期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 111, 期 52, 页码 18787-18792出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1412274111
关键词
seed dormancy; temperature; germination; transgenerational; seed coat
资金
- Biotechnology and Biological Sciences Research Council [BB/J000949/1, BB/J00216X/1]
- Royal Society University Research Fellowship
- Wellcome Trust Institutional Strategic Support Award [WT097835MF]
- BBSRC [BB/J00216X/1, BB/J000949/1, BB/L003198/1, BB/F011652/1, BB/J000949/2] Funding Source: UKRI
- Biotechnology and Biological Sciences Research Council [BB/F011652/1, BB/J000949/2, BB/J000949/1, BB/J00216X/1, BB/L003198/1] Funding Source: researchfish
Seasonal behavior is important for fitness in temperate environments but it is unclear how progeny gain their initial seasonal entrainment. Plants use temperature signals to measure time of year, and changes to life histories are therefore an important consequence of climate change. Here we show that in Arabidopsis the current and prior temperature experience of the mother plant is used to control germination of progeny seeds, via the activation of the florigen Flowering Locus T (FT) in fruit tissues. We demonstrate that maternal past and current temperature experience are transduced to the FT locus in silique phloem. In turn, FT controls seed dormancy through inhibition of proanthocyanidin synthesis in fruits, resulting in altered seed coat tannin content. Our data reveal that maternal temperature history is integrated through FT in the fruit to generate a metabolic signal that entrains the behavior of progeny seeds according to time of year.
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