Abstract
Solubility of growth regulators is essential for their use in agriculture. Four new cytokinin salts─6-benzylaminopurine mesylate (1), 6-(2-hydroxybenzylamino)purine mesylate (2), 6-(3-hydroxybenzylamino)purine mesylate (3), and 6-(3-methoxybenzylamino)purine mesylate (4)─were synthesized, and their crystal structures were determined to clarify structural influence on water solubility. The mesylates were several orders of magnitude more water-soluble than the parent CKs. The new salts significantly reduced chlorophyll degradation and impairment of photosystem II functionality in barley leaf segments undergoing artificial senescence and had pronounced effects on the leaves’ endogenous CK pools, maintaining high concentrations of functional metabolites for several days, unlike canonical CKs. A foliar treatment with 1 and 3 increased the harvest yield of spring barley by up to 8% when compared to treatment with the parent CKs while also increasing the number of productive tillers. This effect was attributed to the higher bioavailability of the mesylate salts and the avoidance of dimethyl sulfoxide exposure.
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Claims 6
Claim · model-written summary
New salts reduced chlorophyll degradation in senescing barley leaves.
- Taxon
- barley
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Hordeum vulgaree0 - Organ / stage
- leaf segmentse0
- Treatment
- new saltse0
- Outcome
- chlorophyll degradatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The new salts significantly reduced chlorophyll degradation and impairment of photosystem II functionality in barley leaf segments undergoing artificial senescence”
Claim · model-written summary
New salts reduced impairment of photosystem II in senescing barley leaves.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- new saltse0
- Outcome
- impairment of photosystem II functionalitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The new salts significantly reduced chlorophyll degradation and impairment of photosystem II functionality in barley leaf segments undergoing artificial senescence”
Claim · model-written summary
New salts maintained high functional cytokinin metabolites for several days unlike canonical cytokinins.
- Taxon
- BarleyHordeum vulgaret0
- Outcome
- concentrations of functional metabolitese0
- Direction
- highe0
- Comparator
- canonical CKse0
Not reportedTreatmentValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maintaining high concentrations of functional metabolites for several days, unlike canonical CKs”
t0“Barley”
Claim · model-written summary
Foliar treatment with salt 1 increased spring barley harvest yield by up to 8% relative to parent cytokinins.
- Taxon
- spring barleyHordeum vulgaree0
- Treatment
- 1e0
- Outcome
- harvest yielde0
- Direction
- increasede0
- Value
- up to 8%e0
- Comparator
- treatment with the parent CKse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A foliar treatment with 1 and 3 increased the harvest yield of spring barley by up to 8% when compared to treatment with the parent CKs”
Claim · model-written summary
Foliar treatment with salt 3 increased spring barley harvest yield by up to 8% relative to parent cytokinins.
- Taxon
- spring barleyHordeum vulgaree0
- Treatment
- 3e0
- Outcome
- harvest yielde0
- Direction
- increasede0
- Value
- up to 8%e0
- Comparator
- treatment with the parent CKse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A foliar treatment with 1 and 3 increased the harvest yield of spring barley by up to 8% when compared to treatment with the parent CKs”
Claim · model-written summary
Foliar treatments increased productive tiller number.
- Taxon
- spring barleyHordeum vulgaree0
- Treatment
- 1 and 3e0
- Outcome
- number of productive tillerse0
- Direction
- increasinge0
- Comparator
- treatment with the parent CKse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A foliar treatment with 1 and 3 increased the harvest yield of spring barley by up to 8% when compared to treatment with the parent CKs while also increasing the number of productive tillers”
The same questions in other papers
salinity · physiology: pigments · Hordeum vulgare (barley)Positive and negative results
1 paper in the same direction as this paper · 16 in the opposite direction
- no effect
- negative
- negative
14 papers more in this group
See all 18 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.