Abstract
Ahmad, B., S. Suleiman and M. Ahmad. 2024. Effect of Silicon and Salicylic Acid in Biochemical Defence Mechanisms of Santa Teriza Lemon Trees to Reduce Citrus Leaf Miner Damage. Arab Journal of Plant Protection, 42(1): 67-74. https://doi.org/10.22268/AJPP-001208 The effect of foliar spray of young lemon trees (Santa Teresa) with silicon (200-400 ppm) and salicylic acid (50-75ppm), on antioxidant enzymes activities (catalase CAT), H2O2 content, total chlorophyll, α-free amino acids, leaf thickness and their influence on leaf miner (Phyllocnistis citrella) biology (pupa length and oviposition) under field condition was investigated. The results obtained indicated that treatment with silicon and salicylic acid reduced biotic stress due to citrus leaf miner on the Santa Teresa Lime trees, leaf content of H2O2 (0.4 2-0.43 nmol g-1 FW), catalase activity were decreased (0.213 – 0.211 mmol/ min/g fresh weight), There was an increase in α-free amino acids content (45.3-40.2 μg/g fresh weight), total chlorophyll (41.52-35.17 spad) and leaf thickness (2.1-1.3 mm), and these changes were clearly manifested in the biology of citrus leaf miner in vivo, such as reduction in pupa length (2.10-2.20 mm), and the average number of eggs (8.7- 10.7 eggs). Such results are promising for the control of citrus leaf miner without using pesticides. Keywords: Silicon, salicylic acid, Santa Teresa lime, antioxidant enzyme (CAT), H2O2 content, total chlorophyll, α-free amino acids, leaf thickness, citrus leaf miner
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Claims 8
Claim · model-written summary
Silicon and salicylic acid reduced citrus leaf miner biotic stress on lime trees.
- Taxon
- Santa Teresa Lime treese0
- Treatment
- silicon and salicylic acide0
- Interactor
- citrus leaf minere0pest
- Outcome
- biotic stress due to citrus leaf minere0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“treatment with silicon and salicylic acid reduced biotic stress due to citrus leaf miner on the Santa Teresa Lime trees”
Claim · model-written summary
Sprays decreased leaf H2O2 content to 0.4 2-0.43 nmol g-1 FW.
- Taxon
- Santa Teriza Lemon Treest0
- Treatment
- silicon and salicylic acide1
- Outcome
- leaf content of H2O2e0
- Direction
- decreasede0
- Value
- 0.4 2-0.43 nmol g-1 FWe0
Not reportedComparator
Verbatim
e0“leaf content of H2O2 (0.4 2-0.43 nmol g-1 FW), catalase activity were decreased”
t0“Santa Teriza Lemon Trees”
e1“silicon and salicylic acid”
Claim · model-written summary
Sprays decreased catalase activity to 0.213 – 0.211 mmol/ min/g fresh weight.
- Taxon
- Santa Teriza Lemon Treest0
- Treatment
- silicon and salicylic acide1
- Outcome
- catalase activitye0
- Direction
- decreasede0
- Value
- 0.213 – 0.211 mmol/ min/g fresh weighte0
Not reportedComparator
Verbatim
e0“catalase activity were decreased (0.213 – 0.211 mmol/ min/g fresh weight)”
t0“Santa Teriza Lemon Trees”
e1“silicon and salicylic acid”
Claim · model-written summary
Sprays increased α-free amino acids content to 45.3-40.2 μg/g fresh weight.
- Taxon
- Santa Teriza Lemon Treest0
- Treatment
- silicon and salicylic acide1
- Outcome
- α-free amino acids contente0
- Direction
- increasee0
- Value
- 45.3-40.2 μg/g fresh weighte0
Not reportedComparator
Verbatim
e0“increase in α-free amino acids content (45.3-40.2 μg/g fresh weight)”
t0“Santa Teriza Lemon Trees”
e1“silicon and salicylic acid”
Claim · model-written summary
Sprays increased total chlorophyll to 41.52-35.17 spad.
- Taxon
- Santa Teriza Lemon Treest0
- Treatment
- silicon and salicylic acide1
- Outcome
- total chlorophylle0
- Direction
- increasee2
- Value
- 41.52-35.17 spade0
Not reportedComparator
Verbatim
e0“total chlorophyll (41.52-35.17 spad)”
e2“There was an increase in α-free amino acids content”
t0“Santa Teriza Lemon Trees”
e1“silicon and salicylic acid”
Claim · model-written summary
Sprays increased leaf thickness to 2.1-1.3 mm.
- Taxon
- Santa Teriza Lemon Treest0
- Treatment
- silicon and salicylic acide1
- Outcome
- leaf thicknesse0
- Direction
- increasee2
- Value
- 2.1-1.3 mme0
Not reportedComparator
Verbatim
e0“leaf thickness (2.1-1.3 mm)”
e2“There was an increase in α-free amino acids content”
t0“Santa Teriza Lemon Trees”
e1“silicon and salicylic acid”
Claim · model-written summary
Sprays reduced leaf miner pupa length to 2.10-2.20 mm.
- Taxon
- Phyllocnistis citrella
Phyllocnistis citrellae3 - Treatment
- silicon and salicylic acide1
- Interactor
- Santa Teriza Lemon Treest0host
- Outcome
- pupa lengthe0
- Direction
- reductione0
- Value
- 2.10-2.20 mme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduction in pupa length (2.10-2.20 mm)”
t0“Santa Teriza Lemon Trees”
e1“silicon and salicylic acid”
e3“Phyllocnistis citrella”
Claim · model-written summary
Sprays reduced leaf miner egg counts to 8.7- 10.7 eggs.
- Taxon
- Phyllocnistis citrellaPhyllocnistis citrellae3
- Treatment
- silicon and salicylic acide1
- Interactor
- Santa Teriza Lemon Treest0host
- Outcome
- average number of eggse0
- Direction
- reductione0
- Value
- 8.7- 10.7 eggse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduction in pupa length (2.10-2.20 mm), and the average number of eggs (8.7- 10.7 eggs)”
t0“Santa Teriza Lemon Trees”
e1“silicon and salicylic acid”
e3“Phyllocnistis citrella”