In:
PLOS ONE, Public Library of Science (PLoS), Vol. 18, No. 6 ( 2023-6-14), p. e0286505-
Abstract:
Prohexadione-calcium (Pro-Ca) has been proved to play an important role in releasing abiotic stress in plants. However, there is still a lack of research on the mechanism of Pro-Ca alleviating salt stress in rice. To explore the protective effects of Pro-Ca on rice seedlings under salt stress, we investigated the effect of exogenous Pro-Ca on rice seedling under salt stress by conducting the following three treatment experiments: CK (control), S (50 mmol·L −1 NaCl saline solution) and S + Pro-Ca (50 mmol·L −1 NaCl saline solution + 100 mg·L −1 Pro-Ca). The results indicated that Pro-Ca modulated the expression of antioxidant enzyme-related genes (such as SOD2 , PXMP2 , MPV17 , E1 . 11 . 1 . 7 ). Spraying Pro-Ca under salt stress significantly increased in ascorbate peroxidase, superoxide dismutase, and peroxidase activity by 84.2%, 75.2%, and 3.5% as compared to the salt treatment, as demonstrated by an example of a 24-hour treatment. Malondialdehyde level in Pro-Ca was also dramatically decreased by 5.8%. Moreover, spraying Pro-Ca under salt stress regulated the expression of photosynthesis genes (such as PsbS , PsbD ) and chlorophyll metabolism genes ( heml , PPD ). Compared to salt stress treatment, spraying Pro-Ca under salt stress significantly increased in net photosynthetic rate by 167.2%. In addition, when rice shoots were sprayed with Pro-Ca under salt stress, the Na + concentration was considerably reduced by 17.1% compared to salt treatment. In conclusion, Pro-Ca regulates antioxidant mechanisms and photosynthesis to aid in the growth of rice seedlings under salt stress.
Type of Medium:
Online Resource
ISSN:
1932-6203
DOI:
10.1371/journal.pone.0286505
DOI:
10.1371/journal.pone.0286505.g001
DOI:
10.1371/journal.pone.0286505.g002
DOI:
10.1371/journal.pone.0286505.g003
DOI:
10.1371/journal.pone.0286505.g004
DOI:
10.1371/journal.pone.0286505.g005
DOI:
10.1371/journal.pone.0286505.g006
DOI:
10.1371/journal.pone.0286505.g007
DOI:
10.1371/journal.pone.0286505.g008
DOI:
10.1371/journal.pone.0286505.t001
DOI:
10.1371/journal.pone.0286505.s001
DOI:
10.1371/journal.pone.0286505.s002
DOI:
10.1371/journal.pone.0286505.s003
Language:
English
Publisher:
Public Library of Science (PLoS)
Publication Date:
2023
detail.hit.zdb_id:
2267670-3
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