Parental and Environmental Control of Seed Dormancy in Arabidopsis thaliana

被引:57
作者
Iwasaki, Mayumi [1 ]
Penfield, Steven [2 ]
Lopez-Molina, Luis [1 ,3 ]
机构
[1] Univ Geneva, Dept Bot & Plant Biol, Geneva, Switzerland
[2] John Innes Ctr, Dept Crop Genet, Norwich Res Pk, Norwich, Norfolk, England
[3] Univ Geneva, Inst Genet & Genom Geneva iGE3, Geneva, Switzerland
基金
英国生物技术与生命科学研究理事会;
关键词
ENDOGENOUS ABSCISIC-ACID; DIRECTED DNA METHYLATION; 2C PROTEIN PHOSPHATASES; FLOWERING-LOCUS-C; GENE-EXPRESSION; HISTONE METHYLATION; MESSENGER-RNA; LIFE-CYCLE; GERMINATION; TEMPERATURE;
D O I
10.1146/annurev-arplant-102820-090750
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Seed dormancy-the absence of seed germination under favorable germination conditions-is a plant trait that evolved to enhance seedling survival by avoiding germination under unsuitable environmental conditions. In Arabidopsis, dormancy levels are influenced by the seed coat composition, while the endosperm is essential to repress seed germination of dormant seeds upon their imbibition. Recent research has shown that the mother plant modulates its progeny seed dormancy in response to seasonal temperature changes by changing specific aspects of seed coat and endosperm development. This process involves genomic imprinting by means of epigenetic marks deposited in the seed progeny and regulators previously known to regulate flowering time. This review discusses and summarizes these discoveries and provides an update on our present understanding of the role of DOG1 and abscisic acid, two key contributors to dormancy.
引用
收藏
页码:355 / 378
页数:24
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