Insights to the superoxide dismutase genes and its roles in Hevea brasiliensis under abiotic stress
The superoxide dismutase (SOD) protein significantly influences the development and growth of plants and their reaction to abiotic stresses. However, little is known about the characteristics of rubber tree SOD genes and their expression changes under abiotic stresses. The present study recognized 1...
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Published in | 3 Biotech Vol. 12; no. 10; p. 274 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Cham
Springer International Publishing
01.10.2022
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | The superoxide dismutase (SOD) protein significantly influences the development and growth of plants and their reaction to abiotic stresses. However, little is known about the characteristics of rubber tree
SOD
genes and their expression changes under abiotic stresses. The present study recognized 11
SOD
genes in the rubber tree genome, including 7 Cu/ZnSODs, 2 MnSODs, and 2 FeSODs. Except for
HbFSD1
,
SOD
s were scattered on five chromosomes. The phylogenetic analysis of SOD proteins in rubber trees and a few other plants demonstrated that the SOD proteins contained three major subgroups. Moreover, the genes belonging to the same clade contained similar gene structures, which confirmed their classification further. The extension of the
SOD
gene family in the rubber tree was mainly induced by the segmental duplication events. The
cis
-acting components analysis showed that
HbSOD
s were utilized in many biological procedures. The transcriptomics data indicated that the phosphorylation of the C-terminal domain of RNA polymerase II might control the cold response genes through the CBF pathway and activate the SOD system to respond to cold stress. The qRT-PCR results showed that the expression of
HbCSD1
was significantly downregulated under drought and salt stresses, which might dominate the adaption capability to different stresses. Additionally, salt promoted the expression levels of
HbMSD1
and
HbMSD
2, exhibiting their indispensable role in the salinity reaction. The study results will provide a theoretical basis for deep research on
HbSOD
s in rubber trees. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2190-572X 2190-5738 |
DOI: | 10.1007/s13205-022-03328-7 |