Effects of high temperature and high light on photosystem II activity in leaves of two Bauhinia species
It is, so far, unclear whether lianas and trees differ in photosynthetic thermotolerance and response to high temperature and high light. Here, photosynthetic thermotolerance was compared in the leaves of Bauhinia brachycarpa (tree) and Bauhinia comosa (liana). Moreover, the combined treatments of f...
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Format: | Article |
Language: | English |
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Academy of Sciences of the Czech Republic, Institute of Experimental Botany
2019-11-01
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Series: | Photosynthetica |
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Online Access: | https://ps.ueb.cas.cz/artkey/phs-201904-0020_effects-of-high-temperature-and-high-light-on-photosystem-ii-activity-in-leaves-of-two-bauhinia-species.php |
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author | S.B. ZHANG Q.L. DENG Y.J. HAO |
author_facet | S.B. ZHANG Q.L. DENG Y.J. HAO |
author_sort | S.B. ZHANG |
collection | DOAJ |
description | It is, so far, unclear whether lianas and trees differ in photosynthetic thermotolerance and response to high temperature and high light. Here, photosynthetic thermotolerance was compared in the leaves of Bauhinia brachycarpa (tree) and Bauhinia comosa (liana). Moreover, the combined treatments of four temperatures (25, 35, 40, and 45°C) and two light intensities [500 and 2,000 μmol(photon) m-2 s-1] were used to investigate the effects of high temperature and high light on PSII activity. The results showed that B. brachycarpa leaves exhibited higher photosynthetic thermotolerance, leaf mass per area, and Ca2+ concentration than those of B. comosa. As the temperature and light intensity increased, maximum quantum yield of PSII decreased significantly, particularly with greater declines in B. comosa than that in B. brachycarpa. Our results suggested that PSII was more sensitive to high temperature and high light in liana species B. comosa than in the congener tree species B. brachycarpa. |
first_indexed | 2024-12-13T00:59:13Z |
format | Article |
id | doaj.art-539f4d223f43401bb639c652bad492c6 |
institution | Directory Open Access Journal |
issn | 0300-3604 1573-9058 |
language | English |
last_indexed | 2024-12-13T00:59:13Z |
publishDate | 2019-11-01 |
publisher | Academy of Sciences of the Czech Republic, Institute of Experimental Botany |
record_format | Article |
series | Photosynthetica |
spelling | doaj.art-539f4d223f43401bb639c652bad492c62022-12-22T00:04:44ZengAcademy of Sciences of the Czech Republic, Institute of Experimental BotanyPhotosynthetica0300-36041573-90582019-11-015741094109910.32615/ps.2019.128phs-201904-0020Effects of high temperature and high light on photosystem II activity in leaves of two Bauhinia speciesS.B. ZHANG0Q.L. DENG1Y.J. HAO2CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, 666303 Yunnan, ChinaSchool of Geography and Eco-tourism, Southwest Forestry University, 650224 Kunming, Yunnan, ChinaSchool of Ecology and Environment Conservation, Southwest Forestry University, Kunming, 650224 Yunnan, ChinaIt is, so far, unclear whether lianas and trees differ in photosynthetic thermotolerance and response to high temperature and high light. Here, photosynthetic thermotolerance was compared in the leaves of Bauhinia brachycarpa (tree) and Bauhinia comosa (liana). Moreover, the combined treatments of four temperatures (25, 35, 40, and 45°C) and two light intensities [500 and 2,000 μmol(photon) m-2 s-1] were used to investigate the effects of high temperature and high light on PSII activity. The results showed that B. brachycarpa leaves exhibited higher photosynthetic thermotolerance, leaf mass per area, and Ca2+ concentration than those of B. comosa. As the temperature and light intensity increased, maximum quantum yield of PSII decreased significantly, particularly with greater declines in B. comosa than that in B. brachycarpa. Our results suggested that PSII was more sensitive to high temperature and high light in liana species B. comosa than in the congener tree species B. brachycarpa.https://ps.ueb.cas.cz/artkey/phs-201904-0020_effects-of-high-temperature-and-high-light-on-photosystem-ii-activity-in-leaves-of-two-bauhinia-species.phpglobal warming; heat stress; photoinhibition; photoprotection. |
spellingShingle | S.B. ZHANG Q.L. DENG Y.J. HAO Effects of high temperature and high light on photosystem II activity in leaves of two Bauhinia species Photosynthetica global warming; heat stress; photoinhibition; photoprotection. |
title | Effects of high temperature and high light on photosystem II activity in leaves of two Bauhinia species |
title_full | Effects of high temperature and high light on photosystem II activity in leaves of two Bauhinia species |
title_fullStr | Effects of high temperature and high light on photosystem II activity in leaves of two Bauhinia species |
title_full_unstemmed | Effects of high temperature and high light on photosystem II activity in leaves of two Bauhinia species |
title_short | Effects of high temperature and high light on photosystem II activity in leaves of two Bauhinia species |
title_sort | effects of high temperature and high light on photosystem ii activity in leaves of two bauhinia species |
topic | global warming; heat stress; photoinhibition; photoprotection. |
url | https://ps.ueb.cas.cz/artkey/phs-201904-0020_effects-of-high-temperature-and-high-light-on-photosystem-ii-activity-in-leaves-of-two-bauhinia-species.php |
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