Abstract
Ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco; EC 4.1.1.39) and Carbonic anhydrase (EC 4.2.1.1) are key enzymes of photosynthesis in plants. Microfungi colonizing leaf surface are known to affect photosynthesis but their influence on chloroplast physiology is not well understood. The present study aimed at possible effect of phylloplane microbes on activity of two key enzymes in chloroplast. The activity of Rubisco and Carbonic anhydrase was estimated in aseptically raised tomato and barley plants treated with metabolites of Fusarium oxysporum and Aspergillus niger which were dominant phylloplane microfungi. The activity of Carbonic anhydrase and Rubisco was significantly enhanced on application of fungal metabolites, either singly or in combination. Both the metabolites could significantly increase the activity of Rubisco and Carbonic anhydrase within 72 h of treatment in both tomato and barley. The effect was more pronounced when the fungal metabolites were sprayed in combination, thereby indicating their cumulative positive effect on the plants. However, the metabolite effect was reduced if the plants were pre-infected with their respective pathogens. The study highlights the critical relationship of phylloplane microflora with functioning of these two chloroplast enzymes in higher plants. The application of these metabolites, either singly or in combination in the host plants demonstrated a positive correlation between rubisco and carbonic anhydrase.
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Claims 5
Claim · model-written summary
Fungal metabolites significantly enhanced Rubisco and carbonic anhydrase activity in tomato within 72 hours.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- metabolites of Fusarium oxysporum and Aspergillus nigere1
- Interactor
- Fusarium oxysporum
_(Fusarium_oxysporum_f.sp._batatas)_1234227-PPT-Clemson_University.jpg?width=60)
Fusarium oxysporume1pathogen - Second interactor
- Aspergillus niger
Aspergillus nigere1other - Outcome
- activity of Rubisco and Carbonic anhydrasee0
- Direction
- increasee0
- Qualifier
- within 72 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_(Fusarium_oxysporum_f.sp._batatas)_1234227-PPT-Clemson_University.jpg?width=500)
Verbatim
e0“Both the metabolites could significantly increase the activity of Rubisco and Carbonic anhydrase within 72 h of treatment in both tomato and barley.”
e1“metabolites of Fusarium oxysporum and Aspergillus niger”
Claim · model-written summary
Fungal metabolites significantly enhanced Rubisco and carbonic anhydrase activity in barley within 72 hours.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- metabolites of Fusarium oxysporum and Aspergillus nigere1
- Interactor
- Fusarium oxysporumFusarium oxysporume1pathogen
- Second interactor
- Aspergillus nigerAspergillus nigere1other
- Outcome
- activity of Rubisco and Carbonic anhydrasee0
- Direction
- increasee0
- Qualifier
- within 72 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Both the metabolites could significantly increase the activity of Rubisco and Carbonic anhydrase within 72 h of treatment in both tomato and barley.”
e1“metabolites of Fusarium oxysporum and Aspergillus niger”
Claim · model-written summary
Combined fungal metabolite spray produced a more pronounced enzyme response.
- Taxon
- tomato and barleySolanum lycopersicumHordeum vulgaree1
- Treatment
- fungal metabolites were sprayed in combinatione0
- Outcome
- activity of Rubisco and Carbonic anhydrasee2
- Direction
- more pronouncede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect was more pronounced when the fungal metabolites were sprayed in combination”
e1“aseptically raised tomato and barley plants”
e2“The activity of Rubisco and Carbonic anhydrase was estimated”
Claim · model-written summary
Preinfection with respective pathogens reduced the metabolite effect.
- Taxon
- tomato and barleySolanum lycopersicumHordeum vulgaree1
- Treatment
- pre-infected with their respective pathogense0
- Outcome
- metabolite effecte0
- Direction
- reducede0
Not reportedInteractorInteractor roleComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the metabolite effect was reduced if the plants were pre-infected with their respective pathogens”
e1“aseptically raised tomato and barley plants”
Claim · model-written summary
Rubisco and carbonic anhydrase activities were positively correlated after metabolite application.
- Taxon
- tomato and barleySolanum lycopersicumHordeum vulgaree1
- Treatment
- application of these metabolitese0
- Outcome
- positive correlation between rubisco and carbonic anhydrasee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of these metabolites, either singly or in combination in the host plants demonstrated a positive correlation between rubisco and carbonic anhydrase.”
e1“aseptically raised tomato and barley plants”
The same questions in other papers
Fusarium oxysporum · physiology: photosynthesis · Solanum lycopersicum (tomato)Results agree
1 paper in the same direction as this paper
- positive
Aspergillus niger · physiology: photosynthesis · Solanum lycopersicum (tomato)Results agree
1 paper in the same direction as this paper
- positive
application · physiology: photosynthesis · Solanum lycopersicum (tomato)Positive and negative results
40 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- negative
40 papers more in this group
See all 44 papers →application · physiology: photosynthesis · Hordeum vulgare (barley)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 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.