articleNature CommunicationsJan 14, 2026GOLD OA

Variable temperature processing by plasmodesmata regulates robust bud dormancy release

SKShashank K. PandeyTSTatiana Sousa MoraesANAswin NairBABibek AryalAAAbdul Azeez

Umeå Plant Science Centre · Centre National de la Recherche Scientifique · +7 more institutions

PubMed
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Abstract

Dormancy is a key mechanism in perennial plants in boreal and temperate regions, protecting buds from winter damage by repressing precocious bud break before spring onset. How plants robustly time dormancy release under fluctuating environments remains unknown. Here, we show that, rather than simply sensing cold duration, buds leverage warm spikes to sense winter progression and time dormancy release. This timing mechanism is mediated by previously unrecognized regulation of plasmodesmata by warm spikes acting through tree ortholog of FLOWERING LOCUS T (FT1) and the gibberellic acid pathway. Our results reveal FT1 as a previously unrecognized, suppressor of callose levels and show that warm spikes repress cold…

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5
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66.19
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100%
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16

Topics & keywords

Topics
Keywords
  • Dormancy
  • Plasmodesma
  • Chilling requirement
  • Callose
  • Annual growth cycle of grapevines
  • Gibberellic acid
  • Flowering Locus C
  • Perennial plant
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