Cargando…
Multifunctional fructans and raffinose family oligosaccharides
Fructans and raffinose family oligosaccharides (RFOs) are the two most important classes of water-soluble carbohydrates in plants. Recent progress is summarized on their metabolism (and regulation) and on their functions in plants and in food (prebiotics, antioxidants). Interest has shifted from the...
Autor principal: | |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2013
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3713406/ https://www.ncbi.nlm.nih.gov/pubmed/23882273 http://dx.doi.org/10.3389/fpls.2013.00247 |
_version_ | 1782277196938739712 |
---|---|
author | den Ende, Wim Van |
author_facet | den Ende, Wim Van |
author_sort | den Ende, Wim Van |
collection | PubMed |
description | Fructans and raffinose family oligosaccharides (RFOs) are the two most important classes of water-soluble carbohydrates in plants. Recent progress is summarized on their metabolism (and regulation) and on their functions in plants and in food (prebiotics, antioxidants). Interest has shifted from the classic inulin-type fructans to more complex fructans. Similarly, alternative RFOs were discovered next to the classic RFOs. Considerable progress has been made in the understanding of structure–function relationships among different kinds of plant fructan metabolizing enzymes. This helps to understand their evolution from (invertase) ancestors, and the evolution and role of so-called “defective invertases.” Both fructans and RFOs can act as reserve carbohydrates, membrane stabilizers and stress tolerance mediators. Fructan metabolism can also play a role in osmoregulation (e.g., flower opening) and source–sink relationships. Here, two novel emerging roles are highlighted. First, fructans and RFOs may contribute to overall cellular reactive oxygen species (ROS) homeostasis by specific ROS scavenging processes in the vicinity of organellar membranes (e.g., vacuole, chloroplasts). Second, it is hypothesized that small fructans and RFOs act as phloem-mobile signaling compounds under stress. It is speculated that such underlying antioxidant and oligosaccharide signaling mechanisms contribute to disease prevention in plants as well as in animals and in humans. |
format | Online Article Text |
id | pubmed-3713406 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-37134062013-07-23 Multifunctional fructans and raffinose family oligosaccharides den Ende, Wim Van Front Plant Sci Plant Science Fructans and raffinose family oligosaccharides (RFOs) are the two most important classes of water-soluble carbohydrates in plants. Recent progress is summarized on their metabolism (and regulation) and on their functions in plants and in food (prebiotics, antioxidants). Interest has shifted from the classic inulin-type fructans to more complex fructans. Similarly, alternative RFOs were discovered next to the classic RFOs. Considerable progress has been made in the understanding of structure–function relationships among different kinds of plant fructan metabolizing enzymes. This helps to understand their evolution from (invertase) ancestors, and the evolution and role of so-called “defective invertases.” Both fructans and RFOs can act as reserve carbohydrates, membrane stabilizers and stress tolerance mediators. Fructan metabolism can also play a role in osmoregulation (e.g., flower opening) and source–sink relationships. Here, two novel emerging roles are highlighted. First, fructans and RFOs may contribute to overall cellular reactive oxygen species (ROS) homeostasis by specific ROS scavenging processes in the vicinity of organellar membranes (e.g., vacuole, chloroplasts). Second, it is hypothesized that small fructans and RFOs act as phloem-mobile signaling compounds under stress. It is speculated that such underlying antioxidant and oligosaccharide signaling mechanisms contribute to disease prevention in plants as well as in animals and in humans. Frontiers Media S.A. 2013-07-09 /pmc/articles/PMC3713406/ /pubmed/23882273 http://dx.doi.org/10.3389/fpls.2013.00247 Text en Copyright © Van den Ende. http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc. |
spellingShingle | Plant Science den Ende, Wim Van Multifunctional fructans and raffinose family oligosaccharides |
title | Multifunctional fructans and raffinose family oligosaccharides |
title_full | Multifunctional fructans and raffinose family oligosaccharides |
title_fullStr | Multifunctional fructans and raffinose family oligosaccharides |
title_full_unstemmed | Multifunctional fructans and raffinose family oligosaccharides |
title_short | Multifunctional fructans and raffinose family oligosaccharides |
title_sort | multifunctional fructans and raffinose family oligosaccharides |
topic | Plant Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3713406/ https://www.ncbi.nlm.nih.gov/pubmed/23882273 http://dx.doi.org/10.3389/fpls.2013.00247 |
work_keys_str_mv | AT denendewimvan multifunctionalfructansandraffinosefamilyoligosaccharides |