English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Adaptation to drought stress is essential for plant growth and development. Plants often adapt to water deficit conditions by activating the ABA signaling. Here, we report that the pepper  CaDIK1  (  C apsicum  a nnuum   D rought  I nduced  K inase 1) gene is essential for plant tolerance to drought stress.  CaDIK1  contains a serine-threonine kinase domain, which plays a role for attachment of phosphate to the target protein. The expression levels of  CaDIK1  are upregulated in pepper leaves by ABA, drought, NaCl and H 2 O 2  treatments suggesting its role in abiotic stress response. We used  CaDIK1 -silenced pepper and  CaDIK1- overexpressing (OX) transgenic Arabidopsis plants to evaluate their responses to ABA and drought.  CaDIK1- silenced pepper plants conferred a reduced ABA sensitivity and drought hypersensitivity, which was accompanied by high levels of transpirational water loss.  CaDIK1- OX plants displayed opposite phenotypes to  CaDIK1 -silenced peppers. In contrast, substitution of Lys350 to Asn in the kinase domain of CaDIK1 did not lead to alteration of drought sensitivity. Collectively, these data indicate that  CaDIK1  is a positive regulator of the ABA-mediated drought-stress tolerance.

Pepper Novel Serine-Threonine Kinase CaDIK1 Regulates Drought Tolerance via Modulating ABA Sensitivity