Diverging cell wall strategies for drought adaptation in two maize inbreds with contrasting lodging resistance
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Author
Calderone, Silvia
Mauri, Nuria
Manga-Robles, Alba
García-Mir, Lluís
Centeno, María-Luz
Sánchez-Retuerta, Camila
Ursache, Robertas
Acebes, José-Luis
Campos, Narciso
García-Angulo, Penélope
Encina, Antonio
Caparrós-Ruiz, David
Publication date
2024-02-05ISSN
1365-3040
Abstract
The plant cell wall is a plastic structure of variable composition that constitutes the first line of defence against environmental challenges. Lodging and drought are two stressful conditions that severely impact maize yield. In a previous work, we characterised the cell walls of two maize inbreds, EA2024 (susceptible) and B73 (resistant) to stalk lodging. Here, we show that drought induces distinct phenotypical, physiological, cell wall, and transcriptional changes in the two inbreds, with B73 exhibiting lower tolerance to this stress than EA2024. In control conditions, EA2024 stalks had higher levels of cellulose, uronic acids and p‐coumarate than B73.
However, upon drought EA2024 displayed increased levels of arabinose‐enriched polymers, such as pectin‐arabinans and arabinogalactan proteins, and a decreased lignin content. By contrast, B73 displayed a deeper rearrangement of cell walls upon drought, including modifications in lignin composition (increased S subunits and S/G ratio; decreased H subunits) and an increase of uronic acids. Drought induced more substantial changes in gene expression in B73 compared to EA2024, particularly in cell wall‐related genes, that were modulated in an inbred‐specific manner. Transcription factor enrichment assays unveiled inbred‐specific regulatory networks coordinating cell wall genes expression. Altogether, these findings reveal that B73 and EA2024 inbreds, with opposite stalk‐lodging phenotypes, undertake different cell wall modification strategies in response to drought. We propose that the specific cell wall composition conferring lodging resistance to B73, compromises its cell wall
plasticity, and renders this inbred more susceptible to drought.
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
633 - Field crops and their production
Pages
22
Publisher
Wiley
Is part of
Plant, Cell and Environment
Citation
Calderone, Silvia, Nuria Mauri, Alba Manga‐Robles, Silvia Fornalé, Lluís García‐Mir, Marı́a Luz Centeno, Camila Sánchez‐Retuerta, et al. 2024. “Diverging Cell Wall Strategies for Drought Adaptation in Two Maize Inbreds With Contrasting Lodging Resistance.” Plant, Cell & Environment 47 (5): 1747–1768. https://doi.org/10.1111/pce.14822.
Grant agreement number
MINECO/Programa Estatal de I+D+I orientada a los retos de la sociedad/AGL2014-58126-R/ES/DESARROLLO DE HERRAMIENTAS BIOTECNOLOGICAS ASOCIADAS CON LA PARED CELULAR Y LA ROTURA DE LA CAÑA DEL MAIZ PARA LA MEJORA DE LA PRODUCTIVIDAD Y LA CALIDAD
MINECO/Programa Estatal de I+D+I orientada a los retos de la sociedad/RTC-2016-5816-2/ES/Desarrollo e implantación en la empresa de técnicas biotecnológicas innovadoras para la mejora y mantenimiento de cultivos agrícolas estratégicos para Castilla y León/
MICINN/Programa Estatal para impulsar la investigación científico-técnica y su transferencia/PID2022-142786NB-I00/ES/ /
MEC/Programa nacional de medios de transporte/CSD2007-00036/ES/Centro de Genómica Básica y de orientación Agroalimentaria/
MINECO/Programa Estatal de fomento de la investigación científica y técnica de excelencia/SEV-2015-0533-19-1/ES/ /
MICIU/Programa Estatal de generación del conocimiento y fortalecimiento científico y tecnológico del sistema I+D+I/CEX2019-000902-S/ES/ /
Program
Genòmica i Biotecnologia
This item appears in the following Collection(s)
- ARTICLES CIENTÍFICS [2555]
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Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by-nc-nd/4.0/