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ScGAI is a key regulator of culm development in sugarcane
Sugarcane contributes more than 70% of sugar production and is the second largest feedstock for ethanol production globally. Since sugar accumulates in sugarcane culms, culm biomass and sucrose content are the most commercially important traits. Despite extensive breeding, progress in both cane yiel...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6054169/ https://www.ncbi.nlm.nih.gov/pubmed/29767776 http://dx.doi.org/10.1093/jxb/ery180 |
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author | Garcia Tavares, Rafael Lakshmanan, Prakash Peiter, Edgar O’Connell, Anthony Caldana, Camila Vicentini, Renato Soares, José Sérgio Menossi, Marcelo |
author_facet | Garcia Tavares, Rafael Lakshmanan, Prakash Peiter, Edgar O’Connell, Anthony Caldana, Camila Vicentini, Renato Soares, José Sérgio Menossi, Marcelo |
author_sort | Garcia Tavares, Rafael |
collection | PubMed |
description | Sugarcane contributes more than 70% of sugar production and is the second largest feedstock for ethanol production globally. Since sugar accumulates in sugarcane culms, culm biomass and sucrose content are the most commercially important traits. Despite extensive breeding, progress in both cane yield and sugar content remains very slow in most countries. We hypothesize that manipulating the genetic elements controlling culm growth will alter source–sink regulation and help break down the yield barriers. In this study, we investigate the role of sugarcane ScGAI, an ortholog of SLR1/D8/RHT1/GAI, on culm development and source–sink regulation through a combination of molecular techniques and transgenic strategies. We show that ScGAI is a key molecular regulator of culm growth and development. Changing ScGAI activity created substantial culm growth and carbon allocation changes for structural molecules and storage. ScGAI regulates spatio-temporal growth of sugarcane culm and leaf by interacting with ScPIF3/PIF4 and ethylene signaling elements ScEIN3/ScEIL1, and its action appears to be regulated by SUMOylation in leaf but not in the culm. Collectively, the remarkable culm growth variation observed suggests that ScGAI could be used as an effective molecular breeding target for breaking the slow yield gain in sugarcane. |
format | Online Article Text |
id | pubmed-6054169 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-60541692018-07-25 ScGAI is a key regulator of culm development in sugarcane Garcia Tavares, Rafael Lakshmanan, Prakash Peiter, Edgar O’Connell, Anthony Caldana, Camila Vicentini, Renato Soares, José Sérgio Menossi, Marcelo J Exp Bot Research Papers Sugarcane contributes more than 70% of sugar production and is the second largest feedstock for ethanol production globally. Since sugar accumulates in sugarcane culms, culm biomass and sucrose content are the most commercially important traits. Despite extensive breeding, progress in both cane yield and sugar content remains very slow in most countries. We hypothesize that manipulating the genetic elements controlling culm growth will alter source–sink regulation and help break down the yield barriers. In this study, we investigate the role of sugarcane ScGAI, an ortholog of SLR1/D8/RHT1/GAI, on culm development and source–sink regulation through a combination of molecular techniques and transgenic strategies. We show that ScGAI is a key molecular regulator of culm growth and development. Changing ScGAI activity created substantial culm growth and carbon allocation changes for structural molecules and storage. ScGAI regulates spatio-temporal growth of sugarcane culm and leaf by interacting with ScPIF3/PIF4 and ethylene signaling elements ScEIN3/ScEIL1, and its action appears to be regulated by SUMOylation in leaf but not in the culm. Collectively, the remarkable culm growth variation observed suggests that ScGAI could be used as an effective molecular breeding target for breaking the slow yield gain in sugarcane. Oxford University Press 2018-07-20 2018-05-21 /pmc/articles/PMC6054169/ /pubmed/29767776 http://dx.doi.org/10.1093/jxb/ery180 Text en © The Author(s) 2018. Published by Oxford University Press on behalf of the Society for Experimental Biology. http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Papers Garcia Tavares, Rafael Lakshmanan, Prakash Peiter, Edgar O’Connell, Anthony Caldana, Camila Vicentini, Renato Soares, José Sérgio Menossi, Marcelo ScGAI is a key regulator of culm development in sugarcane |
title | ScGAI is a key regulator of culm development in sugarcane |
title_full | ScGAI is a key regulator of culm development in sugarcane |
title_fullStr | ScGAI is a key regulator of culm development in sugarcane |
title_full_unstemmed | ScGAI is a key regulator of culm development in sugarcane |
title_short | ScGAI is a key regulator of culm development in sugarcane |
title_sort | scgai is a key regulator of culm development in sugarcane |
topic | Research Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6054169/ https://www.ncbi.nlm.nih.gov/pubmed/29767776 http://dx.doi.org/10.1093/jxb/ery180 |
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