Abstract
P is one of the macronutrients required for plant growth and development, whereas Fe is a micronutrient required for various metabolic functions of plant. However, under acidic soil conditions, due to low pH Fe2+ toxicity and P deficiency occurs leading to decrease in crop productivity. The present investigation was undertaken to understand molecular physiology of acidity tolerance with special reference to P-deficiency and Fe-toxicity tolerance in Shasarang (LR11). Under lowland acid soils (pH=5.2), KMR3 showed a higher bronzing score of 3 at 110 DAT and LR11 showed very little or no bronzing. The field performance of LR11 was better as compared to KMR3 with respect to yield related traits. Furthermore, our data confirmed that LR11 is infact Fe toxicity tolerant and “Shasarang” means “tolerant to Fe” in Khasi. The susceptible genotype, KMR3, showed significant decrease in shoot and root dry weight under low P and Fe toxicity conditions in hydroponic. However, in LR11, the difference in root-shoot dry weight in control and treatment were not significant. Excess amounts of iron in hydroponics could lead to distinct variation in the bronzing score, root-shoot biomass. Based on this criteria Nipponbare has been considered tolerant and Kasalath as susceptible. In our case, screening using excess of Fe and low P simultaneously, Kasalath performed at par with LR11. This study, therefore, suggests that identified tolerant LR11 can be a potential target for enhancing rice production introducing tolerance to acidity under lowland rainfed field conditions.
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Claims 11
Claim · model-written summary
Under lowland acid soils, KMR3 showed a higher bronzing score of 3 at 110 DAT than LR11.
- Taxon
- rice
Oryza sativat0 - Material
- KMR3e1
- Outcome
- bronzing scoree1
- Direction
- highere1
- Value
- 3 at 110 DATe1
- Comparator
- LR11e1
- Setting
- lowland acid soils (pH=5.2)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“North Eastern Rice”
e1“Under lowland acid soils (pH=5.2), KMR3 showed a higher bronzing score of 3 at 110 DAT and LR11 showed very little or no bronzing”
Claim · model-written summary
Under lowland acid soils, LR11 showed very little or no bronzing.
- Taxon
- riceOryza sativat0
- Material
- LR11e1
- Outcome
- bronzinge1
- Direction
- very little or noe1
- Setting
- lowland acid soils (pH=5.2)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“North Eastern Rice”
e1“Under lowland acid soils (pH=5.2), KMR3 showed a higher bronzing score of 3 at 110 DAT and LR11 showed very little or no bronzing”
Claim · model-written summary
The field performance of LR11 was better than that of KMR3 for yield related traits.
- Taxon
- riceOryza sativat0
- Material
- LR11e2
- Outcome
- yield related traitse2
- Direction
- bettere2
- Comparator
- KMR3e2
- Setting
- fielde2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“North Eastern Rice”
e2“The field performance of LR11 was better as compared to KMR3 with respect to yield related traits”
Claim · model-written summary
LR11 was confirmed to be Fe toxicity tolerant.
- Taxon
- riceOryza sativat0
- Material
- LR11e3
- Outcome
- Fe toxicity tolerante3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“North Eastern Rice”
e3“our data confirmed that LR11 is infact Fe toxicity tolerant”
Claim · model-written summary
Under low P and Fe toxicity conditions in hydroponics, KMR3 showed a significant decrease in shoot and root dry weight.
- Taxon
- riceOryza sativat0
- Material
- KMR3e4
- Treatment
- low P and Fe toxicity conditionse4
- Outcome
- shoot and root dry weighte4
- Direction
- decreasee4
- Setting
- hydroponice4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“North Eastern Rice”
e4“The susceptible genotype, KMR3, showed significant decrease in shoot and root dry weight under low P and Fe toxicity conditions in hydroponic”
Claim · model-written summary
In LR11 the difference in root-shoot dry weight between control and treatment was not significant.
- Taxon
- riceOryza sativat0
- Material
- LR11e5
- Outcome
- root-shoot dry weighte5
- Comparator
- controle5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“North Eastern Rice”
e5“in LR11, the difference in root-shoot dry weight in control and treatment were not significant”
Claim · model-written summary
Excess iron in hydroponics could lead to distinct variation in the bronzing score and root-shoot biomass.
- Taxon
- riceOryza sativat0
- Treatment
- Excess amounts of irone6
- Outcome
- bronzing score, root-shoot biomasse6
- Setting
- hydroponicse6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“North Eastern Rice”
e6“Excess amounts of iron in hydroponics could lead to distinct variation in the bronzing score, root-shoot biomass”
Claim · model-written summary
Nipponbare has been considered tolerant (cited criterion of earlier work).
- Taxon
- riceOryza sativat0
- Material
- Nipponbaree7
- Outcome
- considered tolerante7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“North Eastern Rice”
e7“Based on this criteria Nipponbare has been considered tolerant and Kasalath as susceptible”
Claim · model-written summary
Kasalath has been classed as susceptible (cited criterion of earlier work).
- Taxon
- riceOryza sativat0
- Material
- Kasalathe7
- Outcome
- susceptiblee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“North Eastern Rice”
e7“Based on this criteria Nipponbare has been considered tolerant and Kasalath as susceptible”
Claim · model-written summary
Under screening with excess Fe and low P simultaneously, Kasalath performed at par with LR11.
- Taxon
- riceOryza sativat0
- Material
- Kasalathe7
- Treatment
- excess of Fe and low P simultaneouslye7
- Outcome
- performede7
- Direction
- at pare7
- Comparator
- LR11e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“North Eastern Rice”
e7“In our case, screening using excess of Fe and low P simultaneously, Kasalath performed at par with LR11”
Claim · model-written summary
LR11 can be a potential target for enhancing rice production with tolerance to acidity under lowland rainfed field conditions.
- Taxon
- riceOryza sativat0
- Material
- LR11e7
- Outcome
- potential target for enhancing rice productione7
- Setting
- lowland rainfed field conditionse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“North Eastern Rice”
e7“identified tolerant LR11 can be a potential target for enhancing rice production introducing tolerance to acidity under lowland rainfed field conditions”