Physiological Responses of <i>Chionanthus retusus</i> Seedlings to Drought and Waterlogging Stresses
Understanding the adaptability of <i>Chionanthus retusus</i> Lindl. et Paxt. to extreme water conditions will help in exploring the potential application of this species in barren mountains. Three-year-old <i>Chionanthus retusus</i> seedlings were used in a greenhouse pot exp...
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| Format: | Article |
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MDPI AG
2023-02-01
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| Series: | Forests |
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| Online Access: | https://www.mdpi.com/1999-4907/14/2/429 |
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| author | Muge Niu Tianran Zhao Dong Xu Cuishuang Liu Yuan Liu Maotong Sun Huicheng Xie Jihong Li |
| author_facet | Muge Niu Tianran Zhao Dong Xu Cuishuang Liu Yuan Liu Maotong Sun Huicheng Xie Jihong Li |
| author_sort | Muge Niu |
| collection | DOAJ |
| description | Understanding the adaptability of <i>Chionanthus retusus</i> Lindl. et Paxt. to extreme water conditions will help in exploring the potential application of this species in barren mountains. Three-year-old <i>Chionanthus retusus</i> seedlings were used in a greenhouse pot experiment that analyzed the effect of different moisture gradients on growth, photosynthetic and fluorescence characteristics, protective enzyme system, osmotic substance regulation and cell membrane damage. The results indicated that <i>C. retusus</i> can effectively grow at a relative soil water content of 44.6% and above and can maintain growth for 20 days under flooded conditions. Under drought stress, net photosynthesis rate (Pn), stomatal conductance (Gs), transpiration rate (Tr), and intercellular carbon dioxide concentration (Ci) all showed a trend of gradual decrease. The trend of change was similar under waterlogging conditions. The maximal quantum yield of PSII photochemistry (F<sub>v</sub>/F<sub>m</sub>), actual photochemical efficiency of PSII (Φ<sub>PSII</sub>), photochemical quenching coefficient (q<sup>P</sup>), and electron transport rate (ETR) all decreased as drought deepened. Malondialdehyde (MDA) content decreased first and then increased. However, superoxide dismutase (SOD) activity content, peroxidase (POD) activity content, and proline (Pro) activity content showed a trend of increasing and then decreasing. <i>C. retusus</i> had good adaptability in the slight drought treatment group and flooded treatment group but showed intolerance in the high drought group, which could still last for approximately 21 days. C. <i>retusus</i> was found to have a strong adaptability to water stress and can be used as an afforestation tree in barren mountains. |
| first_indexed | 2024-03-11T08:49:14Z |
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| issn | 1999-4907 |
| language | English |
| last_indexed | 2024-03-11T08:49:14Z |
| publishDate | 2023-02-01 |
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| record_format | Article |
| series | Forests |
| spelling | doaj.art-cc599e11aecf43ada2825d5578041a6a2023-11-16T20:35:52ZengMDPI AGForests1999-49072023-02-0114242910.3390/f14020429Physiological Responses of <i>Chionanthus retusus</i> Seedlings to Drought and Waterlogging StressesMuge Niu0Tianran Zhao1Dong Xu2Cuishuang Liu3Yuan Liu4Maotong Sun5Huicheng Xie6Jihong Li7Shandong Mountain Tai Forest Ecosystem National Station, Key Laboratory of Forest Cultivation in the Lower Yellow River, National Forestry and Grassland Administration, College of Forestry, Shandong Agricultural University, Tai’an 271018, ChinaXu Zhou China Mining Geotechnical Technology Co., Ltd., Xuzhou 221000, ChinaShenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, ChinaShandong Mountain Tai Forest Ecosystem National Station, Key Laboratory of Forest Cultivation in the Lower Yellow River, National Forestry and Grassland Administration, College of Forestry, Shandong Agricultural University, Tai’an 271018, ChinaShandong Mountain Tai Forest Ecosystem National Station, Key Laboratory of Forest Cultivation in the Lower Yellow River, National Forestry and Grassland Administration, College of Forestry, Shandong Agricultural University, Tai’an 271018, ChinaShandong Mountain Tai Forest Ecosystem National Station, Key Laboratory of Forest Cultivation in the Lower Yellow River, National Forestry and Grassland Administration, College of Forestry, Shandong Agricultural University, Tai’an 271018, ChinaShandong Mountain Tai Forest Ecosystem National Station, Key Laboratory of Forest Cultivation in the Lower Yellow River, National Forestry and Grassland Administration, College of Forestry, Shandong Agricultural University, Tai’an 271018, ChinaShandong Mountain Tai Forest Ecosystem National Station, Key Laboratory of Forest Cultivation in the Lower Yellow River, National Forestry and Grassland Administration, College of Forestry, Shandong Agricultural University, Tai’an 271018, ChinaUnderstanding the adaptability of <i>Chionanthus retusus</i> Lindl. et Paxt. to extreme water conditions will help in exploring the potential application of this species in barren mountains. Three-year-old <i>Chionanthus retusus</i> seedlings were used in a greenhouse pot experiment that analyzed the effect of different moisture gradients on growth, photosynthetic and fluorescence characteristics, protective enzyme system, osmotic substance regulation and cell membrane damage. The results indicated that <i>C. retusus</i> can effectively grow at a relative soil water content of 44.6% and above and can maintain growth for 20 days under flooded conditions. Under drought stress, net photosynthesis rate (Pn), stomatal conductance (Gs), transpiration rate (Tr), and intercellular carbon dioxide concentration (Ci) all showed a trend of gradual decrease. The trend of change was similar under waterlogging conditions. The maximal quantum yield of PSII photochemistry (F<sub>v</sub>/F<sub>m</sub>), actual photochemical efficiency of PSII (Φ<sub>PSII</sub>), photochemical quenching coefficient (q<sup>P</sup>), and electron transport rate (ETR) all decreased as drought deepened. Malondialdehyde (MDA) content decreased first and then increased. However, superoxide dismutase (SOD) activity content, peroxidase (POD) activity content, and proline (Pro) activity content showed a trend of increasing and then decreasing. <i>C. retusus</i> had good adaptability in the slight drought treatment group and flooded treatment group but showed intolerance in the high drought group, which could still last for approximately 21 days. C. <i>retusus</i> was found to have a strong adaptability to water stress and can be used as an afforestation tree in barren mountains.https://www.mdpi.com/1999-4907/14/2/429drought-tolerant thresholdphotosynthetic characteristicschlorophyll fluorescence characteristicsbiochemical characteristics |
| spellingShingle | Muge Niu Tianran Zhao Dong Xu Cuishuang Liu Yuan Liu Maotong Sun Huicheng Xie Jihong Li Physiological Responses of <i>Chionanthus retusus</i> Seedlings to Drought and Waterlogging Stresses Forests drought-tolerant threshold photosynthetic characteristics chlorophyll fluorescence characteristics biochemical characteristics |
| title | Physiological Responses of <i>Chionanthus retusus</i> Seedlings to Drought and Waterlogging Stresses |
| title_full | Physiological Responses of <i>Chionanthus retusus</i> Seedlings to Drought and Waterlogging Stresses |
| title_fullStr | Physiological Responses of <i>Chionanthus retusus</i> Seedlings to Drought and Waterlogging Stresses |
| title_full_unstemmed | Physiological Responses of <i>Chionanthus retusus</i> Seedlings to Drought and Waterlogging Stresses |
| title_short | Physiological Responses of <i>Chionanthus retusus</i> Seedlings to Drought and Waterlogging Stresses |
| title_sort | physiological responses of i chionanthus retusus i seedlings to drought and waterlogging stresses |
| topic | drought-tolerant threshold photosynthetic characteristics chlorophyll fluorescence characteristics biochemical characteristics |
| url | https://www.mdpi.com/1999-4907/14/2/429 |
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