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Comparative analysis of drought-responsive biochemical and transcriptomic mechanisms in two Dendrobium officinale genotypes by Hui Huang; Yixue Jiao; Yan Tong; Yuhua Wang is a Engineering article available to read on EtoBox.

What is Comparative analysis of drought-responsive biochemical and transcriptomic mechanisms in two Dendrobium officinale genotypes about?

Drought stress is one of the most sever natural disaster, threatening to plant growth and global crop security. Dendrobium officinale is a drought-tolerance crop with effective defense mechanisms against drought stress, as well as an important economic plant for medicinal, cosmetic, or ornamental purposes. Revealing the regulatory mechanisms conferring drought resistance upon D. officinale is thus crucial for genetic breeding and water-saving agriculture. In this study, the biochemical and transcriptomic profiles of two D. officinale genotypes were comprehensively analyzed under three drought stress conditions. The M genotype has a relative weaker drought tolerance, as shown by withered leaves, rapidly accumulated malondialdehyde, and severely repressed expression of photosynthesis-related genes under water deficit. In the O genotype (drought-tolerant genotype), proline content, ascorbate peroxidase and catalase activities significantly increased with intensifying drought stress, showing a higher level than that in the M genotype, especially under severe drought stress. By contrast, superoxide dismutase and peroxidase activities were higher in the M genotype under moderate and seve

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Author

Hui Huang; Yixue Jiao; Yan Tong; Yuhua Wang

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)