Abstract Detail

Plant epigenetics: phenotypic and functional diversity beyond the DNA sequence

Colicchio , Jack M [1], Yuki, Cameron [1], Anderson, Ian [1], Adams, Sean [1], Smith, Aspen [1], Blackman, Benjamin [2].

Transgenerational responses to temperature modify locally adaptive signatures in Mimulus laciniatus.

In recent years our understanding of local adaptation has broadeneed to appreciate the complex ways in which the environnment and gennome interact to drive the development of an organism through eco-evolutionary feedback. Epigenetic responses to the environment are an examlple of this, and in recent years we have begun to understand how epigenetic modifications are utilized by the regulatory hub that is the genome. Indeed, in controlled environments it is clear that epigenetic regultory responses to the environment can be transmitted through to the next generation, yet the robustness and adaptive value of these responses in natural populations remains unclear. Using naturally derived inbred lines of  the cut-leaf monkeyflower (Mimulus laciniatus) we measure plasticity to temperature in growth-chamber conditions and then bring the offspring of these plants to two field common gardens to quantify the lasting impact of parental temperature on offspring development and fitness in nature.  We find that both early life history traits such as germination timing, as well as later life history traits including lifetime fitness.  Interestingly, many of these results were only detectable in the more mild low elevation common garden, but not at the more extreme high elevation site.  Additionally, many of the impacts of parent temperature were highly dependent on from where the parental lines were derived. These results suggest that trasngenerational effects can have lasting impacts on plant performance and development and nature, but that these responses can be quite variable even within the same species.

Related Links:
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1 - UC Berkeley, 361 Koshland, Berkeley, CA, 94720, United States
2 - University Of California, Berkeley, Plant And Microbial Biology, 111 Koshland Hall #3102, Berkeley, CA, 94720, United States


Presentation Type: Symposium Presentation
Session: SY1, Plant epigenetics: phenotypic and functional diversity beyond the DNA sequence
Location: Virtual/Virtual
Date: Monday, July 27th, 2020
Time: 12:45 PM
Number: SY1007
Abstract ID:301
Candidate for Awards:None

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