Journal article
M. Dutt, Lamiaa M. Mahmoud, Y. Nehela, J. Grosser, N. Killiny
Plant Science, 2022
Plant Science, 2022
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APA
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Dutt, M., Mahmoud, L. M., Nehela, Y., Grosser, J., & Killiny, N. (2022). The Citrus sinensis Tiller Angle Control 1 (CsTAC1) Gene Regulates Tree Architecture in Sweet Oranges by Modulating the Endogenous Hormone Content. Plant Science.
Chicago/Turabian
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Dutt, M., Lamiaa M. Mahmoud, Y. Nehela, J. Grosser, and N. Killiny. “The Citrus Sinensis Tiller Angle Control 1 (CsTAC1) Gene Regulates Tree Architecture in Sweet Oranges by Modulating the Endogenous Hormone Content.” Plant Science (2022).
MLA
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Dutt, M., et al. “The Citrus Sinensis Tiller Angle Control 1 (CsTAC1) Gene Regulates Tree Architecture in Sweet Oranges by Modulating the Endogenous Hormone Content.” Plant Science, 2022.
BibTeX Click to copy
@article{m2022a,
title = {The Citrus sinensis Tiller Angle Control 1 (CsTAC1) Gene Regulates Tree Architecture in Sweet Oranges by Modulating the Endogenous Hormone Content.},
year = {2022},
journal = {Plant Science},
author = {Dutt, M. and Mahmoud, Lamiaa M. and Nehela, Y. and Grosser, J. and Killiny, N.}
}
Abstract
Citrus is a major fruit crop cultivated on a global scale. Citrus trees are long lived perennials with a large canopy. Understanding the genetic control of tree architecture could provide tools for breeding and selection of citrus cultivars suitable for high density planting with improved light exposure. Tree architecture is modulated by the TILLER ANGLE CONTROL 1 (TAC1) gene which plays an important role in the regulation of the shoot angle. Herein, we used CRISPR/Cas9 technology to knockout the CsTAC1 gene for the biochemical and molecular analysis of its function. Nine transgenic lines were obtained, and five edited plants were confirmed based on T7EI mismatch detection assay and Sanger sequencing. The transgenic citrus lines exhibited pleiotropic phenotypes, including differences in branch angle and stem growth. Additionally, silencing CsTAC1 led to the upregulation of the CsLAZY1 gene in two of the tested lines. Analysis of the phytohormonal profile revealed that TAC1-edited plants exhibited lower auxin contents and increased cytokinin levels in the leaves compared to the wild-type plants. The GA7 gibberellin level was enhanced in most of the edited lines. Collectively, TAC1 affects branch angle in association with hormone signals in citrus.