Abstract
Huanglongbing (HLB), or citrus greening disease, is significant havoc to the citrus cultivation that influences citrus industry decline in India and elsewhere. HLB is a systemic, fastidious, phloem inhabited alpha-proteobacterial disease caused by ‘Candidatus Liberibacter asiaticus’ (CLas). Currently, there is no established cure for this emerging but century-old disease. The present study discussed change in cycle threshold (Ct) values of CLas bacterium using qPCR diagnostic method upon applying antibiotics and micronutrients to HLB infected sweet orange cv. Sathgudi plants. Five antibiotics and three micronutrients were selected and applied as a foliar spray in 3 different spraying periods. Results demonstrated that ampicillin sodium (Ct=25.41) and rifampicin (Ct=23.62) showed a significant effect on the suppression of bacterial titre compared to other selected antibiotics at 90 days after the first spray. However, there was no significant effect on the bacterial population regarding its titre and symptom expression when any of the selected micronutrients were applied in any of the spraying periods. Hence, the reported antibiotics could help in the management of an infected HLB citrus orchard at the expense of minimizing total yield loss when they are judiciously used.
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Claims 4
Claim · model-written summary
Ampicillin sodium significantly suppressed CLas bacterial titre compared with other selected antibiotics at 90 days after the first spray.
- Taxon
- sweet orange
Citrus sinensise0 - Material
- cv. Sathgudie0
- Treatment
- ampicillin sodiume1
- Interactor
- CLase0pathogen
- Outcome
- bacterial titree1
- Direction
- suppressione1
- Value
- Ct=25.41e1
- Comparator
- other selected antibioticse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“change in cycle threshold (Ct) values of CLas bacterium using qPCR diagnostic method upon applying antibiotics and micronutrients to HLB infected sweet orange cv. Sathgudi plants”
e1“ampicillin sodium (Ct=25.41) and rifampicin (Ct=23.62) showed a significant effect on the suppression of bacterial titre compared to other selected antibiotics at 90 days after the first spray”
Claim · model-written summary
Rifampicin significantly suppressed CLas bacterial titre compared with other selected antibiotics at 90 days after the first spray.
- Taxon
- sweet orangeCitrus sinensise0
- Material
- cv. Sathgudie0
- Treatment
- rifampicine1
- Interactor
- CLase0pathogen
- Outcome
- bacterial titree1
- Direction
- suppressione1
- Value
- Ct=23.62e1
- Comparator
- other selected antibioticse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“change in cycle threshold (Ct) values of CLas bacterium using qPCR diagnostic method upon applying antibiotics and micronutrients to HLB infected sweet orange cv. Sathgudi plants”
e1“ampicillin sodium (Ct=25.41) and rifampicin (Ct=23.62) showed a significant effect on the suppression of bacterial titre compared to other selected antibiotics at 90 days after the first spray”
Claim · model-written summary
Selected micronutrients had no significant effect on CLas bacterial population titre or symptom expression in any spraying period.
- Taxon
- sweet orangeCitrus sinensise0
- Treatment
- selected micronutrientse2
- Interactor
- CLase0pathogen
- Outcome
- bacterial population regarding its titre and symptom expressione2
- Direction
- no_changeinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“change in cycle threshold (Ct) values of CLas bacterium using qPCR diagnostic method upon applying antibiotics and micronutrients to HLB infected sweet orange cv. Sathgudi plants”
e2“there was no significant effect on the bacterial population regarding its titre and symptom expression when any of the selected micronutrients were applied in any of the spraying periods”
Claim · model-written summary
Antibiotics could help manage an infected HLB citrus orchard, minimizing total yield loss when they are judiciously used.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Hence, the reported antibiotics could help in the management of an infected HLB citrus orchard at the expense of minimizing total yield loss when they are judiciously used”
The same questions in other papers
micronutrient · molecular: expression · Citrus sinensis (sweet orange)Positive and negative results
1 in the opposite direction
- 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.