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Over Expression of Mango MiGA2ox12 in Tobacco Reduced Plant Height by Reducing GA 1 and GA 4 Content
The regulation of gibberellic acid 2-oxidase ( ) gene expression represents a critical mechanism in the modulation of endogenous gibberellic acids (GAs) levels, thereby exerting an influence on plant height. In this context, we conducted a comprehensive genome-wide analysis of the GA2ox gene family...
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Published in: | International journal of molecular sciences 2024-11, Vol.25 (22) |
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Main Authors: | , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Online Access: | Get full text |
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Summary: | The regulation of gibberellic acid 2-oxidase (
) gene expression represents a critical mechanism in the modulation of endogenous gibberellic acids (GAs) levels, thereby exerting an influence on plant height. In this context, we conducted a comprehensive genome-wide analysis of the GA2ox gene family in mango (
L.), a species of significant economic importance, with the aim of identifying potential candidate genes for mango dwarf breeding. Our findings delineated the presence of at least 14 members within the
gene family in the mango genome, which were further categorized into three subfamilies: C
-GA2ox-I, C
-GA2ox-II, and C
-GA2ox-I. Notably,
a member of the C
-GA2ox-II subfamily, exhibited substantial expression across various tissues, including roots, bark, leaves, and flowers. Through overexpression of the
gene in tobacco, a distinct dwarf phenotype was observed alongside reduced levels of GA
and GA
, while the knockout line exhibited contrasting traits. This provides evidence suggesting that
may exert control over plant height by modulating GA content. Consequently, the
gene emerges as a promising candidate for facilitating advancements in mango dwarfing techniques. |
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ISSN: | 1422-0067 |