Abstract
Drought is one of the critical factors limiting tree growth and survival. Clarifying the adaptation to drought will facilitate the cultivation of drought-tolerant varieties. Metabolites, as direct signatures of biochemical functions, can uncover the biochemical pathways involved in drought responses. Here, we investigated the physiological and metabolic responses of drought-tolerant Populus simonii and drought-susceptible Populus deltoides cv. 'Danhong' to drought. Under drought conditions, P. simonii grew better and had a higher photosynthetic rate than P. deltoides cv. 'Danhong'. Global untargeted metabolite profiling was analyzed using gas chromatography time-of-flight mass spectrometry system. A total of 69 and 53 differentially accumulated metabolites were identified in drought-stressed P. simonii and P. deltoides cv. 'Danhong', respectively. The metabolisms of carbohydrate, amino acid, lipid and energy were involved in the drought responses common to both poplar species. The citric acid cycle was significantly inhibited to conserve energy, whereas multiple carbohydrates acting as osmolytes and osmoprotectants were induced to alleviate the adverse effects of drought stress. Unlike P. deltoides cv. 'Danhong', P. simonii underwent a specific metabolic reprogramming that enhanced non-enzymatic antioxidants, coordinated the cellular carbon/nitrogen balance and regulated wax biosynthesis. These results provide a reference for characterizing the mechanisms involved in poplar response to drought and for enhancing the drought tolerance of forest trees.
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Claims 10
Claim · model-written summary
Under drought, P. simonii grew better than P. deltoides cv. Danhong.
- Taxon
- P. simonii
Populus simoniie1 - Treatment
- droughte1
- Outcome
- grew bettere1
- Direction
- bettere1
- Comparator
- P. deltoides cv. 'Danhong'e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“metabolic responses to drought in tolerant and susceptible poplar species”
e1“Under drought conditions, P. simonii grew better and had a higher photosynthetic rate than P. deltoides cv. 'Danhong'”
Claim · model-written summary
Under drought, P. simonii had a higher photosynthetic rate than P. deltoides cv. Danhong.
- Taxon
- P. simoniiPopulus simoniie1
- Treatment
- droughte1
- Outcome
- photosynthetic ratee1
- Direction
- highere1
- Comparator
- P. deltoides cv. 'Danhong'e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“metabolic responses to drought in tolerant and susceptible poplar species”
e1“Under drought conditions, P. simonii grew better and had a higher photosynthetic rate than P. deltoides cv. 'Danhong'”
Claim · model-written summary
In drought-stressed P. simonii, 69 metabolites were differentially accumulated.
- Taxon
- P. simoniiPopulus simoniie2
- Treatment
- drought-stressede2
- Outcome
- differentially accumulated metabolitese2
- Value
- 69e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“metabolic responses to drought in tolerant and susceptible poplar species”
e2“A total of 69 and 53 differentially accumulated metabolites were identified in drought-stressed P. simonii and P. deltoides cv. 'Danhong', respectively”
Claim · model-written summary
In drought-stressed P. deltoides cv. 'Danhong', 53 metabolites were differentially accumulated.
- Taxon
- P. deltoides cv. 'Danhong'
Populus deltoidese2 - Treatment
- drought-stressede2
- Outcome
- differentially accumulated metabolitese2
- Value
- 53e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“metabolic responses to drought in tolerant and susceptible poplar species”
e2“A total of 69 and 53 differentially accumulated metabolites were identified in drought-stressed P. simonii and P. deltoides cv. 'Danhong', respectively”
Claim · model-written summary
Carbohydrate, amino acid, lipid and energy metabolism were involved in the drought responses common to both poplar species.
- Outcome
- metabolisms of carbohydrate, amino acid, lipid and energye3
- Qualifier
- involved in the drought responses common to both poplar speciese3
PopulusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“metabolic responses to drought in tolerant and susceptible poplar species”
e3“The metabolisms of carbohydrate, amino acid, lipid and energy were involved in the drought responses common to both poplar species”
Claim · model-written summary
Under drought, the citric acid cycle was inhibited in poplar to conserve energy.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“metabolic responses to drought in tolerant and susceptible poplar species”
e3“The metabolisms of carbohydrate, amino acid, lipid and energy were involved in the drought responses common to both poplar species”
e4“The citric acid cycle was significantly inhibited to conserve energy”
Claim · model-written summary
Under drought stress, multiple carbohydrates acting as osmolytes and osmoprotectants were induced in poplar.
- Treatment
- drought stresse5
- Outcome
- carbohydrates acting as osmolytes and osmoprotectantse5
- Direction
- inducede5
- Qualifier
- to alleviate the adverse effects of drought stresse5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“metabolic responses to drought in tolerant and susceptible poplar species”
e5“multiple carbohydrates acting as osmolytes and osmoprotectants were induced to alleviate the adverse effects of drought stress”
Claim · model-written summary
Under drought, P. simonii enhanced non-enzymatic antioxidants, unlike P. deltoides cv. 'Danhong'.
- Taxon
- P. simoniiPopulus simoniie6
- Treatment
- droughte1
- Outcome
- non-enzymatic antioxidantse6
- Direction
- enhancede6
- Comparator
- P. deltoides cv. 'Danhong'e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under drought conditions, P. simonii grew better and had a higher photosynthetic rate than P. deltoides cv. 'Danhong'”
e6“Unlike P. deltoides cv. 'Danhong', P. simonii underwent a specific metabolic reprogramming that enhanced non-enzymatic antioxidants, coordinated the cellular carbon/nitrogen balance and regulated wax biosynthesis”
Claim · model-written summary
Under drought, P. simonii coordinated the cellular carbon/nitrogen balance, unlike P. deltoides cv. 'Danhong'.
- Taxon
- P. simoniiPopulus simoniie6
- Treatment
- droughte1
- Outcome
- cellular carbon/nitrogen balancee6
- Direction
- coordinatede6
- Comparator
- P. deltoides cv. 'Danhong'e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under drought conditions, P. simonii grew better and had a higher photosynthetic rate than P. deltoides cv. 'Danhong'”
e6“Unlike P. deltoides cv. 'Danhong', P. simonii underwent a specific metabolic reprogramming that enhanced non-enzymatic antioxidants, coordinated the cellular carbon/nitrogen balance and regulated wax biosynthesis”
Claim · model-written summary
Under drought, P. simonii regulated wax biosynthesis, unlike P. deltoides cv. 'Danhong'.
- Taxon
- P. simoniiPopulus simoniie6
- Treatment
- droughte1
- Outcome
- wax biosynthesise6
- Direction
- regulatede6
- Comparator
- P. deltoides cv. 'Danhong'e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under drought conditions, P. simonii grew better and had a higher photosynthetic rate than P. deltoides cv. 'Danhong'”
e6“Unlike P. deltoides cv. 'Danhong', P. simonii underwent a specific metabolic reprogramming that enhanced non-enzymatic antioxidants, coordinated the cellular carbon/nitrogen balance and regulated wax biosynthesis”
The same questions in other papers
drought · physiology: photosynthesis · Populus simoniiPositive and negative results
1 in the opposite direction
- negative
drought · molecular: metabolites · Populus (poplar)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
2 papers more in this group
See all 6 papers →drought · physiology: osmolytes · Populus (poplar)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.