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Open AccessArticle

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

1
Key Laboratory of Biology and Genetic Resources of Rubber Tree, Ministry of Agriculture, Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
2
Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, Tropical Agriculture and Forestry Institute, Hainan University, Haikou 570228, China
*
Author to whom correspondence should be addressed.
Forests 2019, 10(2), 158; https://doi.org/10.3390/f10020158
Received: 17 January 2019 / Revised: 6 February 2019 / Accepted: 7 February 2019 / Published: 12 February 2019
(This article belongs to the Special Issue Physiological Responses to Abiotic and Biotic Stress in Forest 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 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. View Full-Text
Keywords: glutaredoxin; subcellular localization; expression; tapping panel dryness; defense response; rubber tree glutaredoxin; subcellular localization; expression; tapping panel dryness; defense response; rubber tree
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MDPI and ACS Style

Yuan, K.; Guo, X.; Feng, C.; Hu, Y.; Liu, J.; Wang, Z. Identification and Analysis of a CPYC-Type Glutaredoxin Associated with Stress Response in Rubber Trees. Forests 2019, 10, 158.

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