Effects of humidity on the development of grapevine powdery mildew
ABSTRACT The effects of humidity on powdery mildew development on grape seedlings and the germination of Uncinula necator conidia in vitro were examined. Studies were conducted at an optimum temperature of 25 +/- 2 degrees C. Disease on foliage was markedly affected by humidity levels in the test ra...
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| Veröffentlicht in: | Phytopathology 2003-09, Vol.93 (9), p.1137-1144 |
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| creator | Carroll, J.E Wilcox, W.F |
| description | ABSTRACT The effects of humidity on powdery mildew development on grape seedlings and the germination of Uncinula necator conidia in vitro were examined. Studies were conducted at an optimum temperature of 25 +/- 2 degrees C. Disease on foliage was markedly affected by humidity levels in the test range of 39 to 98% relative humidity (RH), corresponding to vapor pressure deficits (VPD) of 1,914 to 61 Pa. Incidence and severity increased with increasing humidity to an optimum near 85% RH, and then appeared to plateau or decrease marginally at higher values. Conidial density and chain length also were proportional to humidity, but were influenced less strongly. There was a strong, positive linear relationship between humidity level and frequency of conidium germination with RH treatments of |
| doi_str_mv | 10.1094/phyto.2003.93.9.1137 |
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Studies were conducted at an optimum temperature of 25 +/- 2 degrees C. Disease on foliage was markedly affected by humidity levels in the test range of 39 to 98% relative humidity (RH), corresponding to vapor pressure deficits (VPD) of 1,914 to 61 Pa. Incidence and severity increased with increasing humidity to an optimum near 85% RH, and then appeared to plateau or decrease marginally at higher values. Conidial density and chain length also were proportional to humidity, but were influenced less strongly. There was a strong, positive linear relationship between humidity level and frequency of conidium germination with RH treatments of </=84%. However, germination frequency fell sharply at RH levels above a mean of 87%. All measures of humidity were equally accurate in predicting germination responses; however, VPD was slightly more effective than RH in accounting for effects on disease development and pathogen sporulation, and both were more effective than absolute humidity. Humidity appears to play a significant role in grapevine powdery mildew epidemiology, confirming the benefits of management practices to avoid and mitigate high humidity in the vineyard canopy.</description><identifier>ISSN: 0031-949X</identifier><identifier>EISSN: 1943-7684</identifier><identifier>DOI: 10.1094/phyto.2003.93.9.1137</identifier><identifier>PMID: 18944098</identifier><identifier>CODEN: PHYTAJ</identifier><language>eng</language><publisher>St. Paul, MN: American Phytopathological Society</publisher><subject>Biological and medical sciences ; conidia ; epidemiology ; Fundamental and applied biological sciences. Psychology ; Fungal plant pathogens ; grapes ; leaves ; pathogenesis ; pathogenicity ; Pathology, epidemiology, host-fungus relationships. Damages, economic importance ; Phytopathology. Animal pests. Plant and forest protection ; plant pathogenic fungi ; powdery mildew ; relative humidity ; seedlings ; spore germination ; sporulation ; symptoms ; Uncinula necator ; vapor pressure ; Vitis vinifera</subject><ispartof>Phytopathology, 2003-09, Vol.93 (9), p.1137-1144</ispartof><rights>2004 INIST-CNRS</rights><rights>Copyright American Phytopathological Society Sep 2003</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c579t-d7b77fe26abb5d5a75fdb85ff959e0c981c1b47ac7b81575bc7fa6679fcbe2ac3</citedby><cites>FETCH-LOGICAL-c579t-d7b77fe26abb5d5a75fdb85ff959e0c981c1b47ac7b81575bc7fa6679fcbe2ac3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,3711,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=15068852$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18944098$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Carroll, J.E</creatorcontrib><creatorcontrib>Wilcox, W.F</creatorcontrib><title>Effects of humidity on the development of grapevine powdery mildew</title><title>Phytopathology</title><addtitle>Phytopathology</addtitle><description>ABSTRACT The effects of humidity on powdery mildew development on grape seedlings and the germination of Uncinula necator conidia in vitro were examined. Studies were conducted at an optimum temperature of 25 +/- 2 degrees C. Disease on foliage was markedly affected by humidity levels in the test range of 39 to 98% relative humidity (RH), corresponding to vapor pressure deficits (VPD) of 1,914 to 61 Pa. Incidence and severity increased with increasing humidity to an optimum near 85% RH, and then appeared to plateau or decrease marginally at higher values. Conidial density and chain length also were proportional to humidity, but were influenced less strongly. There was a strong, positive linear relationship between humidity level and frequency of conidium germination with RH treatments of </=84%. However, germination frequency fell sharply at RH levels above a mean of 87%. All measures of humidity were equally accurate in predicting germination responses; however, VPD was slightly more effective than RH in accounting for effects on disease development and pathogen sporulation, and both were more effective than absolute humidity. Humidity appears to play a significant role in grapevine powdery mildew epidemiology, confirming the benefits of management practices to avoid and mitigate high humidity in the vineyard canopy.</description><subject>Biological and medical sciences</subject><subject>conidia</subject><subject>epidemiology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Fungal plant pathogens</subject><subject>grapes</subject><subject>leaves</subject><subject>pathogenesis</subject><subject>pathogenicity</subject><subject>Pathology, epidemiology, host-fungus relationships. Damages, economic importance</subject><subject>Phytopathology. Animal pests. Plant and forest protection</subject><subject>plant pathogenic fungi</subject><subject>powdery mildew</subject><subject>relative humidity</subject><subject>seedlings</subject><subject>spore germination</subject><subject>sporulation</subject><subject>symptoms</subject><subject>Uncinula necator</subject><subject>vapor pressure</subject><subject>Vitis vinifera</subject><issn>0031-949X</issn><issn>1943-7684</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp90V9rFDEQAPAgij2r30B0EbRPe-bvJnnUUm2h0IIt6FNIspPelt3Nmuy23Lc3xx0U-iAZyMP8ZoZkEHpP8Jpgzb9Om-0c1xRjttYl1oQw-QKtiOaslo3iL9Gq5Eituf59hN7kfI8xlko0r9ERUZpzrNUKfT8LAfycqxiqzTJ0bTdvqzhW8waqFh6gj9MA47xL3yU7wUM3QjXFxxbSthq6voXHt-hVsH2Gd4f7GN3-OLs5Pa8vr35enH67rL2Qeq5b6aQMQBvrnGiFlSK0TokQtNCAvVbEE8el9dIpIqRwXgbbNFIH74Baz47Ryb7vlOLfBfJshi576Hs7QlyykYxJrjTDRX75ryRKaVrGFvjpGbyPSxrLKwxlhFLecFYQ3yOfYs4JgplSN9i0NQSb3SrM9fmfmyuzW4XRJcxuFaXsw6H34gZon4oOf1_A5wOw2ds-JDv6Lj85gRulBC3u494FG429S8Xc_qKYMEwwo-Wwf8H0m_o</recordid><startdate>20030901</startdate><enddate>20030901</enddate><creator>Carroll, J.E</creator><creator>Wilcox, W.F</creator><general>American Phytopathological Society</general><scope>FBQ</scope><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7X2</scope><scope>7X7</scope><scope>7XB</scope><scope>88A</scope><scope>88E</scope><scope>8AO</scope><scope>8FE</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>LK8</scope><scope>M0K</scope><scope>M0S</scope><scope>M1P</scope><scope>M7P</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>S0X</scope><scope>7T7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>7X8</scope></search><sort><creationdate>20030901</creationdate><title>Effects of humidity on the development of grapevine powdery mildew</title><author>Carroll, J.E ; Wilcox, W.F</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c579t-d7b77fe26abb5d5a75fdb85ff959e0c981c1b47ac7b81575bc7fa6679fcbe2ac3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Biological and medical sciences</topic><topic>conidia</topic><topic>epidemiology</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Fungal plant pathogens</topic><topic>grapes</topic><topic>leaves</topic><topic>pathogenesis</topic><topic>pathogenicity</topic><topic>Pathology, epidemiology, host-fungus relationships. Damages, economic importance</topic><topic>Phytopathology. Animal pests. Plant and forest protection</topic><topic>plant pathogenic fungi</topic><topic>powdery mildew</topic><topic>relative humidity</topic><topic>seedlings</topic><topic>spore germination</topic><topic>sporulation</topic><topic>symptoms</topic><topic>Uncinula necator</topic><topic>vapor pressure</topic><topic>Vitis vinifera</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Carroll, J.E</creatorcontrib><creatorcontrib>Wilcox, W.F</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Agricultural Science Collection</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Biology Database (Alumni Edition)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>ProQuest Biological Science Collection</collection><collection>Agricultural Science Database</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Biological Science Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>SIRS Editorial</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Phytopathology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Carroll, J.E</au><au>Wilcox, W.F</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of humidity on the development of grapevine powdery mildew</atitle><jtitle>Phytopathology</jtitle><addtitle>Phytopathology</addtitle><date>2003-09-01</date><risdate>2003</risdate><volume>93</volume><issue>9</issue><spage>1137</spage><epage>1144</epage><pages>1137-1144</pages><issn>0031-949X</issn><eissn>1943-7684</eissn><coden>PHYTAJ</coden><abstract>ABSTRACT The effects of humidity on powdery mildew development on grape seedlings and the germination of Uncinula necator conidia in vitro were examined. Studies were conducted at an optimum temperature of 25 +/- 2 degrees C. Disease on foliage was markedly affected by humidity levels in the test range of 39 to 98% relative humidity (RH), corresponding to vapor pressure deficits (VPD) of 1,914 to 61 Pa. Incidence and severity increased with increasing humidity to an optimum near 85% RH, and then appeared to plateau or decrease marginally at higher values. Conidial density and chain length also were proportional to humidity, but were influenced less strongly. There was a strong, positive linear relationship between humidity level and frequency of conidium germination with RH treatments of </=84%. However, germination frequency fell sharply at RH levels above a mean of 87%. All measures of humidity were equally accurate in predicting germination responses; however, VPD was slightly more effective than RH in accounting for effects on disease development and pathogen sporulation, and both were more effective than absolute humidity. Humidity appears to play a significant role in grapevine powdery mildew epidemiology, confirming the benefits of management practices to avoid and mitigate high humidity in the vineyard canopy.</abstract><cop>St. Paul, MN</cop><pub>American Phytopathological Society</pub><pmid>18944098</pmid><doi>10.1094/phyto.2003.93.9.1137</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection; American Phytopathological Society Journal Back Issues |
| subjects | Biological and medical sciences conidia epidemiology Fundamental and applied biological sciences. Psychology Fungal plant pathogens grapes leaves pathogenesis pathogenicity Pathology, epidemiology, host-fungus relationships. Damages, economic importance Phytopathology. Animal pests. Plant and forest protection plant pathogenic fungi powdery mildew relative humidity seedlings spore germination sporulation symptoms Uncinula necator vapor pressure Vitis vinifera |
| title | Effects of humidity on the development of grapevine powdery mildew |
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