Journal
JOURNAL OF EXPERIMENTAL BOTANY
Volume 74, Issue 10, Pages 2937-2939Publisher
OXFORD UNIV PRESS
DOI: 10.1093/jxb/erad146
Keywords
Etiolation; maize; photoreceptors; phytochrome-interacting factors (PIFs) skotomorphogenesis; transcription regulation; shade avoidance response (SAR); yield
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This article comments on the research done by Zhang et al. They identified ZmWRKY28 as a key regulatory element in the shade avoidance response (SAR) of maize, and explored its light-dependent pathway regulation. This discovery provides a potential new target for improving maize yield.
This article comments on: Zhang Z, Chen L, Yu J. 2023. Maize WRKY28 interacts with the DELLA protein D8 to affect skotomorphogenesis and participates in the regulation of shade avoidance and plant architecture. Journal of Experimental Botany74, 3122-3141. To feed the global population sufficiently from a small number of edible crops grown on limited arable lands, dense planting is required. However, high-density planting often induces the shade avoidance response (SAR), which is a limiting factor for yield. Plants undergo vegetative and reproductive changes to adapt to the varying amount and quality of incident light. These complex processes are delicately managed through signal transduction and regulatory systems comprising, but not limited to, receptors and transporters, hormones and specialized metabolites, and transcription factors (TFs). have identified such a key regulatory element of the maize (Zea mays) SAR, ZmWRKY28, and explored its light-depended pathway regulation. They introduced a potential new target for maize yield improvement.
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