Expression profiling of development related genes in rice plants ectopically expressing AtTOR

From National Research Council Canada

Download	View accepted manuscript: Expression profiling of development related genes in rice plants ectopically expressing AtTOR (PDF, 842 KB)
DOI	Resolve DOI: https://doi.org/10.1080/15592324.2017.1362519
Author	Search for: Bakshi, Achala; Search for: Moin, Mazahar; Search for: Datla, Raju¹; Search for: Kirti, P. B.
Name affiliation	National Research Council Canada. Aquatic and Crop Resource Development
Format	Text
Type	Article
Journal title	Plant Signaling and Behavior
ISSN	1559-2316 1559-2324
Subject	TOP; transcription factor; cell proliferation; shoots apical meristem
Abstract	Expression analysis of genes associated with development at different growth stages such as shoot apical meristem (SAM), root apical meristem (RAM), shoot and root tissues 10 DAG, flowers and grains of two high expression transgenic lines of rice ectopically expressing AtTOR revealed the involvement of AtTOR in transcriptional regulation of these genes. We have observed that in the SAM of these two selected lines, TR-2.24 and TR-15.1, OsFON1 and OsFON4 (orthologs of AtCLV1 and AtCLV3, respectively), OsKNOX2, OsKNOX3 and OsWOX3 became up-regulated. The up-regulation of OsFON1 and OsFON4 is likely to be involved in the maintenance of effective meristem size of the inflorescence and phyllotaxis. The grains and spikes of transgenic plants exhibited enhanced transcript levels of OsMADS1, OsMADS6, and OsMADS29 further implicating the role of TOR in modulating the expression of the genes in rice grain formation and development. Moreover, the up-regulation of auxin transporter, PIN1c in RAM and roots derived from seedlings 10 DAG showed the involvement of TOR in root development. The seeds of two high expression lines also showed increased expression of OSE2 and GAMYB transcription factors involved in seed development. In summary, the present study, by heterologous expression of AtTOR in rice, demonstrated the involvement of TOR in regulating genes involved in various growth and developmental stages of rice plant and also in photosynthesis, productivity related functions and water-use efficiency.
Publication date	2017-08-17
Publisher	Taylor & Francis
Language	English
Peer reviewed	Yes
NRC number	NRC-ACRD-56356
NPARC number	23002128
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Record identifier	1ef043d9-8cc1-4d92-90ed-4633579d45ee
Record created	2017-08-24
Record modified	2019-03-13

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Date modified:: 2020-02-21