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DC Field | Value | Language |
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dc.contributor.author | Jathar, Vikram | - |
dc.contributor.author | Saini, Kumud | - |
dc.contributor.author | Chauhan, Ashish | - |
dc.contributor.author | Rani, Ruchi | - |
dc.contributor.author | Ichihashi, Yasunori | - |
dc.contributor.author | Ranjan, Aashish | - |
dc.date.accessioned | 2022-02-15T10:02:26Z | - |
dc.date.available | 2022-02-15T10:02:26Z | - |
dc.date.issued | 2022 | - |
dc.identifier.citation | New Phytologist, 234(3): 867-883 | en_US |
dc.identifier.issn | 1469-8137 | - |
dc.identifier.other | https://doi.org/10.1111/nph.18029 | - |
dc.identifier.uri | https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.18029 | - |
dc.identifier.uri | http://223.31.159.10:8080/jspui/handle/123456789/1297 | - |
dc.description | Accepted date: 5 February 2022 | en_US |
dc.description.abstract | Cellular and genetic understanding of rice leaf size regulation is limited, despite rice being the staple food of more than half of the global population. We investigated the mechanism controlling the rice leaf length using cultivated and wild rice accessions that remarkably differed for leaf size. Comparative transcriptomics, Gibberellic Acid (GA) quantification, and leaf kinematics of the contrasting accessions suggested the involvement of GA, cell cycle, and Growth-Regulating Factors (GRFs) in the rice leaf size regulation. Zone-specific expression analysis and VIGS established the functions of specific GRFs in the process. The leaf length of the selected accessions was strongly correlated with GA levels. Higher GA content in wild rice accessions with longer leaves and GA-induced increase in the leaf length via an increase in cell division confirmed a GA-mediated regulation of division zone in rice. Downstream to GA, OsGRF7 and OsGRF8 function for controlling cell division to determine the rice leaf length. Spatial control of cell division to determine the division zone size mediated by GA and downstream OsGRF7 and OsGRF8 explains the leaf length differences between the cultivated and wild rice. This mechanism to control rice leaf length might have contributed to optimizing leaf size during domestication. | en_US |
dc.description.sponsorship | This work was supported by the core funding from the National Institute of Plant Genome Research as well as Ramalingaswamy Re-entry Fellowship (BT/RLF/Re-entry/05/2013) and Rice Network Project (BT/Ag/Network/Rice/2019-20) from the Department of Biotechnology, Ministry of Science and Technology, India. V.J. and K.S. acknowledge their UGC-SRF and SERB-NPDF fellowships, respectively. We thank Dr. Jyothilakshmi Vadassery for the suggestions and the NIPGR Metabolomics Facility for Gibberellic Acid (GA) quantification. We also thank NIPGR Central Instrumentation Facility for their support. Seeds of wild rice species and Oryza glaberrimawere kindly provided by Dr. Kuldeep Singh and Dr. Kumari Neelam, Punjab Agricultural University, Ludhiana, India. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | John Wiley & Sons | en_US |
dc.subject | Cell division | en_US |
dc.subject | Cultivated and wild rice | en_US |
dc.subject | Gibberellic acid (GA) | en_US |
dc.subject | Growth-Regulating Factors (GRFs) | en_US |
dc.subject | Leaf Kinematics | en_US |
dc.subject | Leaf growth zones | en_US |
dc.subject | Leaf length | en_US |
dc.title | Spatial control of cell division by GA-OsGRF7/8 module in a leaf explains the leaf length variation between cultivated and wild rice | en_US |
dc.type | Article | en_US |
Appears in Collections: | Institutional Publications |
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Ranjan A_2022_1.pdf Restricted Access | 20.68 MB | Adobe PDF | View/Open Request a copy |
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