Transcriptome responses of an ungrafted Phytophthora root rot tolerant avocado (Persea americana) rootstock to flooding and Phytophthora cinnamomi.
Identifieur interne : 000B08 ( Main/Curation ); précédent : 000B07; suivant : 000B09Transcriptome responses of an ungrafted Phytophthora root rot tolerant avocado (Persea americana) rootstock to flooding and Phytophthora cinnamomi.
Auteurs : B J Reeksting [Afrique du Sud] ; N A Olivier [Afrique du Sud] ; N. Van Den Berg [Afrique du Sud]Source :
- BMC plant biology [ 1471-2229 ] ; 2016.
Abstract
BACKGROUND
Avocado (Persea americana Mill.) is a commercially important fruit crop worldwide. A major limitation to production is the oomycete Phytophthora cinnamomi, which causes root rot leading to branch-dieback and tree death. The decline of orchards infected with P. cinnamomi occurs much faster when exposed to flooding, even if flooding is only transient. Flooding is a multifactorial stress compromised of several individual stresses, making breeding and selection for tolerant varieties challenging. With more plantations occurring in marginal areas, with imperfect irrigation and drainage, understanding the response of avocado to these stresses will be important for the industry.
RESULTS
Maintenance of energy production was found to be central in the response to flooding, as seen by up-regulation of transcripts related to glycolysis and induction of transcripts related to ethanolic fermentation. Energy-intensive processes were generally down-regulated, as evidenced by repression of transcripts related to processes such as secondary cell-wall biosynthesis as well as defence-related transcripts. Aquaporins were found to be down-regulated in avocado roots exposed to flooding, indicating reduced water-uptake under these conditions.
CONCLUSIONS
The transcriptomic response of avocado to flooding and P. cinnamomi was investigated utilizing microarray analysis. Differences in the transcriptome caused by the presence of the pathogen were minor compared to transcriptomic perturbations caused by flooding. The transcriptomic response of avocado to flooding reveals a response to flooding that is conserved in several species. This data could provide key information that could be used to improve selection of stress tolerant rootstocks in the avocado industry.
DOI: 10.1186/s12870-016-0893-2
PubMed: 27658453
PubMed Central: PMC5034587
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Van Den Berg</name><affiliation wicri:level="1"><nlm:affiliation>Department of Microbiology and Plant Pathology, University of Pretoria, Pretoria, South Africa. noelani.vdberg@fabi.up.ac.za.</nlm:affiliation><country xml:lang="fr">Afrique du Sud</country><wicri:regionArea>Department of Microbiology and Plant Pathology, University of Pretoria, Pretoria</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:affiliation>Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa. noelani.vdberg@fabi.up.ac.za.</nlm:affiliation><country xml:lang="fr">Afrique du Sud</country><wicri:regionArea>Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria</wicri:regionArea></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2016">2016</date><idno type="RBID">pubmed:27658453</idno><idno type="pmid">27658453</idno><idno type="doi">10.1186/s12870-016-0893-2</idno><idno type="pmc">PMC5034587</idno><idno type="wicri:Area/Main/Corpus">000B08</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">000B08</idno><idno type="wicri:Area/Main/Curation">000B08</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Curation">000B08</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Transcriptome responses of an ungrafted Phytophthora root rot tolerant avocado (Persea americana) rootstock to flooding and Phytophthora cinnamomi.</title><author><name sortKey="Reeksting, B J" sort="Reeksting, B J" uniqKey="Reeksting B" first="B J" last="Reeksting">B J Reeksting</name><affiliation wicri:level="1"><nlm:affiliation>Department of Genetics, University of Pretoria, Pretoria, South Africa.</nlm:affiliation><country xml:lang="fr">Afrique du Sud</country><wicri:regionArea>Department of Genetics, University of Pretoria, Pretoria</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:affiliation>Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa.</nlm:affiliation><country xml:lang="fr">Afrique du Sud</country><wicri:regionArea>Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria</wicri:regionArea></affiliation></author><author><name sortKey="Olivier, N A" sort="Olivier, N A" uniqKey="Olivier N" first="N A" last="Olivier">N A Olivier</name><affiliation wicri:level="1"><nlm:affiliation>Department of Plant Science, University of Pretoria, Pretoria, South Africa.</nlm:affiliation><country xml:lang="fr">Afrique du Sud</country><wicri:regionArea>Department of Plant Science, University of Pretoria, Pretoria</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:affiliation>Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa.</nlm:affiliation><country xml:lang="fr">Afrique du Sud</country><wicri:regionArea>Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria</wicri:regionArea></affiliation></author><author><name sortKey="Van Den Berg, N" sort="Van Den Berg, N" uniqKey="Van Den Berg N" first="N" last="Van Den Berg">N. Van Den Berg</name><affiliation wicri:level="1"><nlm:affiliation>Department of Microbiology and Plant Pathology, University of Pretoria, Pretoria, South Africa. noelani.vdberg@fabi.up.ac.za.</nlm:affiliation><country xml:lang="fr">Afrique du Sud</country><wicri:regionArea>Department of Microbiology and Plant Pathology, University of Pretoria, Pretoria</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:affiliation>Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa. noelani.vdberg@fabi.up.ac.za.</nlm:affiliation><country xml:lang="fr">Afrique du Sud</country><wicri:regionArea>Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria</wicri:regionArea></affiliation></author></analytic><series><title level="j">BMC plant biology</title><idno type="eISSN">1471-2229</idno><imprint><date when="2016" type="published">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p><b>BACKGROUND</b></p><p>Avocado (Persea americana Mill.) is a commercially important fruit crop worldwide. A major limitation to production is the oomycete Phytophthora cinnamomi, which causes root rot leading to branch-dieback and tree death. The decline of orchards infected with P. cinnamomi occurs much faster when exposed to flooding, even if flooding is only transient. Flooding is a multifactorial stress compromised of several individual stresses, making breeding and selection for tolerant varieties challenging. With more plantations occurring in marginal areas, with imperfect irrigation and drainage, understanding the response of avocado to these stresses will be important for the industry.</p></div><div type="abstract" xml:lang="en"><p><b>RESULTS</b></p><p>Maintenance of energy production was found to be central in the response to flooding, as seen by up-regulation of transcripts related to glycolysis and induction of transcripts related to ethanolic fermentation. Energy-intensive processes were generally down-regulated, as evidenced by repression of transcripts related to processes such as secondary cell-wall biosynthesis as well as defence-related transcripts. Aquaporins were found to be down-regulated in avocado roots exposed to flooding, indicating reduced water-uptake under these conditions.</p></div><div type="abstract" xml:lang="en"><p><b>CONCLUSIONS</b></p><p>The transcriptomic response of avocado to flooding and P. cinnamomi was investigated utilizing microarray analysis. Differences in the transcriptome caused by the presence of the pathogen were minor compared to transcriptomic perturbations caused by flooding. The transcriptomic response of avocado to flooding reveals a response to flooding that is conserved in several species. This data could provide key information that could be used to improve selection of stress tolerant rootstocks in the avocado industry.</p></div></front></TEI><pubmed><MedlineCitation Status="Publisher" Owner="NLM"><PMID Version="1">27658453</PMID><DateRevised><Year>2019</Year><Month>11</Month><Day>20</Day></DateRevised><Article PubModel="Electronic"><Journal><ISSN IssnType="Electronic">1471-2229</ISSN><JournalIssue CitedMedium="Internet"><Volume>16</Volume><Issue>1</Issue><PubDate><Year>2016</Year><Month>Sep</Month><Day>22</Day></PubDate></JournalIssue><Title>BMC plant biology</Title><ISOAbbreviation>BMC Plant Biol</ISOAbbreviation></Journal><ArticleTitle>Transcriptome responses of an ungrafted Phytophthora root rot tolerant avocado (Persea americana) rootstock to flooding and Phytophthora cinnamomi.</ArticleTitle><Pagination><MedlinePgn>205</MedlinePgn></Pagination><Abstract><AbstractText Label="BACKGROUND" NlmCategory="BACKGROUND">Avocado (Persea americana Mill.) is a commercially important fruit crop worldwide. A major limitation to production is the oomycete Phytophthora cinnamomi, which causes root rot leading to branch-dieback and tree death. The decline of orchards infected with P. cinnamomi occurs much faster when exposed to flooding, even if flooding is only transient. Flooding is a multifactorial stress compromised of several individual stresses, making breeding and selection for tolerant varieties challenging. With more plantations occurring in marginal areas, with imperfect irrigation and drainage, understanding the response of avocado to these stresses will be important for the industry.</AbstractText><AbstractText Label="RESULTS" NlmCategory="RESULTS">Maintenance of energy production was found to be central in the response to flooding, as seen by up-regulation of transcripts related to glycolysis and induction of transcripts related to ethanolic fermentation. Energy-intensive processes were generally down-regulated, as evidenced by repression of transcripts related to processes such as secondary cell-wall biosynthesis as well as defence-related transcripts. Aquaporins were found to be down-regulated in avocado roots exposed to flooding, indicating reduced water-uptake under these conditions.</AbstractText><AbstractText Label="CONCLUSIONS" NlmCategory="CONCLUSIONS">The transcriptomic response of avocado to flooding and P. cinnamomi was investigated utilizing microarray analysis. Differences in the transcriptome caused by the presence of the pathogen were minor compared to transcriptomic perturbations caused by flooding. The transcriptomic response of avocado to flooding reveals a response to flooding that is conserved in several species. This data could provide key information that could be used to improve selection of stress tolerant rootstocks in the avocado industry.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Reeksting</LastName><ForeName>B J</ForeName><Initials>BJ</Initials><AffiliationInfo><Affiliation>Department of Genetics, University of Pretoria, Pretoria, South Africa.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Olivier</LastName><ForeName>N A</ForeName><Initials>NA</Initials><AffiliationInfo><Affiliation>Department of Plant Science, University of Pretoria, Pretoria, South Africa.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>van den Berg</LastName><ForeName>N</ForeName><Initials>N</Initials><AffiliationInfo><Affiliation>Department of Microbiology and Plant Pathology, University of Pretoria, Pretoria, South Africa. noelani.vdberg@fabi.up.ac.za.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa. noelani.vdberg@fabi.up.ac.za.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2016</Year><Month>09</Month><Day>22</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>BMC Plant Biol</MedlineTA><NlmUniqueID>100967807</NlmUniqueID><ISSNLinking>1471-2229</ISSNLinking></MedlineJournalInfo><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Aquaporins</Keyword><Keyword 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