Effect of temperature and relative humidity on germination and germ tube development of Mycosphaerella fijiensis var. difformis
Conidia (three isolates) and ascospores (one isolate) of Mycosphaerella fijiensis var. difformis germinated at 20-35 C. Germination followed a quadratic response function on temperature (R(2) = 0.90-0.98), with an estimated optimum at 26.5 C. Maximum germination was observed in free-water and decrea...
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| Veröffentlicht in: | Phytopathology 1991, Vol.81 (12), p.1480-1485 |
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| creator | JACOME, L. H SCHUH, W STEVENSON, R. E |
| description | Conidia (three isolates) and ascospores (one isolate) of Mycosphaerella fijiensis var. difformis germinated at 20-35 C. Germination followed a quadratic response function on temperature (R(2) = 0.90-0.98), with an estimated optimum at 26.5 C. Maximum germination was observed in free-water and decreased at lower relative humidities (RH). Conidia germinated over a wider range of RH (92-100%) than ascospores (98-100%). Ascospores germinated earlier than conidia. The highest number of germ tubes per conidium was at 25 C for two isolates and at 30 C for the third isolate in free-water after 24 h. The number decreased at lower RH. Maximum length of germ tubes from ascospores occurred at 30 C (91-95 micrometers) followed by 25 C (68-75 micrometers), with an estimated optimum at 27.7 C. Germ tube length was similar at 100% RH and in free-water, but decreased at lower RH. Differences among the isolates and the possibility of some degree of natural variability in the response of the fungus to environmental factors are discussed. |
| doi_str_mv | 10.1094/Phyto-81-1480 |
| format | Article |
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H ; SCHUH, W ; STEVENSON, R. E</creator><creatorcontrib>JACOME, L. H ; SCHUH, W ; STEVENSON, R. E ; Chiquita Brands International Inc., Gulfport, MS</creatorcontrib><description>Conidia (three isolates) and ascospores (one isolate) of Mycosphaerella fijiensis var. difformis germinated at 20-35 C. Germination followed a quadratic response function on temperature (R(2) = 0.90-0.98), with an estimated optimum at 26.5 C. Maximum germination was observed in free-water and decreased at lower relative humidities (RH). Conidia germinated over a wider range of RH (92-100%) than ascospores (98-100%). Ascospores germinated earlier than conidia. The highest number of germ tubes per conidium was at 25 C for two isolates and at 30 C for the third isolate in free-water after 24 h. The number decreased at lower RH. Maximum length of germ tubes from ascospores occurred at 30 C (91-95 micrometers) followed by 25 C (68-75 micrometers), with an estimated optimum at 27.7 C. Germ tube length was similar at 100% RH and in free-water, but decreased at lower RH. Differences among the isolates and the possibility of some degree of natural variability in the response of the fungus to environmental factors are discussed.</description><identifier>ISSN: 0031-949X</identifier><identifier>EISSN: 1943-7684</identifier><identifier>DOI: 10.1094/Phyto-81-1480</identifier><identifier>CODEN: PHYTAJ</identifier><language>eng</language><publisher>St. Paul, MN: American Phytopathological Society</publisher><subject>Agronomy. Soil science and plant productions ; air temperature ; Biological and medical sciences ; environmental factors ; epidemiologia ; epidemiologie ; epidemiology ; esporas ; facteur du milieu ; factores ambientales ; Fundamental and applied biological sciences. Psychology ; Fungal plant pathogens ; germinacion ; germination ; honduras ; humedad relativa ; humidite relative ; musa acuminata ; mycosphaerella fijiensis ; organe reproducteur vegetal ; organos reproductores vegetales ; Phytopathology. Animal pests. Plant and forest protection ; plant reproductive organs ; relative humidity ; spore ; spores ; Systematics. Morphology. Development cycle. Physiology ; temperatura del aire ; temperature de l' air</subject><ispartof>Phytopathology, 1991, Vol.81 (12), p.1480-1485</ispartof><rights>1992 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c219t-a967a9d481be8659f09a63fab3fc0108e32c14a1316d955d6d439b5fa110bc1f3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,3724,4024,27923,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=5387713$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>JACOME, L. H</creatorcontrib><creatorcontrib>SCHUH, W</creatorcontrib><creatorcontrib>STEVENSON, R. E</creatorcontrib><creatorcontrib>Chiquita Brands International Inc., Gulfport, MS</creatorcontrib><title>Effect of temperature and relative humidity on germination and germ tube development of Mycosphaerella fijiensis var. difformis</title><title>Phytopathology</title><description>Conidia (three isolates) and ascospores (one isolate) of Mycosphaerella fijiensis var. difformis germinated at 20-35 C. Germination followed a quadratic response function on temperature (R(2) = 0.90-0.98), with an estimated optimum at 26.5 C. Maximum germination was observed in free-water and decreased at lower relative humidities (RH). Conidia germinated over a wider range of RH (92-100%) than ascospores (98-100%). Ascospores germinated earlier than conidia. The highest number of germ tubes per conidium was at 25 C for two isolates and at 30 C for the third isolate in free-water after 24 h. The number decreased at lower RH. Maximum length of germ tubes from ascospores occurred at 30 C (91-95 micrometers) followed by 25 C (68-75 micrometers), with an estimated optimum at 27.7 C. Germ tube length was similar at 100% RH and in free-water, but decreased at lower RH. Differences among the isolates and the possibility of some degree of natural variability in the response of the fungus to environmental factors are discussed.</description><subject>Agronomy. Soil science and plant productions</subject><subject>air temperature</subject><subject>Biological and medical sciences</subject><subject>environmental factors</subject><subject>epidemiologia</subject><subject>epidemiologie</subject><subject>epidemiology</subject><subject>esporas</subject><subject>facteur du milieu</subject><subject>factores ambientales</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Fungal plant pathogens</subject><subject>germinacion</subject><subject>germination</subject><subject>honduras</subject><subject>humedad relativa</subject><subject>humidite relative</subject><subject>musa acuminata</subject><subject>mycosphaerella fijiensis</subject><subject>organe reproducteur vegetal</subject><subject>organos reproductores vegetales</subject><subject>Phytopathology. Animal pests. Plant and forest protection</subject><subject>plant reproductive organs</subject><subject>relative humidity</subject><subject>spore</subject><subject>spores</subject><subject>Systematics. Morphology. Development cycle. Physiology</subject><subject>temperatura del aire</subject><subject>temperature de l' air</subject><issn>0031-949X</issn><issn>1943-7684</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><recordid>eNo9kMtLAzEQh4MoWKtHr5KD162ZJrubHKX4AkVBC96W2ezEpuyLZFvoyX_drRVP8-Cbj-HH2CWIGQijbt5Wu6FLNCSgtDhiEzBKJnmm1TGbCCEhMcp8nrKzGNdCiFyn2YR93zlHduCd4wM1PQUcNoE4thUPVOPgt8RXm8ZXftjxruVfFBrfjvux30P7mQ-bknhFW6q7vqH21_ays13sV0ijpkbu_NpTG33kWwwzXnnnutEUz9mJwzrSxV-dsuX93cfiMXl-fXha3D4ndg5mSNBkOZpKaShJZ6lxwmAmHZbSWQFCk5xbUAgSssqkaZVVSpoydQggSgtOTlly8NrQxRjIFX3wDYZdAaLYp1f8pldoKPbpjfz1ge8xWqxdwNb6-H-USp3nIEfs6oA57Ar8CiOyfAdj5kKo8YNU_gAJV3yr</recordid><startdate>1991</startdate><enddate>1991</enddate><creator>JACOME, L. H</creator><creator>SCHUH, W</creator><creator>STEVENSON, R. E</creator><general>American Phytopathological Society</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>1991</creationdate><title>Effect of temperature and relative humidity on germination and germ tube development of Mycosphaerella fijiensis var. difformis</title><author>JACOME, L. H ; SCHUH, W ; STEVENSON, R. E</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c219t-a967a9d481be8659f09a63fab3fc0108e32c14a1316d955d6d439b5fa110bc1f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>Agronomy. Soil science and plant productions</topic><topic>air temperature</topic><topic>Biological and medical sciences</topic><topic>environmental factors</topic><topic>epidemiologia</topic><topic>epidemiologie</topic><topic>epidemiology</topic><topic>esporas</topic><topic>facteur du milieu</topic><topic>factores ambientales</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Fungal plant pathogens</topic><topic>germinacion</topic><topic>germination</topic><topic>honduras</topic><topic>humedad relativa</topic><topic>humidite relative</topic><topic>musa acuminata</topic><topic>mycosphaerella fijiensis</topic><topic>organe reproducteur vegetal</topic><topic>organos reproductores vegetales</topic><topic>Phytopathology. Animal pests. Plant and forest protection</topic><topic>plant reproductive organs</topic><topic>relative humidity</topic><topic>spore</topic><topic>spores</topic><topic>Systematics. Morphology. Development cycle. Physiology</topic><topic>temperatura del aire</topic><topic>temperature de l' air</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>JACOME, L. H</creatorcontrib><creatorcontrib>SCHUH, W</creatorcontrib><creatorcontrib>STEVENSON, R. E</creatorcontrib><creatorcontrib>Chiquita Brands International Inc., Gulfport, MS</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Phytopathology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>JACOME, L. H</au><au>SCHUH, W</au><au>STEVENSON, R. E</au><aucorp>Chiquita Brands International Inc., Gulfport, MS</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of temperature and relative humidity on germination and germ tube development of Mycosphaerella fijiensis var. difformis</atitle><jtitle>Phytopathology</jtitle><date>1991</date><risdate>1991</risdate><volume>81</volume><issue>12</issue><spage>1480</spage><epage>1485</epage><pages>1480-1485</pages><issn>0031-949X</issn><eissn>1943-7684</eissn><coden>PHYTAJ</coden><abstract>Conidia (three isolates) and ascospores (one isolate) of Mycosphaerella fijiensis var. difformis germinated at 20-35 C. Germination followed a quadratic response function on temperature (R(2) = 0.90-0.98), with an estimated optimum at 26.5 C. Maximum germination was observed in free-water and decreased at lower relative humidities (RH). Conidia germinated over a wider range of RH (92-100%) than ascospores (98-100%). Ascospores germinated earlier than conidia. The highest number of germ tubes per conidium was at 25 C for two isolates and at 30 C for the third isolate in free-water after 24 h. The number decreased at lower RH. Maximum length of germ tubes from ascospores occurred at 30 C (91-95 micrometers) followed by 25 C (68-75 micrometers), with an estimated optimum at 27.7 C. Germ tube length was similar at 100% RH and in free-water, but decreased at lower RH. Differences among the isolates and the possibility of some degree of natural variability in the response of the fungus to environmental factors are discussed.</abstract><cop>St. Paul, MN</cop><pub>American Phytopathological Society</pub><doi>10.1094/Phyto-81-1480</doi><tpages>6</tpages></addata></record> |
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| ispartof | Phytopathology, 1991, Vol.81 (12), p.1480-1485 |
| issn | 0031-949X 1943-7684 |
| language | eng |
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| source | Free E-Journal (出版社公開部分のみ）; American Phytopathological Society Journal Back Issues |
| subjects | Agronomy. Soil science and plant productions air temperature Biological and medical sciences environmental factors epidemiologia epidemiologie epidemiology esporas facteur du milieu factores ambientales Fundamental and applied biological sciences. Psychology Fungal plant pathogens germinacion germination honduras humedad relativa humidite relative musa acuminata mycosphaerella fijiensis organe reproducteur vegetal organos reproductores vegetales Phytopathology. Animal pests. Plant and forest protection plant reproductive organs relative humidity spore spores Systematics. Morphology. Development cycle. Physiology temperatura del aire temperature de l' air |
| title | Effect of temperature and relative humidity on germination and germ tube development of Mycosphaerella fijiensis var. difformis |
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