Do volatile compounds produced by Fusarium oxysporum and Verticillium dahliae affect stress tolerance in plants?
Volatile compounds (VCs) produced by diverse microbes seem to affect plant growth, development and/or stress tolerance. We investigated how VCs released by soilborne fungi Fusarium oxysporum and Verticillium dahliae affect Arabidopsis thaliana responses to abiotic and biotic stresses. Under salt str...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2018-07-01
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| Series: | Mycology |
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| Online Access: | http://dx.doi.org/10.1080/21501203.2018.1448009 |
| _version_ | 1828397725292429312 |
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| author | Ningxiao Li Seogchan Kang |
| author_facet | Ningxiao Li Seogchan Kang |
| author_sort | Ningxiao Li |
| collection | DOAJ |
| description | Volatile compounds (VCs) produced by diverse microbes seem to affect plant growth, development and/or stress tolerance. We investigated how VCs released by soilborne fungi Fusarium oxysporum and Verticillium dahliae affect Arabidopsis thaliana responses to abiotic and biotic stresses. Under salt stress, VCs from both fungi helped its growth and increased chlorophyll content. However, in contrast to wild-type A. thaliana (Col-0), V. dahliae VCs failed to increase leaf surface area in auxin signalling mutants aux1-7, tir1-1 and axr1-3. Compared to wild-type Col-0, the degree of lateral root density enhanced by V. dahliae VCs in these mutants was also reduced. Consistent with the involvement of auxin signalling in fungal VC-mediated salt torelance, A. thaliana line carrying DR5::GUS displayed increased auxin accumulation in root apex upon exposure to V. dahliae VCs, and 1-naphthylphthalamic acid, an auxin transport inhibitor, adversely affected V. dahliae VC-mediated salt tolerance. F. oxysporum VCs induced the expression of PR1 but not PDF1.2 in A. thaliana lines containing PR1::GUS and PFD1.2::GUS. When challenged with Pseudomonas syringae after the exposure to F. oxysporum VCs, A. thaliana showed reduced disease symptoms. However, the number of bacterial cells in F. oxysporum VC-treated plants was not significantly different from that in control plants. |
| first_indexed | 2024-12-10T08:52:25Z |
| format | Article |
| id | doaj.art-01a33c69aa0b461ea3f93280d150863e |
| institution | Directory Open Access Journal |
| issn | 2150-1203 2150-1211 |
| language | English |
| last_indexed | 2024-12-10T08:52:25Z |
| publishDate | 2018-07-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Mycology |
| spelling | doaj.art-01a33c69aa0b461ea3f93280d150863e2022-12-22T01:55:33ZengTaylor & Francis GroupMycology2150-12032150-12112018-07-019316617510.1080/21501203.2018.14480091448009Do volatile compounds produced by Fusarium oxysporum and Verticillium dahliae affect stress tolerance in plants?Ningxiao Li0Seogchan Kang1Intercollege Graduate Degree Program in Plant BiologyIntercollege Graduate Degree Program in Plant BiologyVolatile compounds (VCs) produced by diverse microbes seem to affect plant growth, development and/or stress tolerance. We investigated how VCs released by soilborne fungi Fusarium oxysporum and Verticillium dahliae affect Arabidopsis thaliana responses to abiotic and biotic stresses. Under salt stress, VCs from both fungi helped its growth and increased chlorophyll content. However, in contrast to wild-type A. thaliana (Col-0), V. dahliae VCs failed to increase leaf surface area in auxin signalling mutants aux1-7, tir1-1 and axr1-3. Compared to wild-type Col-0, the degree of lateral root density enhanced by V. dahliae VCs in these mutants was also reduced. Consistent with the involvement of auxin signalling in fungal VC-mediated salt torelance, A. thaliana line carrying DR5::GUS displayed increased auxin accumulation in root apex upon exposure to V. dahliae VCs, and 1-naphthylphthalamic acid, an auxin transport inhibitor, adversely affected V. dahliae VC-mediated salt tolerance. F. oxysporum VCs induced the expression of PR1 but not PDF1.2 in A. thaliana lines containing PR1::GUS and PFD1.2::GUS. When challenged with Pseudomonas syringae after the exposure to F. oxysporum VCs, A. thaliana showed reduced disease symptoms. However, the number of bacterial cells in F. oxysporum VC-treated plants was not significantly different from that in control plants.http://dx.doi.org/10.1080/21501203.2018.1448009Salt toleranceplant defenceauxindefence signallingfungal volatile compounds |
| spellingShingle | Ningxiao Li Seogchan Kang Do volatile compounds produced by Fusarium oxysporum and Verticillium dahliae affect stress tolerance in plants? Mycology Salt tolerance plant defence auxin defence signalling fungal volatile compounds |
| title | Do volatile compounds produced by Fusarium oxysporum and Verticillium dahliae affect stress tolerance in plants? |
| title_full | Do volatile compounds produced by Fusarium oxysporum and Verticillium dahliae affect stress tolerance in plants? |
| title_fullStr | Do volatile compounds produced by Fusarium oxysporum and Verticillium dahliae affect stress tolerance in plants? |
| title_full_unstemmed | Do volatile compounds produced by Fusarium oxysporum and Verticillium dahliae affect stress tolerance in plants? |
| title_short | Do volatile compounds produced by Fusarium oxysporum and Verticillium dahliae affect stress tolerance in plants? |
| title_sort | do volatile compounds produced by fusarium oxysporum and verticillium dahliae affect stress tolerance in plants |
| topic | Salt tolerance plant defence auxin defence signalling fungal volatile compounds |
| url | http://dx.doi.org/10.1080/21501203.2018.1448009 |
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