Comparative study on the photosynthetic properties of four rare and endangered Dendrobium species
This study was carried out to determine the daily change of net photosynthetic rate(Pn), light response curve, CO2 response curve, leaf chlorophyll content and leaf microstructure of four Dendrobium species, including D. scoriarum, D. lituiflorum, D. lohohense, and D. aduncum. The purpose of this in...
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China Science Publishing & Media Ltd. (CSPM)
2025-01-01
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| Series: | Guangxi Zhiwu |
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| Online Access: | http://www.guihaia-journal.com/gxzw/ch/reader/create_pdf.aspx?file_no=20250101&year_id=2025&quarter_id=1&falg=1 |
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| author | CHEN Ni1,2, PENG Lihui1 , JIANG Haidu1, YANG Zhe1,2, JIANG Qiang3, QIU Shuo1, XIONG Zhongchen1, WEI Xiao1, CHAI Shengfeng1* |
| author_facet | CHEN Ni1,2, PENG Lihui1 , JIANG Haidu1, YANG Zhe1,2, JIANG Qiang3, QIU Shuo1, XIONG Zhongchen1, WEI Xiao1, CHAI Shengfeng1* |
| author_sort | CHEN Ni1,2, PENG Lihui1 , JIANG Haidu1, YANG Zhe1,2, JIANG Qiang3, QIU Shuo1, XIONG Zhongchen1, WEI Xiao1, CHAI Shengfeng1* |
| collection | DOAJ |
| description | This study was carried out to determine the daily change of net photosynthetic rate(Pn), light response curve, CO2 response curve, leaf chlorophyll content and leaf microstructure of four Dendrobium species, including D. scoriarum, D. lituiflorum, D. lohohense, and D. aduncum. The purpose of this investigation was to learn more about the photosynthetic characteristics of Dendrobium species. The results were as follows:(1)Dendrobium scoriarum and D. aduncum had positive Pn during the daytime, with the maximum peak at 8:00—10:00 a.m., and the nighttime Pn was lower than that during the daytime, and there was positive Pn. Dendrobium lituiflorum and D. lohohense showed a bimodal curve of Pn during the daytime, with positive Pn during the daytime and negative Pn during the nighttime.(2)Among the four species of Dendrobium, D. lituiflorum had the strongest photosynthetic capacity, while D. lohohense had the widest light adaptation range.(3)The initial carboxylation efficiency(α), potential maximum net photosynthetic rate(Amax)and photorespiration rate(Rp)of D. lituiflorum were significantly(P<0.05)greater than those of the other three Dendrobium species.(4)The leaf thickness(LT)of D. aduncum and D. scoriarum were greater than those of D. lituiflorum and D. lohohense, while stomatal density(SD)showed an opposite trend.(5)The total chlorophyll content(Chl), chlorophyll a(Chla), and chlorophyll b(Chlb)of D. lituiflorum were significantly(P<0.05)higher than those of the other three Dendrobium species. (6)The mesophyll thickness(MT)was significantly(P<0.05)negatively correlated with maximum net photosynthetic rate(Pmax); SD was highly significant(P<0.01)positively correlated with Pmax, and significantly(P<0.05)positively correlated with potential maximum net photosynthetic rate(Amax); total chlorophyll content(Chl)was significantly(P<0.05)positively correlated with Pmax and Amax. In conclusion, the four Dendrobium species may respond to low light levels, being affixed to tree trunks, or growing in stony, water-deficient settings by developing larger leaf pulp tissue and low stomatal density. The four Dendrobium species' total chlorophyll concentration, stomatal density, and leaf pulp thickness are significant determinants of their photosynthetic potential. For the four Dendrobium species to flourish during introduction and cultivation, it is helpful to establish a proper light environment and raise the CO2 content adequately. The findings of this research can serve as a reference for the introduction and the preservation of genetic resources. |
| format | Article |
| id | doaj-art-e858db97ffc744a0adcc9545ad1be7cd |
| institution | DOAJ |
| issn | 1000-3142 |
| language | zho |
| publishDate | 2025-01-01 |
| publisher | China Science Publishing & Media Ltd. (CSPM) |
| record_format | Article |
| series | Guangxi Zhiwu |
| spelling | doaj-art-e858db97ffc744a0adcc9545ad1be7cd2025-08-20T03:06:28ZzhoChina Science Publishing & Media Ltd. (CSPM)Guangxi Zhiwu1000-31422025-01-0145111410.11931/guihaia.gxzw202406018Comparative study on the photosynthetic properties of four rare and endangered Dendrobium speciesCHEN Ni1,2, PENG Lihui1 , JIANG Haidu1, YANG Zhe1,2, JIANG Qiang3, QIU Shuo1, XIONG Zhongchen1, WEI Xiao1, CHAI Shengfeng1*01. Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences/ Guangxi Key Laboratory of Plant Functional Phytochemicals and Sustainable Utilization, Guilin 541006, Guangxi, China;2. College of Tourism and Landscape Architecture, Guilin University of Technology, Guilin 541006, Guangxi, China;3. Yachang Orchid National Nature Reserve Management Center, Baise 533209, Guangxi, China 1. Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences/ Guangxi Key Laboratory of Plant Functional Phytochemicals and Sustainable Utilization, Guilin 541006, Guangxi, China; 2. College of Tourism and Landscape Architecture, Guilin University of Technology, Guilin 541006, Guangxi, China; 3. Yachang Orchid National Nature Reserve Management Center, Baise 533209, Guangxi, ChinaThis study was carried out to determine the daily change of net photosynthetic rate(Pn), light response curve, CO2 response curve, leaf chlorophyll content and leaf microstructure of four Dendrobium species, including D. scoriarum, D. lituiflorum, D. lohohense, and D. aduncum. The purpose of this investigation was to learn more about the photosynthetic characteristics of Dendrobium species. The results were as follows:(1)Dendrobium scoriarum and D. aduncum had positive Pn during the daytime, with the maximum peak at 8:00—10:00 a.m., and the nighttime Pn was lower than that during the daytime, and there was positive Pn. Dendrobium lituiflorum and D. lohohense showed a bimodal curve of Pn during the daytime, with positive Pn during the daytime and negative Pn during the nighttime.(2)Among the four species of Dendrobium, D. lituiflorum had the strongest photosynthetic capacity, while D. lohohense had the widest light adaptation range.(3)The initial carboxylation efficiency(α), potential maximum net photosynthetic rate(Amax)and photorespiration rate(Rp)of D. lituiflorum were significantly(P<0.05)greater than those of the other three Dendrobium species.(4)The leaf thickness(LT)of D. aduncum and D. scoriarum were greater than those of D. lituiflorum and D. lohohense, while stomatal density(SD)showed an opposite trend.(5)The total chlorophyll content(Chl), chlorophyll a(Chla), and chlorophyll b(Chlb)of D. lituiflorum were significantly(P<0.05)higher than those of the other three Dendrobium species. (6)The mesophyll thickness(MT)was significantly(P<0.05)negatively correlated with maximum net photosynthetic rate(Pmax); SD was highly significant(P<0.01)positively correlated with Pmax, and significantly(P<0.05)positively correlated with potential maximum net photosynthetic rate(Amax); total chlorophyll content(Chl)was significantly(P<0.05)positively correlated with Pmax and Amax. In conclusion, the four Dendrobium species may respond to low light levels, being affixed to tree trunks, or growing in stony, water-deficient settings by developing larger leaf pulp tissue and low stomatal density. The four Dendrobium species' total chlorophyll concentration, stomatal density, and leaf pulp thickness are significant determinants of their photosynthetic potential. For the four Dendrobium species to flourish during introduction and cultivation, it is helpful to establish a proper light environment and raise the CO2 content adequately. The findings of this research can serve as a reference for the introduction and the preservation of genetic resources.http://www.guihaia-journal.com/gxzw/ch/reader/create_pdf.aspx?file_no=20250101&year_id=2025&quarter_id=1&falg=1dendrobiumphotosynthetic propertiescrassulacean acid metabolism(cam)leaf microstructure |
| spellingShingle | CHEN Ni1,2, PENG Lihui1 , JIANG Haidu1, YANG Zhe1,2, JIANG Qiang3, QIU Shuo1, XIONG Zhongchen1, WEI Xiao1, CHAI Shengfeng1* Comparative study on the photosynthetic properties of four rare and endangered Dendrobium species Guangxi Zhiwu dendrobium photosynthetic properties crassulacean acid metabolism(cam) leaf microstructure |
| title | Comparative study on the photosynthetic properties of four rare and endangered Dendrobium species |
| title_full | Comparative study on the photosynthetic properties of four rare and endangered Dendrobium species |
| title_fullStr | Comparative study on the photosynthetic properties of four rare and endangered Dendrobium species |
| title_full_unstemmed | Comparative study on the photosynthetic properties of four rare and endangered Dendrobium species |
| title_short | Comparative study on the photosynthetic properties of four rare and endangered Dendrobium species |
| title_sort | comparative study on the photosynthetic properties of four rare and endangered dendrobium species |
| topic | dendrobium photosynthetic properties crassulacean acid metabolism(cam) leaf microstructure |
| url | http://www.guihaia-journal.com/gxzw/ch/reader/create_pdf.aspx?file_no=20250101&year_id=2025&quarter_id=1&falg=1 |
| work_keys_str_mv | AT chenni12penglihui1jianghaidu1yangzhe12jiangqiang3qiushuo1xiongzhongchen1weixiao1chaishengfeng1 comparativestudyonthephotosyntheticpropertiesoffourrareandendangereddendrobiumspecies |