New interdisciplinary pilot studies aim to harness whole-genome bisulfite sequencing and targeted methylation panels to assess the impact of ibuprofen contamination on aquatic organisms. In tandem, researchers plan to partner with environmental agencies to develop field-deployable sampling and analysis workflows, validating epigenetic biomarkers as real-time sensors for pollution. This initiative comes amidst widespread optimism in the scientific community regarding the application of DNA methylation measures across health and environmental domains.
“Coral can remember the past. Not in the same ways people do, of course, but they do form a sort of memory at the molecular level — a record of the stressful times punctuated by periods of pollution and prolonged heating.”
“This is where environmental epigeneticist Jose Eirin-Lopez comes in. With grants from the NSF and NOAA, he’s unpacking these mechanisms by studying epigenetics.”
“When water temperatures spike, for instance, epigenetic changes that activate defense genes can help coral respond and recover.”
“Eirin-Lopez’s team confirmed this in their experiments.”
“Under heat stress, however, Hino developed significantly greater chalkiness (76%) than Kuma (53%).”
“this result is similar to a previous report that the grain appearance quality of Kuma was about 20% greater than that of Hino under heat stress.”
“That in Hino was upregulated significantly under heat stress, to 17.75× the control (Fig. 2A).”
“That in Kuma was also upregulated (non-significantly), to 8.66× the control (Fig. 2A).”
“Kuma (but not Hino) had significant hypermethylation under heat stress, suppressing expression.”
“Consequently, plants of the methylated groups of both crosses developed significantly less chalky grains (~40%) than non-methylated groups (~60%) under heat stress.”
“DNA hypermethylation of the OsAmy3E promoter in the heat-stress-tolerant Kuma suppressed OsAmy3E expression and reduced grain chalkiness more than in the heat-stress-sensitive Hino.”
“Nakata, M. et al. High temperature-induced expression of rice α-amylases in developing endosperm produces chalky grains.”
