Comparative transcriptome profiling reveals that brassinosteroid-mediated lignification plays an important role in garlic adaption to salt stress
Copyright © 2020 Elsevier Masson SAS. All rights reserved.
| Publié dans: | Plant physiology and biochemistry : PPB. - 1991. - 158(2021) vom: 01. Jan., Seite 34-42 |
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| Auteur principal: | |
| Autres auteurs: | , , , , , , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2021
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| Accès à la collection: | Plant physiology and biochemistry : PPB |
| Sujets: | Journal Article Brassinosteroid Garlic (Allium sativum L.) Phenylpropanoid Salt stress de novo transcriptome Brassinosteroids Lignin 9005-53-2 |
| Résumé: | Copyright © 2020 Elsevier Masson SAS. All rights reserved. Garlic (Allium sativum L.) is an economically important vegetable crop which is used worldwide for culinary and medicinal purposes. Soil salinity constrains the yield components of garlic. Understanding the responsive mechanism of garlic to salinity is crucial to improve its tolerance. To address this problem, two garlic cultivars differing in salt tolerance were used to investigate the long-term adaptive responses to salt stress at phenotype and transcriptome levels. Phenotypic analysis showed four-week salt stress significantly decreased the yield components of salt-sensitive cultivar. Transcriptomes of garlics were de novo assembled and mined for transcriptional activities regulated by salt stress. The results showed that photosynthesis, energy allocation, and secondary metabolism were commonly enriched in both sensitive and tolerant genotypes. Moreover, distinct responsive patterns were also observed between the two genotypes. Compared with the salt-tolerant genotype, most transcripts encoding enzymes in the phenylpropanoid biosynthesis pathway were coordinately down regulated in the salt-sensitive genotype, resulting in alternation of the content and composition of lignin. Meanwhile, transcripts encoding the enzymes in the brassinosteroid (BR) biosynthesis pathway were also systematically down regulated in the salt-sensitive genotypes. Taken together, these results suggested that BR-mediated lignin accumulation possibly plays an important role in garlic adaption to salt stress. These findings expand the understanding of responsive mechanism of garlic to salt stress |
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| Description: | Date Completed 05.02.2021 Date Revised 05.02.2021 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1873-2690 |
| DOI: | 10.1016/j.plaphy.2020.11.033 |