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The H3K79 methylase DOT1, unreported in photosynthetic plants, exists in Alexandrium pacificum and participates in its growth regulation. | LitMetric

The H3K79 methylase DOT1, unreported in photosynthetic plants, exists in Alexandrium pacificum and participates in its growth regulation.

Mar Pollut Bull

Key Laboratory of Marine Genetics and Breeding of Ministry of Education of China, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China. Electronic address:

Published: May 2023

AI Article Synopsis

Article Abstract

Alexandrium pacificum is one of the typical toxic dinoflagellate species leading to harmful algal blooms (HABs). Histone modifications play key roles in many cellular events, but little is known about the mechanism of regulating A. pacificum growth. In this study, a total of 30 proteins containing the DOT1 domain were identified and analyzed. Some ApDOT1 gene expression levels were significantly influenced by light intensity and nitrogen by expression analysis and RT-qPCR validation. The enrichment of H3K79 methylation also showed a similar trend. In addition, ApDOT1.9 protein was proved to have the function of catalyzing the methylation of H3K79 by homology analysis and in vitro methylation. The results suggested that ApDOT1 proteins and H3K79 methylation were involved in responding to harmful algal blooms-inducing conditions (high light intensity, and high nitrogen), which provided basic information for further exploration of the regulatory mechanism of histone methylation in A. pacificum rapid growth.

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Source
http://dx.doi.org/10.1016/j.marpolbul.2023.114867DOI Listing

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