Photoreceptor-mediated kin recognition in plants
- PMID: 25264216
- DOI: 10.1111/nph.13040
Photoreceptor-mediated kin recognition in plants
Abstract
Although cooperative interactions among kin have been established in a variety of biological systems, their occurrence in plants remains controversial. Plants of Arabidopsis thaliana were grown in rows of either a single or multiple accessions. Plants recognized kin neighbours and horizontally reoriented leaf growth, a response not observed when plants were grown with nonkin. Plant kin recognition involved the perception of the vertical red/far-red light and blue light profiles. Disruption of the light profiles, mutations at the PHYTOCHROME B, CRYPTOCHROME 1 or 2, or PHOTOTROPIN 1 or 2 photoreceptor genes or mutations at the TRYPTOPHAN AMINOTRANSFERASE OF ARABIDOPSIS1 gene required for auxin (growth hormone) synthesis impaired the response. The leaf-position response increases plant self-shading, decreases mutual shading between neighbours and increases fitness. Light signals from neighbours are known to shape a more competitive plant body. Here we show that photosensory receptors mediate cooperative rather than competitive interactions among kin neighbours by reducing the competition for local pools of resources.
Keywords: competition; cryptochrome; fitness; kin; phototropin; phytochrome; shade avoidance.
© 2014 The Authors. New Phytologist © 2014 New Phytologist Trust.
Comment in
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Shedding light on kin recognition response in plants.New Phytol. 2015 Jan;205(1):4-6. doi: 10.1111/nph.13155. New Phytol. 2015. PMID: 25427216 No abstract available.
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Kin recognition or phenotype matching?New Phytol. 2016 Jan;209(1):13-4. doi: 10.1111/nph.13554. Epub 2015 Sep 14. New Phytol. 2016. PMID: 26365471 No abstract available.
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Kin recognition by self-referent phenotype matching in plants.New Phytol. 2016 Jan;209(1):15-6. doi: 10.1111/nph.13638. Epub 2015 Sep 14. New Phytol. 2016. PMID: 26365686 No abstract available.
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