Abstract:
:Small non-coding RNAs are key post-transcriptional and transcriptional regulators of plant gene expression in angiosperm sporophytes. In recent years, gametophytic small RNAs have also been investigated, predominantly in Arabidopsis male gametophytes, revealing features in common with the sporophyte as well as some surprising differences. Transcriptomic and deep-sequencing studies confirm that multiple small RNA pathways operate in male gametophytes, with over 100 miRNAs detected throughout development. Trans-acting siRNA pathways that are associated with novel phased transcripts in pollen, and the nat-siRNA pathway have important roles in pollen maturation and gamete function. Moreover, a role for siRNA-triggered silencing of transposable elements in male and female germ cells has been established, a feature in common with the role of piRNAs in animal germlines. Current evidence supports an integral role for small RNAs in angiosperm gametophyte development and it can be anticipated that novel small RNAs with significant roles in germline development and genome integrity await discovery.
journal_name
J Exp Botjournal_title
Journal of experimental botanyauthors
Le Trionnaire G,Grant-Downton RT,Kourmpetli S,Dickinson HG,Twell Ddoi
10.1093/jxb/erq399subject
Has Abstractpub_date
2011-03-01 00:00:00pages
1601-10issue
5eissn
0022-0957issn
1460-2431pii
erq399journal_volume
62pub_type
杂志文章,评审abstract::Drought escape and dehydration avoidance represent alternative strategies for drought adaptation in annual crops. The mechanisms underlying these two strategies are reported to have a negative correlation, suggesting a trade-off. We conducted a quantitative trait locus (QTL) analysis of flowering time and root mass, t...
journal_title:Journal of experimental botany
pub_type: 杂志文章
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更新日期:2015-01-01 00:00:00
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journal_title:Journal of experimental botany
pub_type: 杂志文章
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abstract::In contrast to desiccation-tolerant 'orthodox' seeds, so-called 'intermediate' seeds cannot survive complete drying and are short-lived. All species of the genus Coffea produce intermediate seeds, but they show a considerable variability in seed desiccation tolerance (DT), which may help to decipher the molecular basi...
journal_title:Journal of experimental botany
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journal_title:Journal of experimental botany
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journal_title:Journal of experimental botany
pub_type: 杂志文章
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更新日期:2016-01-01 00:00:00
abstract::As a first step to investigate whether Rab GTPases are involved in grape berry development, the Vitis vinifera EST and gene databases were searched for members of the VvRab family. The grapevine genome was found to contain 26 VvRabs that could be distributed into all of the eight groups described in the literature for...
journal_title:Journal of experimental botany
pub_type: 杂志文章
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journal_title:Journal of experimental botany
pub_type: 杂志文章
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journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ern069
更新日期:2008-01-01 00:00:00
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journal_title:Journal of experimental botany
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更新日期:2011-01-01 00:00:00
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journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/eru099
更新日期:2014-05-01 00:00:00
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journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erp223
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journal_title:Journal of experimental botany
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journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erw455
更新日期:2017-01-01 00:00:00
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journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ert038
更新日期:2013-04-01 00:00:00
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journal_title:Journal of experimental botany
pub_type: 杂志文章
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更新日期:2017-04-01 00:00:00
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journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erq058
更新日期:2010-05-01 00:00:00
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journal_title:Journal of experimental botany
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journal_title:Journal of experimental botany
pub_type: 杂志文章
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journal_title:Journal of experimental botany
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journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
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journal_title:Journal of experimental botany
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更新日期:2014-08-01 00:00:00
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journal_title:Journal of experimental botany
pub_type: 杂志文章
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journal_title:Journal of experimental botany
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更新日期:2004-05-01 00:00:00
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journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erp075
更新日期:2009-01-01 00:00:00
abstract::Ribulose 1,5-bisphosphate carboxylase/oxygenase (Rubisco) activation decreases under moderate heat stress. This decrease is caused by an impairment of activase function, which is exacerbated by faster rates of Rubisco deactivation at elevated temperatures. To determine if stromal oxidation causes inhibition of activas...
journal_title:Journal of experimental botany
pub_type: 杂志文章
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更新日期:2006-01-01 00:00:00
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journal_title:Journal of experimental botany
pub_type: 杂志文章
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journal_title:Journal of experimental botany
pub_type: 杂志文章
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更新日期:2016-01-01 00:00:00
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journal_title:Journal of experimental botany
pub_type: 杂志文章
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更新日期:2017-06-15 00:00:00
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journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erh100
更新日期:2004-04-01 00:00:00