Abstract
Using potato(Solanum tuberosum) seedlings as research objects,effects of different treatments of fulvic acid and drought stress(CK,10% PEG,0.01% FA+10 % PEG,0.03% FA+10% PEG,0.05% FA+10% PEG,and 0.10% FA+10% PEG) on growth and drought-resistant physiological parameters of aeroponic potato were studied.The results showed that seedling survival rate,chlorophyll content,membrane stability index,root vigor,number of procumbent stems,tuber rate and output of aeroponic potato tended to decrease,malondialdehyde(MDA) content,hydrogen peroxide(H2O2) content,proline content,soluble sugar content,catalase(CAT) activity and production rate of superoxide anion(O ·2) tended to increase,and activity of superoxide dismutase(SOD) and peroxidase(POD) increased firstly and then decreased under drought stress.Thus the growth and development of aeroponic potato seedlings were inhibited significantly under drought stress.Under the treatments of fulvic acid and drought stress,seedling survival rate,number of procumbent stems,tuber rate and output increased,while chlorophyll content,membrane stability index and root vigor still tended to decrease but their decrease rate was smaller than that under treatment of single drought stress;MDA content,SOD activity and POD activity increased firstly and then decreased;Proline content,soluble sugar content,H2O2 content and catalase(CAT) activity increased,in which the increase rate of H2O2 content was lower than that under the treatment of single drought stress.Therefore,application of fulvic acid could promote growth and development of aeroponic potato seedlings under drought stress,and improve overall drought resistance of plants.The resistance was significantly associated with concentration of fulvic acid.The protective effect of 0.05% FA was the most significant,but 0.10% FA even brought cooperatively injury to potato seedlings with PEG stress.
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Claims 17
Claim · model-written summary
Drought reduced seedling survival rate.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- drought stresse1
- Outcome
- seedling survival ratee0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedling survival rate,chlorophyll content,membrane stability index,root vigor,number of procumbent stems,tuber rate and output of aeroponic potato tended to decrease”
e1“fulvic acid and drought stress(CK”
Claim · model-written summary
Drought reduced chlorophyll content, membrane stability index and root vigor.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- drought stresse1
- Outcome
- chlorophyll content,membrane stability index,root vigore0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chlorophyll content,membrane stability index,root vigor,number of procumbent stems,tuber rate and output of aeroponic potato tended to decrease”
t0“potato”
e1“fulvic acid and drought stress(CK”
Claim · model-written summary
Drought reduced procumbent stem number, tuber rate, and output.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- drought stresse1
- Outcome
- number of procumbent stems,tuber rate and outpute0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“number of procumbent stems,tuber rate and output of aeroponic potato tended to decrease”
e1“fulvic acid and drought stress(CK”
Claim · model-written summary
Drought increased MDA, hydrogen peroxide and proline contents.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- drought stresse1
- Outcome
- malondialdehyde(MDA) content,hydrogen peroxide(H2O2) content,proline contente0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“malondialdehyde(MDA) content,hydrogen peroxide(H2O2) content,proline content,soluble sugar content,catalase(CAT) activity and production rate of superoxide anion(O ·2) tended to increase”
t0“potato”
e1“fulvic acid and drought stress(CK”
Claim · model-written summary
Drought increased soluble sugar content, CAT activity and superoxide anion production.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- drought stresse1
- Outcome
- soluble sugar content,catalase(CAT) activity and production rate of superoxide anion(O ·2)e0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soluble sugar content,catalase(CAT) activity and production rate of superoxide anion(O ·2) tended to increase”
t0“potato”
e1“fulvic acid and drought stress(CK”
Claim · model-written summary
Under drought, SOD and POD activities first rose and then fell.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- drought stresse0
- Outcome
- activity of superoxide dismutase(SOD) and peroxidase(POD)e0
- Direction
- increased firstly and then decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“activity of superoxide dismutase(SOD) and peroxidase(POD) increased firstly and then decreased under drought stress”
t0“potato”
Claim · model-written summary
Drought significantly inhibited potato seedling growth and development.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- drought stresse0
- Outcome
- growth and development of aeroponic potato seedlingse0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth and development of aeroponic potato seedlings were inhibited significantly under drought stress”
Claim · model-written summary
Fulvic acid plus drought increased seedling survival, procumbent stem number, tuber rate and output.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- fulvic acid and drought stresse0
- Outcome
- seedling survival rate,number of procumbent stems,tuber rate and outpute0
- Direction
- increasede0
- Comparator
- single drought stresse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the treatments of fulvic acid and drought stress,seedling survival rate,number of procumbent stems,tuber rate and output increased”
t0“potato”
e2“under treatment of single drought stress”
Claim · model-written summary
With fulvic acid under drought, chlorophyll, membrane stability and root vigor still declined, but less than with drought alone.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- fulvic acid and drought stresse1
- Outcome
- chlorophyll content,membrane stability index and root vigore0
- Direction
- decrease rate was smallere0
- Comparator
- single drought stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chlorophyll content,membrane stability index and root vigor still tended to decrease but their decrease rate was smaller than that under treatment of single drought stress”
t0“potato”
e1“fulvic acid and drought stress(CK”
Claim · model-written summary
With fulvic acid under drought, MDA, SOD and POD first rose and then fell.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- fulvic acid and drought stresse1
- Outcome
- MDA content,SOD activity and POD activitye0
- Direction
- increased firstly and then decreasede0
- Comparator
- single drought stresse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MDA content,SOD activity and POD activity increased firstly and then decreased”
t0“potato”
e1“fulvic acid and drought stress(CK”
e2“under treatment of single drought stress”
Claim · model-written summary
With fulvic acid under drought, proline, soluble sugar and hydrogen peroxide contents increased.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- fulvic acid and drought stresse1
- Outcome
- Proline content,soluble sugar content,H2O2 contente0
- Direction
- increasede0
- Comparator
- single drought stresse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Proline content,soluble sugar content,H2O2 content and catalase(CAT) activity increased”
t0“potato”
e1“fulvic acid and drought stress(CK”
e2“under treatment of single drought stress”
Claim · model-written summary
With fulvic acid under drought, catalase activity increased.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- fulvic acid and drought stresse1
- Outcome
- catalase(CAT) activitye0
- Direction
- increasede0
- Comparator
- single drought stresse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“catalase(CAT) activity increased”
t0“potato”
e1“fulvic acid and drought stress(CK”
e2“under treatment of single drought stress”
Claim · model-written summary
Hydrogen peroxide increased less with fulvic acid plus drought than with drought alone.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- fulvic acid and drought stresse1
- Outcome
- increase rate of H2O2 contente0
- Direction
- lowere0
- Comparator
- single drought stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase rate of H2O2 content was lower than that under the treatment of single drought stress”
t0“potato”
e1“fulvic acid and drought stress(CK”
Claim · model-written summary
Fulvic acid was interpreted as improving potato growth and drought resistance under drought.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- application of fulvic acide0
- Outcome
- growth and development of aeroponic potato seedlingse0
- Direction
- promotee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of fulvic acid could promote growth and development of aeroponic potato seedlings under drought stress,and improve overall drought resistance of plants”
Claim · model-written summary
Drought resistance was significantly associated with fulvic acid concentration.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- concentration of fulvic acide0
- Outcome
- resistancee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The resistance was significantly associated with concentration of fulvic acid”
t0“potato”
Claim · model-written summary
0.05% FA had the strongest protective effect.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- 0.05% FAe0
- Outcome
- protective effecte0
- Direction
- most significante0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The protective effect of 0.05% FA was the most significant”
t0“potato”
Claim · model-written summary
0.10% FA compounded PEG injury to potato seedlings.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- 0.10% FAe0
- Outcome
- injury to potato seedlingse0
- Direction
- brought cooperativelye0
- Qualifier
- with PEG stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“0.10% FA even brought cooperatively injury to potato seedlings with PEG stress”
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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.