RRC ID 66116
Author Shimoki A, Tsugawa S, Ohashi K, Toda M, Maeno A, Sakamoto T, Kimura S, Nobusawa T, Nagao M, Nitasaka E, Demura T, Okada K, Takeda S.
Title Reduction in organ-organ friction is critical for corolla elongation in morning glory.
Journal Commun Biol
Abstract 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.
Volume 4(1)
Pages 285
Published 2021-3-5
DOI 10.1038/s42003-021-01814-x
PII 10.1038/s42003-021-01814-x
PMID 33674689
PMC PMC7935917
MeSH Computer Simulation Flowers / genetics Flowers / growth & development* Friction Ipomoea nil / genetics Ipomoea nil / growth & development* Models, Biological Mutation Plant Development* Plants, Genetically Modified / genetics Plants, Genetically Modified / growth & development* Stress, Mechanical Trichomes / genetics Trichomes / growth & development*
IF 4.165
Morning Glory Q510 Q513 Q531 Q532 Q533 Q1017 Q1089 Q1096 Q1097 Q1141