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Light controls phospholipase A2α and β gene expression in Citrus sinensis

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Light controls phospholipase A2α and β gene expression in Citrus sinensis

Auteurs : Hui-Ling Liao [États-Unis] ; Jacqueline K. Burns [États-Unis]

Source :

Journal of experimental botany [ 0022-0957 ] ; 2010.

RBID : Pascal:10-0291047

Descripteurs français

Pascal (Inist)
- Expression génique, Facteur photique, Photorégulation, Botanique, Citrus sinensis, Phospholipase.
Wicri :
- topic : Botanique.

English descriptors

KwdEn :
- Botany, Citrus sinensis, Gene expression, Light effect, Phospholipase, Photoregulation.

Abstract

The low-molecular weight secretory phospholipase A₂α (CssPLA₂α) and β (CsPLA₂β) cloned in this study exhibited diurnal rhythmicity in leaf tissue of Citrus sinensis. Only CssPLA₂α displayed distinct diurnal patterns in fruit tissues. CssPLA₂α and CsPLA₂β diurnal expression exhibited periods of approximately 24 h; CssPLA₂α amplitude averaged 990-fold in the leaf blades from field-grown trees, whereas CsPLA₂β amplitude averaged 6.4-fold. Diurnal oscillation of CssPLA₂α and CsPLA₂β gene expression in the growth chamber experiments was markedly dampened 24 h after transfer to continuous light or dark conditions. CssPLA₂α and CsPLA₂β expressions were redundantly mediated by blue, green, red and red/far-red light, but blue light was a major factor affecting CssPLA₂α and CsPLA₂β expression. Total and low molecular weight CsPLA₂ enzyme activity closely followed diurnal changes in CssPLA₂α transcript expression in leaf blades of seedlings treated with low intensity blue light (24 μmol m^-2 s^-1). Compared with CssPLA₂α basal expression, CsPLA₂β expression was at least 10-fold higher. Diurnal fluctuation and light regulation of PLA₂ gene expression and enzyme activity in citrus leaf and fruit tissues suggests that accompanying diurnal changes in lipophilic second messengers participate in the regulation of physiological processes associated with phospholipase A₂ action.

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Pascal:10-0291047

Le document en format XML

<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Light controls phospholipase A<sub>2</sub>
α and β gene expression in Citrus sinensis</title>
<author><name sortKey="Liao, Hui Ling" sort="Liao, Hui Ling" uniqKey="Liao H" first="Hui-Ling" last="Liao">Hui-Ling Liao</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>University of Florida, IFAS, Horticultural Sciences Department, Citrus Research and Education Center, 700 Experiment Station Road</s1>
<s2>Lake Alfred, Florida 33850-2299</s2>
<s3>USA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>États-Unis</country>
<wicri:noRegion>Lake Alfred, Florida 33850-2299</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Burns, Jacqueline K" sort="Burns, Jacqueline K" uniqKey="Burns J" first="Jacqueline K." last="Burns">Jacqueline K. Burns</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>University of Florida, IFAS, Horticultural Sciences Department, Citrus Research and Education Center, 700 Experiment Station Road</s1>
<s2>Lake Alfred, Florida 33850-2299</s2>
<s3>USA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>États-Unis</country>
<wicri:noRegion>Lake Alfred, Florida 33850-2299</wicri:noRegion>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">INIST</idno>
<idno type="inist">10-0291047</idno>
<date when="2010">2010</date>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Light controls phospholipase A<sub>2</sub>
α and β gene expression in Citrus sinensis</title>
<author><name sortKey="Liao, Hui Ling" sort="Liao, Hui Ling" uniqKey="Liao H" first="Hui-Ling" last="Liao">Hui-Ling Liao</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>University of Florida, IFAS, Horticultural Sciences Department, Citrus Research and Education Center, 700 Experiment Station Road</s1>
<s2>Lake Alfred, Florida 33850-2299</s2>
<s3>USA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>États-Unis</country>
<wicri:noRegion>Lake Alfred, Florida 33850-2299</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Burns, Jacqueline K" sort="Burns, Jacqueline K" uniqKey="Burns J" first="Jacqueline K." last="Burns">Jacqueline K. Burns</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>University of Florida, IFAS, Horticultural Sciences Department, Citrus Research and Education Center, 700 Experiment Station Road</s1>
<s2>Lake Alfred, Florida 33850-2299</s2>
<s3>USA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>États-Unis</country>
<wicri:noRegion>Lake Alfred, Florida 33850-2299</wicri:noRegion>
</affiliation>
</author>
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<series><title level="j" type="main">Journal of experimental botany</title>
<title level="j" type="abbreviated">J. exp. bot.</title>
<idno type="ISSN">0022-0957</idno>
<imprint><date when="2010">2010</date>
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<seriesStmt><title level="j" type="main">Journal of experimental botany</title>
<title level="j" type="abbreviated">J. exp. bot.</title>
<idno type="ISSN">0022-0957</idno>
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</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Botany</term>
<term>Citrus sinensis</term>
<term>Gene expression</term>
<term>Light effect</term>
<term>Phospholipase</term>
<term>Photoregulation</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Expression génique</term>
<term>Facteur photique</term>
<term>Photorégulation</term>
<term>Botanique</term>
<term>Citrus sinensis</term>
<term>Phospholipase</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Botanique</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">The low-molecular weight secretory phospholipase A<sub>2</sub>
α (CssPLA<sub>2</sub>
α) and β (CsPLA<sub>2</sub>
β) cloned in this study exhibited diurnal rhythmicity in leaf tissue of Citrus sinensis. Only CssPLA<sub>2</sub>
α displayed distinct diurnal patterns in fruit tissues. CssPLA<sub>2</sub>
α and CsPLA<sub>2</sub>
β diurnal expression exhibited periods of approximately 24 h; CssPLA<sub>2</sub>
α amplitude averaged 990-fold in the leaf blades from field-grown trees, whereas CsPLA<sub>2</sub>
β amplitude averaged 6.4-fold. Diurnal oscillation of CssPLA<sub>2</sub>
α and CsPLA<sub>2</sub>
β gene expression in the growth chamber experiments was markedly dampened 24 h after transfer to continuous light or dark conditions. CssPLA<sub>2</sub>
α and CsPLA<sub>2</sub>
β expressions were redundantly mediated by blue, green, red and red/far-red light, but blue light was a major factor affecting CssPLA<sub>2</sub>
α and CsPLA<sub>2</sub>
β expression. Total and low molecular weight CsPLA<sub>2</sub>
 enzyme activity closely followed diurnal changes in CssPLA<sub>2</sub>
α transcript expression in leaf blades of seedlings treated with low intensity blue light (24 μmol m<sup>-2</sup>
 s<sup>-1</sup>
). Compared with CssPLA<sub>2</sub>
α basal expression, CsPLA<sub>2</sub>
β expression was at least 10-fold higher. Diurnal fluctuation and light regulation of PLA<sub>2</sub>
 gene expression and enzyme activity in citrus leaf and fruit tissues suggests that accompanying diurnal changes in lipophilic second messengers participate in the regulation of physiological processes associated with phospholipase A<sub>2</sub>
 action.</div>
</front>
</TEI>
<affiliations><list><country><li>États-Unis</li>
</country>
</list>
<tree><country name="États-Unis"><noRegion><name sortKey="Liao, Hui Ling" sort="Liao, Hui Ling" uniqKey="Liao H" first="Hui-Ling" last="Liao">Hui-Ling Liao</name>
</noRegion>
<name sortKey="Burns, Jacqueline K" sort="Burns, Jacqueline K" uniqKey="Burns J" first="Jacqueline K." last="Burns">Jacqueline K. Burns</name>
</country>
</tree>
</affiliations>
</record>

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Light controls phospholipase A2α and β gene expression in Citrus sinensis

Light controls phospholipase A2α and β gene expression in Citrus sinensis

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri