Development, structure and evolutionary significance of seed appendages in Salix matsudana (Salicaceae).
Identifieur interne : 000F62 ( Main/Exploration ); précédent : 000F61; suivant : 000F63Development, structure and evolutionary significance of seed appendages in Salix matsudana (Salicaceae).
Auteurs : Jianxia Li [République populaire de Chine] ; Xiaofei Xia [République populaire de Chine] ; Shenjian Xu [République populaire de Chine] ; Jiayue Wu [République populaire de Chine] ; Linlin Peng [République populaire de Chine] ; Liangcheng Zhao [République populaire de Chine]Source :
- PloS one [ 1932-6203 ] ; 2018.
Descripteurs français
- KwdFr :
- MESH :
- anatomie et histologie : Graines, Salix.
- croissance et développement : Graines, Salix.
- ultrastructure : Graines, Microscopie électronique à balayage, Salix, Évolution biologique.
English descriptors
- KwdEn :
- MESH :
- anatomy & histology : Salix, Seeds.
- growth & development : Salix, Seeds.
- ultrastructure : Salix, Seeds.
- Biological Evolution, Microscopy, Electron, Scanning.
Abstract
The seeds of Salix and Populus (Salicaceae) are characterized by having numerous long hairs which loosely accompanying the seeds and a small annular appendage which surrounding the base of the seed along with tufted hairs. In this study, the complete development and detailed structure of the hairs and annular appendage in Salix matsudana were investigated using standard techniques for plant anatomy and histochemistry. The results show that the hairs originate successively from the single epidermal cells of the placenta (in megaspore mother cell phase) and funiculus (in eight-nucleate phase), and that their development consists of a progressive increase in cell size and an absence of cell division. The annular appendage is initiated from four to five rows of cells at the distal end of the funiculus in octant proembryo phase and its development is characterized by reactivated meristematic activity and a size increase of these cells. The initiation and development of the hairs are irrelevant to ovule development but fertilization and a developed embryo is necessary for the annular appendage to occur. Considering the reliable fossils, we inferred that the feature of seeds surrounded by long hairs is an ancestral character, and that the detachment of hairs from the funiculus and the occurrence of an annular appendage with tufts of hairs may be the more derived states for seed dispersal in Salix and Populus.
DOI: 10.1371/journal.pone.0203061
PubMed: 30180181
PubMed Central: PMC6122828
Affiliations:
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de Chine</country><wicri:regionArea>Lab of Systematic Evolution and Biogeography of Woody Plants, College of Nature Conservation, Beijing Forestry University, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Xia, Xiaofei" sort="Xia, Xiaofei" uniqKey="Xia X" first="Xiaofei" last="Xia">Xiaofei Xia</name><affiliation wicri:level="3"><nlm:affiliation>Beijing Museum of Nature History, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Beijing Museum of Nature History, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Xu, Shenjian" sort="Xu, Shenjian" uniqKey="Xu S" first="Shenjian" last="Xu">Shenjian Xu</name><affiliation wicri:level="3"><nlm:affiliation>Lab of Systematic Evolution and Biogeography of Woody Plants, College of Nature Conservation, Beijing Forestry University, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Lab of Systematic Evolution and Biogeography of Woody Plants, College of Nature Conservation, Beijing Forestry University, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Wu, Jiayue" sort="Wu, Jiayue" uniqKey="Wu J" first="Jiayue" last="Wu">Jiayue Wu</name><affiliation wicri:level="3"><nlm:affiliation>Lab of Systematic Evolution and Biogeography of Woody Plants, College of Nature Conservation, Beijing Forestry University, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Lab of Systematic Evolution and Biogeography of Woody Plants, College of Nature Conservation, Beijing Forestry University, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Peng, Linlin" sort="Peng, Linlin" uniqKey="Peng L" first="Linlin" last="Peng">Linlin Peng</name><affiliation wicri:level="3"><nlm:affiliation>Lab of Systematic Evolution and Biogeography of Woody Plants, College of Nature Conservation, Beijing Forestry University, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Lab of Systematic Evolution and Biogeography of Woody Plants, College of Nature Conservation, Beijing Forestry University, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Zhao, Liangcheng" sort="Zhao, Liangcheng" uniqKey="Zhao L" first="Liangcheng" last="Zhao">Liangcheng Zhao</name><affiliation wicri:level="3"><nlm:affiliation>Lab of Systematic Evolution and Biogeography of Woody Plants, College of Nature Conservation, Beijing Forestry University, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Lab of Systematic Evolution and Biogeography of Woody Plants, College of Nature Conservation, Beijing Forestry University, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author></analytic><series><title level="j">PloS one</title><idno type="eISSN">1932-6203</idno><imprint><date when="2018" type="published">2018</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biological Evolution (MeSH)</term><term>Microscopy, Electron, Scanning (MeSH)</term><term>Salix (anatomy & histology)</term><term>Salix (growth & development)</term><term>Salix (ultrastructure)</term><term>Seeds (anatomy & histology)</term><term>Seeds (growth & development)</term><term>Seeds (ultrastructure)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Graines (anatomie et histologie)</term><term>Graines (croissance et développement)</term><term>Graines (ultrastructure)</term><term>Microscopie électronique à balayage (MeSH)</term><term>Salix (anatomie et histologie)</term><term>Salix (croissance et développement)</term><term>Salix (ultrastructure)</term><term>Évolution biologique (MeSH)</term></keywords><keywords scheme="MESH" qualifier="anatomie et histologie" xml:lang="fr"><term>Graines</term><term>Salix</term></keywords><keywords scheme="MESH" qualifier="anatomy & histology" xml:lang="en"><term>Salix</term><term>Seeds</term></keywords><keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr"><term>Graines</term><term>Salix</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Salix</term><term>Seeds</term></keywords><keywords scheme="MESH" qualifier="ultrastructure" xml:lang="en"><term>Salix</term><term>Seeds</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Biological Evolution</term><term>Microscopy, Electron, Scanning</term></keywords><keywords scheme="MESH" qualifier="ultrastructure" xml:lang="fr"><term>Graines</term><term>Microscopie électronique à balayage</term><term>Salix</term><term>Évolution biologique</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The seeds of Salix and Populus (Salicaceae) are characterized by having numerous long hairs which loosely accompanying the seeds and a small annular appendage which surrounding the base of the seed along with tufted hairs. In this study, the complete development and detailed structure of the hairs and annular appendage in Salix matsudana were investigated using standard techniques for plant anatomy and histochemistry. The results show that the hairs originate successively from the single epidermal cells of the placenta (in megaspore mother cell phase) and funiculus (in eight-nucleate phase), and that their development consists of a progressive increase in cell size and an absence of cell division. The annular appendage is initiated from four to five rows of cells at the distal end of the funiculus in octant proembryo phase and its development is characterized by reactivated meristematic activity and a size increase of these cells. The initiation and development of the hairs are irrelevant to ovule development but fertilization and a developed embryo is necessary for the annular appendage to occur. Considering the reliable fossils, we inferred that the feature of seeds surrounded by long hairs is an ancestral character, and that the detachment of hairs from the funiculus and the occurrence of an annular appendage with tufts of hairs may be the more derived states for seed dispersal in Salix and Populus.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">30180181</PMID><DateCompleted><Year>2019</Year><Month>02</Month><Day>21</Day></DateCompleted><DateRevised><Year>2019</Year><Month>02</Month><Day>21</Day></DateRevised><Article PubModel="Electronic-eCollection"><Journal><ISSN IssnType="Electronic">1932-6203</ISSN><JournalIssue CitedMedium="Internet"><Volume>13</Volume><Issue>9</Issue><PubDate><Year>2018</Year></PubDate></JournalIssue><Title>PloS one</Title><ISOAbbreviation>PLoS One</ISOAbbreviation></Journal><ArticleTitle>Development, structure and evolutionary significance of seed appendages in Salix matsudana (Salicaceae).</ArticleTitle><Pagination><MedlinePgn>e0203061</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1371/journal.pone.0203061</ELocationID><Abstract><AbstractText>The seeds of Salix and Populus (Salicaceae) are characterized by having numerous long hairs which loosely accompanying the seeds and a small annular appendage which surrounding the base of the seed along with tufted hairs. In this study, the complete development and detailed structure of the hairs and annular appendage in Salix matsudana were investigated using standard techniques for plant anatomy and histochemistry. The results show that the hairs originate successively from the single epidermal cells of the placenta (in megaspore mother cell phase) and funiculus (in eight-nucleate phase), and that their development consists of a progressive increase in cell size and an absence of cell division. The annular appendage is initiated from four to five rows of cells at the distal end of the funiculus in octant proembryo phase and its development is characterized by reactivated meristematic activity and a size increase of these cells. The initiation and development of the hairs are irrelevant to ovule development but fertilization and a developed embryo is necessary for the annular appendage to occur. Considering the reliable fossils, we inferred that the feature of seeds surrounded by long hairs is an ancestral character, and that the detachment of hairs from the funiculus and the occurrence of an annular appendage with tufts of hairs may be the more derived states for seed dispersal in Salix and Populus.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Li</LastName><ForeName>Jianxia</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>Lab of Systematic Evolution and Biogeography of Woody Plants, College of Nature Conservation, Beijing Forestry University, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Xia</LastName><ForeName>Xiaofei</ForeName><Initials>X</Initials><AffiliationInfo><Affiliation>Beijing Museum of Nature History, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Xu</LastName><ForeName>Shenjian</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Lab of Systematic Evolution and Biogeography of Woody Plants, College of Nature Conservation, Beijing Forestry University, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Wu</LastName><ForeName>Jiayue</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>Lab of Systematic Evolution and Biogeography of Woody Plants, College of Nature Conservation, Beijing Forestry University, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Peng</LastName><ForeName>Linlin</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>Lab of Systematic Evolution and Biogeography of Woody Plants, College of Nature Conservation, Beijing Forestry University, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Zhao</LastName><ForeName>Liangcheng</ForeName><Initials>L</Initials><Identifier Source="ORCID">0000-0002-0046-3393</Identifier><AffiliationInfo><Affiliation>Lab of Systematic Evolution and Biogeography of Woody Plants, College of Nature Conservation, Beijing Forestry University, Beijing, China.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2018</Year><Month>09</Month><Day>04</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>PLoS One</MedlineTA><NlmUniqueID>101285081</NlmUniqueID><ISSNLinking>1932-6203</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D005075" MajorTopicYN="N">Biological Evolution</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008855" MajorTopicYN="N">Microscopy, Electron, Scanning</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D032108" MajorTopicYN="N">Salix</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName><QualifierName UI="Q000648" MajorTopicYN="N">ultrastructure</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012639" MajorTopicYN="N">Seeds</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName><QualifierName UI="Q000648" MajorTopicYN="N">ultrastructure</QualifierName></MeshHeading></MeshHeadingList><CoiStatement>The authors have declared that no competing interests exist.</CoiStatement></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2018</Year><Month>02</Month><Day>12</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2018</Year><Month>08</Month><Day>14</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2018</Year><Month>9</Month><Day>5</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2018</Year><Month>9</Month><Day>5</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2019</Year><Month>2</Month><Day>23</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>epublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">30180181</ArticleId><ArticleId IdType="doi">10.1371/journal.pone.0203061</ArticleId><ArticleId IdType="pii">PONE-D-18-04782</ArticleId><ArticleId IdType="pmc">PMC6122828</ArticleId></ArticleIdList><ReferenceList><Reference><Citation>Am J Bot. 2003 Sep;90(9):1389-99</Citation><ArticleIdList><ArticleId IdType="pubmed">21659238</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed><affiliations><list><country><li>République populaire de Chine</li></country><settlement><li>Pékin</li></settlement></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Li, Jianxia" sort="Li, Jianxia" uniqKey="Li J" first="Jianxia" last="Li">Jianxia Li</name></noRegion><name sortKey="Peng, Linlin" sort="Peng, Linlin" uniqKey="Peng L" first="Linlin" last="Peng">Linlin Peng</name><name sortKey="Wu, Jiayue" sort="Wu, Jiayue" uniqKey="Wu J" first="Jiayue" last="Wu">Jiayue Wu</name><name sortKey="Xia, Xiaofei" sort="Xia, Xiaofei" uniqKey="Xia X" first="Xiaofei" last="Xia">Xiaofei Xia</name><name sortKey="Xu, Shenjian" sort="Xu, Shenjian" uniqKey="Xu S" first="Shenjian" last="Xu">Shenjian Xu</name><name sortKey="Zhao, Liangcheng" sort="Zhao, Liangcheng" uniqKey="Zhao L" first="Liangcheng" last="Zhao">Liangcheng 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