Comparison of Effect of Brassinosteroid and Gibberellin Biosynthesis Inhibitors on Growth of Rice Seedlings
Brassinosteroid (BR) and gibberellin (GA) are two predominant plant hormones that regulate plant cell elongation. Mutants disrupt the biosynthesis of these hormones and display different degrees of dwarf phenotypes in rice. Although the role of each plant hormone in promoting the longitudinal growth...
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doaj-d926880f806544fd84d120fd953068402020-11-25T00:45:55ZengElsevierRice Science1672-63082016-01-01231515510.1016/j.rsci.2016.01.006Comparison of Effect of Brassinosteroid and Gibberellin Biosynthesis Inhibitors on Growth of Rice SeedlingsTadashi MatusmotoKazuhiro YamadaYuko YoshizawaKeimei OhBrassinosteroid (BR) and gibberellin (GA) are two predominant plant hormones that regulate plant cell elongation. Mutants disrupt the biosynthesis of these hormones and display different degrees of dwarf phenotypes in rice. Although the role of each plant hormone in promoting the longitudinal growth of plants has been extensively studied using genetic methods, their relationship is still poorly understood. In this study, we used two specific inhibitors targeting BR and GA biosynthesis to investigate the roles of BR and GA in growth of rice seedlings. Yucaizol, a specific inhibitor of BR biosynthesis, and Trinexapac-ethyl, a commercially available inhibitor of GA biosynthesis, were used. The effect of Yucaizol on rice seedlings indicated that Yucaizol significantly retarded stem elongation. The IC50 value was found to be approximately 0.8 μmol/L. Yucaizol also induced small leaf angle phenocopy in rice seedlings, similarly to BR-deficient rice, while Trinexapac-ethyl did not. When Yucaizol combined with Trinexapac-ethyl was applied to the rice plants, the mixture of these two inhibitors retarded stem elongation of rice at lower doses. Our results suggest that the use of a BR biosynthesis inhibitor combined with a GA biosynthesis inhibitor may be useful in the development of new technologies for controlling rice plant height.http://www.sciencedirect.com/science/article/pii/S167263081600007Xbrassinosteroidgibberellinplant hormoneplant growth regulatorrice |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Tadashi Matusmoto Kazuhiro Yamada Yuko Yoshizawa Keimei Oh |
spellingShingle |
Tadashi Matusmoto Kazuhiro Yamada Yuko Yoshizawa Keimei Oh Comparison of Effect of Brassinosteroid and Gibberellin Biosynthesis Inhibitors on Growth of Rice Seedlings Rice Science brassinosteroid gibberellin plant hormone plant growth regulator rice |
author_facet |
Tadashi Matusmoto Kazuhiro Yamada Yuko Yoshizawa Keimei Oh |
author_sort |
Tadashi Matusmoto |
title |
Comparison of Effect of Brassinosteroid and Gibberellin Biosynthesis Inhibitors on Growth of Rice Seedlings |
title_short |
Comparison of Effect of Brassinosteroid and Gibberellin Biosynthesis Inhibitors on Growth of Rice Seedlings |
title_full |
Comparison of Effect of Brassinosteroid and Gibberellin Biosynthesis Inhibitors on Growth of Rice Seedlings |
title_fullStr |
Comparison of Effect of Brassinosteroid and Gibberellin Biosynthesis Inhibitors on Growth of Rice Seedlings |
title_full_unstemmed |
Comparison of Effect of Brassinosteroid and Gibberellin Biosynthesis Inhibitors on Growth of Rice Seedlings |
title_sort |
comparison of effect of brassinosteroid and gibberellin biosynthesis inhibitors on growth of rice seedlings |
publisher |
Elsevier |
series |
Rice Science |
issn |
1672-6308 |
publishDate |
2016-01-01 |
description |
Brassinosteroid (BR) and gibberellin (GA) are two predominant plant hormones that regulate plant cell elongation. Mutants disrupt the biosynthesis of these hormones and display different degrees of dwarf phenotypes in rice. Although the role of each plant hormone in promoting the longitudinal growth of plants has been extensively studied using genetic methods, their relationship is still poorly understood. In this study, we used two specific inhibitors targeting BR and GA biosynthesis to investigate the roles of BR and GA in growth of rice seedlings. Yucaizol, a specific inhibitor of BR biosynthesis, and Trinexapac-ethyl, a commercially available inhibitor of GA biosynthesis, were used. The effect of Yucaizol on rice seedlings indicated that Yucaizol significantly retarded stem elongation. The IC50 value was found to be approximately 0.8 μmol/L. Yucaizol also induced small leaf angle phenocopy in rice seedlings, similarly to BR-deficient rice, while Trinexapac-ethyl did not. When Yucaizol combined with Trinexapac-ethyl was applied to the rice plants, the mixture of these two inhibitors retarded stem elongation of rice at lower doses. Our results suggest that the use of a BR biosynthesis inhibitor combined with a GA biosynthesis inhibitor may be useful in the development of new technologies for controlling rice plant height. |
topic |
brassinosteroid gibberellin plant hormone plant growth regulator rice |
url |
http://www.sciencedirect.com/science/article/pii/S167263081600007X |
work_keys_str_mv |
AT tadashimatusmoto comparisonofeffectofbrassinosteroidandgibberellinbiosynthesisinhibitorsongrowthofriceseedlings AT kazuhiroyamada comparisonofeffectofbrassinosteroidandgibberellinbiosynthesisinhibitorsongrowthofriceseedlings AT yukoyoshizawa comparisonofeffectofbrassinosteroidandgibberellinbiosynthesisinhibitorsongrowthofriceseedlings AT keimeioh comparisonofeffectofbrassinosteroidandgibberellinbiosynthesisinhibitorsongrowthofriceseedlings |
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