Abstract
Pot and water culture experiments were conducted to study the regulation effects of nitrate nitrogen on chromium toxicity to Brassica campestris L.ssp.chinensis(L.).The results showed that exogenous Cr6+ could obviously promote the chromium accumulation in B.campestris,restrain its iron uptake,and inhibit its nitrate reductase activity;while nitrate nitrogen could alleviate the inhibitory effect of Cr6+ on the iron absorption and nitrate reductase activity of B.campestris,enhance its nitrogen metabolism and vitamin C biosynthesis,and stimulate plant growth.Under the same conditions of soil chromium contamination,the increase of nitrate nitrogen promoted the transformation of exogenous Cr6+ into organic form,and the Cr6+ uptake by B.campestris.It was concluded that nitrate nitrogen could promote the plant growth and Cr6+ absorption of B.campestris,and obviously increased its Cr6+ accumulation.
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Claims 9
Claim · model-written summary
Exogenous Cr6+ promoted chromium accumulation in B. campestris
- Taxon
- B.campestris
.jpg?width=60)
Brassica rapa subsp. oleiferae1 - Treatment
- exogenous Cr6+e1
- Outcome
- chromium accumulatione1
- Direction
- promotee1
- Setting
- Pot and water culturee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Pot and water culture experiments were conducted to study the regulation effects of nitrate nitrogen on chromium toxicity to Brassica campestris L.ssp.chinensis(L.)”
e1“exogenous Cr6+ could obviously promote the chromium accumulation in B.campestris,restrain its iron uptake,and inhibit its nitrate reductase activity”
Claim · model-written summary
Exogenous Cr6+ restrained iron uptake in B. campestris
- Taxon
- B.campestrisBrassica rapa subsp. oleiferae1
- Treatment
- exogenous Cr6+e1
- Outcome
- iron uptakee1
- Direction
- restraine1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“exogenous Cr6+ could obviously promote the chromium accumulation in B.campestris,restrain its iron uptake,and inhibit its nitrate reductase activity”
Claim · model-written summary
Exogenous Cr6+ inhibited nitrate reductase activity in B. campestris
- Taxon
- B.campestrisBrassica rapa subsp. oleiferae1
- Treatment
- exogenous Cr6+e1
- Outcome
- nitrate reductase activitye1
- Direction
- inhibite1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“exogenous Cr6+ could obviously promote the chromium accumulation in B.campestris,restrain its iron uptake,and inhibit its nitrate reductase activity”
Claim · model-written summary
Nitrate nitrogen alleviated the inhibition by Cr6+ of iron absorption and nitrate reductase activity in B. campestris
- Taxon
- B.campestrisBrassica rapa subsp. oleiferae2
- Treatment
- nitrate nitrogene2
- Outcome
- iron absorption and nitrate reductase activitye2
- Direction
- alleviatee2
- Comparator
- Cr6+e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“nitrate nitrogen could alleviate the inhibitory effect of Cr6+ on the iron absorption and nitrate reductase activity of B.campestris,enhance its nitrogen metabolism and vitamin C biosynthesis,and stimulate plant growth”
Claim · model-written summary
Nitrate nitrogen enhanced nitrogen metabolism and vitamin C biosynthesis in B. campestris
- Taxon
- B.campestrisBrassica rapa subsp. oleiferae2
- Treatment
- nitrate nitrogene2
- Outcome
- nitrogen metabolism and vitamin C biosynthesise2
- Direction
- enhancee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“nitrate nitrogen could alleviate the inhibitory effect of Cr6+ on the iron absorption and nitrate reductase activity of B.campestris,enhance its nitrogen metabolism and vitamin C biosynthesis,and stimulate plant growth”
Claim · model-written summary
Nitrate nitrogen stimulated plant growth of B. campestris
- Taxon
- B.campestrisBrassica rapa subsp. oleiferae2
- Treatment
- nitrate nitrogene2
- Outcome
- plant growthe2
- Direction
- stimulatee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“nitrate nitrogen could alleviate the inhibitory effect of Cr6+ on the iron absorption and nitrate reductase activity of B.campestris,enhance its nitrogen metabolism and vitamin C biosynthesis,and stimulate plant growth”
Claim · model-written summary
Increased nitrate nitrogen promoted transformation of exogenous Cr6+ into organic form under soil chromium contamination
- Taxon
- B.campestrisBrassica rapa subsp. oleiferae3
- Treatment
- increase of nitrate nitrogene3
- Outcome
- transformation of exogenous Cr6+ into organic forme3
- Direction
- promotede3
- Setting
- soil chromium contaminatione3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Under the same conditions of soil chromium contamination,the increase of nitrate nitrogen promoted the transformation of exogenous Cr6+ into organic form,and the Cr6+ uptake by B.campestris”
Claim · model-written summary
Nitrate nitrogen promoted Cr6+ absorption by B. campestris
- Taxon
- B.campestrisBrassica rapa subsp. oleiferae4
- Treatment
- nitrate nitrogene4
- Outcome
- Cr6+ absorptione4
- Direction
- promotee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“nitrate nitrogen could promote the plant growth and Cr6+ absorption of B.campestris,and obviously increased its Cr6+ accumulation”
Claim · model-written summary
Nitrate nitrogen increased Cr6+ accumulation in B. campestris
- Taxon
- B.campestrisBrassica rapa subsp. oleiferae4
- Treatment
- nitrate nitrogene4
- Outcome
- Cr6+ accumulatione4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“nitrate nitrogen could promote the plant growth and Cr6+ absorption of B.campestris,and obviously increased its Cr6+ accumulation”
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