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On January 31st, zhu Health Research Group, Shanghai Plant Adversity Biology Research Center, Chinese Academy of Sciences, published online in Nature Communications with the a-based study of the a-naturally occurring epiallele associates with a free leaf senescence and local climate climate fit in Arabidopsis accessions.
the study used classical genetic and correlation analysis to identify an episometric allele that regulates the aging of the blades of nature, and gained insight into the mechanisms of production and the potential to participate in adaptive evolution.
extreme diversity between life and organisms, whether large enough to the whole higher plant or mammal, or as small as the amoeba or humans.
high degree of diversity is confusing and one of the most important frontier issues raised by Science.
Darwin's theory of evolution provides a reasonable explanation of the diversity of life, which provides a solid basis for populations to adapt to complex and changing environments.
modern genetics reveals that variations in DNA sequences are the cause of phenotype diversity in the same species.
With scientific advances, many genetic phenomena unrelated to DNA sequences have been discovered, known as epigenetics, such as DNA methylation.
Although epigenetics is important for the growth and development of individuals, the study of their role in these processes is limited.
existing research has found several examples of epigenetics regulating the diversity of the surface of nature's species, such as the flower type of willow fish and the sex of melons.
these examples are few and have not been found to be related to the adaptation of the local environment.
in the study, researchers identified a transposon and named NMR19, whose methylation and position in the genome were diverse, using analysis of 140 different ecological types of amoeba.
be further classified as NMR19-4 and NMR19-16 based on differences in location.
methylation of NMR19-4 can inhibit the expression of PPH, the gene that regulates leaf aging, thereby affecting the aging of different ecological types of leaves in nature. The methylation difference of nMR19-4 in
is autostable.
molecular evolution analysis shows that NMR19-4 originated in the rheoscos of NMR19-16, about 37-98 million years ago, after the a.thaliana and A.lyrata differences.
the methylation of NMR19-4 was significantly negatively correlated with the temperature during the dry season, suggesting that NMR19-4 is a climate-associated epialle, and that it may help adapt the pontomy to local environmental changes by fine-tuning the expression of PPH.
the study not only identified a new epiallele, but also gained insight into the generation mechanism of the epialele and the potential to participate in adaptive evolution. He Li, a doctoral student at the
Anti-Reversal Center, and Wu Wenwu, an associate researcher, are co-authors, and zhang, an associate researcher, and Zhu Health, a researcher, are co-authors, and the research work has been funded by the Chinese Academy of Sciences.
.