Abstract
This paper studied the effects of cobalt on the polyamine content, reactive oxygen level, anti-oxidative enzyme activity, and cell membrane permeability of soybean seedling's leaf under drought stress, and discussed the mechanisms of these effects. The results showed that under drought stress, cobalt at its concentration of 30 micromol x L(-1) could significantly inhibit the production of ethylene. This concentration of cobalt had no significant effects on the contents of MDA and chlorophyll when the drought stress lasted 0 to approximately 12 days, but significantly restrained the increase of reactive oxygen level, hampered the decline of putrescine, spermidine and spermine contents and anti-oxidative enzyme activities,and thus,inhibited the accumulation of MDA and alleviated the reduction of chlorophyll content when the stress lasted 15 to approximately 21 days. It could be concluded that when soybean seedling's leaf was deeply stressed and damaged under drought stress, cobalt could alleviate the decline of polyamine content and anti-oxidative enzyme activity,and hence, alleviate the increment of reactive oxygen level and cell membrane's damage degree through inhibiting the production of ethylene, and exerted its protective effects on the soybean seedling's leaf under drought stress.
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Claims 6
Claim · model-written summary
Cobalt significantly inhibited ethylene production under drought stress.
- Taxon
- soybean
Glycine maxe1 - Treatment
- cobalt at its concentration of 30 micromol x L(-1)e0
- Direction
- inhibite0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under drought stress, cobalt at its concentration of 30 micromol x L(-1) could significantly inhibit the production of ethylene”
e1“soybean seedling's leaf”
Claim · model-written summary
Cobalt had no significant effect on MDA and chlorophyll contents at 0 to approximately 12 days.
- Taxon
- soybeanGlycine maxe1
- Treatment
- cobalte7
- Direction
- no significant effectse0
- Qualifier
- 0 to approximately 12 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This concentration of cobalt had no significant effects on the contents of MDA and chlorophyll when the drought stress lasted 0 to approximately 12 days”
e1“soybean seedling's leaf”
e7“under drought stress, cobalt at its concentration of 30 micromol x L(-1) could significantly inhibit the production of ethylene”
Claim · model-written summary
Cobalt restrained reactive oxygen increase during days 15 to approximately 21.
- Taxon
- soybeanGlycine maxe1
- Treatment
- cobalte7
- Direction
- restrained the increasee0
- Qualifier
- 15 to approximately 21 dayse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly restrained the increase of reactive oxygen level”
e1“soybean seedling's leaf”
e2“when the stress lasted 15 to approximately 21 days”
e7“under drought stress, cobalt at its concentration of 30 micromol x L(-1) could significantly inhibit the production of ethylene”
Claim · model-written summary
Cobalt hampered decline of three polyamines and antioxidative enzyme activities.
- Taxon
- soybeanGlycine maxe1
- Treatment
- cobalte7
- Direction
- hampered the declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hampered the decline of putrescine, spermidine and spermine contents and anti-oxidative enzyme activities”
e1“soybean seedling's leaf”
e7“under drought stress, cobalt at its concentration of 30 micromol x L(-1) could significantly inhibit the production of ethylene”
Claim · model-written summary
Cobalt inhibited MDA accumulation.
- Taxon
- soybeanGlycine maxe1
- Treatment
- cobalte7
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inhibited the accumulation of MDA”
e1“soybean seedling's leaf”
e7“under drought stress, cobalt at its concentration of 30 micromol x L(-1) could significantly inhibit the production of ethylene”
Claim · model-written summary
Cobalt alleviated chlorophyll decline.
- Taxon
- soybeanGlycine maxe1
- Treatment
- cobalte7
- Direction
- alleviated the reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“alleviated the reduction of chlorophyll content”
e1“soybean seedling's leaf”
e7“under drought stress, cobalt at its concentration of 30 micromol x L(-1) could significantly inhibit the production of ethylene”
The same questions in other papers
cobalt atom · physiology: hormones · Glycine max (soybean)Results differ
1 in the opposite direction
- no effect
cobalt atom · physiology: pigments · Glycine max (soybean)Results differ
2 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
1 paper more in this group
See all 5 papers →cobalt atom · physiology: oxidative · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
- 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.