F. Balao, M. Medrano, P. Bazaga, O. Paun, C. Alonso
{"title":"实验性种子去甲基化后甲基组的长期变化及其与经常性水分胁迫的相互作用","authors":"F. Balao, M. Medrano, P. Bazaga, O. Paun, C. Alonso","doi":"10.1111/plb.13713","DOIUrl":null,"url":null,"abstract":"<jats:list list-type=\"bullet\"> <jats:list-item>The frequencies and lengths of drought periods are increasing in subtropical and temperate regions worldwide. Epigenetic responses to water stress could be key for plant resilience to these largely unpredictable challenges. Experimental DNA demethylation, together with application of a stress factor is an appropriate strategy to reveal the contribution of epigenetics to plant responses to stress.</jats:list-item> <jats:list-item>We analysed leaf cytosine methylation changes in adult plants of the annual Mediterranean herb, <jats:italic>Erodium cicutarium</jats:italic>, in a greenhouse, after seed demethylation with 5‐Azacytidine and/or recurrent water stress. We used bisulfite RADseq (BsRADseq) and a newly reported reference genome for <jats:italic>E. cicutarium</jats:italic> to characterize methylation changes in a 2 × 2 factorial design, controlling for plant relatedness.</jats:list-item> <jats:list-item>In the long term, 5‐Azacytidine treatment alone caused both hypo‐ and hyper‐methylation at individual cytosines, with substantial hypomethylation in CG contexts. In control conditions, drought resulted in a decrease in methylation in all but CHH contexts. In contrast, the genome of plants that experienced recurrent water stress and had been treated with 5‐Azacytidine increased DNA methylation level by ca. 5%.</jats:list-item> <jats:list-item>Seed demethylation and recurrent drought produced a highly significant interaction in terms of global and context‐specific cytosine methylation. Most methylation changes occurred around genic regions and within Transposable Elements. The annotation of these Differentially Methylated Regions associated with genes included several with a potential role in stress responses (e.g., PAL, CDKC, and ABCF), confirming an epigenetic contribution in response to stress at the molecular level.</jats:list-item> </jats:list>","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":null,"pages":null},"PeriodicalIF":4.2000,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Long‐term methylome changes after experimental seed demethylation and their interaction with recurrent water stress in Erodium cicutarium (Geraniaceae)\",\"authors\":\"F. Balao, M. Medrano, P. Bazaga, O. Paun, C. Alonso\",\"doi\":\"10.1111/plb.13713\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<jats:list list-type=\\\"bullet\\\"> <jats:list-item>The frequencies and lengths of drought periods are increasing in subtropical and temperate regions worldwide. Epigenetic responses to water stress could be key for plant resilience to these largely unpredictable challenges. Experimental DNA demethylation, together with application of a stress factor is an appropriate strategy to reveal the contribution of epigenetics to plant responses to stress.</jats:list-item> <jats:list-item>We analysed leaf cytosine methylation changes in adult plants of the annual Mediterranean herb, <jats:italic>Erodium cicutarium</jats:italic>, in a greenhouse, after seed demethylation with 5‐Azacytidine and/or recurrent water stress. We used bisulfite RADseq (BsRADseq) and a newly reported reference genome for <jats:italic>E. cicutarium</jats:italic> to characterize methylation changes in a 2 × 2 factorial design, controlling for plant relatedness.</jats:list-item> <jats:list-item>In the long term, 5‐Azacytidine treatment alone caused both hypo‐ and hyper‐methylation at individual cytosines, with substantial hypomethylation in CG contexts. In control conditions, drought resulted in a decrease in methylation in all but CHH contexts. In contrast, the genome of plants that experienced recurrent water stress and had been treated with 5‐Azacytidine increased DNA methylation level by ca. 5%.</jats:list-item> <jats:list-item>Seed demethylation and recurrent drought produced a highly significant interaction in terms of global and context‐specific cytosine methylation. Most methylation changes occurred around genic regions and within Transposable Elements. The annotation of these Differentially Methylated Regions associated with genes included several with a potential role in stress responses (e.g., PAL, CDKC, and ABCF), confirming an epigenetic contribution in response to stress at the molecular level.</jats:list-item> </jats:list>\",\"PeriodicalId\":220,\"journal\":{\"name\":\"Plant Biology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.2000,\"publicationDate\":\"2024-09-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Plant Biology\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.1111/plb.13713\",\"RegionNum\":3,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"PLANT SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plant Biology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1111/plb.13713","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
Long‐term methylome changes after experimental seed demethylation and their interaction with recurrent water stress in Erodium cicutarium (Geraniaceae)
The frequencies and lengths of drought periods are increasing in subtropical and temperate regions worldwide. Epigenetic responses to water stress could be key for plant resilience to these largely unpredictable challenges. Experimental DNA demethylation, together with application of a stress factor is an appropriate strategy to reveal the contribution of epigenetics to plant responses to stress.We analysed leaf cytosine methylation changes in adult plants of the annual Mediterranean herb, Erodium cicutarium, in a greenhouse, after seed demethylation with 5‐Azacytidine and/or recurrent water stress. We used bisulfite RADseq (BsRADseq) and a newly reported reference genome for E. cicutarium to characterize methylation changes in a 2 × 2 factorial design, controlling for plant relatedness.In the long term, 5‐Azacytidine treatment alone caused both hypo‐ and hyper‐methylation at individual cytosines, with substantial hypomethylation in CG contexts. In control conditions, drought resulted in a decrease in methylation in all but CHH contexts. In contrast, the genome of plants that experienced recurrent water stress and had been treated with 5‐Azacytidine increased DNA methylation level by ca. 5%.Seed demethylation and recurrent drought produced a highly significant interaction in terms of global and context‐specific cytosine methylation. Most methylation changes occurred around genic regions and within Transposable Elements. The annotation of these Differentially Methylated Regions associated with genes included several with a potential role in stress responses (e.g., PAL, CDKC, and ABCF), confirming an epigenetic contribution in response to stress at the molecular level.
期刊介绍:
Plant Biology is an international journal of broad scope bringing together the different subdisciplines, such as physiology, molecular biology, cell biology, development, genetics, systematics, ecology, evolution, ecophysiology, plant-microbe interactions, and mycology.
Plant Biology publishes original problem-oriented full-length research papers, short research papers, and review articles. Discussion of hot topics and provocative opinion articles are published under the heading Acute Views. From a multidisciplinary perspective, Plant Biology will provide a platform for publication, information and debate, encompassing all areas which fall within the scope of plant science.