Abstract
L.) drought stress tolerance, we conducted a comprehensive physiological, anatomical, biochemical and transcriptome analyses of three tobacco cultivars (i.e., HongHuaDaJinYuan (H), NC55 (N) and Yun Yan-100 (Y)) seedlings that had been exposed to drought stress. As a result, H maintained higher growth in term of less reduction in plant fresh weight, dry weight and chlorophyll content as compared with N and Y. Anatomical studies unveiled that drought stress had little effect on H by maintaining proper leaf anatomy while there were significant changes in the leaf anatomy of N and Y. Similarly, H among the three varieties was the least affected variety under drought stress, with more proline content accumulation and a powerful antioxidant defense system, which mitigates the negative impacts of reactive oxygen species. The transcriptomic analysis showed that the differential genes expression between HongHuaDaJinYuan, NC55 and Yun Yan-100 were enriched in the functions of plant hormone signal transduction, starch and sucrose metabolism, and arginine and proline metabolism. Compared to N and Y, the differentially expressed genes of H displayed enhanced expression in the corresponding pathways under drought stress. Together, our findings offer insights that H was more tolerant than the other two varieties, as evidenced at physiological, biochemical, anatomical and molecular level. These findings can help us to enhance our understanding of the molecular mechanisms through the networks of various metabolic pathways mediating drought stress adaptation in tobacco.
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Claims 9
Claim · model-written summary
Under drought, cultivar HongHuaDaJinYuan showed less reduction in fresh weight, dry weight and chlorophyll content than NC55 and Yun Yan-100.
- Taxon
- tobacco
Nicotiana tabacume0 - Material
- HongHuaDaJinYuane0
- Treatment
- drought stresse0
- Outcome
- reduction in plant fresh weight, dry weight and chlorophyll contente1
- Direction
- less reductione1
- Comparator
- N and Ye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three tobacco cultivars (i.e., HongHuaDaJinYuan (H), NC55 (N) and Yun Yan-100 (Y)) seedlings that had been exposed to drought stress”
e1“H maintained higher growth in term of less reduction in plant fresh weight, dry weight and chlorophyll content as compared with N and Y”
Claim · model-written summary
Drought stress had little effect on leaf anatomy of cultivar H.
- Taxon
- tobaccoNicotiana tabacume0
- Material
- He2
- Treatment
- drought stresse2
- Outcome
- leaf anatomye2
- Direction
- little effecte2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three tobacco cultivars (i.e., HongHuaDaJinYuan (H), NC55 (N) and Yun Yan-100 (Y)) seedlings that had been exposed to drought stress”
e2“Anatomical studies unveiled that drought stress had little effect on H by maintaining proper leaf anatomy while there were significant changes in the leaf anatomy of N and Y”
Claim · model-written summary
Drought stress caused significant changes in leaf anatomy of cultivars N and Y.
- Taxon
- tobaccoNicotiana tabacume0
- Material
- N and Ye2
- Treatment
- drought stresse2
- Outcome
- leaf anatomye2
- Direction
- significant changese2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three tobacco cultivars (i.e., HongHuaDaJinYuan (H), NC55 (N) and Yun Yan-100 (Y)) seedlings that had been exposed to drought stress”
e2“Anatomical studies unveiled that drought stress had little effect on H by maintaining proper leaf anatomy while there were significant changes in the leaf anatomy of N and Y”
Claim · model-written summary
Cultivar H under drought accumulated more proline.
- Taxon
- tobaccoNicotiana tabacume0
- Material
- He3
- Treatment
- drought stresse3
- Outcome
- proline contente3
- Direction
- moree3
- Comparator
- three varietiese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three tobacco cultivars (i.e., HongHuaDaJinYuan (H), NC55 (N) and Yun Yan-100 (Y)) seedlings that had been exposed to drought stress”
e3“H among the three varieties was the least affected variety under drought stress, with more proline content accumulation and a powerful antioxidant defense system, which mitigates the negative impacts of reactive oxygen species”
Claim · model-written summary
Cultivar H under drought had a powerful antioxidant defense system.
- Taxon
- tobaccoNicotiana tabacume0
- Material
- He3
- Treatment
- drought stresse3
- Outcome
- antioxidant defense systeme3
- Direction
- powerfule3
- Comparator
- three varietiese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three tobacco cultivars (i.e., HongHuaDaJinYuan (H), NC55 (N) and Yun Yan-100 (Y)) seedlings that had been exposed to drought stress”
e3“H among the three varieties was the least affected variety under drought stress, with more proline content accumulation and a powerful antioxidant defense system, which mitigates the negative impacts of reactive oxygen species”
Claim · model-written summary
The antioxidant defense system of cultivar H is suggested to mitigate the negative impacts of reactive oxygen species under drought.
- Taxon
- tobaccoNicotiana tabacume0
- Outcome
- negative impacts of reactive oxygen speciese3
- Qualifier
- a powerful antioxidant defense systeme3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three tobacco cultivars (i.e., HongHuaDaJinYuan (H), NC55 (N) and Yun Yan-100 (Y)) seedlings that had been exposed to drought stress”
e3“H among the three varieties was the least affected variety under drought stress, with more proline content accumulation and a powerful antioxidant defense system, which mitigates the negative impacts of reactive oxygen species”
Claim · model-written summary
Differentially expressed genes among the three tobacco cultivars are enriched in plant hormone signal transduction, starch and sucrose metabolism, and arginine and proline metabolism.
- Taxon
- tobaccoNicotiana tabacume0
- Outcome
- plant hormone signal transduction, starch and sucrose metabolism, and arginine and proline metabolisme4
- Direction
- enrichede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three tobacco cultivars (i.e., HongHuaDaJinYuan (H), NC55 (N) and Yun Yan-100 (Y)) seedlings that had been exposed to drought stress”
e4“The transcriptomic analysis showed that the differential genes expression between HongHuaDaJinYuan, NC55 and Yun Yan-100 were enriched in the functions of plant hormone signal transduction, starch and sucrose metabolism, and arginine and proline metabolism”
Claim · model-written summary
Under drought, differentially expressed genes of cultivar H show enhanced expression in the corresponding pathways compared with N and Y.
- Taxon
- tobaccoNicotiana tabacume0
- Material
- He5
- Treatment
- drought stresse5
- Gene
- differentially expressed genese5
- Outcome
- expression in the corresponding pathwayse5
- Direction
- enhancede5
- Comparator
- N and Ye5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three tobacco cultivars (i.e., HongHuaDaJinYuan (H), NC55 (N) and Yun Yan-100 (Y)) seedlings that had been exposed to drought stress”
e5“Compared to N and Y, the differentially expressed genes of H displayed enhanced expression in the corresponding pathways under drought stress”
Claim · model-written summary
Cultivar H is more drought tolerant than the other two tobacco cultivars at physiological, biochemical, anatomical and molecular levels.
- Taxon
- tobaccoNicotiana tabacume0
- Material
- He6
- Treatment
- drought stresse0
- Outcome
- Drought Tolerancet0
- Direction
- more tolerante6
- Comparator
- the other two varietiese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three tobacco cultivars (i.e., HongHuaDaJinYuan (H), NC55 (N) and Yun Yan-100 (Y)) seedlings that had been exposed to drought stress”
t0“Drought Tolerance in Nicotiana tabacum L.”
e6“H was more tolerant than the other two varieties, as evidenced at physiological, biochemical, anatomical and molecular level”
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See all 16 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.