Abstract
Effect of different auxins, namely, 2,4-dichlorophenoxyacetic acid (2,4-D), naphthalene acetic acid (NAA) and indole acetic acid (IAA) and Azospirillum brasilense bioinoculation on the enhancement of polygalacturonase (PG) activity in rice roots during para nodulation and endorhizosphere colonization of Azospirillum was studied under in vitro condition. It was observed that Azospirillum bioinoculation could augment PG activity of rice roots to a lesser extent without any root morphogenesis whereas auxin application together with Azospirillum bioinoculation enhanced PG activity of rice roots to a higher level which resulted in better root morphogenesis (para nodule) and endorhizosphere colonisation of A. brasilense. Among the three auxins tested, 2,4-D, even at lower concentration (0.5 ppm) enhanced the rice root PG activity, root morphogenesis and endorhizosphere colonization of Azospirillum while it was 2.0 ppm with NAA and variable with IAA. It is concluded that there is a positive correlation existing among PG activity, degree of root morphogenesis and endorhizosphere colonization of Azospirillum brasilense in rice roots and the degree of correlation is determined by the chemical composition, concentration and mode of action of the auxin utilised.
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Claims 6
Claim · model-written summary
Azospirillum bioinoculation alone augmented rice root PG activity to a lesser extent than auxin plus Azospirillum, without root morphogenesis.
- Taxon
- rice
Oryza sativae1 - Organ / stage
- rootse1
- Treatment
- Azospirillum bioinoculatione1
- Interactor
- Azospirillum
Azospirillume1symbiont - Outcome
- PG activity of rice rootse1
- Direction
- augmente1
- Qualifier
- without any root morphogenesise1
- Comparator
- auxin application together with Azospirillum bioinoculatione1
- Setting
- in vitro conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“was studied under in vitro condition”
e1“Azospirillum bioinoculation could augment PG activity of rice roots to a lesser extent without any root morphogenesis whereas auxin application together with Azospirillum bioinoculation enhanced PG activity of rice roots to a higher level”
Claim · model-written summary
Auxin application together with Azospirillum bioinoculation enhanced rice root PG activity to a higher level than Azospirillum bioinoculation alone.
- Taxon
- riceOryza sativae1
- Treatment
- auxin application together with Azospirillum bioinoculatione1
- Interactor
- AzospirillumAzospirillume1symbiont
- Outcome
- PG activity of rice rootse1
- Direction
- enhancede1
- Comparator
- Azospirillum bioinoculatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Azospirillum bioinoculation could augment PG activity of rice roots to a lesser extent without any root morphogenesis whereas auxin application together with Azospirillum bioinoculation enhanced PG activity of rice roots to a higher level”
Claim · model-written summary
Auxin application together with Azospirillum bioinoculation resulted in better root morphogenesis (para nodule).
- Taxon
- riceOryza sativae1
- Treatment
- auxin application together with Azospirillum bioinoculatione1
- Outcome
- root morphogenesise2
- Direction
- bettere2
- Comparator
- Azospirillum bioinoculatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Azospirillum bioinoculation could augment PG activity of rice roots to a lesser extent without any root morphogenesis whereas auxin application together with Azospirillum bioinoculation enhanced PG activity of rice roots to a higher level”
e2“which resulted in better root morphogenesis (para nodule) and endorhizosphere colonisation of A. brasilense”
Claim · model-written summary
Auxin application together with Azospirillum bioinoculation resulted in better endorhizosphere colonisation of A. brasilense.
- Taxon
- riceOryza sativae1
- Treatment
- auxin application together with Azospirillum bioinoculatione1
- Interactor
- A. brasilense
Azospirillum brasilensee2symbiont - Outcome
- endorhizosphere colonisatione2
- Direction
- bettere2
- Comparator
- Azospirillum bioinoculatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Azospirillum bioinoculation could augment PG activity of rice roots to a lesser extent without any root morphogenesis whereas auxin application together with Azospirillum bioinoculation enhanced PG activity of rice roots to a higher level”
e2“which resulted in better root morphogenesis (para nodule) and endorhizosphere colonisation of A. brasilense”
Claim · model-written summary
2,4-D at 0.5 ppm, even at a lower concentration than the other auxins tested, enhanced rice root PG activity, root morphogenesis and endorhizosphere colonisation.
- Taxon
- riceOryza sativae3
- Treatment
- 2,4-De3
- Interactor
- AzospirillumAzospirillume3symbiont
- Outcome
- rice root PG activity, root morphogenesis and endorhizosphere colonizatione3
- Direction
- enhancede3
- Value
- 0.5 ppme3
- Comparator
- the three auxins testede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“2,4-D, even at lower concentration (0.5 ppm) enhanced the rice root PG activity, root morphogenesis and endorhizosphere colonization of Azospirillum while it was 2.0 ppm with NAA and variable with IAA”
e4“Among the three auxins tested”
Claim · model-written summary
NAA at 2.0 ppm enhanced rice root PG activity, with IAA effects variable.
- Taxon
- riceOryza sativae3
- Treatment
- 2.0 ppm with NAAe3
- Outcome
- rice root PG activitye3
- Direction
- increaseinferrede3
- Qualifier
- variable with IAAe3
- Comparator
- 2,4-De3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“2,4-D, even at lower concentration (0.5 ppm) enhanced the rice root PG activity, root morphogenesis and endorhizosphere colonization of Azospirillum while it was 2.0 ppm with NAA and variable with IAA”
The same questions in other papers
Azospirillum · organism · Oryza sativa (rice)Results agree
1 paper in the same direction as this paper
- positive
class · organism · Oryza sativa (rice)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
1 paper more in this group
See all 5 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.