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http://223.31.159.10:8080/jspui/handle/123456789/980
Title: | Transcription factor OsNF-YB9 regulates reproductive growth and development in rice |
Authors: | Das, Sweta Parida, Swarup K. Agarwal, Pinky Tyagi, Akhilesh K. |
Keywords: | Floral development Heading date Meristem NF-Y Reproductive development Rice |
Issue Date: | 2019 |
Publisher: | Springer Nature Publishing AG |
Citation: | Planta, 250: 1849–1865 |
Abstract: | Nuclear Factor-Y (NF-Y) family of transcription factors takes part in many aspects of growth and development in eukaryotes. They have been classifed into three subunit classes, namely, NF-YA, NF-YB and NF-YC. In plants, this transcription factor family is much diverged and takes part in several developmental processes and stress. We investigated NF-Y subunit genes of rice (Oryza sativa) and found OsNF-YB9 as the closest homologue of LEAFY COTYLEDON1. OsNF-YB9 delayed the heading date when ectopically expressed in rice. Expression of several heading date regulating genes such as Hd1, Ehd1, Hd3a and RFT1 were altered. OsNF-YB9 overexpression also resulted in morphological defects in the reproductive organs and led to pseudovivipary. OsNF-YB9 interacted with MADS1, a key regulator of foral development. This NF-Y subunit acted upstream to several transcription factors as well as signalling proteins involved in brassinosteroid and gibberellic acid metabolism and cell cycle. OsNF-YB9 and OsNF-YC12 interacted in planta and the latter also delayed heading in rice upon overexpression suggesting its involvement in a similar pathway. Our data provide new insights into the rice heading date pathway integrating these OsNF-Y subunit members to the network. These features can be exploited to improve vegetative growth and yield of rice plants in future. |
Description: | Accepted date: 26 August 2019 |
URI: | http://223.31.159.10:8080/jspui/handle/123456789/980 |
ISSN: | 1432-2048 |
Appears in Collections: | Institutional Publications |
Files in This Item:
File | Description | Size | Format | |
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Agarwal P_2019_2.pdf Restricted Access | 7.17 MB | Adobe PDF | View/Open Request a copy |
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