Pathogenesis-Related Genes of PR1, PR2, PR4, and PR5 Families Are Involved in the Response to <i>Fusarium</i> Infection in Garlic (<i>Allium sativum</i> L.)

Pathogenesis-Related Genes of PR1, PR2, PR4, and PR5 Families Are Involved in the Response to <i>Fusarium</i> Infection in Garlic (<i>Allium sativum</i> L.)

Plants of the genus <i>Allium</i> developed a diversity of defense mechanisms against pathogenic fungi of the genus <i>Fusarium</i>, including transcriptional activation of pathogenesis-related (PR) genes. However, the information on the regulation of PR factors in garlic (&l...

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Bibliographic Details
Main Authors: Olga K. Anisimova, Anna V. Shchennikova, Elena Z. Kochieva, Mikhail A. Filyushin
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:International Journal of Molecular Sciences
Subjects:
garlic <i>Allium sativum</i> L.
pathogenesis-related proteins
biotic stress
<i>Fusarium</i> spp.
gene structure
gene expression
Online Access:https://www.mdpi.com/1422-0067/22/13/6688
Description
Summary:Plants of the genus <i>Allium</i> developed a diversity of defense mechanisms against pathogenic fungi of the genus <i>Fusarium</i>, including transcriptional activation of pathogenesis-related (PR) genes. However, the information on the regulation of PR factors in garlic (<i>Allium sativum</i> L.) is limited. In the present study, we identified <i>AsPR</i> genes putatively encoding PR1, PR2, PR4, and PR5 proteins in <i>A. sativum</i> cv. Ershuizao, which may be involved in the defense against <i>Fusarium</i> infection. The promoters of the <i>AsPR1–5</i> genes contained jasmonic acid-, salicylic acid-, gibberellin-, abscisic acid-, auxin-, ethylene-, and stress-responsive elements associated with the response to plant parasites. The expression of <i>AsPR1c</i>, <i>d</i>, <i>g</i>, <i>k, AsPR2b</i>, <i>AsPR5a, c</i> (in roots), and <i>AsPR4a(c)</i>, <i>b,</i> and <i>AsPR2c</i> (in stems and cloves) significantly differed between garlic cultivars resistant and susceptible to <i>Fusarium</i> rot, suggesting that it could define the PR protein-mediated protection against <i>Fusarium</i> infection in garlic. Our results provide insights into the role of PR factors in <i>A. sativum</i> and may be useful for breeding programs to increase the resistance of <i>Allium</i> crops to <i>Fusarium</i> infections.
ISSN:1661-6596
1422-0067

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