The mixotrophic nature of photosynthetic plants

Schmidt, Susanne, Raven, John A. and Paungfoo-Lonhienne, Chanyarat (2013) The mixotrophic nature of photosynthetic plants. Functional Plant Biology, 40 5: 425-438. doi:10.1071/FP13061


Author Schmidt, Susanne
Raven, John A.
Paungfoo-Lonhienne, Chanyarat
Title The mixotrophic nature of photosynthetic plants
Journal name Functional Plant Biology   Check publisher's open access policy
ISSN 1445-4408
1445-4416
Publication date 2013
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1071/FP13061
Volume 40
Issue 5
Start page 425
End page 438
Total pages 14
Place of publication Australia
Publisher C S I R O Publishing
Collection year 2014
Language eng
Formatted abstract
Plants typically have photosynthetically competent green shoots. To complement resources derived from the atmospheric environment, plants also acquire essential elements from soil. Inorganic ions and molecules are generally considered to be the sources of soil-derived nutrients, and plants tested in this respect can grow with only inorganic nutrients and so can live as autotrophs. However, mycorrhizal symbionts are known to access nutrients from organic matter. Furthermore, specialist lineages of terrestrial photosynthetically competent plants are mixotrophic, including species that obtain organic nutrition from animal prey (carnivores), fungal partners (mycoheterotrophs) or plant hosts (hemi-parasites). Although mixotrophy is deemed the exception in terrestrial plants, it is a common mode of nutrition in aquatic algae. There is mounting evidence that non-specialist plants acquire organic compounds as sources of nutrients, taking up and metabolising a range of organic monomers, oligomers, polymers and even microbes as sources of nitrogen and phosphorus. Plasma-membrane located transporter proteins facilitate the uptake of low-molecular mass organic compounds, endo- and phagocytosis may enable the acquisition of larger compounds, although this has not been confirmed. Identifying the mechanisms involved in the acquisition of organic nutrients will provide understanding of the ecological significance of mixotrophy. Here, we discuss mixotrophy in the context of nitrogen and phosphorus nutrition drawing parallels between algae and plants.
Keyword Endocytosis
Mixotrophy
Organic nutrients
Plant nutrition
Root hairs
Arabidopsis-thaliana
Cluster roots
Amino-acids
Organic nitrogen
White lupin
Phosphorus availability
Vesicle trafficking
Carnivorous plants
Barley genotypes
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: School of Agriculture and Food Sciences
Official 2014 Collection
 
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