Abstract
The biochemical responses of tomato ( Lycopersicon esculentum Mill.) roots to different concentrations of the hormonal elicitors, salicylic acid (SA) and indole acetic acid (IAA), as presoaking treatments, on the healthy and Orobanche ramosa -infected plants were studied in pot experiment under control conditions. Application of SA and IAA activate the production of proline and soluble proteins in tomato roots, where their levels were more pronounced in the infected than the healthy plants. Moreover, both elicitors increased the levels of phenolics and flavonoids accompanied by stimulations in the activities of phenylalanine ammonia lyase (PAL), peroxidase (POX) and polyphenol oxidase (PPO) in tomato roots, where the magnitude of induction were more obvious in infected plants than healthy one. Also, microscopic examination revealed the anatomical differences observed in both untreated healthy and infected plants as well as in plants treated with SA and IAA. The present results indicate the effectiveness of SA and IAA in enhancing resistance of tomato to retard the incidence of infestation by Orobanche. These biochemical and histological changes involved in plant defense mechanisms may be one of the basic ways participate in the action of SA and IAA for increasing resistance in tomato against Orobanche ramosa . Keywords : Orobanche ramosa ; tomato, Induced resistance, Phenolics, PR-proteins . *Corresponding author : Shahnaz Al-Wakeel (e-mail: shahnazalwakeel@yahoo.com) (Received: 12.04.2012 Accepted: 17.07.2012)
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
Salicylic acid and indole acetic acid increased proline and soluble proteins in tomato roots, more in infected plants.
- Taxon
- tomato
Solanum lycopersicumt0 - Organ / stage
- rootse0
- Treatment
- SA and IAAe0
- Outcome
- proline and soluble proteinse0
- Direction
- more pronouncede0
- Comparator
- healthy plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of SA and IAA activate the production of proline and soluble proteins in tomato roots, where their levels were more pronounced in the infected than the healthy plants”
t0“tomato”
Claim · model-written summary
Both elicitors increased phenolics and flavonoids in tomato roots.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- rootse0
- Treatment
- both elicitorse0
- Outcome
- levels of phenolics and flavonoidse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both elicitors increased the levels of phenolics and flavonoids accompanied by stimulations in the activities of phenylalanine ammonia lyase (PAL), peroxidase (POX) and polyphenol oxidase (PPO) in tomato roots”
t0“tomato”
Claim · model-written summary
Both elicitors stimulated PAL, POX and PPO activities in tomato roots.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- rootse0
- Treatment
- both elicitorse0
- Outcome
- activities of phenylalanine ammonia lyase (PAL), peroxidase (POX) and polyphenol oxidase (PPO)e0
- Direction
- stimulationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both elicitors increased the levels of phenolics and flavonoids accompanied by stimulations in the activities of phenylalanine ammonia lyase (PAL), peroxidase (POX) and polyphenol oxidase (PPO) in tomato roots”
t0“tomato”
Claim · model-written summary
Microscopy showed anatomical differences between healthy, infected and elicitor-treated tomato plants.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- anatomical differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“anatomical differences observed in both untreated healthy and infected plants as well as in plants treated with SA and IAA”
t0“tomato”
Claim · model-written summary
SA and IAA enhanced tomato resistance to broomrape infestation.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- SA and IAAe0
- Outcome
- incidence of infestation by Orobanchee0
- Direction
- retarde0
OrobancheNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effectiveness of SA and IAA in enhancing resistance of tomato to retard the incidence of infestation by Orobanche”
t0“tomato”
The same questions in other papers
salicylic acid · physiology: osmolytes · Solanum lycopersicum (tomato)Results differ
18 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
17 papers more in this group
See all 21 papers →resistance inducer · quality: phytochemicals · Solanum lycopersicum (tomato)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
resistance inducer · physiology: antioxidant enzymes · Solanum lycopersicum (tomato)Positive and negative results
11 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
10 papers more in this group
See all 14 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.