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Novel Insights into the Organization of Laticifer Cells: A Cell Comprising a Unified Whole System.
- Source :
-
Plant physiology [Plant Physiol] 2016 Oct; Vol. 172 (2), pp. 1032-1044. Date of Electronic Publication: 2016 Jul 28. - Publication Year :
- 2016
-
Abstract
- Laticifer cells are specialized plant cells that synthesize and accumulate latex. Studies on laticifers have lagged behind in recent years, and data regarding the functional role of laticifers and their fitness benefit still remain elusive. Laticifer differentiation and its impact on plant growth and development also remain to be investigated. Here, cellular, molecular, and genetic tools were developed to examine the distribution, differentiation, ontogeny, and other characteristic features, as well as the potential developmental role of laticifer cells in the latex-bearing plant Euphorbia lathyris. The organization of the laticiferous system within the E. lathyris plant body is reported, emerging as a single elongated and branched coenocytic cell, constituting the largest cell type existing in plants. We also report the ontogeny and organization of laticifer cells in the embryo and the identification of a laticifer-associated gene expression pattern. Moreover, the identification of laticifer- and latex-deficient mutants (pil mutants) allowed for the identification of distinct loci regulating laticifer differentiation, growth, and metabolic activity. Additionally, pil mutants revealed that laticifer cells appear nonessential for plant growth and development, thus pointing toward their importance, instead, for specific ecophysiological adaptations of latex-bearing plants in natural environments.<br /> (© 2016 American Society of Plant Biologists. All Rights Reserved.)
- Subjects :
- Cell Lineage genetics
Cotyledon cytology
Cotyledon genetics
Cotyledon metabolism
Euphorbia cytology
Euphorbia metabolism
Gene Expression Profiling methods
Latex analysis
Microscopy, Electron, Scanning
Mutation
Plant Leaves cytology
Plant Leaves genetics
Plant Leaves metabolism
Plant Proteins metabolism
Plant Stems cytology
Plant Stems genetics
Plant Stems metabolism
Reverse Transcriptase Polymerase Chain Reaction
Seedlings cytology
Seedlings genetics
Seedlings metabolism
Seeds cytology
Seeds genetics
Seeds metabolism
Terpenes analysis
Terpenes metabolism
Euphorbia genetics
Gene Expression Regulation, Plant
Latex biosynthesis
Plant Proteins genetics
Subjects
Details
- Language :
- English
- ISSN :
- 1532-2548
- Volume :
- 172
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Plant physiology
- Publication Type :
- Academic Journal
- Accession number :
- 27468995
- Full Text :
- https://doi.org/10.1104/pp.16.00954