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Differential Regulation of Drought Responses in Two Phaseolus vulgaris Genotypes
Drought is probably the most harmful stress affecting common bean crops. Domestication, worldwide spread and local farming practices has entailed the development of a wide variety of common bean genotypes with different degrees of resistance to water stress. In this work, physiological and molecular...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7768404/ https://www.ncbi.nlm.nih.gov/pubmed/33371446 http://dx.doi.org/10.3390/plants9121815 |
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author | López, Cristina María Pineda, Manuel Alamillo, Josefa M. |
author_facet | López, Cristina María Pineda, Manuel Alamillo, Josefa M. |
author_sort | López, Cristina María |
collection | PubMed |
description | Drought is probably the most harmful stress affecting common bean crops. Domestication, worldwide spread and local farming practices has entailed the development of a wide variety of common bean genotypes with different degrees of resistance to water stress. In this work, physiological and molecular responses to water stress have been compared in two common bean accessions, PHA-0683 and PMB-0220, previously identified as highly and moderately resistant to water stress, respectively. Our hypothesis was that only quantitative differences in the expression patterns of key genes should be found if molecular mechanisms regulating drought resistance are similar in the two accessions. However, results presented here indicate that the resistance to drought in PMB-0220 and PHA-0683 common bean accessions is regulated by different molecular mechanisms. Differential regulation of ABA synthesis and ABA signaling related genes among the two genotypes, and the control of the drought-induced senescence have a relevant contribution to the higher resistance level of PHA-0683 accession. Our results also suggest that expression patterns of key senescence-related transcription factors could be considered in the screening for drought resistance in common bean germplasm collections. |
format | Online Article Text |
id | pubmed-7768404 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-77684042020-12-29 Differential Regulation of Drought Responses in Two Phaseolus vulgaris Genotypes López, Cristina María Pineda, Manuel Alamillo, Josefa M. Plants (Basel) Article Drought is probably the most harmful stress affecting common bean crops. Domestication, worldwide spread and local farming practices has entailed the development of a wide variety of common bean genotypes with different degrees of resistance to water stress. In this work, physiological and molecular responses to water stress have been compared in two common bean accessions, PHA-0683 and PMB-0220, previously identified as highly and moderately resistant to water stress, respectively. Our hypothesis was that only quantitative differences in the expression patterns of key genes should be found if molecular mechanisms regulating drought resistance are similar in the two accessions. However, results presented here indicate that the resistance to drought in PMB-0220 and PHA-0683 common bean accessions is regulated by different molecular mechanisms. Differential regulation of ABA synthesis and ABA signaling related genes among the two genotypes, and the control of the drought-induced senescence have a relevant contribution to the higher resistance level of PHA-0683 accession. Our results also suggest that expression patterns of key senescence-related transcription factors could be considered in the screening for drought resistance in common bean germplasm collections. MDPI 2020-12-21 /pmc/articles/PMC7768404/ /pubmed/33371446 http://dx.doi.org/10.3390/plants9121815 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article López, Cristina María Pineda, Manuel Alamillo, Josefa M. Differential Regulation of Drought Responses in Two Phaseolus vulgaris Genotypes |
title | Differential Regulation of Drought Responses in Two Phaseolus vulgaris Genotypes |
title_full | Differential Regulation of Drought Responses in Two Phaseolus vulgaris Genotypes |
title_fullStr | Differential Regulation of Drought Responses in Two Phaseolus vulgaris Genotypes |
title_full_unstemmed | Differential Regulation of Drought Responses in Two Phaseolus vulgaris Genotypes |
title_short | Differential Regulation of Drought Responses in Two Phaseolus vulgaris Genotypes |
title_sort | differential regulation of drought responses in two phaseolus vulgaris genotypes |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7768404/ https://www.ncbi.nlm.nih.gov/pubmed/33371446 http://dx.doi.org/10.3390/plants9121815 |
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