Abstract：
KEY MESSAGE:Autotetraploid Arabidopsis line esd and 4COL exhibit enhanced tolerance to Cu stress by enhancing activation of antioxidative defenses, altering expression of genes related to Cu transport, chelation, and ABA-responsive. Autopolyploidy is ubiquitous among angiosperms and often results in better adaptation to stress conditions. Although copper (Cu) is an essential trace element, excess amounts can inhibit plant growth and even result in death. Here, we report that autotetraploid Arabidopsis thaliana esd and 4COL exhibit higher tolerance to Cu stress. Under such conditions, tetraploid plants had lower Cu contents and significantly more biomass compared with diploid plants. When exposed to excess Cu for 24 h, levels of superoxide anions, hydrogen peroxide, and malondialdehyde were lower in tetraploids than in diploids. Moreover, activities of the antioxidant enzymes superoxide dismutase and peroxidase were stimulated and glutathione content was maintained at a relative higher level in the tetraploids. The expression of genes related to Cu transport and chelation was altered in autotetraploid Arabidopsis under Cu stress, and several key genes involved in the response to abscisic acid (ABA) were significantly up-regulated. Our results indicate that tetraploid Arabidopsis esd and 4COL acquire improved tolerance to Cu stress through enhanced activation of antioxidative defense mechanisms, altered expression of genes related to Cu transport and chelation, and positive regulation of expression for ABA-responsive genes.
journal_name
Plant Cell Repjournal_title
Plant cell reportsauthors
Li M,Xu G,Xia X,Wang M,Yin X,Zhang B,Zhang X,Cui Ydoi
10.1007/s00299-017-2176-2subject
Has Abstractpub_date
2017-10-01 00:00:00pages
1585-1597issue
10eissn
0721-7714issn
1432-203Xpii
10.1007/s00299-017-2176-2journal_volume
36pub_type
杂志文章abstract：:Protoplasts isolated from cell suspensions of albinoMedicago borealis andM. sativa were fused chemically, using two methods, and electrically. Although a small scale method of chemical fusion gave the highest fusion frequency, electrofusion was the superior technique on the basis of throughput of green somatic hybrid ...
journal_title：Plant cell reports
pub_type： 杂志文章
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journal_title：Plant cell reports
pub_type： 杂志文章
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更新日期：1998-09-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
doi：10.1007/s00299-006-0224-4
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journal_title：Plant cell reports
pub_type： 杂志文章
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更新日期：1994-02-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
doi：10.1007/s00299-013-1406-5
更新日期：2013-06-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
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journal_title：Plant cell reports
pub_type： 杂志文章
doi：10.1007/s00299-003-0604-y
更新日期：2003-04-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
doi：10.1007/s00299-014-1568-9
更新日期：2014-06-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
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更新日期：1996-04-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
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更新日期：2011-07-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
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更新日期：2012-01-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
doi：10.1007/s002990100326
更新日期：2001-07-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
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更新日期：2013-03-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
doi：10.1007/BF00233055
更新日期：1993-08-01 00:00:00
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journal_title：Plant cell reports
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更新日期：1986-04-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
doi：10.1007/s00299-019-02409-x
更新日期：2019-07-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
doi：10.1007/BF00231961
更新日期：1994-05-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
doi：10.1007/s00299-006-0200-z
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journal_title：Plant cell reports
pub_type： 杂志文章
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pub_type： 杂志文章
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pub_type： 杂志文章
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更新日期：2006-03-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
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更新日期：2011-07-01 00:00:00
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journal_title：Plant cell reports
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更新日期：2019-09-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
doi：10.1007/s00299-011-1028-8
更新日期：2011-07-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章,评审
doi：10.1007/s00299-011-1005-2
更新日期：2011-05-01 00:00:00
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journal_title：Plant cell reports
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更新日期：1985-12-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
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更新日期：2015-05-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
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更新日期：2008-07-01 00:00:00
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journal_title：Plant cell reports
pub_type： 杂志文章
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更新日期：2006-05-01 00:00:00
