Warm temperatures induce transgenerational epigenetic release of RNA silencing by inhibiting siRNA biogenesis in Arabidopsis
Warm temperatures induce transgenerational epigenetic release of RNA silencing by inhibiting siRNA biogenesis in Arabidopsis
复制标题
温暖的温度通过抑制拟南芥中的 siRNA 生物发生来诱导 RNA 沉默的跨代表观遗传释放
DOI:
10.1073/pnas.1219655110
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发表时间:
2013-05
期刊:
影响因子:
--
通讯作者:
Hai Huang
中科院分区:
文献类型:
--
作者:
Zu-Hua He;Jun-Zhong Liu;Hua Jin;Lin Lin;Qun Li;Ying Chen;Yue-Xing Yuan;Zhi-Yong Wang;Hai Huang
Owing to their sessile nature, plants have evolved sophisticated genetic and epigenetic regulatory systems to respond quickly and reversibly to daily and seasonal temperature changes. However, our knowledge of how plants sense and respond to warming ambient temperatures is rather limited. Here we show that an increase in growth temperature from 22 °C to 30 °C effectively inhibited transgene-induced posttranscriptional gene silencing (PTGS) in Arabidopsis. Interestingly, warmth-induced PTGS release exhibited transgenerational epigenetic inheritance. We discovered that the warmth-induced PTGS release occurred during a critical step that leads to the formation of double-stranded RNA (dsRNA) for producing small interfering RNAs (siRNAs). Deep sequencing of small RNAs and RNA blot analysis indicated that the 22–30 °C increase resulted in a significant reduction in the abundance of many trans-acting siRNAs that require dsRNA for biogenesis. We discovered that the temperature increase reduced the protein abundance of SUPPRESSOR OF GENE SILENCING 3, as a consequence, attenuating the formation of stable dsRNAs required for siRNA biogenesis. Importantly, SUPPRESSOR OF GENE SILENCING 3 overexpression released the warmth-triggered inhibition of siRNA biogenesis and reduced the transgenerational epigenetic memory. Thus, our study reveals a previously undescribed association between warming temperatures, an epigenetic system, and siRNA biogenesis.
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影响因子:
64.5
作者:
Calarco JP;Borges F;Donoghue MT;Van Ex F;Jullien PE;Lopes T;Gardner R;Berger F;Feijó JA;Becker JD;Martienssen RA
通讯作者:
Martienssen RA
DOI:
10.1016/j.bbagrm.2011.03.007
发表时间:
2011-08
影响因子:
4.7
作者:
Hauser, Marie-Theres;Aufsatz, Werner;Jonak, Claudia;Luschnig, Christian
通讯作者:
Luschnig, Christian
DOI:
10.3410/f.14261957.789552906
发表时间:
2012-05
期刊:
--
影响因子:
--
作者:
C. Fankhauser
通讯作者:
C. Fankhauser
影响因子:
7.4
作者:
Chellappan, P;Vanitharani, R;Fauquet, CM
通讯作者:
Fauquet, CM
影响因子:
11.6
作者:
Pecinka, Ales;Dinh, Huy Q.;Scheid, Ortrun Mittelsten
通讯作者:
Scheid, Ortrun Mittelsten