Paclobutrazol pre-treatment enhanced flooding tolerance of sweet potato

Journal of Plant Physiology
Kuan-Hung R LinHsiao-Feng Lo

Abstract

The objective of this experiment was to study changes of antioxidants and antioxidative enzymes in the flooding-stressed sweet potato leaf, as affected by paclobutrazol (PBZ) treatment at 24 h prior to flooding. Sweet potato 'Taoyuan 2' were treated with 0 and 0.5 mg/plant of PBZ, afterwards subjected to non-flooding and flooding-stress conditions for 0, 1, 3, and 5 d, followed by a 2 d drainage period. The study was conducted as a factorial experiment in completely randomized blocks with three replications maintained within a screen house. Plants with various antioxidative systems responded differently to flooding stress according to the duration of the flooding period and subsequent drainage period. The increased levels of antioxidants and antioxidative enzymes observed on different days of flooding afforded the sweet potato leaf with improved flooding tolerance. Glutathione reductase activity in the leaf was significantly enhanced over 5 d continuous flooding followed by a drainage period, in comparison with non-flooding conditions. Under non-flooding conditions, antioxidative system of leaf was regulated and elevated by PBZ pre-treatment. PBZ treatment may enable sweet potato 'Taoyuan 2' to maintain the balance between the ...Continue Reading

References

Sep 1, 1992·Plant Physiology·R A KennedyT C Fox
Oct 1, 1991·Plant Physiology·S Y Hwang, T T Vantoai

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Citations

Jan 30, 2016·Pesticide Biochemistry and Physiology·Jie LiHuaiyu Bu
Dec 11, 2007·Colloids and Surfaces. B, Biointerfaces·A KishorekumarR Panneerselvam
Jul 24, 2007·Colloids and Surfaces. B, Biointerfaces·C Abdul JaleelR Panneerselvam
Feb 14, 2007·Colloids and Surfaces. B, Biointerfaces·P ManivannanR Panneerselvam
Mar 13, 2008·Physiologia Plantarum·Vicent ArbonaAurelio Gómez-Cadenas
Jul 6, 2020·Environmental Science and Pollution Research International·Ruisheng LiZhiqiang Zhou
Feb 28, 2019·Frontiers in Plant Science·S M Nuruzzaman ManikMeixue Zhou
Jul 22, 2019·Environmental Science and Pollution Research International·Xiulan JiangYan Liu

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