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The Ability of the Antagonist Yeast Pichia Guilliermondii Strain Z1 to Suppress Green Mould Infection in Citrus Fruit

Identifieur interne : 000F99 ( Pmc/Curation ); précédent : 000F98; suivant : 001000

The Ability of the Antagonist Yeast Pichia Guilliermondii Strain Z1 to Suppress Green Mould Infection in Citrus Fruit

Auteurs : Rachid Lahlali [Maroc] ; Younes Hamadi [Maroc] ; Mohammed El Guilli [Maroc] ; M. Haissam Jijakli [Maroc]

Source :

RBID : PMC:5076700

Abstract

In previous studies it was shown that Pichia guilliermondii strain Z1, isolated from healthy Moroccan citrus Valencia-Late oranges, was effective against Penicillium italicum. Here the effectiveness of strain Z1 was assessed against Penicillium digitatum, the causal agent of green mould, under different temperature (5-25°C) and relative humidity (RH) (45-100%) regimes for its reliable and large-scale application in packinghouse. All main effects and interactions were significant (P<0.0001). In the pathogen control, the largest lesion diameter was at an RH range between 98 and 100%, regardless of the incubation temperature. The efficacy of strain Z1 was not dependent on the environment and reduced disease incidence by >80%. Its applications as a formulated product significantly reduced the incidence of infected fruit (55%) and the percentage of infected wounds (47%) compared to the only pathogen control treatment. However, disease control with formulated product was significantly less than that obtained with thiabendazole (30%) or strain Z1 culturable cells (35%). These results highlight that strain Z1 is an effective biological control agent for control of green mould under varying environmental conditions, and control may be optimized by combining its use with other environmentally-safe post-harvest treatments or improved formulation.


Url:
DOI: 10.4081/ijfs.2014.4774
PubMed: 27800373
PubMed Central: 5076700

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PMC:5076700

Le document en format XML

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Strain Z1 to Suppress Green Mould Infection in Citrus Fruit</title>
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,
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,
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Here the effectiveness of strain Z1 was assessed against
<italic>Penicillium digitatum</italic>
, the causal agent of green mould, under different temperature (5-25°C) and relative humidity (RH) (45-100%) regimes for its reliable and large-scale application in packinghouse. All main effects and interactions were significant (P<0.0001). In the pathogen control, the largest lesion diameter was at an RH range between 98 and 100%, regardless of the incubation temperature. The efficacy of strain Z1 was not dependent on the environment and reduced disease incidence by >80%. Its applications as a formulated product significantly reduced the incidence of infected fruit (55%) and the percentage of infected wounds (47%) compared to the only pathogen control treatment. However, disease control with formulated product was significantly less than that obtained with thiabendazole (30%) or strain Z1 culturable cells (35%). These results highlight that strain Z1 is an effective biological control agent for control of green mould under varying environmental conditions, and control may be optimized by combining its use with other environmentally-safe post-harvest treatments or improved formulation.</p>
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<journal-id journal-id-type="nlm-ta">Ital J Food Saf</journal-id>
<journal-id journal-id-type="iso-abbrev">Ital J Food Saf</journal-id>
<journal-id journal-id-type="publisher-id">IJFS</journal-id>
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<journal-title>Italian Journal of Food Safety</journal-title>
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<issn pub-type="epub">2239-7132</issn>
<publisher>
<publisher-name>PAGEPress Publications, Pavia, Italy</publisher-name>
</publisher>
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<article-id pub-id-type="pmid">27800373</article-id>
<article-id pub-id-type="pmc">5076700</article-id>
<article-id pub-id-type="doi">10.4081/ijfs.2014.4774</article-id>
<article-categories>
<subj-group subj-group-type="heading">
<subject>Article</subject>
</subj-group>
</article-categories>
<title-group>
<article-title>The Ability of the Antagonist Yeast
<italic>Pichia Guilliermondii</italic>
Strain Z1 to Suppress Green Mould Infection in Citrus Fruit</article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author" corresp="yes">
<name>
<surname>Lahlali</surname>
<given-names>Rachid</given-names>
</name>
<xref ref-type="aff" rid="aff001">
<sup>1</sup>
</xref>
<xref ref-type="corresp" rid="cor1"></xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Hamadi</surname>
<given-names>Younes</given-names>
</name>
<xref ref-type="aff" rid="aff001">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff002">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>El Guilli</surname>
<given-names>Mohammed</given-names>
</name>
<xref ref-type="aff" rid="aff003">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Jijakli</surname>
<given-names>M. Haissam</given-names>
</name>
<xref ref-type="aff" rid="aff001">
<sup>1</sup>
</xref>
</contrib>
</contrib-group>
<aff id="aff001">
<label>1</label>
Unité de Phytopathologie, Gembloux Agro-Bio Tech,
<institution>Université de Liège</institution>
,
<addr-line>Gembloux, Belgium, Morocco</addr-line>
</aff>
<aff id="aff002">
<label>2</label>
Laboratoire de Phytopathologie,
<addr-line>Faculté des Sciences</addr-line>
,
<institution>Université Ibn Tofail</institution>
,
<addr-line>Kenitra, Morocco</addr-line>
</aff>
<aff id="aff003">
<label>3</label>
<institution>Institut National de la Recherche Agronomique (INRA)-El Menzeh, Laboratoire de Phytopathologie</institution>
,
<addr-line>Kenitra, Morocco</addr-line>
</aff>
<author-notes>
<corresp id="cor1">Unité de Phytopathologie, Gembloux Agro-Bio Tech, Université de Liège, Passage des Déportés 2, 5030 Gembloux, Belgium.
<phone>+32.81.622431</phone>
-
<fax>+32.81.610126</fax>
.
<email>lahlali.r@gmail.com</email>
</corresp>
</author-notes>
<pub-date pub-type="epub">
<day>19</day>
<month>12</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="collection">
<day>09</day>
<month>12</month>
<year>2014</year>
</pub-date>
<volume>3</volume>
<issue>4</issue>
<elocation-id>4774</elocation-id>
<history>
<date date-type="received">
<day>14</day>
<month>10</month>
<year>2014</year>
</date>
<date date-type="rev-recd">
<day>26</day>
<month>10</month>
<year>2014</year>
</date>
<date date-type="accepted">
<day>26</day>
<month>10</month>
<year>2014</year>
</date>
</history>
<permissions>
<copyright-statement>©Copyright R. Lahlali et al.</copyright-statement>
<copyright-year>2014</copyright-year>
<copyright-holder>Licensee PAGEPress, Italy</copyright-holder>
<license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by-nc/3.0/">
<license-p>This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (
<uri xlink:href="http://creativecommons.org/licenses/by-nc/3.0/">http://creativecommons.org/licenses/by-nc/3.0/</uri>
) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p>
</license>
</permissions>
<abstract>
<p>In previous studies it was shown that
<italic>Pichia guilliermondii</italic>
strain Z1, isolated from healthy Moroccan citrus Valencia-Late oranges, was effective against
<italic>Penicillium italicum.</italic>
Here the effectiveness of strain Z1 was assessed against
<italic>Penicillium digitatum</italic>
, the causal agent of green mould, under different temperature (5-25°C) and relative humidity (RH) (45-100%) regimes for its reliable and large-scale application in packinghouse. All main effects and interactions were significant (P<0.0001). In the pathogen control, the largest lesion diameter was at an RH range between 98 and 100%, regardless of the incubation temperature. The efficacy of strain Z1 was not dependent on the environment and reduced disease incidence by >80%. Its applications as a formulated product significantly reduced the incidence of infected fruit (55%) and the percentage of infected wounds (47%) compared to the only pathogen control treatment. However, disease control with formulated product was significantly less than that obtained with thiabendazole (30%) or strain Z1 culturable cells (35%). These results highlight that strain Z1 is an effective biological control agent for control of green mould under varying environmental conditions, and control may be optimized by combining its use with other environmentally-safe post-harvest treatments or improved formulation.</p>
</abstract>
<kwd-group>
<title>Key words</title>
<kwd>Citrus fruit</kwd>
<kwd>
<italic>Penicillium digitatum</italic>
</kwd>
<kwd>
<italic>Pichia guilliermondii</italic>
</kwd>
<kwd>Temperature</kwd>
<kwd>Relative humidity</kwd>
</kwd-group>
<counts>
<fig-count count="3"></fig-count>
<table-count count="1"></table-count>
<equation-count count="0"></equation-count>
<ref-count count="19"></ref-count>
<page-count count="4"></page-count>
</counts>
</article-meta>
</front>
<floats-group>
<fig id="fig001" orientation="portrait" position="float">
<label>Figure 1.</label>
<caption>
<p>
<italic>Inhibition effect of</italic>
Pichia guilliermondii strain Z1 (1×10
<sup>8</sup>
CFU/mL) against Penicillium digitatum (1×10
<sup>5</sup>
spores/mL) on Valencia-Late fruit at different temperatures (a=5°C; b=10°C; c=15°C; d=20°C; e=25°C) and different relative humidities. The values are the mean of three biological replicates over time (4 fruits per replicate).</p>
</caption>
<graphic xlink:href="ijfs-2014-4-4774-g001"></graphic>
</fig>
<fig id="fig002" orientation="portrait" position="float">
<label>Figure 2.</label>
<caption>
<p>Percentage of decayed Valencia-Late citrus fruit treated with
<italic>Penicillium guilliermomdii</italic>
strain Z1 produced in Petri dishes (1×10
<sup>8</sup>
CFU/mL) on industrial scale (1 g/3 L), or TBZ (1 g/L) and then inoculated 24 later with
<italic>Penicillium digitatum</italic>
(1×10
<sup>5</sup>
spores/mL). The values are the means of four biological replicates over time (10 fruits per replicate).</p>
</caption>
<graphic xlink:href="ijfs-2014-4-4774-g002"></graphic>
</fig>
<fig id="fig003" orientation="portrait" position="float">
<label>Figure 3.</label>
<caption>
<p>Percentage of infected wounds of Valencia-Late citrus fruit treated with
<italic>Penicillium digitatum</italic>
(1×10
<sup>5</sup>
spores/mL), after 7 days of incubation at 24°C as affected by P
<italic>ichia guilliermomdii</italic>
strain Z1 produced in Petri dishes (1×10
<sup>8</sup>
CFU/mL) on industrial scale (1 g/3 L), or TBZ (1 g/L). The values are the means of four biological replicates over time (10 fruits per replicate).</p>
</caption>
<graphic xlink:href="ijfs-2014-4-4774-g003"></graphic>
</fig>
<table-wrap id="table001" orientation="portrait" position="float">
<label>Table 1.</label>
<caption>
<p>Analysis of variance of the effect of
<italic>Pichia guilliermondii</italic>
strain Z1, relative humidity and temperature on lesion diameter of
<italic>Penicillium digitatum</italic>
.</p>
</caption>
<table frame="box" rules="all">
<thead>
<tr>
<th align="left" valign="top" rowspan="1" colspan="1">Source of variation</th>
<th align="center" valign="top" rowspan="1" colspan="1">DF</th>
<th align="center" valign="top" rowspan="1" colspan="1">SS</th>
<th align="center" valign="top" rowspan="1" colspan="1">MS</th>
<th align="center" valign="top" rowspan="1" colspan="1">F</th>
<th align="center" valign="top" rowspan="1" colspan="1">P</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left" valign="top" rowspan="1" colspan="1">A</td>
<td align="center" valign="top" rowspan="1" colspan="1">1</td>
<td align="center" valign="top" rowspan="1" colspan="1">48,846.9</td>
<td align="center" valign="top" rowspan="1" colspan="1">48,846.9</td>
<td align="center" valign="top" rowspan="1" colspan="1">1517.0</td>
<td align="center" valign="top" rowspan="1" colspan="1">0.000
<xref ref-type="table-fn" rid="tfn001">*</xref>
</td>
</tr>
<tr>
<td align="left" valign="top" rowspan="1" colspan="1">B</td>
<td align="center" valign="top" rowspan="1" colspan="1">4</td>
<td align="center" valign="top" rowspan="1" colspan="1">24,198.9</td>
<td align="center" valign="top" rowspan="1" colspan="1">6049.7</td>
<td align="center" valign="top" rowspan="1" colspan="1">187.8</td>
<td align="center" valign="top" rowspan="1" colspan="1">0.000
<xref ref-type="table-fn" rid="tfn001">*</xref>
</td>
</tr>
<tr>
<td align="left" valign="top" rowspan="1" colspan="1">C</td>
<td align="center" valign="top" rowspan="1" colspan="1">4</td>
<td align="center" valign="top" rowspan="1" colspan="1">2313.7</td>
<td align="center" valign="top" rowspan="1" colspan="1">578.4</td>
<td align="center" valign="top" rowspan="1" colspan="1">17.9</td>
<td align="center" valign="top" rowspan="1" colspan="1">0.000
<xref ref-type="table-fn" rid="tfn001">*</xref>
</td>
</tr>
<tr>
<td align="left" valign="top" rowspan="1" colspan="1">A×B</td>
<td align="center" valign="top" rowspan="1" colspan="1">4</td>
<td align="center" valign="top" rowspan="1" colspan="1">16,409.1</td>
<td align="center" valign="top" rowspan="1" colspan="1">4102.2</td>
<td align="center" valign="top" rowspan="1" colspan="1">127.4</td>
<td align="center" valign="top" rowspan="1" colspan="1">0.000
<xref ref-type="table-fn" rid="tfn001">*</xref>
</td>
</tr>
<tr>
<td align="left" valign="top" rowspan="1" colspan="1">A×C</td>
<td align="center" valign="top" rowspan="1" colspan="1">4</td>
<td align="center" valign="top" rowspan="1" colspan="1">2151.1</td>
<td align="center" valign="top" rowspan="1" colspan="1">537.8</td>
<td align="center" valign="top" rowspan="1" colspan="1">16.7</td>
<td align="center" valign="top" rowspan="1" colspan="1">0.000
<xref ref-type="table-fn" rid="tfn001">*</xref>
</td>
</tr>
<tr>
<td align="left" valign="top" rowspan="1" colspan="1">B×C</td>
<td align="center" valign="top" rowspan="1" colspan="1">16</td>
<td align="center" valign="top" rowspan="1" colspan="1">1653.7</td>
<td align="center" valign="top" rowspan="1" colspan="1">103.3</td>
<td align="center" valign="top" rowspan="1" colspan="1">3.2</td>
<td align="center" valign="top" rowspan="1" colspan="1">0.000
<xref ref-type="table-fn" rid="tfn001">*</xref>
</td>
</tr>
<tr>
<td align="left" valign="top" rowspan="1" colspan="1">A×B×C</td>
<td align="center" valign="top" rowspan="1" colspan="1">16</td>
<td align="center" valign="top" rowspan="1" colspan="1">1773.5</td>
<td align="center" valign="top" rowspan="1" colspan="1">110.8</td>
<td align="center" valign="top" rowspan="1" colspan="1">3.4</td>
<td align="center" valign="top" rowspan="1" colspan="1">0.000
<xref ref-type="table-fn" rid="tfn001">*</xref>
</td>
</tr>
<tr>
<td align="left" valign="top" rowspan="1" colspan="1">Error</td>
<td align="center" valign="top" rowspan="1" colspan="1">150</td>
<td align="center" valign="top" rowspan="1" colspan="1">4829.7</td>
<td align="center" valign="top" rowspan="1" colspan="1">32.2</td>
<td align="center" valign="top" rowspan="1" colspan="1">-</td>
<td align="center" valign="top" rowspan="1" colspan="1">-</td>
</tr>
</tbody>
</table>
<table-wrap-foot>
<fn>
<p>A, biocontrol agent; B, relative humidity; C, temperature; DF, degree of freedom; SS, sum of squares; MS, mean square.</p>
</fn>
<fn id="tfn001">
<p>*P<0.0001.</p>
</fn>
</table-wrap-foot>
</table-wrap>
</floats-group>
</pmc>
</record>

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