Abstract
The present study was conducted to assess whether exogenous applied salicylic acid (SA) as a foliar spray could ameliorate the adverse effects of virus infection in two maize cultivars (maize cv. sabaini and maize cv. Nab El-gamal). The plants were grown under normal field conditions for two weeks in sand clay soil, and then sprayed with either 2 or 4 mM SA. Two weeks later, plants were subjected to infection with two different concentrations of virus (TMV1 and TMV2), and were harvested 10 days later. Fresh and dry matter, shoot and root lengths, proline, soluble protein, soluble sugars as well as nitrate reductase activity were measured. Both fresh and dry matter were decreased under virus infection however, SA enhanced the fresh and dry matter production in both cultivars regardless the type of virus or SA concentration used. In roots, both fresh and dry matters were not affected. The shoot length was enhanced by salicylic acid than root length regardless the concentration used or virus treatment. The water content was much higher in shoots than roots especially in maize cultivar sabaini. Proline was accumulated in SA virus infected plants than reference control especially in cv sabaini. Soluble proteins and soluble sugars were accumulated in SA virus infected plants and in cv sabaini more than Nab El-gamal as compared with reference control. NRA was reduced in virus infected cultivars and cv sabaini was dramatically affected than Nab El-gamal. Treatment of plants with SA had a positive effect on preserving the activity of NR but was still less than the reference control regardless the cultivar used. Key words: Nitrate reductase, proline, protein, salicylic acid, sugars, viruses.
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Claims 11
Claim · model-written summary
Virus infection decreased fresh and dry matter in maize.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both fresh and dry matter were decreased under virus infection”
t0“maize”
Claim · model-written summary
Salicylic acid enhanced fresh and dry matter production in both cultivars irrespective of virus type or SA concentration.
- Treatment
- SAe0
- Outcome
- fresh and dry matter productione0
- Direction
- enhancede0
- Qualifier
- regardless the type of virus or SA concentration usede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SA enhanced the fresh and dry matter production in both cultivars regardless the type of virus or SA concentration used”
t0“maize”
Claim · model-written summary
Root fresh and dry matter were unaffected.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In roots, both fresh and dry matters were not affected”
t0“maize”
Claim · model-written summary
Salicylic acid enhanced shoot length more than root length irrespective of concentration or virus treatment.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The shoot length was enhanced by salicylic acid than root length regardless the concentration used or virus treatment”
t0“maize”
Claim · model-written summary
Shoot water content exceeded root water content, especially in cultivar sabaini.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The water content was much higher in shoots than roots especially in maize cultivar sabaini”
Claim · model-written summary
Proline accumulated in SA treated virus infected plants, especially cultivar sabaini, versus the reference control.
- Material
- sabainie0
- Treatment
- SA virus infectede0
- Outcome
- Prolinee0
- Direction
- accumulatede0
- Comparator
- reference controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Proline was accumulated in SA virus infected plants than reference control especially in cv sabaini”
t0“maize”
Claim · model-written summary
Soluble proteins and soluble sugars accumulated in SA treated virus infected plants versus reference control.
- Treatment
- SA virus infectede0
- Outcome
- Soluble proteins and soluble sugarse0
- Direction
- accumulatede0
- Comparator
- reference controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soluble proteins and soluble sugars were accumulated in SA virus infected plants and in cv sabaini more than Nab El-gamal as compared with reference control”
t0“maize”
Claim · model-written summary
Cultivar sabaini accumulated more soluble proteins and sugars than Nab El-gamal under SA and virus treatment.
- Material
- sabainie0
- Outcome
- Soluble proteins and soluble sugarse0
- Direction
- more thane0
- Comparator
- Nab El-gamale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soluble proteins and soluble sugars were accumulated in SA virus infected plants and in cv sabaini more than Nab El-gamal as compared with reference control”
t0“maize”
Claim · model-written summary
Virus infection reduced nitrate reductase activity in maize cultivars.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NRA was reduced in virus infected cultivars”
t0“maize”
Claim · model-written summary
Virus infection affected nitrate reductase activity more strongly in sabaini than Nab El-gamal.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cv sabaini was dramatically affected than Nab El-gamal”
t0“maize”
Claim · model-written summary
SA preserved nitrate reductase activity but it remained below the reference control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of plants with SA had a positive effect on preserving the activity of NR but was still less than the reference control regardless the cultivar used”
t0“maize”
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