Abstract
Pot experiments were conducted to evaluate the possible interaction of salinity (osmotic potential -0.3, -0.9 and -1.2 MPa) and occurrence of Azospirillum lipoferum or exogenous gibberellic acid (GA3) (100 µg g-1) on growth and some physiological parameters of maize. 15N-uptake as well as the percentage of nitrogen derived from 15N-fertilizer were decreased by increasing the NaCl concentrations and completely inhibited at concentrations corresponding to osmotic potentials -0.9 and -1.2 MPa. The percentage of nitrogen originating from N2 fixation was significantly correlated to the total counts of Azospirillum cells that colonized the histosphere. At high NaCl concentrations although no significant changes in N % in shoot dry mass either in inoculated or uninoculated plants were observed, the total N-yield [mg(N) pot-1] was decreased. Fresh and dry shoot mass significantly increased by Azospirillum inoculation. Azospirillum and GA3 treatments were positively correlated with most of the parameters analysed. Azospirillum inoculation or GA3 application at NaCl concentrations up to -1.2 MPa significantly increased the chlorophyll, K, Ca, soluble saccharides and protein contents as compared with control plants.
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Claims 13
Claim · model-written summary
Increasing NaCl reduced 15N uptake.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“15N-uptake as well as the percentage of nitrogen derived from 15N-fertilizer were decreased by increasing the NaCl concentrations”
t0“Zea mays”
Claim · model-written summary
Increasing NaCl reduced the percentage of nitrogen derived from fertilizer.
- Treatment
- increasing the NaCl concentrationse0
- Outcome
- percentage of nitrogen derived from 15N-fertilizere0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“15N-uptake as well as the percentage of nitrogen derived from 15N-fertilizer were decreased by increasing the NaCl concentrations”
t0“Zea mays”
Claim · model-written summary
At -0.9 and -1.2 MPa, fertilizer nitrogen uptake was completely inhibited.
- Treatment
- concentrations corresponding to osmotic potentials -0.9 and -1.2 MPae0
- Outcome
- 15N-uptaket1
- Direction
- completely inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“completely inhibited at concentrations corresponding to osmotic potentials -0.9 and -1.2 MPa”
t0“Zea mays”
t1“15N-uptake”
e1“At high NaCl concentrations although no significant changes in N % in shoot dry mass either in inoculated or uninoculated plants were observed”
Claim · model-written summary
Nitrogen from N2 fixation correlated significantly with Azospirillum cell counts.
- Interactor
- Azospirillum
Azospirillume0symbiont - Outcome
- percentage of nitrogen originating from N2 fixatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percentage of nitrogen originating from N2 fixation was significantly correlated to the total counts of Azospirillum cells that colonized the histosphere”
t0“Zea mays”
Claim · model-written summary
At high salinity, shoot dry mass nitrogen percentage did not significantly change.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At high NaCl concentrations although no significant changes in N % in shoot dry mass either in inoculated or uninoculated plants were observed”
t0“Zea mays”
Claim · model-written summary
At high salinity, total nitrogen yield decreased.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the total N-yield [mg(N) pot-1] was decreased”
t0“Zea mays”
t1“15N-uptake”
e1“At high NaCl concentrations although no significant changes in N % in shoot dry mass either in inoculated or uninoculated plants were observed”
Claim · model-written summary
Azospirillum inoculation significantly increased fresh and dry shoot mass.
- Treatment
- Azospirillum inoculatione0
- Interactor
- AzospirillumAzospirillume0symbiont
- Outcome
- Fresh and dry shoot masse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fresh and dry shoot mass significantly increased by Azospirillum inoculation”
t0“Zea mays”
Claim · model-written summary
Azospirillum treatment correlated positively with most measured parameters.
- Treatment
- Azospirillume0
- Interactor
- AzospirillumAzospirillume0symbiont
- Outcome
- most of the parameters analysede0
- Direction
- positively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Azospirillum and GA3 treatments were positively correlated with most of the parameters analysed”
t0“Zea mays”
Claim · model-written summary
GA3 treatment correlated positively with most measured parameters.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Azospirillum and GA3 treatments were positively correlated with most of the parameters analysed”
t0“Zea mays”
Claim · model-written summary
Azospirillum inoculation under salinity increased chlorophyll, K and Ca contents versus control.
- Treatment
- Azospirillum inoculatione0
- Interactor
- AzospirillumAzospirillume0symbiont
- Outcome
- chlorophyll, K, Cae0
- Direction
- increasede0
- Qualifier
- NaCl concentrations up to -1.2 MPae0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Azospirillum inoculation or GA3 application at NaCl concentrations up to -1.2 MPa significantly increased the chlorophyll, K, Ca, soluble saccharides and protein contents as compared with control plants”
t0“Zea mays”
Claim · model-written summary
Azospirillum inoculation under salinity increased soluble saccharides and protein contents.
- Treatment
- Azospirillum inoculatione0
- Interactor
- AzospirillumAzospirillume0symbiont
- Outcome
- soluble saccharides and protein contentse0
- Direction
- increasede0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Azospirillum inoculation or GA3 application at NaCl concentrations up to -1.2 MPa significantly increased the chlorophyll, K, Ca, soluble saccharides and protein contents as compared with control plants”
t0“Zea mays”
Claim · model-written summary
GA3 under salinity increased chlorophyll, K and Ca contents versus control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Azospirillum inoculation or GA3 application at NaCl concentrations up to -1.2 MPa significantly increased the chlorophyll, K, Ca, soluble saccharides and protein contents as compared with control plants”
t0“Zea mays”
Claim · model-written summary
GA3 under salinity increased soluble saccharides and protein contents versus control.
- Treatment
- GA3 applicatione0
- Outcome
- soluble saccharides and protein contentse0
- Direction
- increasede0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Azospirillum inoculation or GA3 application at NaCl concentrations up to -1.2 MPa significantly increased the chlorophyll, K, Ca, soluble saccharides and protein contents as compared with control plants”
t0“Zea mays”
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