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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Effects of silicon treatment and inoculation with <italic>Fusarium oxysporum</italic> f. sp. <italic>vasinfectum</italic> on cellular defences in root tissues of two cotton cultivars</title><author><name sortKey="Whan, Jennifer A" sort="Whan, Jennifer A" uniqKey="Whan J" first="Jennifer A." last="Whan">Jennifer A. Whan</name><affiliation><nlm:aff id="mcw095-aff1">School of Agriculture and Food Sciences, The University of Queensland, St Lucia, QLD 4072, Australia</nlm:aff></affiliation></author><author><name sortKey="Dann, Elizabeth K" sort="Dann, Elizabeth K" uniqKey="Dann E" first="Elizabeth K." last="Dann">Elizabeth K. Dann</name><affiliation><nlm:aff id="mcw095-aff2">Queensland Alliance for Agriculture and Food Innovation, University of Queensland, 2CWest Ecosciences Precinct, GPO Box 267, Brisbane, QLD 4001, Australia</nlm:aff></affiliation></author><author><name sortKey="Aitken, Elizabeth A B" sort="Aitken, Elizabeth A B" uniqKey="Aitken E" first="Elizabeth A. B." last="Aitken">Elizabeth A. B. Aitken</name><affiliation><nlm:aff id="mcw095-aff1">School of Agriculture and Food Sciences, The University of Queensland, St Lucia, QLD 4072, Australia</nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">27288509</idno><idno type="pmc">4970361</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4970361</idno><idno type="RBID">PMC:4970361</idno><idno type="doi">10.1093/aob/mcw095</idno><date when="2016">2016</date><idno type="wicri:Area/Pmc/Corpus">000044</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000044</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Effects of silicon treatment and inoculation with <italic>Fusarium oxysporum</italic> f. sp. <italic>vasinfectum</italic> on cellular defences in root tissues of two cotton cultivars</title><author><name sortKey="Whan, Jennifer A" sort="Whan, Jennifer A" uniqKey="Whan J" first="Jennifer A." last="Whan">Jennifer A. Whan</name><affiliation><nlm:aff id="mcw095-aff1">School of Agriculture and Food Sciences, The University of Queensland, St Lucia, QLD 4072, Australia</nlm:aff></affiliation></author><author><name sortKey="Dann, Elizabeth K" sort="Dann, Elizabeth K" uniqKey="Dann E" first="Elizabeth K." last="Dann">Elizabeth K. Dann</name><affiliation><nlm:aff id="mcw095-aff2">Queensland Alliance for Agriculture and Food Innovation, University of Queensland, 2CWest Ecosciences Precinct, GPO Box 267, Brisbane, QLD 4001, Australia</nlm:aff></affiliation></author><author><name sortKey="Aitken, Elizabeth A B" sort="Aitken, Elizabeth A B" uniqKey="Aitken E" first="Elizabeth A. B." last="Aitken">Elizabeth A. B. Aitken</name><affiliation><nlm:aff id="mcw095-aff1">School of Agriculture and Food Sciences, The University of Queensland, St Lucia, QLD 4072, Australia</nlm:aff></affiliation></author></analytic><series><title level="j">Annals of Botany</title><idno type="ISSN">0305-7364</idno><idno type="eISSN">1095-8290</idno><imprint><date when="2016">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p><bold>Background and Aims</bold> Silicon has been shown to enhance the resistance of plants to fungal and bacterial pathogens. Here, the effect of potassium silicate was assessed on two cotton (<italic>Gossypium hirsutum</italic>) cultivars subsequently inoculated with <italic>Fusarium oxysporum</italic> f. sp. <italic>vasinfectum</italic> (<italic>Fov</italic>). Sicot 189 is moderately resistant whilst Sicot F-1 is the second most resistant commercial cultivar presently available in Australia.</p><p><bold>Methods</bold> Transmission and light microscopy were used to compare cellular modifications in root cells after these different treatments. The accumulation of phenolic compounds and lignin was measured.</p><p><bold>Key Results</bold> Cellular alterations including the deposition of electron-dense material, degradation of fungal hyphae and occlusion of endodermal cells were more rapidly induced and more intense in endodermal and vascular regions of Sicot F-1 plants supplied with potassium silicate followed by inoculation with <italic>Fov</italic> than in similarly treated Sicot 189 plants or in silicate-treated plants of either cultivar not inoculated with <italic>Fov.</italic> Significantly more phenolic compounds were present at 7 d post-infection (dpi) in root extracts of Sicot F-1 plants treated with potassium silicate followed by inoculation with <italic>Fov</italic> compared with plants from all other treatments. The lignin concentration at 3 dpi in root material from Sicot F-1 treated with potassium silicate and inoculated with <italic>Fov</italic> was significantly higher than that from water-treated and inoculated plants.</p><p><bold>Conclusions</bold> This study demonstrates that silicon treatment can affect cellular defence responses in cotton roots subsequently inoculated with <italic>Fov</italic>, particularly in Sicot F-1, a cultivar with greater inherent resistance to this pathogen. This suggests that silicon may interact with or initiate defence pathways faster in this cultivar than in the less resistant cultivar.</p></div></front></TEI><pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Ann Bot</journal-id><journal-id journal-id-type="iso-abbrev">Ann. Bot</journal-id><journal-id journal-id-type="publisher-id">annbot</journal-id><journal-id journal-id-type="hwp">annbot</journal-id><journal-title-group><journal-title>Annals of Botany</journal-title></journal-title-group><issn pub-type="ppub">0305-7364</issn><issn pub-type="epub">1095-8290</issn><publisher><publisher-name>Oxford University Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">27288509</article-id><article-id pub-id-type="pmc">4970361</article-id><article-id pub-id-type="doi">10.1093/aob/mcw095</article-id><article-id pub-id-type="publisher-id">mcw095</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Articles</subject></subj-group></article-categories><title-group><article-title>Effects of silicon treatment and inoculation with <italic>Fusarium oxysporum</italic> f. sp. <italic>vasinfectum</italic> on cellular defences in root tissues of two cotton cultivars</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Whan</surname><given-names>Jennifer A.</given-names></name><xref ref-type="aff" rid="mcw095-aff1"><sup>1</sup></xref><xref ref-type="author-notes" rid="mcw095-FM1"><sup>†</sup></xref></contrib><contrib contrib-type="author"><name><surname>Dann</surname><given-names>Elizabeth K.</given-names></name><xref ref-type="aff" rid="mcw095-aff2"><sup>2</sup></xref><xref ref-type="corresp" rid="mcw095-cor1">*</xref></contrib><contrib contrib-type="author"><name><surname>Aitken</surname><given-names>Elizabeth A. B.</given-names></name><xref ref-type="aff" rid="mcw095-aff1"><sup>1</sup></xref></contrib><aff id="mcw095-aff1"><sup>1</sup>School of Agriculture and Food Sciences, The University of Queensland, St Lucia, QLD 4072, Australia</aff><aff id="mcw095-aff2"><sup>2</sup>Queensland Alliance for Agriculture and Food Innovation, University of Queensland, 2CWest Ecosciences Precinct, GPO Box 267, Brisbane, QLD 4001, Australia</aff></contrib-group><author-notes><fn id="mcw095-FM1"><p>†Present address: Advanced Analytical Centre, James Cook University, Smithfield, QLD 4878, Australia.</p></fn><corresp id="mcw095-cor1">*For correspondence. E-mail <email>e.dann@uq.edu.au</email></corresp></author-notes><pub-date pub-type="ppub"><month>8</month><year>2016</year></pub-date><pub-date pub-type="epub"><day>09</day><month>6</month><year>2016</year></pub-date><volume>118</volume><issue>2</issue><fpage>219</fpage><lpage>226</lpage><history><date date-type="received"><day>18</day><month>2</month><year>2016</year></date><date date-type="accepted"><day>22</day><month>2</month><year>2016</year></date></history><permissions><copyright-statement>© The Author 2016. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For Permissions, please email: journals.permissions@oup.com</copyright-statement><copyright-year>2016</copyright-year></permissions><abstract><p><bold>Background and Aims</bold> Silicon has been shown to enhance the resistance of plants to fungal and bacterial pathogens. Here, the effect of potassium silicate was assessed on two cotton (<italic>Gossypium hirsutum</italic>) cultivars subsequently inoculated with <italic>Fusarium oxysporum</italic> f. sp. <italic>vasinfectum</italic> (<italic>Fov</italic>). Sicot 189 is moderately resistant whilst Sicot F-1 is the second most resistant commercial cultivar presently available in Australia.</p><p><bold>Methods</bold> Transmission and light microscopy were used to compare cellular modifications in root cells after these different treatments. The accumulation of phenolic compounds and lignin was measured.</p><p><bold>Key Results</bold> Cellular alterations including the deposition of electron-dense material, degradation of fungal hyphae and occlusion of endodermal cells were more rapidly induced and more intense in endodermal and vascular regions of Sicot F-1 plants supplied with potassium silicate followed by inoculation with <italic>Fov</italic> than in similarly treated Sicot 189 plants or in silicate-treated plants of either cultivar not inoculated with <italic>Fov.</italic> Significantly more phenolic compounds were present at 7 d post-infection (dpi) in root extracts of Sicot F-1 plants treated with potassium silicate followed by inoculation with <italic>Fov</italic> compared with plants from all other treatments. The lignin concentration at 3 dpi in root material from Sicot F-1 treated with potassium silicate and inoculated with <italic>Fov</italic> was significantly higher than that from water-treated and inoculated plants.</p><p><bold>Conclusions</bold> This study demonstrates that silicon treatment can affect cellular defence responses in cotton roots subsequently inoculated with <italic>Fov</italic>, particularly in Sicot F-1, a cultivar with greater inherent resistance to this pathogen. This suggests that silicon may interact with or initiate defence pathways faster in this cultivar than in the less resistant cultivar.</p></abstract><kwd-group kwd-group-type="author"><kwd>Silicon</kwd><kwd>phenolic compounds</kwd><kwd>transmission electron microscopy</kwd><kwd>lignin</kwd><kwd>pathogen</kwd><kwd>defence</kwd><kwd><italic>Gossypium hirsutum</italic></kwd><kwd><italic>Fusarium oxysporum</italic> f. sp. <italic>vasinfectum</italic></kwd></kwd-group><counts><page-count count="8"></page-count></counts></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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