<b>The control of carpel determinacy pathway leads to sex determination</b> <b>in cucurbits</b>.

Autor: Zhang S; Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2); 91190 Gif sur Yvette, France., Tan FQ; Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2); 91190 Gif sur Yvette, France., Chung CH; Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2); 91190 Gif sur Yvette, France., Slavkovic F; Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2); 91190 Gif sur Yvette, France., Devani RS; Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2); 91190 Gif sur Yvette, France., Troadec C; Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2); 91190 Gif sur Yvette, France., Marcel F; Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2); 91190 Gif sur Yvette, France., Morin H; Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2); 91190 Gif sur Yvette, France., Camps C; Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2); 91190 Gif sur Yvette, France., Gomez Roldan MV; Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2); 91190 Gif sur Yvette, France., Benhamed M; Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2); 91190 Gif sur Yvette, France., Dogimont C; INRAE, Génétique et Amélioration des Fruits et Légumes (GAFL), 84143 Montfavet, France., Boualem A; Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2); 91190 Gif sur Yvette, France., Bendahmane A; Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2); 91190 Gif sur Yvette, France.
Jazyk: angličtina
Zdroj: Science (New York, N.Y.) [Science] 2022 Nov 04; Vol. 378 (6619), pp. 543-549. Date of Electronic Publication: 2022 Nov 03.
DOI: 10.1126/science.add4250
Abstrakt: Male and female unisexual flowers evolved from hermaphroditic ancestors, and control of flower sex is useful for plant breeding. We isolated a female-to-male sex transition mutant in melon and identified the causal gene as the carpel identity gene <i>CRABS CLAW (CRC)</i>. We show that the master regulator of sex determination in cucurbits, the transcription factor <i>WIP1</i> whose expression orchestrates male flower development, recruits the corepressor TOPLESS to the <i>CRC</i> promoter to suppress its expression through histone deacetylation. Impairing TOPLESS-WIP1 physical interaction leads to <i>CRC</i> expression, carpel determination, and consequently the expression of the stamina inhibitor, the aminocyclopropane-1-carboxylic acid synthase 7 (<i>CmACS7</i>), leading to female flower development. Our findings suggest that sex genes evolved to interfere with flower meristematic function, leading to unisexual flower development.
Databáze: MEDLINE
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