Evolution of a CAM anatomy predates the origins of Crassulacean acid metabolism in the Agavoideae (Asparagaceae). (Record no. 52781)

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control field 20250625162416.0
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Transcribing agency CICY
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Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-18635
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Title Evolution of a CAM anatomy predates the origins of Crassulacean acid metabolism in the Agavoideae (Asparagaceae).
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Volume/sequential designation Molecular phylogenetics and evolution, 105, p.102-113., 2016
520 3# - SUMMARY, ETC.
Summary, etc. Crassulacean acid metabolism (CAM)is a modified form of photosynthesis that has arisen independently at least 35 times in flowering plants. The occurrence of CAM is often correlated with shifts to arid, semiarid, or epiphytic habits, as well as transitions in leaf morphology (e.g. increased leaf thickness)and anatomy (e.g. increased cell size and packing). We assess shifts between C3 and CAM photosynthesis in the subfamily Agavoideae (Asparagaceae)through phylogenetic analysis of targeted loci captured from the nuclear and chloroplast genomes of over 60 species. Carbon isotope data was used as a proxy for mode of photosynthesis in extant species and ancestral states were estimated on the phylogeny. Ancestral character state mapping suggests three independent origins of CAM in the Agavoideae. CAM species differ from C3 species in climate space and are found to have thicker leaves with densely packed cells. C3 ancestors of CAM species show a predisposition toward CAM-like morphology. Leaf characteristics in the ancestral C3 species may have enabled the repeated evolution of CAM in the Agavoideae subfamily. Anatomical changes, including a tendency toward 3D venation, may have initially arisen in C3 ancestors in response to aridity as a way to increase leaf succulence for water storage.
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Topical term or geographic name entry element CAM
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element CHARACTER EVOLUTION
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Topical term or geographic name entry element LEAF ANATOMY
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element PHOTOSYNTHESIS
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Topical term or geographic name entry element PHYLOGENOMICS
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Topical term or geographic name entry element SEQUENCE CAPTURE
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Heyduk, K.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Mckain, M. R.
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Personal name Lalani, F.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Leebens-Mack, J.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1us4MVpV5NmxW4GXFClCZ5Ltu7adXdE81/view?usp=drivesdk">https://drive.google.com/file/d/1us4MVpV5NmxW4GXFClCZ5Ltu7adXdE81/view?usp=drivesdk</a>
Public note Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-18635 25.06.2025 25.06.2025 Documentos solicitados