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Effects of Drought Stress on Non-Structural Carbohydrates in Different Organs of Cunninghamia lanceolata
The Chinese fir Cunninghamia lanceolata (Lamb.) Hook. is an important timber conifer species in China. Much has been studied about Chinese fir, but the distribution of non-structural carbohydrates (NSCs) among different organs (needles, branch, stem, and roots) under drought stress remains poorly un...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10347226/ https://www.ncbi.nlm.nih.gov/pubmed/37447038 http://dx.doi.org/10.3390/plants12132477 |
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author | Huang, Xiaoyan Guo, Wenjuan Yang, Li Zou, Zhiguang Zhang, Xinyang Addo-Danso, Shalom Daniel Zhou, Lili Li, Shubin |
author_facet | Huang, Xiaoyan Guo, Wenjuan Yang, Li Zou, Zhiguang Zhang, Xinyang Addo-Danso, Shalom Daniel Zhou, Lili Li, Shubin |
author_sort | Huang, Xiaoyan |
collection | PubMed |
description | The Chinese fir Cunninghamia lanceolata (Lamb.) Hook. is an important timber conifer species in China. Much has been studied about Chinese fir, but the distribution of non-structural carbohydrates (NSCs) among different organs (needles, branch, stem, and roots) under drought stress remains poorly understood. In this study, we used one-year-old C. lanceolata plantlets to evaluate the effects of simulated drought under four water regimes, i.e., adequate water or control, light drought, moderate drought, and severe drought stress corresponding to 80%, 60%, 50%, and 40%, respectively of soil field maximum capacity on various NSCs in the needles, branch, stem and roots. The degree and duration of drought stress had significant effects on fructose, glucose, sucrose, soluble sugar, starch, and NSC content in various organs (p < 0.05). Fructose content increased in stem xylem, stem phloem, and leaves. Glucose and sucrose content declined in stem and branch xylem under light drought stress and moderate drought stress, and increased under severe drought stress conditions. Soluble sugars content declined, and starch content increased in leaf and branch phloem, but the latter could not compensate for soluble sugar consumption in the whole plant, and therefore, total NSCs decreased. Correlation analysis showed that a significant positive correlation existed in the soluble sugar content between leaves and roots, and between xylem and phloem in the stems and branches. Chinese fir appears to have different NSCs distribution strategies in response to drought stress, viz., allocating more soluble sugars to fine roots and increasing starch content in the needles, as well as ensuring osmosis to prevent xylem embolism. Our study may broaden the understanding of the various mechanisms that Chinese fir and other plants have to enhance their tolerance to drought stress. |
format | Online Article Text |
id | pubmed-10347226 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-103472262023-07-15 Effects of Drought Stress on Non-Structural Carbohydrates in Different Organs of Cunninghamia lanceolata Huang, Xiaoyan Guo, Wenjuan Yang, Li Zou, Zhiguang Zhang, Xinyang Addo-Danso, Shalom Daniel Zhou, Lili Li, Shubin Plants (Basel) Article The Chinese fir Cunninghamia lanceolata (Lamb.) Hook. is an important timber conifer species in China. Much has been studied about Chinese fir, but the distribution of non-structural carbohydrates (NSCs) among different organs (needles, branch, stem, and roots) under drought stress remains poorly understood. In this study, we used one-year-old C. lanceolata plantlets to evaluate the effects of simulated drought under four water regimes, i.e., adequate water or control, light drought, moderate drought, and severe drought stress corresponding to 80%, 60%, 50%, and 40%, respectively of soil field maximum capacity on various NSCs in the needles, branch, stem and roots. The degree and duration of drought stress had significant effects on fructose, glucose, sucrose, soluble sugar, starch, and NSC content in various organs (p < 0.05). Fructose content increased in stem xylem, stem phloem, and leaves. Glucose and sucrose content declined in stem and branch xylem under light drought stress and moderate drought stress, and increased under severe drought stress conditions. Soluble sugars content declined, and starch content increased in leaf and branch phloem, but the latter could not compensate for soluble sugar consumption in the whole plant, and therefore, total NSCs decreased. Correlation analysis showed that a significant positive correlation existed in the soluble sugar content between leaves and roots, and between xylem and phloem in the stems and branches. Chinese fir appears to have different NSCs distribution strategies in response to drought stress, viz., allocating more soluble sugars to fine roots and increasing starch content in the needles, as well as ensuring osmosis to prevent xylem embolism. Our study may broaden the understanding of the various mechanisms that Chinese fir and other plants have to enhance their tolerance to drought stress. MDPI 2023-06-28 /pmc/articles/PMC10347226/ /pubmed/37447038 http://dx.doi.org/10.3390/plants12132477 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Huang, Xiaoyan Guo, Wenjuan Yang, Li Zou, Zhiguang Zhang, Xinyang Addo-Danso, Shalom Daniel Zhou, Lili Li, Shubin Effects of Drought Stress on Non-Structural Carbohydrates in Different Organs of Cunninghamia lanceolata |
title | Effects of Drought Stress on Non-Structural Carbohydrates in Different Organs of Cunninghamia lanceolata |
title_full | Effects of Drought Stress on Non-Structural Carbohydrates in Different Organs of Cunninghamia lanceolata |
title_fullStr | Effects of Drought Stress on Non-Structural Carbohydrates in Different Organs of Cunninghamia lanceolata |
title_full_unstemmed | Effects of Drought Stress on Non-Structural Carbohydrates in Different Organs of Cunninghamia lanceolata |
title_short | Effects of Drought Stress on Non-Structural Carbohydrates in Different Organs of Cunninghamia lanceolata |
title_sort | effects of drought stress on non-structural carbohydrates in different organs of cunninghamia lanceolata |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10347226/ https://www.ncbi.nlm.nih.gov/pubmed/37447038 http://dx.doi.org/10.3390/plants12132477 |
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