Abstract
Rice (Oryza sativa L.) has mechanism for morphological, physiological, and biochemical self-defense in response to drought conditions. The ability of osmotolerant rhizobacteria to develop association with plants suggests that it could be used as an inoculum to support plant growth under drought stress. The purpose of this study is to determine the response of ‘IR64’ and ‘Situ Bagendit’ to the inoculation with osmotolerant rhizobacteria under drought conditions. The experiment had 3 treatment factors: 2 rice cultivars ('IR64' and 'Situ Bagendit'), 3 drought treatments (25%, 50% and 100% field capacity), and 2 types of rhizobacteria treatments (without inoculation and with inoculation using osmotolerant rhizobacteria (Enterobacter flavescens). Plant growth was measured in terms of plant height, number of leaves, number of tillers and panicles, and percentage of filled grain. Physiological and biochemical parameters, namely chlorophyll, carotenoids, proline, superoxide dismutase (SOD) peroxidase (POX) and ascorbate peroxidase (APX) were measured. The inoculation of osmotolerant rhizobacteria enhanced ‘IR64’ and ‘Situ Bagendit’ growth (plant height, number of leaves, tillers and panicles) and increased the percentage of grains in ‘IR64’ cultivar. Proline content, SOD, and APX activities were all increased by osmotolerant rhizobacteria inoculation, however, carotenoid content was decreased. Plant growth, physiological and biochemical responses of both cultivar to drought were enhanced by inoculation with osmotolerant rhizobacteria.
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Claims 7
Claim · model-written summary
Inoculation with osmotolerant rhizobacteria enhanced plant height and number of leaves of rice cultivar IR64 relative to no inoculation, under drought.
- Taxon
- Oryza sativa
Oryza sativae0 - Material
- IR64e1
- Treatment
- inoculation of osmotolerant rhizobacteriae1
- Interactor
- osmotolerant rhizobacteriae1symbiont
- Outcome
- plant height, number of leavese1
- Direction
- enhancede1
- Comparator
- without inoculatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa”
e1“inoculation of osmotolerant rhizobacteria enhanced ‘IR64’ and ‘Situ Bagendit’ growth (plant height, number of leaves”
e2“without inoculation”
Claim · model-written summary
Inoculation with osmotolerant rhizobacteria enhanced the number of tillers and panicles of rice cultivar IR64 relative to no inoculation, under drought.
- Taxon
- Oryza sativaOryza sativae0
- Material
- IR64e1
- Treatment
- inoculation of osmotolerant rhizobacteriae1
- Interactor
- osmotolerant rhizobacteriae1symbiont
- Outcome
- tillers and paniclese1
- Direction
- enhancede1
- Comparator
- without inoculatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa”
e1“inoculation of osmotolerant rhizobacteria enhanced ‘IR64’ and ‘Situ Bagendit’ growth (plant height, number of leaves, tillers and panicles”
e2“without inoculation”
Claim · model-written summary
Inoculation with osmotolerant rhizobacteria enhanced plant height and number of leaves of rice cultivar Situ Bagendit relative to no inoculation, under drought.
- Taxon
- Oryza sativaOryza sativae0
- Material
- Situ Bagendite1
- Treatment
- inoculation of osmotolerant rhizobacteriae1
- Interactor
- osmotolerant rhizobacteriae1symbiont
- Outcome
- plant height, number of leavese1
- Direction
- enhancede1
- Comparator
- without inoculatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa”
e1“inoculation of osmotolerant rhizobacteria enhanced ‘IR64’ and ‘Situ Bagendit’ growth (plant height, number of leaves”
e2“without inoculation”
Claim · model-written summary
Inoculation with osmotolerant rhizobacteria enhanced the number of tillers and panicles of rice cultivar Situ Bagendit relative to no inoculation, under drought.
- Taxon
- Oryza sativaOryza sativae0
- Material
- Situ Bagendite1
- Treatment
- inoculation of osmotolerant rhizobacteriae1
- Interactor
- osmotolerant rhizobacteriae1symbiont
- Outcome
- tillers and paniclese1
- Direction
- enhancede1
- Comparator
- without inoculatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa”
e1“inoculation of osmotolerant rhizobacteria enhanced ‘IR64’ and ‘Situ Bagendit’ growth (plant height, number of leaves, tillers and panicles”
e2“without inoculation”
Claim · model-written summary
Inoculation with osmotolerant rhizobacteria increased the percentage of filled grains in rice cultivar IR64.
- Taxon
- Oryza sativaOryza sativae0
- Material
- IR64e3
- Treatment
- inoculation of osmotolerant rhizobacteriae1
- Interactor
- osmotolerant rhizobacteriae1symbiont
- Outcome
- percentage of grainse3
- Direction
- increasede3
- Comparator
- without inoculatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa”
e1“inoculation of osmotolerant rhizobacteria”
e2“without inoculation”
e3“increased the percentage of grains in ‘IR64’ cultivar”
Claim · model-written summary
Inoculation with osmotolerant rhizobacteria increased proline content and SOD and APX activities in rice.
- Taxon
- Oryza sativaOryza sativae0
- Treatment
- osmotolerant rhizobacteria inoculatione1
- Interactor
- osmotolerant rhizobacteriae1symbiont
- Outcome
- Proline content, SOD, and APX activitiese1
- Direction
- increasede1
- Comparator
- without inoculatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa”
e1“Proline content, SOD, and APX activities were all increased by osmotolerant rhizobacteria inoculation”
e2“without inoculation”
Claim · model-written summary
Inoculation with osmotolerant rhizobacteria decreased carotenoid content in rice.
- Taxon
- Oryza sativaOryza sativae0
- Treatment
- osmotolerant rhizobacteria inoculatione1
- Interactor
- osmotolerant rhizobacteriae1symbiont
- Outcome
- carotenoid contente3
- Direction
- decreasede3
- Comparator
- without inoculatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa”
e1“osmotolerant rhizobacteria inoculation”
e2“without inoculation”
e3“carotenoid content was decreased”
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