2016
DOI: 10.1073/pnas.1601256113
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A class II KNOX gene, KNOX4 , controls seed physical dormancy

Abstract: Physical dormancy of seed is an adaptive trait that widely exists in higher plants. This kind of dormancy is caused by a waterimpermeable layer that blocks water and oxygen from the surrounding environment and keeps embryos in a viable status for a long time. Most of the work on hardseededness has focused on morphological structure and phenolic content of seed coat. The molecular mechanism underlying physical dormancy remains largely elusive. By screening a large number of Tnt1 retrotransposontagged Medicago t… Show more

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Cited by 62 publications
(65 citation statements)
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“…However, this reduction in cuticle thickness was not observed in the 2014 collection (Figure 3e). These results are different from those obtained by Chai et al (2016), who suggested that palisade cell size and cuticle thickness may be responsible for dormancy, due to water impermeability. Dormant seeds had a dense light line, a thicker cuticle and larger palisade cells than non-dormant seeds.…”
Section: Resultscontrasting
confidence: 99%
“…However, this reduction in cuticle thickness was not observed in the 2014 collection (Figure 3e). These results are different from those obtained by Chai et al (2016), who suggested that palisade cell size and cuticle thickness may be responsible for dormancy, due to water impermeability. Dormant seeds had a dense light line, a thicker cuticle and larger palisade cells than non-dormant seeds.…”
Section: Resultscontrasting
confidence: 99%
“…Those findings strongly support the significance of HLFA for regulation of water uptake by seed and early stages of germination. Our results are in agreement to the recent work of Chai et al that studied the differences between Medicago truncatula wild (D) and mutant (N) seeds and revealed significant reductions in content of long chain acids (especially 18:2 18–OH at individual monomer level) in non-dormant mutants [ 35 ].…”
Section: Resultssupporting
confidence: 93%
“…Moreover, the seed and its constituents had potential antidiabetic activity and the possible mechanism was through increasing the insulin-provoked glucose uptake and inhibiting the protein tyrosine phosphatases 1B and á -glucosidase activities in human HepG2 cells [ 12 ]. The seed of C. obtusifolia contained a variety of bioactive anthraquinones, which were mainly responsible for the pharmacological action ascribed to them [ 7 , 13 , 14 , 15 ]. It was reported by the Chinese Pharmacopeia in 2015 that aurantio-obtusin, a kind of anthraquinone, was the most significant active gradient and regarded as the quality marker to evaluate the pharmaceutical value of C. obtusifolia .…”
Section: Introductionmentioning
confidence: 99%