Abstract
Amitrole (3-amino-s-triazole), dichlormate (3,4-dichlorobenzyl methylcarbamate), and pyriclor (2,3,5-trichloro-4-pyridinol) inhibited normal carotenogenesis in etiolated wheat (Triticum aestivum L. var. Coker 65-20) seedlings. Carotenoid precursors accumulated in treated plants. In dichlormate-treated plants, zeta-carotene accumulated, whereas phytofluene, phytoene, and zeta-carotene accumulated in amitrole- and pyriclor-treated plants. None of the herbicides interfered with protochlorophyllide synthesis or its conversion to chlorophyllide when etiolated plants were illuminated. Chlorophyll accumulated in treated plants exposed to light at 60 foot candles, but was unstable and partially destroyed by illumination at 4000 foot candles. These data suggest that the phytotoxicity of amitrole, pyriclor, and dichlormate is due to inhibition of the synthesis of carotenoids and to the consequent photodestruction of chlorophyll and chloroplast disruption.
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Claims 10
Claim · model-written summary
Amitrole inhibited normal carotenogenesis in etiolated wheat seedlings.
- Taxon
- wheat
Triticum aestivume0 - Material
- Coker 65-20e0
- Treatment
- Amitrolee0
- Outcome
- normal carotenogenesise0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Amitrole (3-amino-s-triazole), dichlormate (3,4-dichlorobenzyl methylcarbamate), and pyriclor (2,3,5-trichloro-4-pyridinol) inhibited normal carotenogenesis in etiolated wheat (Triticum aestivum L. var. Coker 65-20) seedlings.”
Claim · model-written summary
Dichlormate inhibited normal carotenogenesis in etiolated wheat seedlings.
- Taxon
- wheat
Triticum aestivume0 - Material
- Coker 65-20e0
- Treatment
- dichlormatee0
- Outcome
- normal carotenogenesise0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Amitrole (3-amino-s-triazole), dichlormate (3,4-dichlorobenzyl methylcarbamate), and pyriclor (2,3,5-trichloro-4-pyridinol) inhibited normal carotenogenesis in etiolated wheat (Triticum aestivum L. var. Coker 65-20) seedlings.”
Claim · model-written summary
Pyriclor inhibited normal carotenogenesis in etiolated wheat seedlings.
- Taxon
- wheat
Triticum aestivume0 - Material
- Coker 65-20e0
- Treatment
- pyriclore0
- Outcome
- normal carotenogenesise0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Amitrole (3-amino-s-triazole), dichlormate (3,4-dichlorobenzyl methylcarbamate), and pyriclor (2,3,5-trichloro-4-pyridinol) inhibited normal carotenogenesis in etiolated wheat (Triticum aestivum L. var. Coker 65-20) seedlings.”
Claim · model-written summary
Zeta-carotene accumulated under dichlormate.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- dichlormatee0
- Outcome
- zeta-carotene accumulatede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“In dichlormate-treated plants, zeta-carotene accumulated, whereas phytofluene, phytoene, and zeta-carotene accumulated in amitrole- and pyriclor-treated plants.”
e1“wheat (Triticum aestivum L. var. Coker 65-20) seedlings”
Claim · model-written summary
Phytofluene, phytoene, and zeta-carotene accumulated under amitrole.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- amitrolee0
- Outcome
- phytofluene, phytoene, and zeta-carotene accumulatede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“In dichlormate-treated plants, zeta-carotene accumulated, whereas phytofluene, phytoene, and zeta-carotene accumulated in amitrole- and pyriclor-treated plants.”
e1“wheat (Triticum aestivum L. var. Coker 65-20) seedlings”
Claim · model-written summary
Phytofluene, phytoene, and zeta-carotene accumulated under pyriclor.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- pyriclore0
- Outcome
- phytofluene, phytoene, and zeta-carotene accumulatede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“In dichlormate-treated plants, zeta-carotene accumulated, whereas phytofluene, phytoene, and zeta-carotene accumulated in amitrole- and pyriclor-treated plants.”
e1“wheat (Triticum aestivum L. var. Coker 65-20) seedlings”
Claim · model-written summary
The three herbicides did not interfere with protochlorophyllide synthesis or conversion to chlorophyllide.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- herbicidese0
- Outcome
- protochlorophyllide synthesis or its conversion to chlorophyllidee0
- Direction
- no_changeinferrede0
- Qualifier
- when etiolated plants were illuminatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“None of the herbicides interfered with protochlorophyllide synthesis or its conversion to chlorophyllide when etiolated plants were illuminated.”
e1“wheat (Triticum aestivum L. var. Coker 65-20) seedlings”
Claim · model-written summary
Chlorophyll accumulated in treated plants at 60 foot candles.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- light at 60 foot candlese0
- Outcome
- Chlorophyll accumulatede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Chlorophyll accumulated in treated plants exposed to light at 60 foot candles, but was unstable and partially destroyed by illumination at 4000 foot candles.”
e1“wheat (Triticum aestivum L. var. Coker 65-20) seedlings”
Claim · model-written summary
Chlorophyll was partly destroyed at 4000 foot candles.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- illumination at 4000 foot candlese0
- Outcome
- Chlorophylle0
- Direction
- partially destroyede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Chlorophyll accumulated in treated plants exposed to light at 60 foot candles, but was unstable and partially destroyed by illumination at 4000 foot candles.”
e1“wheat (Triticum aestivum L. var. Coker 65-20) seedlings”
Claim · model-written summary
Authors attributed phytotoxicity to carotenoid inhibition and subsequent chlorophyll photodestruction and chloroplast disruption.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- amitrole, pyriclor, and dichlormatee0
- Outcome
- phytotoxicitye0
- Qualifier
- inhibition of the synthesis of carotenoids and to the consequent photodestruction of chlorophyll and chloroplast disruptione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“These data suggest that the phytotoxicity of amitrole, pyriclor, and dichlormate is due to inhibition of the synthesis of carotenoids and to the consequent photodestruction of chlorophyll and chloroplast disruption.”
e1“wheat (Triticum aestivum L. var. Coker 65-20) seedlings”
The same questions in other papers
light · physiology: pigments · Triticum aestivum (wheat)Results differ
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5 papers in the same direction as this paper · 16 in the opposite direction
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See all 22 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.