Abstract
Productivity of sunflower (Helianthus annuus L.), the fourth most important oilseed crop, is strongly dependent on water availability. To search for genetic variation in the ability of roots to grow into drying soil, 16 sunflower lines were screened in 2 years field experiments by imposing drought stress at flowering stage. The results differentiated RGK 21 and BGK 329 as the most sensitive and tolerant lines respectively. The time course physiological assay of these lines at seedling stage revealed roots as the most affected organ 6 days after imposing drought stress. A proteomics approach was adapted for investigating of differential changes in roots proteome under contrasting moisture regimes. Protein spots with significant changes in protein abundance were identified by nano LC-MS/MS. The results indicated that under drought stress relative abundance of metabolism related proteins were decreased in both sensitive and tolerant lines. Abundance of energy and disease/defence related proteins were decreased in the sensitive but increased in the tolerant line. The results indicate that changes in energy usage, water transport and ROS scavenging are important mechanisms for maintaining root growth as the soil dries.
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Claims 7
Claim · model-written summary
RGK 21 was the most drought sensitive sunflower line.
- Taxon
- sunflower
Helianthus annuuse1 - Material
- RGK 21e0
- Outcome
- most sensitivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results differentiated RGK 21 and BGK 329 as the most sensitive and tolerant lines respectively.”
e1“Productivity of sunflower (Helianthus annuus L.)”
e2“under drought stress”
Claim · model-written summary
BGK 329 was the most drought tolerant sunflower line.
- Taxon
- sunflowerHelianthus annuuse1
- Material
- BGK 329e0
- Outcome
- tolerante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results differentiated RGK 21 and BGK 329 as the most sensitive and tolerant lines respectively.”
e1“Productivity of sunflower (Helianthus annuus L.)”
e2“under drought stress”
Claim · model-written summary
Roots were the most affected organ six days after drought stress at seedling stage.
- Taxon
- sunflowerHelianthus annuuse1
- Organ / stage
- rootse0
- Treatment
- drought stresse0
- Outcome
- most affected organe0
- Value
- 6 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The time course physiological assay of these lines at seedling stage revealed roots as the most affected organ 6 days after imposing drought stress.”
e1“Productivity of sunflower (Helianthus annuus L.)”
e2“under drought stress”
Claim · model-written summary
Drought decreased metabolism related protein abundance in both lines.
- Taxon
- sunflowerHelianthus annuuse1
- Treatment
- drought stresse0
- Outcome
- relative abundance of metabolism related proteinse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results indicated that under drought stress relative abundance of metabolism related proteins were decreased in both sensitive and tolerant lines.”
e1“Productivity of sunflower (Helianthus annuus L.)”
e2“under drought stress”
Claim · model-written summary
Drought decreased energy and disease/defence protein abundance in the sensitive line.
- Taxon
- sunflowerHelianthus annuuse1
- Material
- sensitivee0
- Treatment
- drought stresse2
- Outcome
- Abundance of energy and disease/defence related proteinse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Abundance of energy and disease/defence related proteins were decreased in the sensitive but increased in the tolerant line.”
e1“Productivity of sunflower (Helianthus annuus L.)”
e2“under drought stress”
Claim · model-written summary
Drought increased energy and disease/defence protein abundance in the tolerant line.
- Taxon
- sunflowerHelianthus annuuse1
- Material
- tolerante0
- Treatment
- drought stresse2
- Outcome
- Abundance of energy and disease/defence related proteinse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Abundance of energy and disease/defence related proteins were decreased in the sensitive but increased in the tolerant line.”
e1“Productivity of sunflower (Helianthus annuus L.)”
e2“under drought stress”
Claim · model-written summary
Changes in energy usage, water transport and ROS scavenging were interpreted as important for root growth as soil dries.
- Taxon
- sunflowerHelianthus annuuse1
- Outcome
- maintaining root growthe0
- Qualifier
- changes in energy usage, water transport and ROS scavenginge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results indicate that changes in energy usage, water transport and ROS scavenging are important mechanisms for maintaining root growth as the soil dries.”
e1“Productivity of sunflower (Helianthus annuus L.)”
e2“under drought stress”
The same questions in other papers
drought · disease · Helianthus annuus (common sunflower)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
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.