Identification and Analysis of a CPYC-Type Glutaredoxin Associated with Stress Response in Rubber Trees

Glutaredoxins (GRXs) are a class of small oxidoreductases which modulate various biological processes in plants. Here, we isolated a GRX gene from the rubber tree (Hevea brasiliensis Müll. Arg.), named as HbSRGRX1, which encoded 107 amino acid residues with a CPYC active site. Phylogenetic analysis...

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Bibliographic Details
Published in:Forests 2019-02, Vol.10 (2), p.158
Main Authors: Yuan, Kun, Guo, Xiuli, Feng, Chengtian, Hu, Yiyu, Liu, Jinping, Wang, Zhenhui
Format: Article
Language:English
Subjects:
Amino acids
Binding sites
Biological activity
Cloning
defense response
expression
Flowers
Genes
Glutaredoxin
Hormones
Hydrogen peroxide
Localization
Low temperature resistance
Phylogenetics
Phylogeny
Proteins
Rubber
rubber tree
Rubber trees
subcellular localization
tapping panel dryness
Tobacco
Trees
Wounding
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Summary:Glutaredoxins (GRXs) are a class of small oxidoreductases which modulate various biological processes in plants. Here, we isolated a GRX gene from the rubber tree (Hevea brasiliensis Müll. Arg.), named as HbSRGRX1, which encoded 107 amino acid residues with a CPYC active site. Phylogenetic analysis displayed that HbSRGRX1 was more correlated with GRXs from Manihot esculenta Crantz. and Ricinus communis L. HbSRGRX1 was localized in the nuclei of tobacco cells, and its transcripts were preferentially expressed in male flowers and in the high-yield variety Reyan 7-33-97 with strong resistance against cold. The expression levels of HbSRGRX1 significantly decreased in tapping panel dryness (TPD) trees. Furthermore, HbSRGRX1 was regulated by wounding, hydrogen peroxide (H2O2), and multiple hormones. Altogether, these results suggest important roles of HbSRGRX1 in plant development and defense response to TPD and multiple stresses.
ISSN:1999-4907
1999-4907
DOI:10.3390/f10020158