Loading…
Genome-Wide Identification and Expression Profile Analysis of the Phenylalanine Ammonia-Lyase Gene Family in Hevea brasiliensis
The majority of the world's natural rubber comes from the rubber tree ( ). As a key enzyme for synthesizing phenylpropanoid compounds, phenylalanine ammonia-lyase (PAL) has a critical role in plant satisfactory growth and environmental adaptation. To clarify the characteristics of rubber tree P...
Saved in:
Published in: | International journal of molecular sciences 2024-05, Vol.25 (9), p.5052 |
---|---|
Main Authors: | , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | The majority of the world's natural rubber comes from the rubber tree (
). As a key enzyme for synthesizing phenylpropanoid compounds, phenylalanine ammonia-lyase (PAL) has a critical role in plant satisfactory growth and environmental adaptation. To clarify the characteristics of rubber tree PAL family genes, a genome-wide characterization of rubber tree
was conducted in this study. Eight
genes (
-
), which spread over chromosomes 3, 7, 8, 10, 12, 13, 14, 16, and 18, were found to be present in the genome of
. Phylogenetic analysis classified HbPALs into groups I and II, and the group I HbPALs (HbPAL1-HbPAL6) displayed similar conserved motif compositions and gene architectures. Tissue expression patterns of
quantified by quantitative real-time PCR (qPCR) proved that distinct
exhibited varying tissue expression patterns. The
promoters contained a plethora of
-acting elements that responded to hormones and stress, and the qPCR analysis demonstrated that abiotic stressors like cold, drought, salt, and H
O
-induced oxidative stress, as well as hormones like salicylic acid, abscisic acid, ethylene, and methyl jasmonate, controlled the expression of
. The majority of
were also regulated by powdery mildew, anthracnose, and
leaf fall disease infection. In addition,
,
, and
were significantly up-regulated in the bark of tapping panel dryness rubber trees relative to that of healthy trees. Our results provide a thorough comprehension of the characteristics of
genes and set the groundwork for further investigation of the biological functions of
in rubber trees. |
---|---|
ISSN: | 1422-0067 1661-6596 1422-0067 |
DOI: | 10.3390/ijms25095052 |