Abstract
Abstract The use of biostimulants to enhance crop productivity is beginning to be adopted into mainstream agricultural practice. There is an emerging consensus on the critical role that low-cost and scalable chitosan oligosaccharide production systems can play in meeting the demands of this “greener” approach in agriculture. The objective of our research was to produce chitosan oligosaccharides (CHOS) mixtures that can work as plant biostimulants using cost effective enzymes. Commercial chitosans with a consistent formulation and available in bulk were used in the study. Chitosans were characterized in terms of degree of N-acetylation (pH-metric titration) and molecular weight (Ubbelohde viscometer). The yield of the CHOS were determined along with their physicochemical characteristics. The biological activity of the different CHOS mixtures were evaluated for efficacy against a fungal pathogen ( F. oxysporum ) in the susceptible tomato cultivar ‘Moneymaker’. The performance of some CHOS resulted in significant enhancements in a number of plant health indicators such as increased biomass, disease control and induction of ISR markers. Finally, the optimal CHOS preparation in terms of plant bioactivity was scaled up and validated by a preliminary field trial with the industrial tomato cultivar ‘H9661’. The effectiveness of this treatment on crop productivity was consistent with the results observed in the lab and similar to other commercial plant biostimulants.
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Claims 5
Claim · model-written summary
Some CHOS mixtures significantly increased tomato biomass.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- CHOSe0
- Outcome
- biomasse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The performance of some CHOS resulted in significant enhancements in a number of plant health indicators such as increased biomass, disease control and induction of ISR markers”
t0“susceptible tomato cultivar”
Claim · model-written summary
Some CHOS mixtures significantly improved disease control in tomato.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- CHOSe0
- Interactor
- F. oxysporumt0pathogen
- Outcome
- disease controle0
- Direction
- enhancementse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The performance of some CHOS resulted in significant enhancements in a number of plant health indicators such as increased biomass, disease control and induction of ISR markers”
t0“F. oxysporum ) in the susceptible tomato cultivar”
Claim · model-written summary
Some CHOS mixtures significantly induced ISR markers in tomato.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- CHOSe0
- Outcome
- ISR markerse0
- Direction
- inductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The performance of some CHOS resulted in significant enhancements in a number of plant health indicators such as increased biomass, disease control and induction of ISR markers”
t0“susceptible tomato cultivar”
Claim · model-written summary
The optimal CHOS preparation showed field effects on tomato crop productivity consistent with laboratory results.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- H9661t0
- Treatment
- this treatmente0
- Outcome
- crop productivitye0
- Direction
- consistente0
- Comparator
- results observed in the labe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effectiveness of this treatment on crop productivity was consistent with the results observed in the lab and similar to other commercial plant biostimulants”
t0“industrial tomato cultivar ‘H9661’”
Claim · model-written summary
The field CHOS treatment had similar effectiveness on tomato crop productivity to other commercial biostimulants.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- H9661t0
- Treatment
- this treatmente0
- Outcome
- crop productivitye0
- Direction
- similare0
- Comparator
- other commercial plant biostimulantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effectiveness of this treatment on crop productivity was consistent with the results observed in the lab and similar to other commercial plant biostimulants”
t0“industrial tomato cultivar ‘H9661’”
The same questions in other papers
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See all 5 papers →oligosaccharide · growth · Solanum lycopersicum (tomato)Results agree
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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.