Comprehensive Analysis of the GRAS Gene Family in Paulownia fortunei and the Response of DELLA Proteins to Paulownia Witches’ Broom
Yixiao Li, Yabing Cao, Yujie Fan, Guoqiang Fan
TL;DR
This study explores the GRAS gene family in Paulownia fortunei and how DELLA proteins respond to a plant disease called Paulownia witches’ broom.
Contribution
The study identifies PfGRAS12 as a DELLA-containing gene that responds to disease and gibberellin treatment in Paulownia.
Findings
79 PfGRAS genes were identified and grouped into 11 categories using bioinformatics.
PfGRAS12 showed significant response to PaWB infection and gibberellin treatment, with elongated internodes observed.
PfGRAS12 interacts with PfJAZ3 in the nucleus, as confirmed by Y2H and BiFC assays.
Abstract
The GRAS (GAI\RGA\SCL) gene family encodes plant-specific transcription factors that play crucial roles in plant growth and development, stress tolerance, and hormone network regulation. Plant dwarfing symptom is mainly regulated by DELLA proteins of the GRAS gene subfamily. In this study, the association between the GRAS gene family and Paulownia witches’ broom (PaWB) was investigated. A total of 79 PfGRAS genes were identified using bioinformatics methods and categorized into 11 groups based on amino acid sequences. Tandem duplication and fragment duplication were found to be the main modes of amplification of the PfGRAS gene family. Gene structure analysis showed that more than 72.1% of the PfGRASs had no introns. The genes PfGRAS12/18/58 also contained unique DELLA structural domains; only PfGRAS12, which showed significant response to PaWB phytoplasma infection in stems, showed…
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Taxonomy
TopicsHuman Rights and Immigration · Labor Law and Work Dynamics · Employment, Labor, and Gender Studies