Comparative structural analysis of the drought responsive dehydrin and aquaporin gene families in Brachypodium and close grasses

Comparative structural analysis of the drought responsive dehydrin and aquaporin gene families in Brachypodium and close grasses

Trabajo presentado en la 4th International Brachypodium Conference, celebrada en Huesca del 25 al 28 de junio de 2019.

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Main Authors: Gálvez, Sergio, Agostini, Federico, Decena, María Ángeles, Mérida-García, Rosa, Catalán, Pilar, Hernández Molina, Pilar
Format: póster de congreso biblioteca
Published: Universidad de Zaragoza 2019
Online Access:http://hdl.handle.net/10261/215284
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spelling dig-ias-es-10261-2152842020-06-26T09:23:54Z Comparative structural analysis of the drought responsive dehydrin and aquaporin gene families in Brachypodium and close grasses Gálvez, Sergio Agostini, Federico Decena, María Ángeles Mérida-García, Rosa Catalán, Pilar Hernández Molina, Pilar Trabajo presentado en la 4th International Brachypodium Conference, celebrada en Huesca del 25 al 28 de junio de 2019. Dehydrins (DHNs) belong to the group 2 LEA (Late Embryogenesis Abundant) genes and play an important role in the response of plants to abiotic stress, mainly heat, salinity and drought. Under these stresses, DHNs accumulate to a large extent in maturing seeds and in all vegetative tissues. As many studies reveal, there is a positive correlation between DHN gene expression (synthesis of DHN proteins) and plant stress tolerance. Aquaporins (AQPs) belong to the major intrinsic protein (MIP) superfamily of membrane proteins conserved in plants and animals as well as in bacteria. Support-ing evidence suggests that AQPs have an important role in stomatal closure and circadian regulation. There are more than 150 MIPs identified and, although some of them are constitutively expressed, others are regulated in response to drought and salinity.In this study, sequence and annotation data has been retrieved from Phytozome and Ensembl Plants in order to compare DHNs and AQPs in four Brachypodium species, 54 B. distachyon varieties and five cereals (Zea mays, Sorghum bicolor, Oryza sativa, Hordeum vulgare and Triticumaestivum) In the B. distachyon intra-species comparison, drought tolerant lines seem to contain slightly shorter aquaporin and de-hydrin genes, and some of them are dissimilar to those of the rest. The physical distribution of AQPs includes a cluster of genes that splits the lines into two main groups depending on its location, either in chromosome 3 or in chromosome 4 of this species. However, this does not seem to be related to drought stress susceptibility.A phylogenetic analysis of the dehydrin gene family shows a close relation between the B.stacei and B. hybridum – S subgenomes, followed by the B.distachyon and B hybridum –D subgenome, and B.sylvaticum. However B.sylvaticum, typical from humid environments, contains nine DHNs, four of which are not close to any of the nine DHNs present in the other Mediterranean Brachypodium species. A deeper analysis of orthologs shows that a DHN in B. distachyon chro-mosome 1 is not related to those of Sorghum or Oryza and that there are clusters of DHNs in chromosomes 5 and 6 of Triticumaestivum related to those of chromosomes 3 and 4 of B. distachyon Only one DHN in Brachypodium spp is found in all the analyzed grass species with the exception of Hordeum vulgare. 2020-06-25T10:50:03Z 2020-06-25T10:50:03Z 2019 2020-06-25T10:50:03Z póster de congreso http://purl.org/coar/resource_type/c_6670 isbn: 978-84-16723-14-0 4th International Brachypodium Conference: 85 (2019) http://hdl.handle.net/10261/215284 Sí open Universidad de Zaragoza
institution IAS ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-ias-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del IAS España
description Trabajo presentado en la 4th International Brachypodium Conference, celebrada en Huesca del 25 al 28 de junio de 2019.
format póster de congreso
author Gálvez, Sergio
Agostini, Federico
Decena, María Ángeles
Mérida-García, Rosa
Catalán, Pilar
Hernández Molina, Pilar
spellingShingle Gálvez, Sergio
Agostini, Federico
Decena, María Ángeles
Mérida-García, Rosa
Catalán, Pilar
Hernández Molina, Pilar
Comparative structural analysis of the drought responsive dehydrin and aquaporin gene families in Brachypodium and close grasses
author_facet Gálvez, Sergio
Agostini, Federico
Decena, María Ángeles
Mérida-García, Rosa
Catalán, Pilar
Hernández Molina, Pilar
author_sort Gálvez, Sergio
title Comparative structural analysis of the drought responsive dehydrin and aquaporin gene families in Brachypodium and close grasses
title_short Comparative structural analysis of the drought responsive dehydrin and aquaporin gene families in Brachypodium and close grasses
title_full Comparative structural analysis of the drought responsive dehydrin and aquaporin gene families in Brachypodium and close grasses
title_fullStr Comparative structural analysis of the drought responsive dehydrin and aquaporin gene families in Brachypodium and close grasses
title_full_unstemmed Comparative structural analysis of the drought responsive dehydrin and aquaporin gene families in Brachypodium and close grasses
title_sort comparative structural analysis of the drought responsive dehydrin and aquaporin gene families in brachypodium and close grasses
publisher Universidad de Zaragoza
publishDate 2019
url http://hdl.handle.net/10261/215284
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