Field-based assessment of the mechanism of maize yield enhancement by Azospirillum lipoferum CRT1

Abstract Plant Growth-Promoting Bacteria (PGPB) of the genus Azospirillum are known to enhance root growth and yield in many plant species including cereals. To probe the underlying mechanisms, correlations between modifications of yield and 6-leaf plantlet characteristics were estimated on maize in...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Camille Rozier, Jihane Hamzaoui, Damien Lemoine, Sonia Czarnes, Laurent Legendre
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fc1910c11f9f430aaf8c158532c69e07
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:fc1910c11f9f430aaf8c158532c69e07
record_format	dspace
spelling	oai:doaj.org-article:fc1910c11f9f430aaf8c158532c69e072021-12-02T12:32:59ZField-based assessment of the mechanism of maize yield enhancement by Azospirillum lipoferum CRT110.1038/s41598-017-07929-82045-2322https://doaj.org/article/fc1910c11f9f430aaf8c158532c69e072017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07929-8https://doaj.org/toc/2045-2322Abstract Plant Growth-Promoting Bacteria (PGPB) of the genus Azospirillum are known to enhance root growth and yield in many plant species including cereals. To probe the underlying mechanisms, correlations between modifications of yield and 6-leaf plantlet characteristics were estimated on maize in four fields with contrasting soil properties over two consecutive years using the commercial isolate A. lipoferum CRT1. In both years, plantlet metabolome, photosynthetic potential and organ morphology were found to display field- and inoculation-specific signatures. Metabolomic analyses revealed that A. lipoferum CRT1 mostly affected sugar metabolism with no suggested impact on N and P assimilation. Mineral nitrogen feeding increased yield but did not affect yield enhancement by the bacterial partner. However, greater improvements of leaf photosynthetic potential correlated with yield diminutions and larger plantlets in all of their proportions correlated with yield enhancements. Bacterial inoculation restored proper seed-to-adult plant ratio when it accidentally dropped below 80%. Only in these cases did it raise yield. All in all, securing mature plant density is hypothesized as being the primary driver of A. lipoferum CRT1-mediated yield enhancement in maize fields.Camille RozierJihane HamzaouiDamien LemoineSonia CzarnesLaurent LegendreNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Camille Rozier Jihane Hamzaoui Damien Lemoine Sonia Czarnes Laurent Legendre Field-based assessment of the mechanism of maize yield enhancement by Azospirillum lipoferum CRT1
description	Abstract Plant Growth-Promoting Bacteria (PGPB) of the genus Azospirillum are known to enhance root growth and yield in many plant species including cereals. To probe the underlying mechanisms, correlations between modifications of yield and 6-leaf plantlet characteristics were estimated on maize in four fields with contrasting soil properties over two consecutive years using the commercial isolate A. lipoferum CRT1. In both years, plantlet metabolome, photosynthetic potential and organ morphology were found to display field- and inoculation-specific signatures. Metabolomic analyses revealed that A. lipoferum CRT1 mostly affected sugar metabolism with no suggested impact on N and P assimilation. Mineral nitrogen feeding increased yield but did not affect yield enhancement by the bacterial partner. However, greater improvements of leaf photosynthetic potential correlated with yield diminutions and larger plantlets in all of their proportions correlated with yield enhancements. Bacterial inoculation restored proper seed-to-adult plant ratio when it accidentally dropped below 80%. Only in these cases did it raise yield. All in all, securing mature plant density is hypothesized as being the primary driver of A. lipoferum CRT1-mediated yield enhancement in maize fields.
format	article
author	Camille Rozier Jihane Hamzaoui Damien Lemoine Sonia Czarnes Laurent Legendre
author_facet	Camille Rozier Jihane Hamzaoui Damien Lemoine Sonia Czarnes Laurent Legendre
author_sort	Camille Rozier
title	Field-based assessment of the mechanism of maize yield enhancement by Azospirillum lipoferum CRT1
title_short	Field-based assessment of the mechanism of maize yield enhancement by Azospirillum lipoferum CRT1
title_full	Field-based assessment of the mechanism of maize yield enhancement by Azospirillum lipoferum CRT1
title_fullStr	Field-based assessment of the mechanism of maize yield enhancement by Azospirillum lipoferum CRT1
title_full_unstemmed	Field-based assessment of the mechanism of maize yield enhancement by Azospirillum lipoferum CRT1
title_sort	field-based assessment of the mechanism of maize yield enhancement by azospirillum lipoferum crt1
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/fc1910c11f9f430aaf8c158532c69e07
work_keys_str_mv	AT camillerozier fieldbasedassessmentofthemechanismofmaizeyieldenhancementbyazospirillumlipoferumcrt1 AT jihanehamzaoui fieldbasedassessmentofthemechanismofmaizeyieldenhancementbyazospirillumlipoferumcrt1 AT damienlemoine fieldbasedassessmentofthemechanismofmaizeyieldenhancementbyazospirillumlipoferumcrt1 AT soniaczarnes fieldbasedassessmentofthemechanismofmaizeyieldenhancementbyazospirillumlipoferumcrt1 AT laurentlegendre fieldbasedassessmentofthemechanismofmaizeyieldenhancementbyazospirillumlipoferumcrt1
_version_	1718393956814815232

Field-based assessment of the mechanism of maize yield enhancement by Azospirillum lipoferum CRT1

Ejemplares similares