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Ameliorating effects of biochar on photosynthetic efficiency and antioxidant defence of Phragmites karka under drought stress.
Plant Biology ( IF 4.2 ) Pub Date : 2020-01-12 , DOI: 10.1111/plb.13054 Z Abideen 1, 2, 3 , H-W Koyro 2 , B Huchzermeyer 3 , R Ansari 1 , F Zulfiqar 4 , B Gul 1
Plant Biology ( IF 4.2 ) Pub Date : 2020-01-12 , DOI: 10.1111/plb.13054 Z Abideen 1, 2, 3 , H-W Koyro 2 , B Huchzermeyer 3 , R Ansari 1 , F Zulfiqar 4 , B Gul 1
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Biochar (BC) has been reported to improve growth and drought resistance in many plants. However, adequate information on the drought resistance mechanism mediated of BC on Phragmites karka, a bioenergy plant, is not available. The impact of BC addition (0%, 0.75% and 2.5%) on plant growth and physiology of P. karka under drought was assessed. Soil water-holding capacity and soil water content were significantly improved with 0.75% BC as compared with the un-amended controls. This resulted in improved plant performance under drought conditions. An increase of parameters, such as plant fresh and dry biomass, root to shoot ratio and root mass fraction, was paralleled by an increase of chlorophyll content, net photosynthesis rate and water use efficiency of plants. Plants treated with 0.75% BC experienced less oxidative stress due to higher photosystem II efficiency and stimulated activity of antioxidant defense systems. Our results demonstrate that soil amendment with 0.75% BC allow the potential energy plant P. karka to grow in an arid habitat.
中文翻译：
生物炭对干旱胁迫下芦苇光合效率和抗氧化防御的改善作用。
据报道，生物炭（BC）可以改善许多植物的生长和抗旱性。但是，尚无足够的有关生物素植物芦苇karka上BC介导的抗旱机制的信息。评估了BC添加量（0％，0.75％和2.5％）对干旱条件下P. karka植物生长和生理的影响。与未改良的对照相比，土壤水保持能力和土壤含水量在BC为0.75％的情况下得到了显着改善。这导致干旱条件下植物的性能提高。诸如植物新鲜和干燥生物量，根茎比和根质量分数等参数的增加与植物叶绿素含量，净光合作用速率和水分利用效率的增加平行。用0处理的植物。由于较高的光系统II效率和抗氧化剂防御系统的刺激活性，75％的BC受到的氧化压力较小。我们的研究结果表明，用BC浓度为0.75％的土壤改良剂可使潜在的能源植物P. karka在干旱的生境中生长。
更新日期：2020-01-12
中文翻译：
生物炭对干旱胁迫下芦苇光合效率和抗氧化防御的改善作用。
据报道，生物炭（BC）可以改善许多植物的生长和抗旱性。但是，尚无足够的有关生物素植物芦苇karka上BC介导的抗旱机制的信息。评估了BC添加量（0％，0.75％和2.5％）对干旱条件下P. karka植物生长和生理的影响。与未改良的对照相比，土壤水保持能力和土壤含水量在BC为0.75％的情况下得到了显着改善。这导致干旱条件下植物的性能提高。诸如植物新鲜和干燥生物量，根茎比和根质量分数等参数的增加与植物叶绿素含量，净光合作用速率和水分利用效率的增加平行。用0处理的植物。由于较高的光系统II效率和抗氧化剂防御系统的刺激活性，75％的BC受到的氧化压力较小。我们的研究结果表明，用BC浓度为0.75％的土壤改良剂可使潜在的能源植物P. karka在干旱的生境中生长。
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