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Susceptible and resistant olive cultivars show differential physiological response to Xylella fastidiosa infections
Olive quick decline syndrome (OQDS) is a severe disease, first described in Italy in late 2013, caused by strains of Xylella fastidiosa subsp. pauca (Xfp) in susceptible olive cultivars. Conversely, resistant olive cultivars do not develop OQDS but present scattered branch dieback, which generally d...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9530328/ https://www.ncbi.nlm.nih.gov/pubmed/36204082 http://dx.doi.org/10.3389/fpls.2022.968934 |
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author | Surano, Antony Abou Kubaa, Raied Nigro, Franco Altamura, Giuseppe Losciale, Pasquale Saponari, Maria Saldarelli, Pasquale |
author_facet | Surano, Antony Abou Kubaa, Raied Nigro, Franco Altamura, Giuseppe Losciale, Pasquale Saponari, Maria Saldarelli, Pasquale |
author_sort | Surano, Antony |
collection | PubMed |
description | Olive quick decline syndrome (OQDS) is a severe disease, first described in Italy in late 2013, caused by strains of Xylella fastidiosa subsp. pauca (Xfp) in susceptible olive cultivars. Conversely, resistant olive cultivars do not develop OQDS but present scattered branch dieback, which generally does not evolve to severe canopy decline. In the present study, we assessed the physiological responses of Xfp-infected olive trees of susceptible and resistant cultivars. Periodic measurements of stomatal conductance (g(s)) and stem water potential (Ψstem) were performed using a set of healthy and Xfp-infected plants of the susceptible “Cellina di Nardò” and resistant “Leccino” and “FS17” cultivars. Strong differences in Δg(s) and ΔΨstem among Xfp-infected trees of these cultivars were found, with higher values in Cellina di Nardò than in Leccino and FS17, while no differences were found among healthy plants of the different cultivars. Both resistant olive cultivars showed lower water stress upon Xfp infections, compared to the susceptible one, suggesting that measurements of g(s) and Ψstem may represent discriminating parameters to be exploited in screening programs of olive genotypes for resistance to X. fastidiosa. |
format | Online Article Text |
id | pubmed-9530328 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-95303282022-10-05 Susceptible and resistant olive cultivars show differential physiological response to Xylella fastidiosa infections Surano, Antony Abou Kubaa, Raied Nigro, Franco Altamura, Giuseppe Losciale, Pasquale Saponari, Maria Saldarelli, Pasquale Front Plant Sci Plant Science Olive quick decline syndrome (OQDS) is a severe disease, first described in Italy in late 2013, caused by strains of Xylella fastidiosa subsp. pauca (Xfp) in susceptible olive cultivars. Conversely, resistant olive cultivars do not develop OQDS but present scattered branch dieback, which generally does not evolve to severe canopy decline. In the present study, we assessed the physiological responses of Xfp-infected olive trees of susceptible and resistant cultivars. Periodic measurements of stomatal conductance (g(s)) and stem water potential (Ψstem) were performed using a set of healthy and Xfp-infected plants of the susceptible “Cellina di Nardò” and resistant “Leccino” and “FS17” cultivars. Strong differences in Δg(s) and ΔΨstem among Xfp-infected trees of these cultivars were found, with higher values in Cellina di Nardò than in Leccino and FS17, while no differences were found among healthy plants of the different cultivars. Both resistant olive cultivars showed lower water stress upon Xfp infections, compared to the susceptible one, suggesting that measurements of g(s) and Ψstem may represent discriminating parameters to be exploited in screening programs of olive genotypes for resistance to X. fastidiosa. Frontiers Media S.A. 2022-09-20 /pmc/articles/PMC9530328/ /pubmed/36204082 http://dx.doi.org/10.3389/fpls.2022.968934 Text en Copyright © 2022 Surano, Abou Kubaa, Nigro, Altamura, Losciale, Saponari and Saldarelli. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Plant Science Surano, Antony Abou Kubaa, Raied Nigro, Franco Altamura, Giuseppe Losciale, Pasquale Saponari, Maria Saldarelli, Pasquale Susceptible and resistant olive cultivars show differential physiological response to Xylella fastidiosa infections |
title | Susceptible and resistant olive cultivars show differential physiological response to Xylella fastidiosa infections |
title_full | Susceptible and resistant olive cultivars show differential physiological response to Xylella fastidiosa infections |
title_fullStr | Susceptible and resistant olive cultivars show differential physiological response to Xylella fastidiosa infections |
title_full_unstemmed | Susceptible and resistant olive cultivars show differential physiological response to Xylella fastidiosa infections |
title_short | Susceptible and resistant olive cultivars show differential physiological response to Xylella fastidiosa infections |
title_sort | susceptible and resistant olive cultivars show differential physiological response to xylella fastidiosa infections |
topic | Plant Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9530328/ https://www.ncbi.nlm.nih.gov/pubmed/36204082 http://dx.doi.org/10.3389/fpls.2022.968934 |
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