An integrative model of the control of ovule primordia formation

F. Galbiati; D. Sihna Roy; S. Simonini; M. Cucinotta; L. Ceccato; C. Cuesta; M. Simaskova; E. Benkova; Y. Kamiuchi; M. Aida; D. Weijers; R. Simon; S. Masiero; L. Colombo

doi:10.1111/tpj.12309

An integrative model of the control of ovule primordia formation

F. Galbiati, D. Sihna Roy, S. Simonini, M. Cucinotta, L. Ceccato, C. Cuesta, M. Simaskova, E. Benkova, Y. Kamiuchi, M. Aida, D. Weijers, R. Simon, S. Masiero, L. Colombo

Biochemistry

Research output: Contribution to journal › Article › Academic › peer-review

101 Citations (Scopus)

Abstract

Upon hormonal signaling, ovules develop as lateral organs from the placenta. Ovule numbers ultimately determine the number of seeds that develop, and thereby contribute to the final seed yield in crop plants. We demonstrate here that CUP-SHAPED COTYLEDON 1 (CUC1), CUC2 and AINTEGUMENTA (ANT) have additive effects on ovule primordia formation. We show that expression of the CUC1 and CUC2 genes is required to redundantly regulate expression of PINFORMED1 (PIN1), which in turn is required for ovule primordia formation. Furthermore, our results suggest that the auxin response factor MONOPTEROS (MP/ARF5) may directly bind ANT, CUC1 and CUC2 and promote their transcription. Based on our findings, we propose an integrative model to describe the molecular mechanisms of the early stages of ovule development.

Original language	English
Pages (from-to)	446-455
Journal	The Plant Journal
Volume	76
Issue number	3
DOIs	https://doi.org/10.1111/tpj.12309
Publication status	Published - 2013

Keywords

dependent auxin gradients
arabidopsis-thaliana
transcription factor
pattern-formation
early sporogenesis
direct target
gene
cytokinin
gynoecium
aintegumenta

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10.1111/tpj.12309

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title = "An integrative model of the control of ovule primordia formation",

abstract = "Upon hormonal signaling, ovules develop as lateral organs from the placenta. Ovule numbers ultimately determine the number of seeds that develop, and thereby contribute to the final seed yield in crop plants. We demonstrate here that CUP-SHAPED COTYLEDON 1 (CUC1), CUC2 and AINTEGUMENTA (ANT) have additive effects on ovule primordia formation. We show that expression of the CUC1 and CUC2 genes is required to redundantly regulate expression of PINFORMED1 (PIN1), which in turn is required for ovule primordia formation. Furthermore, our results suggest that the auxin response factor MONOPTEROS (MP/ARF5) may directly bind ANT, CUC1 and CUC2 and promote their transcription. Based on our findings, we propose an integrative model to describe the molecular mechanisms of the early stages of ovule development.",

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author = "F. Galbiati and {Sihna Roy}, D. and S. Simonini and M. Cucinotta and L. Ceccato and C. Cuesta and M. Simaskova and E. Benkova and Y. Kamiuchi and M. Aida and D. Weijers and R. Simon and S. Masiero and L. Colombo",

year = "2013",

doi = "10.1111/tpj.12309",

language = "English",

volume = "76",

pages = "446--455",

journal = "The Plant Journal",

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T1 - An integrative model of the control of ovule primordia formation

AU - Galbiati, F.

AU - Sihna Roy, D.

AU - Simonini, S.

AU - Cucinotta, M.

AU - Ceccato, L.

AU - Cuesta, C.

AU - Simaskova, M.

AU - Benkova, E.

AU - Kamiuchi, Y.

AU - Aida, M.

AU - Weijers, D.

AU - Simon, R.

AU - Masiero, S.

AU - Colombo, L.

PY - 2013

Y1 - 2013

N2 - Upon hormonal signaling, ovules develop as lateral organs from the placenta. Ovule numbers ultimately determine the number of seeds that develop, and thereby contribute to the final seed yield in crop plants. We demonstrate here that CUP-SHAPED COTYLEDON 1 (CUC1), CUC2 and AINTEGUMENTA (ANT) have additive effects on ovule primordia formation. We show that expression of the CUC1 and CUC2 genes is required to redundantly regulate expression of PINFORMED1 (PIN1), which in turn is required for ovule primordia formation. Furthermore, our results suggest that the auxin response factor MONOPTEROS (MP/ARF5) may directly bind ANT, CUC1 and CUC2 and promote their transcription. Based on our findings, we propose an integrative model to describe the molecular mechanisms of the early stages of ovule development.

AB - Upon hormonal signaling, ovules develop as lateral organs from the placenta. Ovule numbers ultimately determine the number of seeds that develop, and thereby contribute to the final seed yield in crop plants. We demonstrate here that CUP-SHAPED COTYLEDON 1 (CUC1), CUC2 and AINTEGUMENTA (ANT) have additive effects on ovule primordia formation. We show that expression of the CUC1 and CUC2 genes is required to redundantly regulate expression of PINFORMED1 (PIN1), which in turn is required for ovule primordia formation. Furthermore, our results suggest that the auxin response factor MONOPTEROS (MP/ARF5) may directly bind ANT, CUC1 and CUC2 and promote their transcription. Based on our findings, we propose an integrative model to describe the molecular mechanisms of the early stages of ovule development.

KW - dependent auxin gradients

KW - arabidopsis-thaliana

KW - transcription factor

KW - pattern-formation

KW - early sporogenesis

KW - direct target

KW - gene

KW - cytokinin

KW - gynoecium

KW - aintegumenta

U2 - 10.1111/tpj.12309

DO - 10.1111/tpj.12309

M3 - Article

SN - 0960-7412

VL - 76

SP - 446

EP - 455

JO - The Plant Journal

JF - The Plant Journal

IS - 3

ER -

An integrative model of the control of ovule primordia formation

Abstract

Keywords

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