Improved water use efficiency and shorter life cycle of Nicotiana tabacum due to modification of guard and vascular companion cells

Severe droughts are predicted for the twenty-frst century, which contrast with the increased demand for plant materials. Thus, to sustain future generations, a great challenge is to improve crop yield and water use efciency (WUE), which is the carbon gained per water lost. Here, expression of ma...

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Autores principales:	Müller, Gabriela L., Lara, María V., Oitaven, Pablo, Andreo, Carlos S., Maurino, Verónica G., Drincovich, María Fabiana
Formato:	article artículo publishedVersion
Lenguaje:	Inglés
Publicado:	Nature 2021
Materias:	Tobacco Plant Materials Water Use Efficiency NADP-Malic Enzyme
Acceso en línea:	http://hdl.handle.net/2133/20025 http://hdl.handle.net/2133/20025
Aporte de:	Repositorio Hipermedial de la Universidad Nacional de Rosario (UNR) de Universidad Nacional de Rosario

id	I15-R121-2133-20025
record_format	dspace
institution	Universidad Nacional de Rosario
institution_str	I-15
repository_str	R-121
collection	Repositorio Hipermedial de la Universidad Nacional de Rosario (UNR)
language	Inglés
orig_language_str_mv	eng
topic	Tobacco Plant Materials Water Use Efficiency NADP-Malic Enzyme
spellingShingle	Tobacco Plant Materials Water Use Efficiency NADP-Malic Enzyme Müller, Gabriela L. Lara, María V. Oitaven, Pablo Andreo, Carlos S. Maurino, Verónica G. Drincovich, María Fabiana Improved water use efficiency and shorter life cycle of Nicotiana tabacum due to modification of guard and vascular companion cells
topic_facet	Tobacco Plant Materials Water Use Efficiency NADP-Malic Enzyme
description	Severe droughts are predicted for the twenty-frst century, which contrast with the increased demand for plant materials. Thus, to sustain future generations, a great challenge is to improve crop yield and water use efciency (WUE), which is the carbon gained per water lost. Here, expression of maize NADP-malic enzyme (NADP-ME) in the guard and vascular companion cells of Nicotiana tabacum results in enhanced WUE, earlier fowering and shorter life cycle. Transgenic lines exhibit reduced stomatal aperture than wild-type (WT). Nevertheless, an increased net CO2 fxation rate is observed, which results in less water consumption and more biomass production per water used. Transgenic lines export sugars to the phloem at higher rate than WT, which leads to higher sugars levels in phloem exudates and veins. Leaf quantitative proteomic profling revealed drastic diferences in proteins related to cell cycle, fowering, hormone signaling and carbon metabolism between transgenic lines and WT. We propose that the increased sugar export from leaves in the transgenic lines alleviates sugar negative feedback on photosynthesis and thus, stomatal closure takes place without a penalty in CO2 assimilation rate. This results in improved WUE and accelerated overall life cycle, key traits for plant productivity in the near future world.
format	article artículo publishedVersion
author	Müller, Gabriela L. Lara, María V. Oitaven, Pablo Andreo, Carlos S. Maurino, Verónica G. Drincovich, María Fabiana
author_facet	Müller, Gabriela L. Lara, María V. Oitaven, Pablo Andreo, Carlos S. Maurino, Verónica G. Drincovich, María Fabiana
author_sort	Müller, Gabriela L.
title	Improved water use efficiency and shorter life cycle of Nicotiana tabacum due to modification of guard and vascular companion cells
title_short	Improved water use efficiency and shorter life cycle of Nicotiana tabacum due to modification of guard and vascular companion cells
title_full	Improved water use efficiency and shorter life cycle of Nicotiana tabacum due to modification of guard and vascular companion cells
title_fullStr	Improved water use efficiency and shorter life cycle of Nicotiana tabacum due to modification of guard and vascular companion cells
title_full_unstemmed	Improved water use efficiency and shorter life cycle of Nicotiana tabacum due to modification of guard and vascular companion cells
title_sort	improved water use efficiency and shorter life cycle of nicotiana tabacum due to modification of guard and vascular companion cells
publisher	Nature
publishDate	2021
url	http://hdl.handle.net/2133/20025 http://hdl.handle.net/2133/20025
work_keys_str_mv	AT mullergabrielal improvedwateruseefficiencyandshorterlifecycleofnicotianatabacumduetomodificationofguardandvascularcompanioncells AT laramariav improvedwateruseefficiencyandshorterlifecycleofnicotianatabacumduetomodificationofguardandvascularcompanioncells AT oitavenpablo improvedwateruseefficiencyandshorterlifecycleofnicotianatabacumduetomodificationofguardandvascularcompanioncells AT andreocarloss improvedwateruseefficiencyandshorterlifecycleofnicotianatabacumduetomodificationofguardandvascularcompanioncells AT maurinoveronicag improvedwateruseefficiencyandshorterlifecycleofnicotianatabacumduetomodificationofguardandvascularcompanioncells AT drincovichmariafabiana improvedwateruseefficiencyandshorterlifecycleofnicotianatabacumduetomodificationofguardandvascularcompanioncells
bdutipo_str	Repositorios
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Improved water use efficiency and shorter life cycle of Nicotiana tabacum due to modification of guard and vascular companion cells

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