Canopy-microclimate effects on the antagonism between Trichoderma stromaticum and Moniliophthora perniciosa in shaded cacao
The collective impact of several environmental factors on the biocontrol activity of Trichoderma stromaticum (Ts) against Moniliophthora perniciosa (Mp), the cause of cacao witches' broom disease, was assessed under field conditions of shaded cacao (Theobroma cacao) in south-eastern Bahia, Braz...
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| Veröffentlicht in: | Plant pathology 2009-12, Vol.58 (6), p.1104-1115 |
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| creator | Loguercio, L.L Santos, L.S Niella, G.R Miranda, R.A.C Souza, J.T. de Collins, R.T Pomella, A.W.V |
| description | The collective impact of several environmental factors on the biocontrol activity of Trichoderma stromaticum (Ts) against Moniliophthora perniciosa (Mp), the cause of cacao witches' broom disease, was assessed under field conditions of shaded cacao (Theobroma cacao) in south-eastern Bahia, Brazil. Biocontrol experiments were performed adjacent to an automated weather station, with sensors and Ts-treated brooms placed at different canopy heights. Sporulation occurred at the same dates for all Ts isolates, but in different quantities. Broom moisture >30%, air temperature of approximately 23 ± 3°C, relative humidity >90%, solar radiation intensities |
| doi_str_mv | 10.1111/j.1365-3059.2009.02152.x |
| format | Article |
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Biocontrol experiments were performed adjacent to an automated weather station, with sensors and Ts-treated brooms placed at different canopy heights. Sporulation occurred at the same dates for all Ts isolates, but in different quantities. Broom moisture >30%, air temperature of approximately 23 ± 3°C, relative humidity >90%, solar radiation intensities <0·12 KW m⁻² and wind speed near zero were the key environmental parameters that preceded Ts sporulation events. A multiple logistic regression indicated that these weather variables combined were capable of distinguishing sporulation from non-sporulation events, with a significant effect of wind speed. Analyses of environmental factors at ground level indicated similar pre-sporulation conditions, with a soil moisture content above a threshold of 0·34 m³ m⁻³ preceding all sporulation events. The sporulation of five selected Ts isolates was compared at four different canopy heights. Isolates responded differently to weather variation in terms of sporulation and antagonism to Mp at different canopy levels, indicating that different microclimates are established along the vertical profile of a shaded cacao plantation. The potential of these findings for development of predictive mathematical models and disease-management approaches is discussed.</description><identifier>ISSN: 0032-0862</identifier><identifier>EISSN: 1365-3059</identifier><identifier>DOI: 10.1111/j.1365-3059.2009.02152.x</identifier><identifier>CODEN: PLPAAD</identifier><language>eng</language><publisher>Oxford, UK: Oxford, UK : Blackwell Publishing Ltd</publisher><subject>antagonistic interaction ; Biological and medical sciences ; biological control ; biological control agents ; canopy ; environmental factors ; Fundamental and applied biological sciences. Psychology ; fungal antagonists ; Fungal plant pathogens ; host plants ; logistic regression ; microbial physiology ; microclimate ; Moniliophthora perniciosa ; Phytopathology. Animal pests. Plant and forest protection ; plant pathogenic fungi ; relative humidity ; solar radiation ; sporulation ; Theobroma cacao ; Trichoderma stromaticum ; wind speed ; witches' broom</subject><ispartof>Plant pathology, 2009-12, Vol.58 (6), p.1104-1115</ispartof><rights>2009 The Authors. 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Biocontrol experiments were performed adjacent to an automated weather station, with sensors and Ts-treated brooms placed at different canopy heights. Sporulation occurred at the same dates for all Ts isolates, but in different quantities. Broom moisture >30%, air temperature of approximately 23 ± 3°C, relative humidity >90%, solar radiation intensities <0·12 KW m⁻² and wind speed near zero were the key environmental parameters that preceded Ts sporulation events. A multiple logistic regression indicated that these weather variables combined were capable of distinguishing sporulation from non-sporulation events, with a significant effect of wind speed. Analyses of environmental factors at ground level indicated similar pre-sporulation conditions, with a soil moisture content above a threshold of 0·34 m³ m⁻³ preceding all sporulation events. The sporulation of five selected Ts isolates was compared at four different canopy heights. Isolates responded differently to weather variation in terms of sporulation and antagonism to Mp at different canopy levels, indicating that different microclimates are established along the vertical profile of a shaded cacao plantation. The potential of these findings for development of predictive mathematical models and disease-management approaches is discussed.</description><subject>antagonistic interaction</subject><subject>Biological and medical sciences</subject><subject>biological control</subject><subject>biological control agents</subject><subject>canopy</subject><subject>environmental factors</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>fungal antagonists</subject><subject>Fungal plant pathogens</subject><subject>host plants</subject><subject>logistic regression</subject><subject>microbial physiology</subject><subject>microclimate</subject><subject>Moniliophthora perniciosa</subject><subject>Phytopathology. Animal pests. Plant and forest protection</subject><subject>plant pathogenic fungi</subject><subject>relative humidity</subject><subject>solar radiation</subject><subject>sporulation</subject><subject>Theobroma cacao</subject><subject>Trichoderma stromaticum</subject><subject>wind speed</subject><subject>witches' broom</subject><issn>0032-0862</issn><issn>1365-3059</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNqNkMFq3DAQhkVpoNukz1BdCr3YGcnWWjr0EJamDaQ00OQsxrIca7ElV_KSLH35yt2Qc4VAAn3_jOYjhDIoWV6X-5JVW1FUIFTJAVQJnAlePr8hm9eHt2QDUPEC5Ja_I-9T2gMwoZTckD879GE-FpMzMZjRTbhYavvemiXR4OkyWIp-wcfgXZpoa5cnaz29j84MobNxQpqWGHLMmcOU0Y7-yOjowjwsQ4hIZxu9My4kpM7TNGBnO2rQYLggZz2OyX54Oc_Jw_XX-9334vbnt5vd1W1hagG86HrGat5ZUSsjreF5onqrWNOCAo6dQtVK0agWsJKikrVsG9UogZJ3smqBVefk86nuHMPvg02LnlwydhzR23BImjUSRLYmtxmVJzTbSCnaXs8xO4lHzUCvvvVer1r1qlWvvvU_3_o5Rz-9dMFkcOwjeuPSa55zBjJ_K3NfTtyTG-3xv-vru7ur9ZbzH0_5HoPGx5h7PPzieUxgTd6KV38BGqqdxA</recordid><startdate>200912</startdate><enddate>200912</enddate><creator>Loguercio, L.L</creator><creator>Santos, L.S</creator><creator>Niella, G.R</creator><creator>Miranda, R.A.C</creator><creator>Souza, J.T. de</creator><creator>Collins, R.T</creator><creator>Pomella, A.W.V</creator><general>Oxford, UK : Blackwell Publishing Ltd</general><general>Blackwell Publishing Ltd</general><general>Blackwell</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7T7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>M7N</scope><scope>P64</scope></search><sort><creationdate>200912</creationdate><title>Canopy-microclimate effects on the antagonism between Trichoderma stromaticum and Moniliophthora perniciosa in shaded cacao</title><author>Loguercio, L.L ; Santos, L.S ; Niella, G.R ; Miranda, R.A.C ; Souza, J.T. de ; Collins, R.T ; Pomella, A.W.V</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4502-df1142de549c8ec230546917b0902ad9a9b8579b0a3853848b79795a82d83b013</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>antagonistic interaction</topic><topic>Biological and medical sciences</topic><topic>biological control</topic><topic>biological control agents</topic><topic>canopy</topic><topic>environmental factors</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>fungal antagonists</topic><topic>Fungal plant pathogens</topic><topic>host plants</topic><topic>logistic regression</topic><topic>microbial physiology</topic><topic>microclimate</topic><topic>Moniliophthora perniciosa</topic><topic>Phytopathology. Animal pests. Plant and forest protection</topic><topic>plant pathogenic fungi</topic><topic>relative humidity</topic><topic>solar radiation</topic><topic>sporulation</topic><topic>Theobroma cacao</topic><topic>Trichoderma stromaticum</topic><topic>wind speed</topic><topic>witches' broom</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Loguercio, L.L</creatorcontrib><creatorcontrib>Santos, L.S</creatorcontrib><creatorcontrib>Niella, G.R</creatorcontrib><creatorcontrib>Miranda, R.A.C</creatorcontrib><creatorcontrib>Souza, J.T. de</creatorcontrib><creatorcontrib>Collins, R.T</creatorcontrib><creatorcontrib>Pomella, A.W.V</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</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>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><jtitle>Plant pathology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Loguercio, L.L</au><au>Santos, L.S</au><au>Niella, G.R</au><au>Miranda, R.A.C</au><au>Souza, J.T. de</au><au>Collins, R.T</au><au>Pomella, A.W.V</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Canopy-microclimate effects on the antagonism between Trichoderma stromaticum and Moniliophthora perniciosa in shaded cacao</atitle><jtitle>Plant pathology</jtitle><date>2009-12</date><risdate>2009</risdate><volume>58</volume><issue>6</issue><spage>1104</spage><epage>1115</epage><pages>1104-1115</pages><issn>0032-0862</issn><eissn>1365-3059</eissn><coden>PLPAAD</coden><abstract>The collective impact of several environmental factors on the biocontrol activity of Trichoderma stromaticum (Ts) against Moniliophthora perniciosa (Mp), the cause of cacao witches' broom disease, was assessed under field conditions of shaded cacao (Theobroma cacao) in south-eastern Bahia, Brazil. Biocontrol experiments were performed adjacent to an automated weather station, with sensors and Ts-treated brooms placed at different canopy heights. Sporulation occurred at the same dates for all Ts isolates, but in different quantities. Broom moisture >30%, air temperature of approximately 23 ± 3°C, relative humidity >90%, solar radiation intensities <0·12 KW m⁻² and wind speed near zero were the key environmental parameters that preceded Ts sporulation events. A multiple logistic regression indicated that these weather variables combined were capable of distinguishing sporulation from non-sporulation events, with a significant effect of wind speed. Analyses of environmental factors at ground level indicated similar pre-sporulation conditions, with a soil moisture content above a threshold of 0·34 m³ m⁻³ preceding all sporulation events. The sporulation of five selected Ts isolates was compared at four different canopy heights. Isolates responded differently to weather variation in terms of sporulation and antagonism to Mp at different canopy levels, indicating that different microclimates are established along the vertical profile of a shaded cacao plantation. The potential of these findings for development of predictive mathematical models and disease-management approaches is discussed.</abstract><cop>Oxford, UK</cop><pub>Oxford, UK : Blackwell Publishing Ltd</pub><doi>10.1111/j.1365-3059.2009.02152.x</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record> |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Wiley Free Content; IngentaConnect Free/Open Access Journals; Wiley Online Library All Journals |
| subjects | antagonistic interaction Biological and medical sciences biological control biological control agents canopy environmental factors Fundamental and applied biological sciences. Psychology fungal antagonists Fungal plant pathogens host plants logistic regression microbial physiology microclimate Moniliophthora perniciosa Phytopathology. Animal pests. Plant and forest protection plant pathogenic fungi relative humidity solar radiation sporulation Theobroma cacao Trichoderma stromaticum wind speed witches' broom |
| title | Canopy-microclimate effects on the antagonism between Trichoderma stromaticum and Moniliophthora perniciosa in shaded cacao |
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