Reduction in organ–organ friction is critical for corolla elongation in morning glory

Ayaka Shimoki, Satoru Tsugawa, Keiichiro Ohashi, Masahito Toda, Akiteru Maeno, Tomoaki Sakamoto, Seisuke Kimura, Takashi Nobusawa, Mika Nagao, Eiji Nitasaka, Taku Demura, Kiyotaka Okada, Seiji Takeda

研究成果: ジャーナルへの寄稿学術誌査読

1 被引用数 (Scopus)


In complex structures such as flowers, organ–organ interactions are critical for morphogenesis. The corolla plays a central role in attracting pollinators: thus, its proper development is important in nature, agriculture, and horticulture. Although the intraorgan mechanism of corolla development has been studied, the importance of organ–organ interactions during development remains unknown. Here, using corolla mutants of morning glory described approximately 200 years ago, we show that glandular secretory trichomes (GSTs) regulate floral organ interactions needed for corolla morphogenesis. Defects in GST development in perianth organs result in folding of the corolla tube, and release of mechanical stress by sepal removal restores corolla elongation. Computational modeling shows that the folding occurs because of buckling caused by mechanical stress from friction at the distal side of the corolla. Our results suggest a novel function of GSTs in regulating the physical interaction of floral organs for macroscopic morphogenesis of the corolla.

ジャーナルCommunications Biology
出版ステータス出版済み - 12月 2021

!!!All Science Journal Classification (ASJC) codes

  • 医学(その他)
  • 生化学、遺伝学、分子生物学(全般)
  • 農業および生物科学(全般)


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