Effects and mechanism of paclobutrazol on drought resistance of Phyllostachys edulis seedlings
To reveal the mechanism of paclobutrazol (PP<sub>333</sub>) on drought resistance of Phyllostachys edulis seedlings, we set the PP<sub>333</sub> concentrations with 0 and 40 mg/L and the relative water contents with 30% (drought stress) and 70% (normal water supply), and a to...
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| Language: | English |
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Zhejiang University Press
2018-09-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
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| Online Access: | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2017.06.151 |
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| author | SHAO Shanlu YANG Lizhi TAO Chenyue HE Anguo YING Yeqing |
| author_facet | SHAO Shanlu YANG Lizhi TAO Chenyue HE Anguo YING Yeqing |
| author_sort | SHAO Shanlu |
| collection | DOAJ |
| description | To reveal the mechanism of paclobutrazol (PP<sub>333</sub>) on drought resistance of Phyllostachys edulis seedlings, we set the PP<sub>333</sub> concentrations with 0 and 40 mg/L and the relative water contents with 30% (drought stress) and 70% (normal water supply), and a total of four treatments in pot experiments. Membrane lipid peroxidases and the activities of antioxidant enzymes and contents of osmotic adjustment substances were determined at the 7th, 14th and 21st days under the drought stress, and the determination of height increment of seedlings, total biomass and leaf relative water content were conducted at the 21st day under the drought stress. The results showed that compared with the normal water supply, drought stress significantly reduced the height increment, total biomass, leaf relative water content, and the activities of catalase (CAT) and peroxidase (POD), but significantly increased the root shoot ratio, malondialdehyde (MDA) content, proline (Pro) content and superoxide dismutase (SOD) activity of P. edulis seedlings. Under the drought stress, the application of PP<sub>333</sub> significantly reduced the seedling height increment to the lowest value of 1.50 cm, while the root shoot ratio reached the maximum value of 1.35. The application of PP333 could significantly reduced MDA content and improved the leaf relative water content, proline content, and the activities of SOD, POD and CAT. Under the normal water supply condition, the effect of PP<sub>333</sub> was similar to that under the drought stress, while its efficacy was poor than that of the latter. In conclusion, the application of PP<sub>333</sub> can increase the relative water content, root shoot ratio, osmotic adjustment substance (Pro) content and antioxidant enzyme activities, and decrease the MDA content to improve the drought resistance of P. eduli seedlings. |
| format | Article |
| id | doaj-art-92bd5624595d4e1ea6057d5f2eb1adc5 |
| institution | Kabale University |
| issn | 1008-9209 2097-5155 |
| language | English |
| publishDate | 2018-09-01 |
| publisher | Zhejiang University Press |
| record_format | Article |
| series | 浙江大学学报. 农业与生命科学版 |
| spelling | doaj-art-92bd5624595d4e1ea6057d5f2eb1adc52025-08-20T03:32:00ZengZhejiang University Press浙江大学学报. 农业与生命科学版1008-92092097-51552018-09-014456557210.3785/j.issn.1008-9209.2017.06.15110089209Effects and mechanism of paclobutrazol on drought resistance of Phyllostachys edulis seedlingsSHAO ShanluYANG LizhiTAO ChenyueHE AnguoYING YeqingTo reveal the mechanism of paclobutrazol (PP<sub>333</sub>) on drought resistance of Phyllostachys edulis seedlings, we set the PP<sub>333</sub> concentrations with 0 and 40 mg/L and the relative water contents with 30% (drought stress) and 70% (normal water supply), and a total of four treatments in pot experiments. Membrane lipid peroxidases and the activities of antioxidant enzymes and contents of osmotic adjustment substances were determined at the 7th, 14th and 21st days under the drought stress, and the determination of height increment of seedlings, total biomass and leaf relative water content were conducted at the 21st day under the drought stress. The results showed that compared with the normal water supply, drought stress significantly reduced the height increment, total biomass, leaf relative water content, and the activities of catalase (CAT) and peroxidase (POD), but significantly increased the root shoot ratio, malondialdehyde (MDA) content, proline (Pro) content and superoxide dismutase (SOD) activity of P. edulis seedlings. Under the drought stress, the application of PP<sub>333</sub> significantly reduced the seedling height increment to the lowest value of 1.50 cm, while the root shoot ratio reached the maximum value of 1.35. The application of PP333 could significantly reduced MDA content and improved the leaf relative water content, proline content, and the activities of SOD, POD and CAT. Under the normal water supply condition, the effect of PP<sub>333</sub> was similar to that under the drought stress, while its efficacy was poor than that of the latter. In conclusion, the application of PP<sub>333</sub> can increase the relative water content, root shoot ratio, osmotic adjustment substance (Pro) content and antioxidant enzyme activities, and decrease the MDA content to improve the drought resistance of P. eduli seedlings.https://www.academax.com/doi/10.3785/j.issn.1008-9209.2017.06.151drought stresspaclobutrazol (PP<sub>333</sub>)<italic>Phyllostachys edulis</italic> seedlingsdrought resistance |
| spellingShingle | SHAO Shanlu YANG Lizhi TAO Chenyue HE Anguo YING Yeqing Effects and mechanism of paclobutrazol on drought resistance of Phyllostachys edulis seedlings 浙江大学学报. 农业与生命科学版 drought stress paclobutrazol (PP<sub>333</sub>) <italic>Phyllostachys edulis</italic> seedlings drought resistance |
| title | Effects and mechanism of paclobutrazol on drought resistance of Phyllostachys edulis seedlings |
| title_full | Effects and mechanism of paclobutrazol on drought resistance of Phyllostachys edulis seedlings |
| title_fullStr | Effects and mechanism of paclobutrazol on drought resistance of Phyllostachys edulis seedlings |
| title_full_unstemmed | Effects and mechanism of paclobutrazol on drought resistance of Phyllostachys edulis seedlings |
| title_short | Effects and mechanism of paclobutrazol on drought resistance of Phyllostachys edulis seedlings |
| title_sort | effects and mechanism of paclobutrazol on drought resistance of phyllostachys edulis seedlings |
| topic | drought stress paclobutrazol (PP<sub>333</sub>) <italic>Phyllostachys edulis</italic> seedlings drought resistance |
| url | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2017.06.151 |
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