Arid
DOI10.1007/s00425-009-1026-z
Histone modifications associated with drought tolerance in the desert plant Zygophyllum dumosum Boiss
Granot, Gila1; Sikron-Persi, Noga1; Gaspan, Ofer1; Florentin, Assa1; Talwara, Susheela1; Paul, Laju K.1; Morgenstern, Yaakov1; Granot, Yigal2; Grafi, Gideon1
通讯作者Grafi, Gideon
来源期刊PLANTA
ISSN0032-0935
EISSN1432-2048
出版年2009
卷号231期号:1页码:27-34
英文摘要

Zygophyllum dumosum Boiss. is a perennial Saharo-Arabian phytogeographical element and a dominant shrub on the rocky limestone southeast-facing slopes of the Negev desert. The plant is highly active during the winter, and semideciduous during the dry summer, i.e., it sheds its leaflets, while leaving the thick, fleshy petiole green and rather active during the dry season. Being resistant to extreme perennial drought, Z. dumosum appears to provide an intriguing model plant for studying epigenetic mechanisms associated with drought tolerance in natural habitats. The transition from the wet to the dry season was accompanied by a significant decrease in nuclear size and with posttranslational modifications of histone H3 N-terminal tail. Dimethylation of H3 at lysine 4 (H3K4)-a modification associated with active gene expression-was found to be high during the wet season but gradually diminished on progression to the dry season. Unexpectedly, H3K9 di- and trimethylation as well as H3K27 di- and trimethylation could not be detected in Z. dumosum; H3K9 monomethylation appears to be prominent in Z. dumosum during the wet but not during the dry season. Contrary to Z. dumosum, H3K9 dimethylation was detected in other desert plants, including Artemisia sieberi, Anabasis articulata and Haloxylon scoparium. Taken together, our results demonstrate dynamic genome organization and unique pattern of histone H3 methylation displayed by Z. dumosum, which could have an adaptive value in variable environments of the Negev desert.


英文关键词Chromatin Desert plant Drought tolerance Epigenetics Histone modification Nuclear size Zygophyllum
类型Article
语种英语
国家Israel
收录类别SCI-E
WOS记录号WOS:000271938900003
WOS关键词DNA METHYLATION ; H3 LYSINE-9 ; NORTHERN NEGEV ; CHROMATIN ; ARABIDOPSIS ; HETEROCHROMATIN ; METHYLTRANSFERASES ; CHROMOSOMES ; GENOME ; DOMAIN
WOS类目Plant Sciences
WOS研究方向Plant Sciences
来源机构Ben-Gurion University of the Negev
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/162279
作者单位1.Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, French Associates Inst Agr & Biotechnol Drylands, IL-84990 Midreshet Ben Gurion, Israel;
2.Interdisciplinary Ctr, IL-84990 Midreshet Sde Boker, Israel
推荐引用方式
GB/T 7714
Granot, Gila,Sikron-Persi, Noga,Gaspan, Ofer,et al. Histone modifications associated with drought tolerance in the desert plant Zygophyllum dumosum Boiss[J]. Ben-Gurion University of the Negev,2009,231(1):27-34.
APA Granot, Gila.,Sikron-Persi, Noga.,Gaspan, Ofer.,Florentin, Assa.,Talwara, Susheela.,...&Grafi, Gideon.(2009).Histone modifications associated with drought tolerance in the desert plant Zygophyllum dumosum Boiss.PLANTA,231(1),27-34.
MLA Granot, Gila,et al."Histone modifications associated with drought tolerance in the desert plant Zygophyllum dumosum Boiss".PLANTA 231.1(2009):27-34.
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