhang, Shi-Bao Hu, Hong Bot Stud Original Article BACKGROUND: Low temperatures pose a critical limitation to the physiology and survival of chilling-sensitive plants. One example is the genus Paphiopedilum (Orchidaceae), which is mainly native to tropical and subtropical areas from Asia to the Pacific islands. However, little is known about the physiological mechanism(s) underlying its sensitivity to chilling temperature. We examined how chilling-light stress influences the activities of photosystem I (PSI) and photosystem II (PSII) in three species: P. armeniacum, P. micranthum, and P. purpuratum. All originate from different distribution zones that cover a range of temperatures. RESULTS: Photosystem II of three Paphiopedilum species was remarkable sensitivity to chilling stress. After 8 h chilling stress, the maximum quantum yield of PSII of three species of Paphiopedilum was significantly decreased, especially in P. purpuratum. The quantity of efficient PSI complex (P (m)) value did not significantly differ after 8 h chilling treatment compared to the original value in three species. The stronger PSII photoinhibition and significantly less capacity for cyclic electron flow (CEF) were observed in P. purpuratum. CONCLUSIONS: In conclusion, the three species of Paphiopedilum showed significant PSII photoinhibition when exposed to 4 °C chilling treatment. However, their PSI activities were not susceptible to chilling-light stress during 8 h. The CEF was important for the photoprotection of PSI and PSII in P. armeniacum and P. micranthum under chilling conditions. Our findings suggested that the photosynthetic characteristics of Paphiopedilum were well adapted to their habitat. Springer Berlin Heidelberg 2017-11-25 /pmc/articles/PMC5702284/ /pubmed/29177684 http://dx.doi.org/10.1186/s40529-017-0208-4 Text en © The Author(s) 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Original Article
Yang, Ying-Jie
Chang, Wei
Huang, Wei
Zhang, Shi-Bao
Hu, Hong
The effects of chilling-light stress on photosystems I and II in three Paphiopedilum species
title The effects of chilling-light stress on photosystems I and II in three Paphiopedilum species
title_full The effects of chilling-light stress on photosystems I and II in three Paphiopedilum species
title_fullStr The effects of chilling-light stress on photosystems I and II in three Paphiopedilum species
title_full_unstemmed The effects of chilling-light stress on photosystems I and II in three Paphiopedilum species
title_short The effects of chilling-light stress on photosystems I and II in three Paphiopedilum species
title_sort effects of chilling-light stress on photosystems i and ii in three paphiopedilum species
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5702284/
https://www.ncbi.nlm.nih.gov/pubmed/29177684
http://dx.doi.org/10.1186/s40529-017-0208-4
work_keys_str_mv AT yangyingjie theeffectsofchillinglightstressonphotosystemsiandiiinthreepaphiopedilumspecies
AT changwei theeffectsofchillinglightstressonphotosystemsiandiiinthreepaphiopedilumspecies
AT huangwei theeffectsofchillinglightstressonphotosystemsiandiiinthreepaphiopedilumspecies
AT zhangshibao theeffectsofchillinglightstressonphotosystemsiandiiinthreepaphiopedilumspecies
AT huhong theeffectsofchillinglightstressonphotosystemsiandiiinthreepaphiopedilumspecies
AT yangyingjie effectsofchillinglightstressonphotosystemsiandiiinthreepaphiopedilumspecies
AT changwei effectsofchillinglightstressonphotosystemsiandiiinthreepaphiopedilumspecies
AT huangwei effectsofchillinglightstressonphotosystemsiandiiinthreepaphiopedilumspecies
AT zhangshibao effectsofchillinglightstressonphotosystemsiandiiinthreepaphiopedilumspecies
AT huhong effectsofchillinglightstressonphotosystemsiandiiinthreepaphiopedilumspecies