EXPANSIN15 is involved in flower and fruit development in Arabidopsis

Key message EXPANSIN15 is involved in petal cell morphology and size, the fusion of the medial tissues in the gynoecium and expansion of fruit valve cells. It genetically interacts with SPATULA and FRUITFULL . Cell expansion is fundamental for the formation of plant tissues and organs, contributing...

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Published in:Plant reproduction 2024-06, Vol.37 (2), p.259-270
Main Authors: Bernal-Gallardo, Judith Jazmin, González-Aguilera, Karla L., de Folter, Stefan
Format: Article
Language:English
Subjects:
Agriculture
Arabidopsis
Biomedical and Life Sciences
Cell Biology
Cell morphology
Cell size
Cytology
Flowers
Fruits
Gas expanders
Gene expression
Life Sciences
Morphology
Original
Original Article
Petals
Plant Sciences
Plant tissues
Size determination
Spatulas
Stigmas (botany)
Transcription factors
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Summary:Key message EXPANSIN15 is involved in petal cell morphology and size, the fusion of the medial tissues in the gynoecium and expansion of fruit valve cells. It genetically interacts with SPATULA and FRUITFULL . Cell expansion is fundamental for the formation of plant tissues and organs, contributing to their final shape and size during development. To better understand this process in flower and fruit development, we have studied the EXPANSIN15 ( EXPA15) gene, which showed expression in petals and in the gynoecium. By analyzing expa15 mutant alleles, we found that EXPA15 is involved in petal shape and size determination, by affecting cell morphology and number. EXPA15 also has a function in fruit size, by affecting cell size and number. Furthermore, EXPA15 promotes fusion of the medial tissues in the gynoecium. In addition, we observed genetic interactions with the transcription factors SPATULA (SPT) and FRUITFULL (FUL) in gynoecium medial tissue fusion, style and stigma development and fruit development in Arabidopsis. These findings contribute to the importance of EXPANSINS in floral and fruit development in Arabidopsis.
ISSN:2194-7953
2194-7961
2194-7961
DOI:10.1007/s00497-023-00493-4