Hyperosmotic stress memory in Arabidopsis is mediated by distinct epigenetically labile sites in the genome and is restricted in the male germline by DNA glycosylase activity

Inducible epigenetic changes in eukaryotes are believed to enable rapid adaptation to environmental fluctuations. We have found distinct regions of the Arabidopsis genome that are susceptible to DNA (de)methylation in response to hyperosmotic stress. The stress-induced epigenetic changes are associated with conditionally heritable adaptive phenotypic stress responses. However, these stress responses are primarily transmitted to the next generation through the female lineage due to widespread DNA glycosylase activity in the male germline, and extensively reset in the absence of stress. Using the CNI1/ATL31 locus as an example, we demonstrate that epigenetically targeted sequences function as distantly-acting control elements of antisense long non-coding RNAs, which in turn regulate targeted gene expression in response to stress. Collectively, our findings reveal that plants use a highly dynamic maternal 'short-term stress memory' with which to respond to adverse external conditions. This transient memory relies on the DNA methylation machinery and associated transcriptional changes to extend the phenotypic plasticity accessible to the immediate offspring.

The restaurant and food service industry in Puerto Rico : data pertinent to the establishment of minimum wage rates under the Fair labor standards act for employment newly covered by the amendments of 1966 /

"WH67-669."

Potential industrial carcinogens and mutagens /

Mode of access: Internet.

Data pertinent to the review of minimum wage rates under the Fair Labor Standards Act in the restaurant and food service industry in Puerto Rico /

"September 1968."

Reactor safety conference, jointly sponsored by American Nuclear Society, Atomic Industrial Forum [and] United States Atomic Energy Commission, New York City, October 31, 1957.

Cover title.

Industrial supply and distribution in Puerto Rico.

On cover: Prepared by the Economic Development Administration of the Commonwealth of Puerto Rico for the Small Business Administration, Washington.

Industrial process and space heat from nuclear reactors : a literature search /

"October 1959."

Industrial reuse and recycle of wastewaters : literature review /

Mode of access: Internet.

Latin America timber trends and prospects [by] Economic Commission for Latin America [and] Food and Agriculture Organization of the United Nations.

"Errata": 1 leaf inserted.