Identification of CDPKs involved in TaNOX7 mediated ROS production in wheat

Area of Science:

• Plant Molecular Biology
• Genomics
• Biochemistry

Background:

• Calcium-dependent protein kinases (CDPKs) are vital sensors of calcium signals in plants.
• Limited information exists on the CDPK gene family in Triticum aestivum (wheat).

Purpose of the Study:

• To identify and characterize CDPK genes in the wheat genome.
• To investigate the functional roles and interactions of TaCDPKs in plant development and stress responses.

Main Methods:

• Genome-wide identification of 79 TaCDPK genes.
• Phylogenetic analysis and expression profiling (tissue/organ-specific and stress-induced).
• Analysis of interaction networks between TaCDPKs and NADPH oxidases (NOXs).

Main Results:

• TaCDPKs were classified into four phylogenetic subgroups, with distinct tissue-specific and stress-inducible expression patterns.
• Complex cross-talk was observed between TaCDPKs and wheat NOXs.
• TaCDPK2/4 directly interacted with TaNOX7, enhancing ROS production.

Conclusions:

• TaCDPKs exhibit diverse expression profiles and play critical roles in wheat development and stress tolerance.
• Interactions between TaCDPKs and TaNOXs mediate ROS production, highlighting a key regulatory pathway.