Water loss prevention plays a greater role than ROS scavenging in dehydration tolerance of Kalanchoe tubiflora epiphyllous buds

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	Water loss prevention plays a greater role than ROS scavenging in dehydration tolerance of Kalanchoe tubiflora epiphyllous buds
	Luo, Yin Ling ; Su, Zhi Long ; Cui, Xian Liang ; Lan, Qin Ying
刊名	ISRAEL JOURNAL OF PLANT SCIENCES
	2015
卷号	62 期号:3 页码:153-159
ISSN号	0792-9978
中文摘要	Different plants and plant organs have various strategies to cope with drought stress. Kalanchoe tubiflora plants have a strong ability to prevent water loss and to scavenge reactive oxygen species. The epiphyllous bud of the plant serves as a reproduction unit and is able to generate plantlets even under conditions of extreme drought. The aim of this project was to study the antioxidant-stress response and osmoregulation of K. tubiflora epiphyllous buds to dehydration and to compare the drought-tolerance mechanisms of the plant body and the epiphyllous buds. With the progression of bud dehydration, relative water content, seedling survival rate and dry weight per seedling decreased, and electrolyte leakage, hydrogen peroxide and malondialdehyde content and superoxide anion production rate increased. The activities of the antioxidant enzymes superoxide dismutase, catalase, ascorbate peroxidase, dehydroascorbate reductase and glutathione reductase decreased under dehydration. The content of proline, soluble sugars and soluble protein increased in dehydrated buds proportionally with the extent of water loss. These data indicate that the drought-tolerance mechanism of the K. tubiflora bud was different from that of its mother plant. The buds invest more energy to prevent water loss during drought stress, and their antioxidant defense weakens.
学科主题	Plant Sciences
原文出处	10.1080/07929978.2015.1041770
语种	英语
公开日期	2017-06-06
内容类型	期刊论文
源URL	[http://ir.xtbg.org.cn/handle/353005/10436]
专题	西双版纳热带植物园_支撑系统
推荐引用方式 GB/T 7714	Luo, Yin Ling,Su, Zhi Long,Cui, Xian Liang,et al. Water loss prevention plays a greater role than ROS scavenging in dehydration tolerance of Kalanchoe tubiflora epiphyllous buds[J]. ISRAEL JOURNAL OF PLANT SCIENCES,2015,62(3):153-159.
APA	Luo, Yin Ling,Su, Zhi Long,Cui, Xian Liang,&Lan, Qin Ying.(2015).Water loss prevention plays a greater role than ROS scavenging in dehydration tolerance of Kalanchoe tubiflora epiphyllous buds.ISRAEL JOURNAL OF PLANT SCIENCES,62(3),153-159.
MLA	Luo, Yin Ling,et al."Water loss prevention plays a greater role than ROS scavenging in dehydration tolerance of Kalanchoe tubiflora epiphyllous buds".ISRAEL JOURNAL OF PLANT SCIENCES 62.3(2015):153-159.