Abstract
Abstract Based on a condensation reaction, a chitosan-derivative-bearing amino pyridine group was prepared and subsequently followed by coordination with cupric ions, zinc ions and nickel ions to synthesize chitosan metal complexes. The calculations using the density functional theory (DFT) show that the copper ions and nickel ions underwent dsp 2 hybridization, the zinc ions underwent sp 3 hybridization, and they all formed a coordination bond with the carbon atom in the p-π conjugate group. The antifungal properties of O-CSPX-M against Phytophthora capsici (P. capsici) , Verticillium alboatrum (V. alboatrum) , Botrytis cinerea (B. cinerea) and Rhizoctonia solani (R. solani) were also assayed. Apparently, chitosan metal complexes showed enhanced antifungal activity against four fungi at the tested concentrations compared to that of chitosan. It was shown that Cu complexes can inhibit the growth of P. capsici 100%, and Ni complexes can inhibit the growth of B. cinerea 77.1% at a concentration of 0.4 mg/mL and 0.2 mg/mL, respectively. The pot experiment also verified the result. In addition, the phytotoxicity experiment showed that O-CSPX-M had no obvious toxicity on wheat leaves. This kind of complexes may represent as an attractive direction for chemical modifications of metal fungicides.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 4
Claim · model-written summary
Chitosan metal complexes had enhanced antifungal activity against four fungi compared with chitosan.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- chitosan metal complexese0
- Outcome
- antifungal activity against four fungie0
- Direction
- enhancede0
- Comparator
- chitosane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chitosan metal complexes showed enhanced antifungal activity against four fungi at the tested concentrations compared to that of chitosan”
t0“wheat leaves”
Claim · model-written summary
Cu complexes inhibited P. capsici growth by 100%.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Cu complexese0
- Interactor
- P. capsici
.jpg?width=60)
Phytophthora capsicie0pathogent1 - Outcome
- growth of P. capsicie0
- Direction
- inhibite0
- Value
- 100%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Cu complexes can inhibit the growth of P. capsici 100%”
t0“wheat leaves”
t1“Phytophthora capsici (P. capsici)”
Claim · model-written summary
Ni complexes inhibited B. cinerea growth by 77.1%.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Ni complexese0
- Interactor
- B. cinerea
Botrytis cinereae0pathogent1 - Outcome
- growth of B. cinereae0
- Direction
- inhibite0
- Value
- 77.1%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ni complexes can inhibit the growth of B. cinerea 77.1%”
t0“wheat leaves”
t1“Botrytis cinerea (B. cinerea)”
Claim · model-written summary
O-CSPX-M showed no obvious toxicity on wheat leaves.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- leavese0
- Treatment
- O-CSPX-Me0
- Outcome
- toxicity on wheat leavese0
- Direction
- no obvious toxicitye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“O-CSPX-M had no obvious toxicity on wheat leaves”
The same questions in other papers
chitosan · disease · Triticum aestivum (wheat)Results agree
12 papers in the same direction as this paper
- positive
- positive
- positive
9 papers more in this group
See all 13 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.