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Molecular Network for Regulation of Ovule Number in Plants

Qadir, Muslim and Wang, Xinfa and Shah, Syed Rehmat Ullah and Shah, Syed rehmat ullah and Zhou, Xue-Rong and Shi, Jiaqin and Wang, Hanzhong (2021). Molecular Network for Regulation of Ovule Number in Plants. International Journal of Molecular Sciences. 22 , 12965
[Article Review/Survey]

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In seed-bearing plants, the ovule (“small egg”) is the organ within the gynoecium that develops into a seed after fertilization. The gynoecium located in the inner compartment of the flower turns into a fruit. The number of ovules in the ovary determines the upper limit or the potential of seed number per fruit in plants, greatly affecting the final seed yield. Ovule number is an important adaptive characteristic for plant evolution and an agronomic trait for crop improvement. Therefore, understanding the mechanism and pathways of ovule number regulation becomes a significant research aspect in plant science. This review summarizes the ovule number regulators and their regulatory mechanisms and pathways. Specially, an integrated molecular network for ovule number regulation is constructed, in which phytohormones played a central role, followed by transcription factors, enzymes, other protein and micro-RNA. Of them, AUX, BR and CK are positive regulator of ovule number, whereas GA acts negatively on it. Interestingly, many ovule number regulators have conserved functions across several plant taxa, which should be the targets of genetic improvement via breeding or gene editing. Many ovule number regulators identified to date are involved in the diverse biological process, such as ovule primordia formation, ovule initiation, patterning, and morphogenesis. The relations between ovule number and related characteristics/traits especially of gynoecium/fruit size, ovule fertility, and final seed number, as well as upcoming research questions, are also discussed. In summary, this review provides a general overview of the present finding in ovule number regulation, which represents a more comprehensive and in-depth cognition on it.

Authors/Creators:Qadir, Muslim and Wang, Xinfa and Shah, Syed Rehmat Ullah and Shah, Syed rehmat ullah and Zhou, Xue-Rong and Shi, Jiaqin and Wang, Hanzhong
Title:Molecular Network for Regulation of Ovule Number in Plants
Series Name/Journal:International Journal of Molecular Sciences
Year of publishing :2021
Article number:12965
Number of Pages:17
Publication Type:Article Review/Survey
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 404 Agricultural Biotechnology > Plant Biotechnology
Keywords:ovule number genes, molecular network, auxin, cytokinins, brassinosteroids, gibberellin, transcription factors, micro-RNA
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Type of IDID
ID Code:26402
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
Deposited By: SLUpub Connector
Deposited On:23 Dec 2021 07:25
Metadata Last Modified:23 Dec 2021 07:31

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