Abstract:
:In an attempt to improve growth and secondary metabolite production, and to understand the possible mechanism involved in relation to the changes in physiology and activities of antioxidant enzymes, we cultured Morinda citrifolia adventitious roots in different strength (0.25, 0.50, 0.75, 1.0, 1.5 and 2.0) of Murashige and Skoog (MS) medium supplemented with 5 mg l(-1) indole butyric acid and 30 g l(-1) sucrose. Quarter-strength MS medium was proven suitable for the production of both root biomass and secondary metabolites [anthraquinone (AQ), phenolics and flavonoids]. With the increasing salt strength, root growth and AQ accumulation decreased significantly. Higher (1.5 and 2 MS) salt strength provoked osmotic stress resulted in more than twofold free proline accumulation than lower salt strength treated roots and induced free radical scavenging activity. Phenylalanine ammonia lyase activity showed a positive correlation in relation to salt strength that leads to an increase in phenol biosynthesis in expense of AQ formation. The elevated catalase (CAT), guaiacol peroxidase (G-POD) and superoxide dismutase activities and decreased ascorbate peroxidase (APX) activities were observed in roots treated with 2.0 MS. On the other hand, APX activity was strongly activated along with considerable increase in CAT activity at 0.25 MS treated culture. However, the joint functions of CAT, G-POD and APX at 0.25 MS treated cultures were efficient to eliminate the potential danger of hydrogen peroxide (H(2)O(2)) as evidenced from low H(2)O(2) accumulation and low level of lipid peroxidation.
journal_name
Plant Cell Repjournal_title
Plant cell reportsauthors
Abdullahil Baque M,Lee EJ,Paek KYdoi
10.1007/s00299-010-0854-4subject
Has Abstractpub_date
2010-07-01 00:00:00pages
685-94issue
7eissn
0721-7714issn
1432-203Xjournal_volume
29pub_type
杂志文章abstract::Time-course changes in anthocyanin accumulation, phenylalanine ammonia-lyase activity and chalcone synthase activity were examined in roselle callus tissues incubated under different culture conditions. Phenylalanine ammonia-lyase activity was not affected by either the kind of auxin supplemented to the medium or ligh...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00269050
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journal_title:Plant cell reports
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journal_title:Plant cell reports
pub_type: 杂志文章
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journal_title:Plant cell reports
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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
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journal_title:Plant cell reports
pub_type: 杂志文章,评审
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更新日期:2004-11-01 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:2000-04-01 00:00:00
abstract:KEY MESSAGE:The Arabidopsis AP2/ERF family transcription factor AtERF15 is nuclear-localized and positively regulates ABA and stress responses. Abscisic acid (ABA) is a major plant hormone that controls the expression of hundreds genes involved in various aspects of plant growth and development, such as seed developmen...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-014-1688-2
更新日期:2015-01-01 00:00:00
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journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-014-1705-5
更新日期:2015-02-01 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
pub_type: 杂志文章
doi:10.1007/s00299-010-0852-6
更新日期:2010-06-01 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
doi:10.1007/BF00716844
更新日期:1989-02-01 00:00:00
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journal_title:Plant cell reports
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更新日期:2019-02-01 00:00:00
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journal_title:Plant cell reports
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journal_title:Plant cell reports
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更新日期:2019-03-01 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:2007-03-01 00:00:00
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