TY - JOUR
T1 - Small RNAs reflect grandparental environments in apomictic dandelion
AU - Morgado, Lionel
AU - Preite, Veronica
AU - Oplaat, Carla
AU - Anava, Sarit
AU - De Carvalho, Julie Ferreira
AU - Rechavi, Oded
AU - Johannes, Frank
AU - Verhoeven, Koen J.F.
N1 - Publisher Copyright:
© The Author 2017.
PY - 2017/8/1
Y1 - 2017/8/1
N2 - Plants can show long-term effects of environmental stresses and in some cases a stress "memory" has been reported to persist across generations, potentially mediated by epigenetic mechanisms. However, few documented cases exist of transgenerational effects that persist formultiple generations and it remains unclear if or how epigeneticmechanisms are involved. Here, we show that the composition of small regulatory RNAs in apomictic dandelion lineages reveals a footprint of drought stress and salicylic acid treatment experienced two generations ago. Overall proportions of 21 and 24 nt RNA pools were shifted due to grandparental treatments. While individual genes did not show strong up-or downregulation of associated sRNAs, the subset of genes that showed the strongest shifts in sRNA abundance was significantly enriched for several GO terms including stress-specific functions. This suggests that a stress-induced signal was transmitted across multiple unexposed generations leading to persistent changes in epigenetic gene regulation.
AB - Plants can show long-term effects of environmental stresses and in some cases a stress "memory" has been reported to persist across generations, potentially mediated by epigenetic mechanisms. However, few documented cases exist of transgenerational effects that persist formultiple generations and it remains unclear if or how epigeneticmechanisms are involved. Here, we show that the composition of small regulatory RNAs in apomictic dandelion lineages reveals a footprint of drought stress and salicylic acid treatment experienced two generations ago. Overall proportions of 21 and 24 nt RNA pools were shifted due to grandparental treatments. While individual genes did not show strong up-or downregulation of associated sRNAs, the subset of genes that showed the strongest shifts in sRNA abundance was significantly enriched for several GO terms including stress-specific functions. This suggests that a stress-induced signal was transmitted across multiple unexposed generations leading to persistent changes in epigenetic gene regulation.
KW - Drought stress
KW - Epigenetic inheritance
KW - Salicylic acid
KW - Small RNA
KW - Taraxacumofficinale
KW - Transgenerational effects
UR - http://www.scopus.com/inward/record.url?scp=85028436728&partnerID=8YFLogxK
U2 - 10.1093/molbev/msx150
DO - 10.1093/molbev/msx150
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C2 - 28472380
AN - SCOPUS:85028436728
SN - 0737-4038
VL - 34
SP - 2035
EP - 2040
JO - Molecular Biology and Evolution
JF - Molecular Biology and Evolution
IS - 8
ER -