Effects of Brassinosteroid Associated with Auxin and Gibberellin on Apple Tree Growth and Gene Expression Patterns
Brassinosteroid is an important hormone that interacts with auxin and gibberellin to regulate plant growth and development. However, there is currently a relative lack of information regarding brassinosteroid in apple. Previous study confirmed that exogenous brassinosteroid treatments increased grow...
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doaj-b5a8949a266848eb9c089167247b37ae2021-04-02T14:26:33ZengKeAi Communications Co., Ltd.Horticultural Plant Journal2468-01412019-05-015393108Effects of Brassinosteroid Associated with Auxin and Gibberellin on Apple Tree Growth and Gene Expression PatternsLiwei Zheng0Cai Gao1Caide Zhao2Lizhi Zhang3Mingyu Han4Na An5Xiaolin Ren6College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, ChinaCollege of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, ChinaCollege of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, ChinaCollege of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, ChinaCollege of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, ChinaCollege of Life Science, Northwest A & F University, Yangling, Shaanxi 712100, China; College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China; Corresponding authors. Tel.: +86 29 87082849College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China; Corresponding authors. Tel.: +86 29 87082849Brassinosteroid is an important hormone that interacts with auxin and gibberellin to regulate plant growth and development. However, there is currently a relative lack of information regarding brassinosteroid in apple. Previous study confirmed that exogenous brassinosteroid treatments increased growth and endogenous brassinosteroid, auxin, as well as gibberellin levels of apple nursery trees. Here we succeeded to find that exogenous brassinosteroid treatments upregulated the transcript expression of auxin biosynthesis, transport, and positive signal transduction genes as well as gibberellin biosynthesis genes. In contrast, the application of exogenous brassinosteroid downregulated the expression of genes encoding negative regulators of auxin and gibberellin signal transductions. Rapid responses of several brassinosteroid-, auxin-, and gibberellin- related genes to the brassinosteroid and brassinazole treatments inferred the crosstalk of BR and IAA or GA. Furthermore, the expression levels of cell growth-related genes were also enhanced by exogenous brassinosteroid. Auxin and gibberellin treatments also influenced growth of apple tree and enhanced the expression of brassinosteroid- and cell growth-related genes. These results indicate that the growth of apple tree is regulated by the interaction between brassinosteroid, auxin, and gibberellin. Our work opened new avenues for deep portfolio of apple tree growth and laid the foundation for future studies aimed at elucidating the mechanisms regulating hormone interactions-mediated growth in apple trees. Keywords: Malus domestica, Brassinosteroid, Auxin, Gibberellin, Growth and development, Gene expressionhttp://www.sciencedirect.com/science/article/pii/S2468014119301049 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Liwei Zheng Cai Gao Caide Zhao Lizhi Zhang Mingyu Han Na An Xiaolin Ren |
spellingShingle |
Liwei Zheng Cai Gao Caide Zhao Lizhi Zhang Mingyu Han Na An Xiaolin Ren Effects of Brassinosteroid Associated with Auxin and Gibberellin on Apple Tree Growth and Gene Expression Patterns Horticultural Plant Journal |
author_facet |
Liwei Zheng Cai Gao Caide Zhao Lizhi Zhang Mingyu Han Na An Xiaolin Ren |
author_sort |
Liwei Zheng |
title |
Effects of Brassinosteroid Associated with Auxin and Gibberellin on Apple Tree Growth and Gene Expression Patterns |
title_short |
Effects of Brassinosteroid Associated with Auxin and Gibberellin on Apple Tree Growth and Gene Expression Patterns |
title_full |
Effects of Brassinosteroid Associated with Auxin and Gibberellin on Apple Tree Growth and Gene Expression Patterns |
title_fullStr |
Effects of Brassinosteroid Associated with Auxin and Gibberellin on Apple Tree Growth and Gene Expression Patterns |
title_full_unstemmed |
Effects of Brassinosteroid Associated with Auxin and Gibberellin on Apple Tree Growth and Gene Expression Patterns |
title_sort |
effects of brassinosteroid associated with auxin and gibberellin on apple tree growth and gene expression patterns |
publisher |
KeAi Communications Co., Ltd. |
series |
Horticultural Plant Journal |
issn |
2468-0141 |
publishDate |
2019-05-01 |
description |
Brassinosteroid is an important hormone that interacts with auxin and gibberellin to regulate plant growth and development. However, there is currently a relative lack of information regarding brassinosteroid in apple. Previous study confirmed that exogenous brassinosteroid treatments increased growth and endogenous brassinosteroid, auxin, as well as gibberellin levels of apple nursery trees. Here we succeeded to find that exogenous brassinosteroid treatments upregulated the transcript expression of auxin biosynthesis, transport, and positive signal transduction genes as well as gibberellin biosynthesis genes. In contrast, the application of exogenous brassinosteroid downregulated the expression of genes encoding negative regulators of auxin and gibberellin signal transductions. Rapid responses of several brassinosteroid-, auxin-, and gibberellin- related genes to the brassinosteroid and brassinazole treatments inferred the crosstalk of BR and IAA or GA. Furthermore, the expression levels of cell growth-related genes were also enhanced by exogenous brassinosteroid. Auxin and gibberellin treatments also influenced growth of apple tree and enhanced the expression of brassinosteroid- and cell growth-related genes. These results indicate that the growth of apple tree is regulated by the interaction between brassinosteroid, auxin, and gibberellin. Our work opened new avenues for deep portfolio of apple tree growth and laid the foundation for future studies aimed at elucidating the mechanisms regulating hormone interactions-mediated growth in apple trees. Keywords: Malus domestica, Brassinosteroid, Auxin, Gibberellin, Growth and development, Gene expression |
url |
http://www.sciencedirect.com/science/article/pii/S2468014119301049 |
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