Abstract
Environmental factors contribute to over 70% of crop yield losses worldwide. Of these drought and salinity are the most significant causes of crop yield reduction. Rice is an important staple crop that feeds more than half of the world's population. However among the agronomically important cereals rice is the most sensitive to salinity. In the present study we show that exogenous expression of anti-apoptotic genes from diverse origins, AtBAG4 (Arabidopsis), Hsp70 (Citrus tristeza virus) and p35 (Baculovirus), significantly improves salinity tolerance in rice at the whole plant level. Physiological, biochemical and agronomical analyses of transgenic rice expressing each of the anti-apoptotic genes subjected to salinity treatment demonstrated traits associated with tolerant varieties including, improved photosynthesis, membrane integrity, ion and ROS maintenance systems, growth rate, and yield components. Moreover, FTIR analysis showed that the chemical composition of salinity-treated transgenic plants is reminiscent of non-treated, unstressed controls. In contrast, wild type and vector control plants displayed hallmark features of stress, including pectin degradation upon subjection to salinity treatment. Interestingly, despite their diverse origins, transgenic plants expressing the anti-apoptotic genes assessed in this study displayed similar physiological and biochemical characteristics during salinity treatment thus providing further evidence that cell death pathways are conserved across broad evolutionary kingdoms. Our results reveal that anti-apoptotic genes facilitate maintenance of metabolic activity at the whole plant level to create favorable conditions for cellular survival. It is these conditions that are crucial and conducive to the plants ability to tolerate/adapt to extreme environments.
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Claims 9
Claim · model-written summary
Expression of AtBAG4 significantly improved rice salinity tolerance.
- Taxon
- rice
Oryza sativae0 - Treatment
- exogenous expression of anti-apoptotic genese0
- Gene
- AtBAG4e0
- Outcome
- salinity tolerancee0
- Direction
- improvese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous expression of anti-apoptotic genes from diverse origins, AtBAG4 (Arabidopsis), Hsp70 (Citrus tristeza virus) and p35 (Baculovirus), significantly improves salinity tolerance in rice at the whole plant level”
Claim · model-written summary
Expression of Hsp70 significantly improved rice salinity tolerance.
- Taxon
- riceOryza sativae0
- Treatment
- exogenous expression of anti-apoptotic genese0
- Gene
- Hsp70e0
- Outcome
- salinity tolerancee0
- Direction
- improvese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous expression of anti-apoptotic genes from diverse origins, AtBAG4 (Arabidopsis), Hsp70 (Citrus tristeza virus) and p35 (Baculovirus), significantly improves salinity tolerance in rice at the whole plant level”
Claim · model-written summary
Expression of p35 significantly improved rice salinity tolerance.
- Taxon
- riceOryza sativae0
- Treatment
- exogenous expression of anti-apoptotic genese0
- Gene
- p35e0
- Outcome
- salinity tolerancee0
- Direction
- improvese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous expression of anti-apoptotic genes from diverse origins, AtBAG4 (Arabidopsis), Hsp70 (Citrus tristeza virus) and p35 (Baculovirus), significantly improves salinity tolerance in rice at the whole plant level”
Claim · model-written summary
Salinity-treated transgenic rice showed improved photosynthesis, membrane integrity and ion and ROS maintenance.
- Taxon
- riceOryza sativae0
- Treatment
- salinity treatmente0
- Outcome
- improved photosynthesis, membrane integrity, ion and ROS maintenance systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“transgenic rice expressing each of the anti-apoptotic genes subjected to salinity treatment demonstrated traits associated with tolerant varieties including, improved photosynthesis, membrane integrity, ion and ROS maintenance systems, growth rate, and yield components”
Claim · model-written summary
Salinity-treated transgenic rice showed improved growth rate and yield components.
- Taxon
- riceOryza sativae0
- Treatment
- salinity treatmente0
- Outcome
- growth rate, and yield componentse0
- Direction
- improvede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“transgenic rice expressing each of the anti-apoptotic genes subjected to salinity treatment demonstrated traits associated with tolerant varieties including, improved photosynthesis, membrane integrity, ion and ROS maintenance systems, growth rate, and yield components”
Claim · model-written summary
The chemical composition of salinity-treated transgenic rice resembled unstressed controls.
- Taxon
- riceOryza sativat0
- Treatment
- salinity-treatede0
- Outcome
- chemical compositione0
- Comparator
- non-treated, unstressed controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the chemical composition of salinity-treated transgenic plants is reminiscent of non-treated, unstressed controls”
t0“rice”
Claim · model-written summary
Salinity caused pectin degradation in wild type and vector control rice.
- Taxon
- riceOryza sativat0
- Material
- wild type and vector control plantse0
- Treatment
- salinity treatmente0
- Outcome
- pectin degradatione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wild type and vector control plants displayed hallmark features of stress, including pectin degradation upon subjection to salinity treatment”
t0“rice”
Claim · model-written summary
The three transgenic rice groups had similar physiological and biochemical characteristics during salinity treatment.
- Taxon
- riceOryza sativat0
- Treatment
- salinity treatmente0
- Outcome
- similar physiological and biochemical characteristicse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“transgenic plants expressing the anti-apoptotic genes assessed in this study displayed similar physiological and biochemical characteristics during salinity treatment”
t0“rice”
Claim · model-written summary
Anti-apoptotic genes were interpreted to maintain whole-plant metabolic activity and cellular survival conditions.
- Taxon
- riceOryza sativat0
- Gene
- anti-apoptotic genese0
- Outcome
- maintenance of metabolic activitye0
- Qualifier
- favorable conditions for cellular survivale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“anti-apoptotic genes facilitate maintenance of metabolic activity at the whole plant level to create favorable conditions for cellular survival”
t0“rice”
The same questions in other papers
transgenic · tolerance: abiotic · Oryza sativa (rice)Positive and negative results
8 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
6 papers more in this group
See all 10 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.