Abstract：
:The epiphytic fern Pleopeltis polypodioides can tolerate repeated drying and rehydration events without conspicuous damage. To understand the biochemical principles of drought-tolerance, we analyzed the effect of dehydration and rehydration at 25 °C on hydroperoxide and lipid hydroperoxide, the activities of antioxidative (catalase and glutathione-oxidizing) enzymes and evaluated changes in fatty acid composition and saturation levels. Dehydration increased peroxide concentration and the activity of glutathione oxidases, but reduced catalase activity. During dehydration, the biosynthesis of palmitic (C16:0), linoleic (C18:2), linolenic (C18:3) and stearic acid (C18:0) increased 18, 12, 20, and 8-fold, respectively. In contrast, rehydration lowered levels of peroxides, the activity of glutathione-oxidizing enzymes, and fatty acids but increased catalase activity. The coordinated changes during de- and rehydration suggest that lipids and oxidative and antioxidative enzymes are components of the drought-resistance system.
journal_name
J Plant Physioljournal_title
Journal of plant physiologyauthors
John SP,Hasenstein KHdoi
10.1016/j.jplph.2018.05.006subject
Has Abstractpub_date
2018-09-01 00:00:00pages
12-18eissn
0176-1617issn
1618-1328pii
S0176-1617(18)30199-8journal_volume
228pub_type
杂志文章abstract：:Agrobacterium has the ability to transfer its genetic material, T-DNA, into the plant genome. The unique interaction between the bacterium and its host plant has been well studied at the transcriptome, but not at the metabolic level. For a better understanding of this interaction it is necessary to investigate the met...
journal_title：Journal of plant physiology
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journal_title：Journal of plant physiology
pub_type： 杂志文章
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journal_title：Journal of plant physiology
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journal_title：Journal of plant physiology
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journal_title：Journal of plant physiology
pub_type： 杂志文章
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pub_type： 杂志文章
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journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2009.12.017
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journal_title：Journal of plant physiology
pub_type： 杂志文章,meta分析,评审
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pub_type： 杂志文章,评审
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journal_title：Journal of plant physiology
pub_type： 杂志文章
doi：10.1016/j.jplph.2007.04.006
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journal_title：Journal of plant physiology
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journal_title：Journal of plant physiology
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更新日期：2006-03-01 00:00:00
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journal_title：Journal of plant physiology
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pub_type： 杂志文章
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journal_title：Journal of plant physiology
pub_type： 杂志文章
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更新日期：2020-11-01 00:00:00
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pub_type： 杂志文章
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