Effects of Two Biochar Types on Mitigating Drought and Salt Stress in Tomato Seedlings
Biochar’s underlying biochemical and physiological mechanisms in reducing irrigation and salinity stress are elusive. This paper investigates the effects of two types of biochar (wood biochar and poultry biochar) on the growth and physiology of tomato seedlings exposed to the combined effects of dro...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/13/4/1039 |
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| author | Wenqian Zhang Jiahua Wei Lili Guo Heng Fang Xiaojuan Liu Kehao Liang Wenquan Niu Fulai Liu Kadambot H. M. Siddique |
| author_facet | Wenqian Zhang Jiahua Wei Lili Guo Heng Fang Xiaojuan Liu Kehao Liang Wenquan Niu Fulai Liu Kadambot H. M. Siddique |
| author_sort | Wenqian Zhang |
| collection | DOAJ |
| description | Biochar’s underlying biochemical and physiological mechanisms in reducing irrigation and salinity stress are elusive. This paper investigates the effects of two types of biochar (wood biochar and poultry biochar) on the growth and physiology of tomato seedlings exposed to the combined effects of drought and salinity stress. Two types of biochar, wood biochar (WB) and poultry biochar (PB), were added to the soil separately, with three salinity gradients of 0, 100, and 200 mmol/L and two water supply conditions of full irrigation (FI) and deficit irrigation (DI). Results showed that biochar addition effectively improved the root water potential and osmotic potential of tomato plant under drought and salinity stress. Biochar application also mitigated leaf relative water content by 9.86% and 24.37% under drought and salinity stress, respectively. Furthermore, biochar application decreased abscisic acid concentrations in xylem sap under drought and salinity stress. Biochar altered the soil structure and increased field water holding capacity, indirectly increasing the soil water supply. While water use efficiency did not increase significantly after biochar application, a synergistic increase in seedling growth and water consumption occurred. In conclusion, biochar addition shows promise for promoting seedling growth to help mitigate the adverse impacts of drought and salinity stress on plant growth and physiology. |
| first_indexed | 2024-03-11T05:19:52Z |
| format | Article |
| id | doaj.art-621c6c998bf341d6a96f4e55416de401 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-11T05:19:52Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-621c6c998bf341d6a96f4e55416de4012023-11-17T17:56:42ZengMDPI AGAgronomy2073-43952023-03-01134103910.3390/agronomy13041039Effects of Two Biochar Types on Mitigating Drought and Salt Stress in Tomato SeedlingsWenqian Zhang0Jiahua Wei1Lili Guo2Heng Fang3Xiaojuan Liu4Kehao Liang5Wenquan Niu6Fulai Liu7Kadambot H. M. Siddique8Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, ChinaState Key Laboratory of Hydroscience and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, ChinaDepartment of Plant and Environmental Science, Faculty of Science, University of Copenhagen, DK-2630 Taastrup, DenmarkDepartment of Plant and Environmental Science, Faculty of Science, University of Copenhagen, DK-2630 Taastrup, DenmarkDepartment of Plant and Environmental Science, Faculty of Science, University of Copenhagen, DK-2630 Taastrup, DenmarkDepartment of Plant and Environmental Science, Faculty of Science, University of Copenhagen, DK-2630 Taastrup, DenmarkKey Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, ChinaDepartment of Plant and Environmental Science, Faculty of Science, University of Copenhagen, DK-2630 Taastrup, DenmarkThe UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6001, AustraliaBiochar’s underlying biochemical and physiological mechanisms in reducing irrigation and salinity stress are elusive. This paper investigates the effects of two types of biochar (wood biochar and poultry biochar) on the growth and physiology of tomato seedlings exposed to the combined effects of drought and salinity stress. Two types of biochar, wood biochar (WB) and poultry biochar (PB), were added to the soil separately, with three salinity gradients of 0, 100, and 200 mmol/L and two water supply conditions of full irrigation (FI) and deficit irrigation (DI). Results showed that biochar addition effectively improved the root water potential and osmotic potential of tomato plant under drought and salinity stress. Biochar application also mitigated leaf relative water content by 9.86% and 24.37% under drought and salinity stress, respectively. Furthermore, biochar application decreased abscisic acid concentrations in xylem sap under drought and salinity stress. Biochar altered the soil structure and increased field water holding capacity, indirectly increasing the soil water supply. While water use efficiency did not increase significantly after biochar application, a synergistic increase in seedling growth and water consumption occurred. In conclusion, biochar addition shows promise for promoting seedling growth to help mitigate the adverse impacts of drought and salinity stress on plant growth and physiology.https://www.mdpi.com/2073-4395/13/4/1039biocharwater relationshipphotosynthesisABAwater use efficiency (WUE) |
| spellingShingle | Wenqian Zhang Jiahua Wei Lili Guo Heng Fang Xiaojuan Liu Kehao Liang Wenquan Niu Fulai Liu Kadambot H. M. Siddique Effects of Two Biochar Types on Mitigating Drought and Salt Stress in Tomato Seedlings Agronomy biochar water relationship photosynthesis ABA water use efficiency (WUE) |
| title | Effects of Two Biochar Types on Mitigating Drought and Salt Stress in Tomato Seedlings |
| title_full | Effects of Two Biochar Types on Mitigating Drought and Salt Stress in Tomato Seedlings |
| title_fullStr | Effects of Two Biochar Types on Mitigating Drought and Salt Stress in Tomato Seedlings |
| title_full_unstemmed | Effects of Two Biochar Types on Mitigating Drought and Salt Stress in Tomato Seedlings |
| title_short | Effects of Two Biochar Types on Mitigating Drought and Salt Stress in Tomato Seedlings |
| title_sort | effects of two biochar types on mitigating drought and salt stress in tomato seedlings |
| topic | biochar water relationship photosynthesis ABA water use efficiency (WUE) |
| url | https://www.mdpi.com/2073-4395/13/4/1039 |
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