ArticlePlant physiology1996
Evidence that zeaxanthin is not the photoreceptor for phototropism in maize coleoptiles.
Article in Plant physiology, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed, 30 citations in OpenAlex.
- Phototropism: some history, some puzzles, and a look ahead.Plant physiology · 2014Review
- Phototropism: mechanism and outcomes.The arabidopsis book · 2010Article
- Dissection of the light signal transduction pathways regulating the two early light-induced protein genes in Arabidopsis.Plant physiology · 2001Article
- Arabidopsis contains at least four independent blue-light-activated signal transduction pathways.Plant physiology · 1999Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The photoreceptor that mediates blue-light-induced phototropism in dark-grown seedlings of higher plants has not been identified, although the carotenoid zeaxanthin has recently been proposed as the putative chromophore. In the experiments described in this paper, we analyzed phototropism and a blue-light-induced protein phosphorylation that has been genetically and physiologically implicated in phototropism in wild-type maize (Zea mays L.) seedlings and compared the results with those from seedlings that are either carotenoid deficient through a genetic lesion or have been chemically treated to block carotenoid biosynthesis. The blue-light-dependent phototropism and phosphorylation responses of seedlings deficient in carotenoids are the same as those of seedlings containing normal levels of carotenoids. These results and those in the literature make it unlikely that zeaxanthin or any other carotenoid is the chromophore of the blue-light photoreceptor for phototropism or the blue-light-induced phosphorylation related to phototropism.
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Registered trials
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