Abstract
BACKGROUND: To promote sustainable agriculture and healthy food, research that contributes towards a new generation of eco-friendly phytosanitary compounds is increasingly encouraged. The plant hormone salicylic acid (SA) is known for its ability to induce resistance in plants against a wide range of pathogens, whereas pyroglutamic acid (PGA), a constrained analogue of γ-aminobutyric acid, has never been studied in the context of plant protection. RESULTS: The present study investigated for the first time the protection efficacy of SA and PGA and five new conjugated derivatives against Zymoseptoria tritici, the main pathogen in wheat crops. SA and four derivatives showed significant disease severity reductions in planta (up to 49%). In vitro assays revealed that some molecules, including SA, displayed a small direct antifungal activity, whereas others, such as PGA, showed no effect. This finding suggests that, especially for molecules without any direct activity, the mode of action relies mainly on the induction of plant resistance. CONCLUSION: Further investigations are needed to identify the defence pathways involved in plant resistance mechanisms elicited or primed by the molecules. The manufacture of these products was easily achieved on a scale of tens of grams of raw materials, and is easily scalable. The synthetic pathway is simple, short and inexpensive. For all of these reasons, the production of the target molecules is attractive for producers, whereas the prospect of a generation of non-polluting compounds with lasting efficiency against Z. tritici in wheat comes at a key moment for the sustainability of agriculture. © 2018 Society of Chemical Industry.
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Claims 5
Claim · model-written summary
Salicylic acid and four conjugated derivatives reduced Zymoseptoria tritici disease severity in planta by up to 49%.
- Taxon
- bread wheat
Triticum aestivumt0 - Treatment
- SA and four derivativese0
- Interactor
- Zymoseptoria tritici
Zymoseptoria triticit0pathogen - Outcome
- disease severitye0
- Direction
- reductionse0
- Value
- up to 49%e0
- Setting
- in plantae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“New salicylic acid and pyroglutamic acid conjugated derivatives confer protection to bread wheat against Zymoseptoria tritici”
e0“SA and four derivatives showed significant disease severity reductions in planta (up to 49%)”
Claim · model-written summary
Salicylic acid showed a small direct antifungal activity in vitro.
- Taxon
- bread wheatTriticum aestivumt0
- Compound
- SAe1
- Outcome
- direct antifungal activitye1
- Qualifier
- smalle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“New salicylic acid and pyroglutamic acid conjugated derivatives confer protection to bread wheat against Zymoseptoria tritici”
e1“In vitro assays revealed that some molecules, including SA, displayed a small direct antifungal activity”
Claim · model-written summary
Pyroglutamic acid showed no direct antifungal effect in vitro.
- Taxon
- bread wheatTriticum aestivumt0
- Compound
- PGAe2
- Outcome
- direct antifungal activitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“New salicylic acid and pyroglutamic acid conjugated derivatives confer protection to bread wheat against Zymoseptoria tritici”
e1“In vitro assays revealed that some molecules, including SA, displayed a small direct antifungal activity”
e2“others, such as PGA, showed no effect”
Claim · model-written summary
For molecules without direct activity, the mode of action is mainly the induction of plant resistance.
- Taxon
- bread wheatTriticum aestivumt0
- Outcome
- mode of actione3
- Qualifier
- induction of plant resistancee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“New salicylic acid and pyroglutamic acid conjugated derivatives confer protection to bread wheat against Zymoseptoria tritici”
e3“the mode of action relies mainly on the induction of plant resistance”
Claim · model-written summary
The manufacture of these products was easily achieved on a scale of tens of grams of raw materials and is easily scalable.
Verbatim
e4“The manufacture of these products was easily achieved on a scale of tens of grams of raw materials, and is easily scalable”
The same questions in other papers
salicylic acid · Zymoseptoria tritici · Triticum aestivum (wheat)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.