Abstract:
:Med8, a subunit of mediator complex, has proved to possess crucial functions in many organisms from yeast to human. In plant, the med8 mutant of Arabidopsis thaliana displayed delayed anthesis and increased number of leaves during the vegetative period. However, the roles of Med8 in other flowering plants are still unknown. To investigate the function of Med8 ortholog in tobacco (Nicotiana tabacum L.; named as NtMed8), we created transgenic tobacco plants with repressed NtMed8 expression mediated by RNA interference (RNAi). Compared with the wild type, the NtMed8-RNAi plants exhibited: more leaves with smaller but thicker blades; larger cells and vascular bundles with lower stomata density in leaves; swelled chloroplasts with thicker and lumen-enlarged thylakoids; weaker root system with fewer lateral roots; larger flowers and floral organs; flowering earlier under long day, but later under short day conditions; and male sterile with larger but less germinable pollens. In addition, quantitative RT-PCR indicated that NtMed8 is expressed in both vegetative and floral tissues. Subcellular localization analysis by transient expression of fusion protein in Nicotiana benthamiana leaves showed that NtMed8 was located in both plasma membrane and nucleus. These results suggest that NtMed8 plays important roles in both vegetative and reproductive development, and the function of Med8 appears to be, at least partially, conserved in flowering plants.
journal_name
Plant Cell Repjournal_title
Plant cell reportsauthors
Wang F,Wei H,Tong Z,Zhang X,Yang Z,Lan T,Duan Y,Wu Wdoi
10.1007/s00299-011-1118-7subject
Has Abstractpub_date
2011-11-01 00:00:00pages
2117-29issue
11eissn
0721-7714issn
1432-203Xjournal_volume
30pub_type
杂志文章abstract::A procedure has been developed for isolating protoplasts from prothalli of Ceratopteris richardii which can be cultured and are capable of regeneration. Protoplasts were isolated from 2-week-old gametophytes in a medium containing wall-digesting enzymes in 0.5 M sucrose, followed by purification of the released protop...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s002990050470
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journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00270122
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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/BF00232275
更新日期:1990-12-01 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:1985-04-01 00:00:00
abstract::Isolated ovules from the maize homozygous recessive brown midrib (bm3) were in vitro pollinated by pollen carrying the dominant allele - and the purple embryo marker (PEM). The colour characters of the embryos and kernels corresponded to the results of control pollination and confirmed the process of double fertilizat...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00267652
更新日期:1981-08-01 00:00:00
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journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-014-1583-x
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
doi:10.1007/s00299-007-0321-z
更新日期:2007-07-01 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
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更新日期:1998-05-01 00:00:00
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journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00234146
更新日期:1994-04-01 00:00:00
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journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00272536
更新日期:1988-06-01 00:00:00
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journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00272059
更新日期:1989-03-01 00:00:00
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pub_type: 杂志文章
doi:10.1007/s00299-006-0230-6
更新日期:2007-03-01 00:00:00
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journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00236268
更新日期:1992-09-01 00:00:00
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pub_type: 杂志文章
doi:10.1007/s00299-005-0095-0
更新日期:2006-06-01 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
doi:10.1007/BF00193734
更新日期:1995-12-01 00:00:00
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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
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journal_title:Plant cell reports
pub_type: 杂志文章
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更新日期:2000-06-01 00:00:00
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journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s002990050735
更新日期:1999-12-01 00:00:00
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journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-014-1670-z
更新日期:2014-12-01 00:00:00
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journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00232412
更新日期:1992-12-01 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
pub_type: 杂志文章
doi:10.1007/s00299-014-1702-8
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
doi:10.1007/BF00272634
更新日期:1982-12-01 00:00:00
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journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00269324
更新日期:1988-05-01 00:00:00
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journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00269240
更新日期:1986-04-01 00:00:00